[CentOS] Conntrack-tools for CentOS 4.8
Does anyone know where I can get an RPM of Conntrack-tools, libnetfilter_conntrack and libnfnetlink that work with CentOS 4.8? -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston Stephen Leacockhttp://www.brainyquote.com/quotes/authors/s/stephen_leacock.html - I detest life-insurance agents: they always argue that I shall some day die, which is not so. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] shell script
On Sun, Feb 8, 2009 at 9:52 AM, Chris Geldenhuis chris.gel...@iafrica.comwrote: Mad Unix wrote: I have to run multiple command about 20x on linux each one got his own output, I want to bind all the out puts of them in one file then read this file and mail it to user account sample [r...@imail pons]# /home/pons/tsmmonitor stgpool SDC-STAFF stgpool - utilization of storage pool SDC-STAFF 62%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ISO-BACKUP-POOL stgpool - utilization of storage pool ISO-BACKUP-POOL 41%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK I want all these out puts be bind it in one file myfile: stgpool - utilization of storage pool SDC-STAFF 62%, OK stgpool - utilization of storage pool ISO-BACKUP-POOL 41%, OK stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK then to read this file and send it to email address Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi, Do this by re-directing the output from your commands into a file like this: [r...@imail pons]# /home/pons/tsmmonitor stgpool SDC-STAFF outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ISO-BACKUP-POOL outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL outfile Note that the single in the first line will create a new outfile that is it will create the file if it does not exist or over-write it if it does exist. The double in the following commands will append the output of those commands to the already existing outfile. ChrisG Actually will also create the file if it doesn't exit. Try it :) -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston Joe E. Lewis - I distrust camels, and anyone else who can go a week without a drink. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] shell script
On Sun, Feb 8, 2009 at 10:02 AM, Chris Geldenhuis chris.gel...@iafrica.comwrote: Matt Shields wrote: On Sun, Feb 8, 2009 at 9:52 AM, Chris Geldenhuis chris.gel...@iafrica.com mailto:chris.gel...@iafrica.com wrote: Mad Unix wrote: I have to run multiple command about 20x on linux each one got his own output, I want to bind all the out puts of them in one file then read this file and mail it to user account sample [r...@imail pons]# /home/pons/tsmmonitor stgpool SDC-STAFF stgpool - utilization of storage pool SDC-STAFF 62%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ISO-BACKUP-POOL stgpool - utilization of storage pool ISO-BACKUP-POOL 41%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK I want all these out puts be bind it in one file myfile: stgpool - utilization of storage pool SDC-STAFF 62%, OK stgpool - utilization of storage pool ISO-BACKUP-POOL 41%, OK stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK stgpool - utilization of storage pool ORACLE-DUMP-POOL 62%, OK then to read this file and send it to email address Thanks ___ CentOS mailing list CentOS@centos.org mailto:CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi, Do this by re-directing the output from your commands into a file like this: [r...@imail pons]# /home/pons/tsmmonitor stgpool SDC-STAFF outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ISO-BACKUP-POOL outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL outfile [r...@imail pons]# /home/pons/tsmmonitor stgpool ORACLE-DUMP-POOL outfile Note that the single in the first line will create a new outfile that is it will create the file if it does not exist or over-write it if it does exist. The double in the following commands will append the output of those commands to the already existing outfile. ChrisG Actually will also create the file if it doesn't exit. Try it :) -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston Joe E. Lewis - I distrust camels, and anyone else who can go a week without a drink. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi Matt, I know that, but if you use and there is some file there with that name already the data will be appended to it instead of starting a new file with the output of your current session only. ChrisG For some that might be what they want. :) -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston Charles M. Schulz - I love mankind; it's people I can't stand. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] unsubscribe
On Wed, Jan 28, 2009 at 7:23 PM, Kevin Krieser k_krie...@sbcglobal.netwrote: On Jan 28, 2009, at 10:46 AM, Anne Wilson wrote: On Wednesday 28 January 2009 16:20:47 Kevin Krieser wrote: The information IS in the headers, but many email programs don't show the full headers, extracting only the information that many people want (subject, TO:, CC:, etc). So if you aren't aware of it being hidden in the headers, you may not notice it. I generally look at the footers, when present, to see how to unsubscribe. And many people don't even go that far. CentOS probably should add just a little more to their footers, such as a note that the link provided is also to unsubscribe. It's easy to find when you know, but then we're not newbies, are we? Anne I've been on several different lists, on and off, so I am not a newbie here. And even then, unless I remembered, I probably wouldn't think of looking at the normally hidden headers. Now when there is a footer added that says to unsubscribe, send a message to a specified address, it can be frustrating. But I guess it works, a list manager will probably remove the poster. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Who cares about the headers every single message from the list has a footer appended to it with the information about the list. Click on the link and it tells you how to unsubscribe. Not to mention that, but once a month I get an email from the mailing list telling me about my subscription and how to log in and make changes to my subscription. -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston Bill Cosby - A word to the wise ain't necessary - it's the stupid ones that need the advice. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Antivirus for CentOS? (yuck!)
On Thu, Jan 22, 2009 at 8:15 AM, Ralph Angenendt ra+cen...@br-online.dera%2bcen...@br-online.de wrote: Anne Wilson wrote: I'm sure there are plenty of people that can give Ralph detailed information about using it efficiently. Sorry, I do not want to know how to use clamav efficiently, I am just wondering what good clamav will do on a server, as there aren't really any hooks into file writing or reading. Sure, I can hook up clamav into my email stream or into my proxy on that machine for filtering out requests to people who use windows boxes behind those. But I do not understand which sense clamav makes on a linux server, if there are no hooks into the kernel (I know about dazuko, but a) we don't ship it and b) last time I looked at it I couldn't get it to run properly without a *huge* speed penalty). As far as I know there is no AntiVirus solution for Linux which works the same as all the solutions under Windows do. And if you do not have real time scanning on a server/workstation, an anti virus scanner doesn't do you any good, as the time frame for attacks is just too large. Either you get it on the first shot or you can just forget about it. So again: If you want to be PCI-DSS compliant - what's the use of clamav? Ralph Check out BitDefender http://www.bitdefender.com -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS failover cluster
On Fri, Jan 16, 2009 at 6:09 PM, Giuseppe Fuggiano giuseppe.fuggi...@gmail.com wrote: What should I use to configure a failover cluster under CentOS? Is there Red Hat Cluster Suite or something like that? Thank you in advance. -- Giuseppe Fuggiano ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos heartbeat works good. you can get it along with ldirectord/ipvsadmin at www.linuxvirtualserver.org -matt http://www.sysadminvalley.com http://www.beantownhost.com http://www.linkedin.com/in/mattboston ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] offtopic question .. apprecyice ur help
On Fri, Oct 31, 2008 at 10:09 AM, Ned Slider [EMAIL PROTECTED] wrote: Ralph Angenendt wrote: fabian dacunha wrote: its a offtopic question but really apprecite if someone would advise n help i have been running a mil server with sendmail and have sbl-xbl.spamhaus.org as my dnsbl. i had other servers which are alredy out now that is relays.ordb.org and dsbl.org have already been out of my sendmail config. any one knows of ny other servers i could add in my sendmail config Any list which you trust enough to make the decision *which* mails you accept for you. Which would leave none for me. Even sbl.spamhaus.org contains a blacklist, which sometimes lists because of the name the machine has (CBL that is). Ralph DNSBL has information on many RBLs together with statistics on their effectiveness: http://stats.dnsbl.com/ Other popular RBLs besides Spamhaus include Spamcop, PSBL and uceprotect. As Ralph says, any RBL should be used with a certain amount of caution as it has the potential to cause FPs (some more so than others). An alternative approach is to use such RBLs as part of a scoring system such as SpamAssassin. This is particularly useful for RBLs that you don't trust to outright reject mail at the smtp level. If you want to improve on the performance of sbl-xbl.spamhaus.org, I would first look at switching to the combined zen.spamhaus.org zone which also contains the pbl.spamhaus.org zone. My own data shows sbl-xbl.spamhaus.orgto block around 50% of spam whereas zen.spamhaus.org hits on around 90% of spam with very few FPs for me - YMMV. You should monitor performance closely. Anyone have any experience dealing with SURBL? I have a client who's domain and IP is not listed in SURBL, but their client in China is using SURBL and my client's emails are getting blocked. Can't seem to find how SURBL is blocking them -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: offtopic question .. apprecyice ur help
On Fri, Oct 31, 2008 at 12:37 PM, Scott Silva [EMAIL PROTECTED] wrote: snip Anyone have any experience dealing with SURBL? I have a client who's domain and IP is not listed in SURBL, but their client in China is using SURBL and my client's emails are getting blocked. Can't seem to find how SURBL is blocking them Could the client in China either have an old copy of the feed, or maybe a Chinese ISP keeps an older copy cached of the feed? The Chinese client could also whitelist your client. I've moved their website to 3 totally different ISPs. LayeredTech, Superbhost, and now Savvis colo. Not sure on the whitelist, we've having a hard time getting anyone in the China office that knows how this is setup. I guess the previous tech that set it up left. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql 4 5 export import issue
On Thu, Oct 30, 2008 at 9:52 AM, Karanbir Singh [EMAIL PROTECTED]wrote: Tom Brown wrote: in other news, you dont need to dump + reload when you move from mysql-4 to mysql-5, just service mysqld stop; yum update mysql\*; /usr/bin/mysql_upgrade ; service mysqld start i am changing the actual box so i have to dump and then import as i am also moving from centos4 to 5 - rsync or tar the /var/lib/mysql dir up and move that. I am guessing in this case that some delimiter is breaking or the dump you did wasent clean. But make sure mysqld is not running on either box when doing it this way. Also, if you have any innodb tables you must have the exact same innodb settings in your /etc/my.cnf -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Mounting a LVM partition from a linux live cd
I'm running CentOS 5.2, it uses LVM to manage the disks and we had a programmer do something (not sure what) then reboot the system. When it came up it kernel panicked. Luckily it's not production, it was their sandbox. But they didn't backup any of their files. I know the disks are fine because I was able to boot from a linux live cd and mount the /boot partition from the sda drive, and the sdb drive that has the mysql database mounted at /var/lib/mysql and not using LVM. What I don't know how to do is mount /dev/sda2 (root / partition) which is an LVM/ext3 partition. Does anyone have the steps to mount this drive while booted into a linux live cd? -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] unsubscribe
On Thu, Jul 31, 2008 at 7:05 PM, Jim Shunamon [EMAIL PROTECTED] wrote: Rajeev R. Veedu wrote: *Rajeev R. Veedu* ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos If you want to unsubscribe, follow the link at the bottom of any mailing list email http://lists.centos.org/mailman/listinfo/centos or the instructions in the email you got when you signed up. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] enterprise backup solution (probably amanda?)
On Fri, Aug 1, 2008 at 12:19 PM, David Mackintosh [EMAIL PROTECTED] wrote: On Wed, Jul 30, 2008 at 07:10:40AM -0700, Shawn Everett wrote: I think backups are important and always on topic. You could always use Veritas Netbackup. That's what one of my clients uses with great success. It backups up Windows, Linux and does full, incremental, restores etc etc all from a nice Java GUI. It's $$$ but you can't get more Enterprise than that. ;) Agreed on Veritas NetBackup. An oddly constructed tool, but one we've come to depend on. We also have customers who use Bakbone NetVault. It's broken in different ways than the Veritas NetBackup is. :) -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com Check out bacula.org. It's very good and scalable. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 2 DHCP servers - different VLAN's
On Fri, Jul 25, 2008 at 4:46 PM, David Hláčik [EMAIL PROTECTED] wrote: Hello guys, to describe my scenario i have 4 VLANS on my switch, each VLAN is different subject. I have one DHCP server for 3 VLANS + second one DHCP server for 1 VLAN - named VLAN 7 . Problem is , this started to make problems suddenly. VLAN 7 is not recieving IP adress from correct DHCP server . On DHCP server where declaration for subnet is configured, i am recieving this message : Jul 25 12:38:47 boss dhcpd: DHCPNAK on 10.123.42.169 to 00:16:cf:93:1f:33 via eth0 Jul 25 12:38:52 boss dhcpd: DHCPREQUEST for 10.123.42.169 from 00:16:cf:93:1f:33 via eth0: wrong network. How can i solve it and what does it mean? I am using authoritative clausule in each subnet deffinition. Thanks in advance! David ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos If VLAN 7 has access to the VLAN that the primary dhcp server is on, you need to somehow block dhcp requests. What I did was besides using VLAN's on my switches, I have a Sonicwall firewall which handles the actual routing between vlans, then I set certain vlans to use the first dhcp server via a dhcp helper in the firewall. Then in the other vlan I point the dhcp helper at the second dhcp server. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] African IP addresses list
On Tue, Jul 1, 2008 at 7:44 AM, Tony Wicks [EMAIL PROTECTED] wrote: I would like to add something, as a South African citizen. South Africa, is NOT part of Africa for that matter, it's a republic on it's own. It's almost like saying Let's ban America, cause someone in Mexico spammed me. South Africa, which is on the 196/8 range does a LOT of business overseas in many countries, and I do want to warn that you could loose a lot of good business due to this practice. Most of the fraud you experience could come from Nigeria, or one of the other central western Africa countries. To ban a whole continent because of problems some countries cause could be problematic. For that matter is China a different country from Russia, from Switzerland, even though they share the same land mass -- I need to put my 2c in here. I'm from New Zealand, we are a first world democratic country (the first in the worlds to give the vote to ALL adults I may mention). I have had the misfortune many of times of being unable to transact business because people from the US in their ignorance think, that New Zealand, isn't that part of Australia, which is right next to Asia, can't do business with those Asians, they will rip me off. Now sometimes people from the US have asked me why people in the other parts of the world get a bit annoyed at the the only country that is free and true if the good old US of A attitude, and well here you go as an example. Lets ban all of Africa because someone from Nigeria is a scammer. Africa is a pretty big place, and you know what, I've met many South Africans that are real nice (even employed a few). I've always been someone who defends America when people run it down, but it is a two way street, don't treat a whole country as criminals because you don't know the difference between one side of a continent from another, its kind of insulting you know. And some day you might well need the rest of us, you never know. If a business only wants to do transaction with people in their own country, what is wrong with that? There is no international law that says they have to provide services or products to you because you live in a different country. Sometimes the lost revenue by not doing business outside your own country is better than having to deal with the possibility of fraud. Sometimes it is more of a hassle to deal with shipping, service and/or support issues with people from a different country and it's just not worth it. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] African IP addresses list
On Tue, Jul 1, 2008 at 3:03 PM, Sean Carolan [EMAIL PROTECTED] wrote: This is a bit naive and childish: how terribly shocking...I suggest also blocking China, 'cause they're commies, and France because they eat frogs The OP is not discriminating against Africa because of government systems, skin color, or diet. He is trying to reduce lost revenue, credit card refunds and time due to fraudulent orders that almost all originate from the African continent. The reality is that Nigeria is the 419 internet scam capital of the world, and the Nigerian scammers sometimes work from other African nations or even the UK. If someone in Africa really, really must have something that Matt sells then they should pay with Western Union or international money order instead of a credit card. Ever heard of the Western Union scam? No offense to anyone in any other country, but personally I prefer to deal with people in the US who are covered by US laws. My comments above had absolutely nothing to do with race, color, nationality, religion, etc. It's because it's easier to go after someone legally if they try to rip me off and they are in the same country as me. And I know there a lot of businesses that have taken the same stance on who they will sell products to. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Command line logging program suggestions?
On Fri, Jun 20, 2008 at 8:57 AM, Rob Lines [EMAIL PROTECTED] wrote: I am looking for an app that would run from the terminal and would emulate a bash shell (or pass everything to the shell) that would allow me to set a log file and then record all my input and the output to the screen from the commands. As an added bonus if it would allow me to run it from two terminals (or more) on the same machine and log all the input and output to the same file while still displaying it on the screen that would be great. The goal being that when making changes or diagnosing a problem it can sometimes become hard to tell what command came when especially when you have more than one termial session open. While using putty with a really large buffer helps it doesn't deal well with the two terminal issue or disconnected sessions. Anyone know of an app like this or any suggestions that could be added to my bashrc to provide the functionality? Thanks, Rob I recently need something similar, but wanted everything sent to a remote syslog server. A friend of my suggested install rootsh or sudosu as the shell and wrap it in a script that pipes everything to syslog using a script like this http://www.oreillynet.com/pub/a/sysadmin/2006/10/12/httpd-syslog.html I haven't had time to set it up, but it seems like it could work. If you didn't want remote syslog, just pipe it to a local file. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hardening CentOS by removing hacker tools
On Fri, Jun 6, 2008 at 7:54 PM, Luke S Crawford [EMAIL PROTECTED] wrote: Filipe Brandenburger [EMAIL PROTECTED] writes: My boss asked me to harden a CentOS box by removing hacker tools, such as nmap, tcpdump, nc (netcat), telnet, etc. Removing network tools does not make it harder to break into the box, however, it can make it harder to do something with it once you are in. removing those tools might help keep an infection from spreading, but it wont protect the box itself. (also, just installing the programs just means that if your box get compromised, the hacker needs to install some new packages. Not difficult, even without root- the attacker can install to the compromised user homedir.) But removing networking would :) -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Learning some sad things about the state of IPv6
On Fri, May 30, 2008 at 6:23 AM, Karanbir Singh [EMAIL PROTECTED] wrote: Christopher Chan wrote: The OP is not saying there is no ipv6 netfilter support. He said that there is no ipv6 state netfilter module or something like that. In which case either you dont know what the OP is talking about, or he doesnt know what he asked :D -- [EMAIL PROTECTED] ~]# ip6tables -nL | wc -l 124 [EMAIL PROTECTED] ~]# hostname panic.karan.org [EMAIL PROTECTED] ~]# lsof -i | grep IPv6 | wc -l 561 [EMAIL PROTECTED] ~]# ip a l | grep net6 inet6 ::1/128 scope host inet6 fe80::20d:61ff:fe80:7ce3/64 scope link inet6 2001:4830:1600:13c::2/64 scope global inet6 fe80::4224:e704/128 scope link [EMAIL PROTECTED] ~]# uname -r 2.6.18-53.1.14.el5 --- - KNatively running ipv6 for a few years nowB -- Karanbir Singh : http://www.karan.org/ : [EMAIL PROTECTED] Exactly!!! What he's complaining about is the lack of lazy-man's GUI tool to configure ip6tables. Are you absolutely sure that FWBuilder doesn't support IPv6? Because here there a release note http://www.fwbuilder.org/docs/firewall_builder_release_notes.html referring to ip6tables. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Learning some sad things about the state of IPv6
On Thu, May 29, 2008 at 11:43 PM, Christopher Chan [EMAIL PROTECTED] wrote: Robert Moskowitz wrote: We have kernel support for IPv6 in Centos, but not stateful firewall support. That requires at least the 2.6.20 kernel, which means Fedora Core 6 or some other Linux distro. None of the various free Linux firewalls have IPv6 support. Supposedly FWBuilder can manage Netfilters for a Linux Kernel, but that seems to be the extent of it. More sad facts as I uncover them. Just use openbsd. We cannot expect Linux to rule everything. Use what best fits the job. Not sure about FC6, but in both CentOS 4 5 there is an ip6tables. I haven't used it, but I'm assuming that you can build rules just like you do with iptables. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] sed
On Fri, May 23, 2008 at 11:41 AM, Scott McClanahan
[EMAIL PROTECTED] wrote:
Not specific to CentOS but I know you guys would be really helpful anyhow.
Basically, I have a file which has been editted in the past very similarly
to the hosts file only now I want to use it as a hosts file and need to run
some fancy sed to massage the data into shape. Currently, the data in the
file is in the form of ip address tab short hostname space short
hostname alias. In some cases there may not be any aliases so the end of
line would be right after the short hostname (no space at the end either).
In other cases there could be many space separated short hostname aliases.
What I have been trying to do without success is add our domain name to the
first string after the ip address and tab character. As an example,
== Before ==
1.1.1.1foo
10.10.10.10bar bar2
100.100.100.100foobar foobar2 foobar3
== After ==
1.1.1.1foo.contoso.com
10.10.10.10bar.contoso.com bar2
100.100.100.100foobar.contoso.com foobar2 foobar3
Any advice on how to pull this off? Thanks.
I'd use awk. Put the lines in a file, then do this
cat test.txt | awk '{ print $1 \t $2 .centos.com\t $3 \t $4 }'
--
-matt
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Re: [CentOS] OT: Top Posting
On Fri, May 16, 2008 at 8:14 PM, Karanbir Singh [EMAIL PROTECTED] wrote: Hi, Carol Anne Ogdin wrote: Dear Mr. Singh: I understand you prefer this medium. I have practical experience with alternatives that have offered measurable and definite benefits to the communities they serve. Which is quite fair, and the point I was making as well. However, the poit I was also making ( and have now repeated about 4 times ) is- this is the lists not the forums. We have some guidelines and the moderaters will make an effort to implement them. Your opinions are louder than your putative experience. Unfortunately, in 51 years in the computer industry, I've sometimes had to cope with behaviors like yours. It still makes me sad to experience such unhappy people who think that attack is the best way to enrich a collaboration. ok, so you are 51 years old. Which was good to know. I'll respect you for your age. Apart from that you've made no real contribution to the conversation here. I think the thing that's annoying about top posting is explained with this example (grabbed from a Boston Linux Unix Group signature). I'll have to admit when I'm not thinking about it, there have been a few times where I've top posted (bad habit from the corporate world), but if people would take 5 minutes to read a complete thread backwards with comments inserted in between other comments, it gets very confusing. Bottom posting or posting in between comments makes sense. A: Yes. Q: Are you sure? A: Because it reverses the logical flow of conversation. Q: Why is top posting annoying in email? -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] I need storage server advice
On Tue, May 6, 2008 at 3:11 PM, Ed Morrison [EMAIL PROTECTED] wrote: Hi: I need advice on implementing a storage server. I really do not have the $ to spend for a Dell iSCSI storage divice and I am thinking trunning CentOS 5.x with ftp or FreeNAS. Here is what I am looking at and concerned about. Situation: My current storage needs are approximately 1.5 TB annually. This will increase to about 3.5 TB annually over the next 5 years (rough est.). This box will just be a data archive and once it is full it will only be used very infrequently if not used at all. Files are small up to 10 MB but numerous. CentOS: Upgrading to the newer CentOS flavors. I will not have the ability to archive this data to tape and I am concerned about loosing the data when upgrading the OS. How best to handle this? Storage limitation. It is my understanding that there is a 2 TB storage limitation with Linux (and windows) in general particularly for stability. I see that ReiserFS can go up to 16 TB. Is any one using this? If so, how has it been for you? FreeNAS Anyone using FreeNAS? What is your experience? How easy is it to add new drives and keep your data? Upgrading to newer versions? Thanks, Ed I haven't used this and maybe I understand the concept, but what about RedHat's GFS? From what has been told to me, you take a cluster of servers and it turns them into a large disk array. Someone correct me if I'm wrong. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Watching Netflix movies on CentOS
On Sun, May 4, 2008 at 6:31 AM, Kai Schaetzl [EMAIL PROTECTED] wrote: Ralph Angenendt wrote on Sun, 4 May 2008 10:22:11 +0200: In other words: They don't want your money. If I were you, I'd respect that. Make yourself heard over at Netflix, though. I remember about the Netflix format from before 2000. It's a very low bandwidth format with really bad quality. AFAIK it was mainly porn sites using it. I thought it had died out since long. Kai Netflix only started doing on demand movies about a year ago, and from what I remember when I had the service it wasn't all that bad. It looked great on a laptop, and on my 720p 37 HDTV it looked better than normal tv, but not as good as an HD program. I agree with Ralph, complain to them, I know I did. Unfortunately they probably don't think there are enough Linux users to justify providing service to us. I'm just really surprised they haven't provided service to Mac users, the new Quicktime format actually has better compression rates than any of the WMV/WMA formats. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Watching Netflix movies on CentOS
On Sun, May 4, 2008 at 11:02 AM, Kevin Krieser [EMAIL PROTECTED] wrote: On May 4, 2008, at 9:23 AM, Matt Shields wrote: On Sun, May 4, 2008 at 6:31 AM, Kai Schaetzl [EMAIL PROTECTED] wrote: Ralph Angenendt wrote on Sun, 4 May 2008 10:22:11 +0200: In other words: They don't want your money. If I were you, I'd respect that. Make yourself heard over at Netflix, though. I remember about the Netflix format from before 2000. It's a very low bandwidth format with really bad quality. AFAIK it was mainly porn sites using it. I thought it had died out since long. Kai Netflix only started doing on demand movies about a year ago, and from what I remember when I had the service it wasn't all that bad. It looked great on a laptop, and on my 720p 37 HDTV it looked better than normal tv, but not as good as an HD program. I agree with Ralph, complain to them, I know I did. Unfortunately they probably don't think there are enough Linux users to justify providing service to us. I'm just really surprised they haven't provided service to Mac users, the new Quicktime format actually has better compression rates than any of the WMV/WMA formats. Apparently the problem with the Mac is the DRM again. The studios are apparently all worried that people will keep copies of the old TV shows and movies downloaded. I have an old Mac Mini that I would like to use to watch some Netflix shows on (better than sitting in front of a computer, or watching it on a small laptop), but until it is supported I can't. The Mini is hooked up to my TV directly. Quicktime absolutely supports DRM, so what's the problem? It's a cheap company that's looking to get the most bang for the littlest buck. It wouldn't have taken much to have their system ask for the users choice of player (WMP or QT), so the other remaining issue is time to convert films to digital format and storage. Since the conversion is probably automated it shouldn't have taken that much extra time. So the only issue is disk space, which means that Netflix was too cheap to spend the extra money to store a QT version of the films so they could get the Mac users. From what I remember of the Netflix downloads they were looking for a cheap way to get ahead of Blockbuster. They looked good, but they did as little as possible, which included a limited availability of movies. And for those that say it's more complicated than I state, I have built a site from ground up(programming and video encoding) which hosted independent films in WMV and QT formats. For me the most complicated part was converting films that were not on optical media (like DVD), because if they were sent on tape format (DVCPRO, DV, BetaCam, etc) you were limited to the speed of playback, whereas digital you can rip faster. When it came to storage, even at high def quality storage was still cheap. Even bandwidth for streaming was quite cheap. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] vectoring IRC / Jabber logins to AD?
On Tue, Apr 22, 2008 at 11:56 AM, Craig White [EMAIL PROTECTED] wrote: On Mon, 2008-04-21 at 21:34 -0500, Les Mikesell wrote: Matt Hyclak wrote: On Mon, Apr 21, 2008 at 06:39:45PM -0700, Rogelio enlightened us: Excuse my ignorance (I just got crap on the #centos IRC channel for this question), but is there a (easy!) way to have and IRC and/or Jabber server relay a login to a Microsoft Active Directory server for authentication? If there's a better question to ask this question, please point me in that direction, and I'll be happy to do so Well, you probably want to ask in a support channel for your IRC and jabber server software, and/or some sort of Microsoft channel. The way you've posed the question, it has nothing to do with CentOS, so I am unsurprised you got crap for it on IRC. I thought one of the big deals in Centos was the ability to configure PAM to authenticate anywhere you want and all the apps use the same settings? Isn't that true, or aren't there any jabber/IRC servers that are bundled properly into the distribution? This sounds very much like a distro-centric question to me, even if the answer turns out to be that Centos doesn't provide that. actually no. I am currently using ejabberd and it is not common to authenticate 'real' users but certain possible. The methodology of authenticating 'real' users would entirely depend upon the jabber server software which varies widely from perl to java to erlang. The point of authenticating against LDAP is rarely do you only want user/id authentication but you also want address books/user lists and other attributes that can be useful such as e-mail address. In addition, jabber servers do have to store attributes about users so there's little to be served by marrying PAM functions in. What you should have noticed here Les, is that Windows AD users are mostly clueless to how LDAP works and integrating Windows AD/LDAP into other software is a challenge for them. Craig Why not just install OpenFire which has the AD - Jabber authentication stuff built right in? -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT -Recommendations relating to a Password Safe
On Tue, Apr 22, 2008 at 10:23 PM, Clint Dilks [EMAIL PROTECTED] wrote: Hi Everyone I am wondering if many people are using software that acts as a password safe. And if so can you recommend any software in particular? I know many people will disagree with this idea, and I myself have always followed the printed list stored in a secure location. But in our particular situation keeping this single list current and correct while ensuring that regular password changes happen is turning into a nightmare. Any suggestions welcome, have a nice day :) Check out PasswordSafe and KeePass. They are both very good. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] jabber server
On Sat, Apr 19, 2008 at 4:11 AM, Olaf Mueller [EMAIL PROTECTED] wrote: Rogelio wrote: Hello, I'm looking to set up a Jabber server and autocreate the user lists from Active Directory. I am using Openfire from http://www.igniterealtime.org/projects/openfire/index.jsp under CentOS 5 for instant messaging in my local network. It works great. Also Openfire seems to work with active directory, but I have no experience with that. regards Olaf I second that. Openfire was extremely easy to setup with AD. Also, we were able to download the Spark Jabber Client and customize very easily with our company logo. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] FreeRadius + Dynamic VLANs/802.1x Authentication
Has anyone setup FreeRadius to do automatic VLAN assignments on their switches based on client mac addresses? If so, would you be willing to share your radius configs? I haven't touched radius since mid 90's and am stuck trying to get this to work. It would be much appreciated. thanks -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] MS Exchange Replacement
On Mon, Apr 7, 2008 at 1:19 AM, Rudi Ahlers [EMAIL PROTECTED] wrote: Joseph L. Casale wrote: What is the closest open source mail server I can replace exchange with that provides the nearest equivalent in user experience? Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos What about Zimbra or Scallix? -- A friend of mine is running Scalix for one of the town's where I live. It's used for all town government employees, plus all high school staff, teachers and students. I think he said there are about 5000 mailboxes and it runs smoothly. I don't know if he has it setup as a cluster or with a SAN or what. But I know he likes it. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] simple load balancing/failover for OWA
On Fri, Apr 4, 2008 at 9:03 AM, Ruslan Sivak [EMAIL PROTECTED] wrote: David Hrbác wrote: Ruslan Sivak napsal(a): We are building an exchange cluster with two front end Outlook Web Access servers. We would like to at least have some sort of failover, and prefereably load balancing for them. Russ Russ, take a look at http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html David ___ Yes, that what I was thinking. However, I believe these servers also run smtp, pop3, imap,etc, so I don't think Apache can handle all of those.. LVS handles all protocols. It can do any port and UDP or TCP. It supports different types of balancing Round Robin (rr), Weighted Round Robin (wrr), Least Connections (lc), Weighted Least Connections (wlc). It can do sticky sessions, so if OWA doesn't like when you go from server 1 to server 2, LVS will keep the user stuck to one server. Plus a ton of other features. Give it a shot. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] simple load balancing/failover for OWA
On Thu, Apr 3, 2008 at 11:07 PM, Ruslan Sivak [EMAIL PROTECTED] wrote: We are building an exchange cluster with two front end Outlook Web Access servers. We would like to at least have some sort of failover, and prefereably load balancing for them. The MS recommended way is to use NLB, but for various reasons that's not working with our set up. We are looking to set up a single linux server and use something like LVS to load balance/fail over the connections. Looking at LVS, it looks like it hasn't been updated in a while. Is it stable? Is it still the preferred solution? Since OWA has sessions, but no session replication, we would need something that can keep directing the same client to the same server (either by IP, or preferably by cookie). Can LVS handle this? I also saw that the latest version of Apache has some sort of load balancing support. Can it be used to set something like this up? We are looking for the simplest solution that won't require a lot of maintanence. We understand that having a single LVS box creates a single point of failure, and are willing to accept the risk for now to keep things simpler. Russ LVS is extremely stable. We have 3 active/passive clusters of LVS servers, for different projects, and they work extremely well. The way we set it up was each LVS pair is running heartbeat, ldirectord and ipvsadm. If the primary node goes offline for any reason, heartbeat on the second tells it to take over. And there are lots of config settings to tweak heartbeat. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Create Install DVD with updates
On Wed, Apr 2, 2008 at 2:08 PM, Joseph L. Casale [EMAIL PROTECTED] wrote: We put out a new dvd every 3-6 months ... do you really need one more often than that? Heh, I don't need one more often, but it makes bandwidth easier to manage when doing test's and mock installs for example aside from the obvious time needed to run the update's. I created a local mirror which at least cuts dl time and bandwidth down! Is it possible though? jlc Some people might. I remember dealing with a client in the middle of India which had a really slow net connection. So being able to download updates and roll-their-own-dvd-with-updates could be useful to some. Personally, I've setup a local centos mirror which downloads updates once a day, and I use PXEBoot to image all my servers and have a bunch of custom kickstart files that do a lot of post installation configuration. I do this for convenience because I don't want to go out to a datacenter to reimage a server, instead I just log into a kvm. But it's practical for your local office as well. So if had a slow connection this is the way that I'd go. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql data
On Mon, Mar 31, 2008 at 5:17 PM, Ray Leventhal [EMAIL PROTECTED] wrote: HI folks, Apologies if this is OT. If it is, please msg me offllist and I'll carry on my searching elsewhere. Where does mysql actually store databases and tables in the filesystem? Thanks in advance -Ray If you're using the stock settings from an RPM, probably in /var/lib/mysql -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Securing SSH
On Tue, Mar 25, 2008 at 12:48 PM, Tim Alberts [EMAIL PROTECTED] wrote: So I setup ssh on a server so I could do some work from home and I think the second I opened it every sorry monkey from around the world has been trying every account name imaginable to get into the system. What's a good way to deal with this? DenyHosts - http://denyhosts.sourceforge.net/ Also, when you set it up, set it to download the lists from their website. These lists are IPs that other users have found scanning their network. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL on The Pirate Bay, Mininova, etc
On Sat, Mar 22, 2008 at 7:09 PM, Stephen John Smoogen [EMAIL PROTECTED] wrote: The usual idea is that because its Free Software you can't restrict it in anyway... and that the 'Freedom' trumps any other license or agreement. And I will bet that if you have enough money, there will be lawyers who will come up with ways to argue that is a valid interpretation.. and will argue it over and over again as long as you have money. I find it funny how people love to complain because companies like RedHat and SuSE/Novell have found a way to make a business out of a free product. There is nothing forcing you to use their distro. And if you do like their distro that much and don't want to pay, there are free alternatives to the commercial products like CentOS, WBEL and OpenSuSE. Heck there are more free distro's than paid ones. Or if you are jealous of those companies making all the money off a free product and are so inclined why don't you create your own commercial Linux distro. There is nothing that they are doing that violates the GPL, if they did, I'm sure that they would have all kinds of legal trouble. Instead of complaining, people should be grateful for the hard work that they do bringing features, fixes, drivers, which are released for free, and by getting hardware vendors involved in bring linux compatibility to their products. I can still remember back in 1995 trying to get support from a hardware vendor who refused to provide drivers for linux or even offer any assistance. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 0pensource MAPI client for Exchange
On Thu, Mar 20, 2008 at 9:58 AM, Joseph L. Casale [EMAIL PROTECTED] wrote: Anyone know a good Linux client for Exchange that is MAPI based and not IMAP based? Using Evolution, but going from Outlook/MAPI to this is not fun☺ Thanks! jlc I've been using Evolution with our Exchange servers and instead of using MAPI, I enabled Outlook OWA (http) and connect that way. You just point Evolution to the URL of your server, usually http://servername/exchange -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Colors in vi for user root
On Fri, Mar 7, 2008 at 6:42 AM, Mário Gamito [EMAIL PROTECTED] wrote: Hi, How can I have vi with syntax hilghting for root ? Regular users have it, but not root's. I've seen the hidden files of a regular user home, but found nothing. yum install vim-common vim-enhanced -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] install LAMP
On Mon, Mar 3, 2008 at 8:52 AM, Hiep Nguyen [EMAIL PROTECTED] wrote: hi all, i'm not an expert on linux/centos, but i play with it and have a general idea. it's time for me to setup a centos box for development. i rarely install anything from source, except a few times in college when i have to modify kernel for OS project. but i guess i can learn now. i just installed centos 5 with minimal installation. next step is to install LAMP w/ SSL. i found http://lamphowto.com/lampssl.html, but i have questions before i proceed. is it better to install from source or rpm? how easy it is to upgrade/update if install from source? it seems so much easy to upgrade/update from rpm, well b/c i'm always do this way. is there any other instruction (beside the one mentioned above) to install LAMP w/ SSL? appreciate your help/suggestion t. hiep It's better to stick to the RPMs to make it easier to upgrade. If you want an easy way to install LAMP you can run 2 commands yum -y groupinstall Web Server yum -y install mysql-server php-mysql This will get Apache, MySQL, and PHP all installed. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Send in your favorite CentOS slogan today
On Mon, Mar 3, 2008 at 11:36 AM, Dan Carl [EMAIL PROTECTED] wrote: Heard someone mention free beer, had to participate. CentOS, we find RedHat's bugs CentOS, the OS that makes sense. Dan I know that everyone seems to think any mention of RH is cute and funny, but it's just asking for a lawsuit. Does anyone remember LinuxWorld Expo in Boston a couple years ago when RH was releasing RHEL4. No? I do, because that's when CentOS got a letter from RH legal department asking to remove all references to their name and I was the one sitting in the LinuxWorld booth trying to justify to people that CentOS was a valid project and not just stealing someone else's IP. If CentOS wants to be taken seriously, especially by big business, you don't do it by biting the hand that feeds you and creating bad publicity. Referring to RH without their permission is just begging for RH to sue us. Drop the RH jokes and push CentOS on it's merit as a stable enterprise OS with a great community behind it. Also without RH, CentOS wouldn't be. They make it very easy to obtain the sources in a manner that makes it easy to build CentOS by releasing complete SRPMs. There's nothing saying RH has to release the code this way. They could make it very difficult for groups like CentOS, WhiteBox, and Scientific Linux. Be nice to RH and buy a license here and there when it makes sense. They have their place in the food chain, as do we. Just my $0.02 -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen or VMWARE on CentOS 5
On Wed, Feb 27, 2008 at 2:58 PM, Rudi Ahlers [EMAIL PROTECTED] wrote: David Mackintosh wrote: On Wed, Feb 27, 2008 at 08:03:09AM -0600, Les Mikesell wrote: Ern jura wrote: Does anyone out there have a comprehensive tutorial on installing VMware and successfully managing virtual machines with either xen or vmware? VMware is pretty simple: download the server rpm, install it, run the vmware-config.pl setup script to set the options and install your (free) license key. Then run vmware locally or from some other machine to access the console where you can create and start the virtual machines. Once created, you can treat the virtual machines like they were separate physical boxes except that they contend for host resources (and once they are up on the network I prefer to connect directly to them with ssh, X, freenx, or vnc instead of using the VMware console. You'll want plenty of RAM on the host machine and if you run several VM's they will perform better if you can spread them over different disk drives. With VMware you can copy your disk images over to a Windows or Mac host and run them with no changes (Mac version isn't free, though). This is pretty much what I do. I also keep stock reference images for each OS I support and copy from the reference image every time I need to deploy a new VM. I like the idea of Xen, but the documentation is a little thin especially when it comes to installing useful things like Windows VMs; I don't have the time to solve the problem properly, and I hope that in a year or two I can change this. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos So, what would you use if you wanted to / needed to host a Windows 2003 VM on a Linux / UNIX server? I don't / can't sacrifice a whole server for a few ASP.NET aps. I've never tried this, but someone was telling me that it might be possible to serve up ASP and ASP.net with Apache and mono. I don't know if this is true, but might be worth checking out. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Find files
On Fri, Feb 22, 2008 at 9:16 PM, Robert [EMAIL PROTECTED] wrote:
[EMAIL PROTECTED] wrote:
Hi,
I am trying to delete files that are more than 7 days old. When I
run it interactively it works, no problem, but it does not run
from a file stored in cron.daily. The rest of that daily file
runs properly. [The execute bit is on].
I don't see anything in the /var/log/messages.
---
#!/bin/bash
find /mnt/iog -type f -name '*.tar.gz' -mtime +7 | xarg rm
---
Any idea what am I missing?
Just a shot in the dark: Cron is kinda partial to absolute paths.
Change your 1-liner to:
/usr/bin/find /mnt/iog -type f -name '*.tar.gz' -mtime +7 | xargs rm
That, and the xargs that Garrick pointed out.
Good luck.
___
CentOS mailing list
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http://lists.centos.org/mailman/listinfo/centos
You can also do it like this
/usr/bin/find /mnt/iog -type f -name '*.tar.gz' -mtime +7 -print -exec
rm -f {} \;
If you want to log the results that were deleted try this
/usr/bin/find /mnt/iog -type f -name '*.tar.gz' -mtime +7 -print -exec
rm -f {} \; mylog 2 /dev/null
--
-matt
___
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Re: [CentOS] Timing a command
On Jan 25, 2008 7:05 PM, Scott Ehrlich [EMAIL PROTECTED] wrote: I want to keep track of how long a task is running. Thinking it wouldn't take that long, I opted not to run time before it. The fact that it is taking a long time, if I revisit the machine in the morning, what would be the best way to find out what time it ended? In this case, I'm using mt to erase an lto3 tape - sudo mt -f /dev/st0 erase. But I'd like to use the knowledge from this question to track other events, too. I feel like I should know this answer, but cannot think of the solution at the moment. Thanks. Scott just add 'time' before your command. like this: time sudo mt -f /dev/st0 erase -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Internet usage monitoring
On Jan 22, 2008 11:26 PM, John R Pierce [EMAIL PROTECTED] wrote: jarmo wrote: How about webalizer? http://www.mrunix.net/webalizer/ thats for analyzing a webserver's logs. poster dnk wanted to monitor his internet usage, which I assume is router traffic. Yes, but you can also use it to analyzer squid logs. So if you're using Squid proxy, then you can charge on your internet usage. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] What's up with the mailing list spam?
Just this morning I've gotten 3 or 4 pieces of spam on the CentOS mailing list. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Firewall frustration
On Dec 31, 2007 7:58 AM, Robert Moskowitz [EMAIL PROTECTED] wrote: Matt Shields wrote: On Dec 31, 2007 12:13 AM, Robert Moskowitz [EMAIL PROTECTED] wrote: Well FWbuilder is NOT easy. The documentation does not match the current GUI. Now the box is locked up. I will have to pull it again, hook it up to a kybd/VGA and reset iptables Maybe Shoreline with webmin Problem is I want a REAL router/firewall with little work. Both public and private nets have routable addresses. No NATing for me! I just help write the RFC ;) And all the templates for fwbuilder want you to be using NATing. Perhaps I should just set up another Astaro firewall. I have been using Astaro since v3, so I am comfortable with it If you've ever used a Checkpoint firewall, FWBuilder is exactly like that interface. It even comes with a module that will let you modify Checkpoint firewalls. I noticed the later, also a PIX module. No I have not personally needed that costly of a firewall. Full discloser time. My day job is with ICSAlabs. My area is security protocols research (like setttin up the initial IPsec certification criteria), but when I visit the labs there are all those firewall products up and running So, yeah, I know checkpoint. I talk with the gang over in the labs about 'simple' firewalls, but there are only certain things the boss funds here. So then I have to go cheap. If you're running a single firewall, then maybe FWBuilder isn't for you, although it will do what you want. The real benefit of FWBuilder is when you have more than one firewall in your network and you want to use common objects to to simplify maintaining rules. For example, the company I work for has 4 datacenters, plus a number of leased servers (like Rackspace). At each of the datacenters we have at least 1 pair of redundant firewalls. On all our firewalls we have common rules to allow traffic from every other datacenter/server that we own. So we define an object for each datacenter, the object is a subnet. Then we define a group called datacenters which includes all the previous subnets objects. Then when building a new firewall we just include the same rule that says from datacenters allow all. If we add a new datacenter or leased server, we add a new subnet object and include it in the datacenter group. We then just recompile and redeploy each of the firewalls without having to add anything to the firewalls, because they already have the datacenter rule. When you maintain a large network you really see the benefit of FWBuilder. If you're running Windows there is a $50 license fee, but for those people who are network admins but do not like Linux on the desktop it's well worth the price for the Windows license. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Firewall frustration
On Dec 31, 2007 12:13 AM, Robert Moskowitz [EMAIL PROTECTED] wrote: Well FWbuilder is NOT easy. The documentation does not match the current GUI. Now the box is locked up. I will have to pull it again, hook it up to a kybd/VGA and reset iptables Maybe Shoreline with webmin Problem is I want a REAL router/firewall with little work. Both public and private nets have routable addresses. No NATing for me! I just help write the RFC ;) And all the templates for fwbuilder want you to be using NATing. Perhaps I should just set up another Astaro firewall. I have been using Astaro since v3, so I am comfortable with it If you've ever used a Checkpoint firewall, FWBuilder is exactly like that interface. It even comes with a module that will let you modify Checkpoint firewalls. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Job Script
On Dec 29, 2007 9:47 PM, Christopher E [EMAIL PROTECTED] wrote: Hello All, Is there a way to run a script from CentOS 5 and have it look at a file and get it if its new then the file it got last time, if not it does nothing, if its a new file then it wgets the file and then unzip the file then runs a php script, I would want this to check once a week or if it would not make much of a different then each day is fine if this is able to be done can someone point me in the right direction to do such! Sincerely, Christopher The script you will need to create for yourself (or hire someone), you can create it in any language. Then call it from a cronjob on whatever schedule you want. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Clustering MySQL
On Dec 12, 2007 4:46 PM, Karanbir Singh [EMAIL PROTECTED] wrote: Matt Shields wrote: I just got my master-master servers setup and we're running mysql-server-5.0.48-1.el4.centos. I should also mention that Meetup presentation was given by Patrick Galbraith who used to work for MySQL and was responsible for adding replication to MySQL. sounds good, will you do a howto for the centos wiki ? - KB -- Karanbir Singh : http://www.karan.org/ : [EMAIL PROTECTED] I'll see what I can do. I'm so backlogged with work and I've promised quite a few docs to people, but I'll try. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Clustering MySQL
On Dec 11, 2007 12:42 PM, Karanbir Singh [EMAIL PROTECTED] wrote: Matt Shields wrote: the code). But I saw a presentation at the Boston MySQL Meetup.com group about how to do master-master in mysql 5. We're about to implement this in the next few weeks. If it's done this way both that is imho, a mysql-5.1 only feature, where you can have rbr and multimaster setups that actually work. and 5.1 isnt quite ready for release as yet :D -- Karanbir Singh : http://www.karan.org/ : [EMAIL PROTECTED] I just got my master-master servers setup and we're running mysql-server-5.0.48-1.el4.centos. I should also mention that Meetup presentation was given by Patrick Galbraith who used to work for MySQL and was responsible for adding replication to MySQL. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Clustering MySQL
On Dec 11, 2007 12:18 PM, Steve Campbell [EMAIL PROTECTED] wrote: I'm just beginning to consider using the Clustering available with CentOS. We are going to spec out some new hardware, and after reading most of the Clustering manuals, I have a small question about MySQL. I would like to run High Availability MySQL, in other words, similar to how you can run HA HTTPD and the like. The catch seems to be if I run MySQL on an individual server, with common MySQL replication to another server, how do failovers work? I see a real problem with table locking and the like. Is there a way to run multiple MySQL servers that get removed from the cluster as opposed to failing over when using the newer MySQL versions (I am running 3.23 now, so a little behind)? Thanks for any insights. There are a number of ways to do it. We currently have 1 master mysql server, and multiple replicas. We then load balance the reads only from the replicas and writes go to the master database (all handled in the code). But I saw a presentation at the Boston MySQL Meetup.com group about how to do master-master in mysql 5. We're about to implement this in the next few weeks. If it's done this way both reads and writes to the db can be load balanced. We use linuxvirtualserver.org (heartbeat, ipvsadm and ldirectord) for load balancing. You might be able to contact the Meetup organizer, Sherri http://mysql.meetup.com/137/, she usually posts the presentations online. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Clustering MySQL
On Dec 11, 2007 6:10 PM, Karanbir Singh [EMAIL PROTECTED] wrote: Matt Shields wrote: If this were master-slave, I'd probably do an LVM Snapshot and get a fresh copy of the master db. The same could be done for master-master. has a live lvm-snapshot ever worked for you as a real move-data-around policy ? you would, at the very least, need to flush in memory data, and have a system wide write lock in place while the snapshot is created. its been a tempting idea, but so far of the few people I know having tried this lvm snapshoting, have never actually managed to get it working right for mysql dumps. So, would be good to hear from someone who has it working. I didn't put all the details, we have a custom script that we run which locks the tables, does a flush, starts a lvm snapshot. We can then copy the mysql data, when the copy is done we've got a script to release the snapshot. The thing you need to remember when you image the server is to make sure you leave some unused diskspace on your partition. So for example if you have a 100GB drive, put it all into the pv and lv, but only create a 80GB vg. That gives you 20GB for the snapshot. Of course when calculating how much extra space you need, you need to think about how fast your data grows and how much time you need to do a copy of the data. If your snapshot is too small and you outgrow the snapshot before you've finished copying your data, then the snapshot will expire. Works great for us in our master - multiple slave environment. Some of our slaves even have slaves. :) -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Dec 5, 2007 5:23 PM, Amos Shapira [EMAIL PROTECTED] wrote: On 06/12/2007, Dave Augustus [EMAIL PROTECTED] wrote: If you can try with non-Xen kernels, you should get better results. Does this mean that you tried Xen kernels and DomU and it failed, then switched to non-Xen kernels on the same setup and it succeeded? I could probably bet you that you doing this on VM's is what's causing the problem. Grab some cheap old hardware and try setting this up on real machines. It will work. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 6:53 PM, Amos Shapira [EMAIL PROTECTED] wrote: On 30/11/2007, Matt Shields [EMAIL PROTECTED] wrote: Take Xen out of the picture until you learn how heartbeat and ipvsadm/ldirectord actually work. You could be having network issues because you are hosting it on a virtual server instead of on a real server. So it's kinda hard to troubleshoot if you don't even know if your configs are broken. Get two crappy boxes that you can load everything up on, configure them with heartbeat, get that working Thanks for your suggestion. The reason I use Xen (beyond the huge convenience) is that I don't have spare hardware to play with. where it will failover an IP. then add some other service like ipvsadm/ldirectord, and take things one step at a time. Don't try to setup everything all at once, it makes it harder to try to debug problems. That's exactly what (I think) I did - just stuck to instructions from someone who seems to have been in exactly the same position and got it working. As for network issues - I see the packets coming and going all right. But I also see programs just crash and burn - I've just executed BasicSanityCheck on the primary node which appeared to be working relatively fine a couple of minutes ago (at least it got more processes running after three minutes than the other node) and that failed too with core dumps. I'm using CentOS4 and RHEL4 using dag'd rpms on a few of the CentOS and RHEL boxes and built from source on some of the other ones. I haven't had a chance to try out a CentOS 5 system yet. But as to your stability questions, we've been using LVS for about 3 or 4 years now and never, ever had stability problems. So maybe I should try to get packages from dag, even though there are ones included in CentOS? Which exact version of hearbeat are you using right now? From reading the history of Linux-HA it appears there was a huge change between 1.x and 2.x 2.x -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 6:28 PM, Amos Shapira [EMAIL PROTECTED] wrote: On 30/11/2007, Matt Shields [EMAIL PROTECTED] wrote: LVS is a group of tools that do a lot of different things, the two that you are interested in are: - heartbeat - provides failover if you have two nodes (active/active or active/passive) - ipvsadm/ldirectord - provides load balancing (ie. http(s) load balancer in front of multiple web servers) As stated in a previous post we have a number of these setup in our network and we handle a lot of traffic. Some we're using for http(s) traffic, others smtp/pop/imap, others mysql (read only queries off replicas). There's no end to what what you could use heartbeat or ipvsadm/ldirectord or both for. Both packages can be installed from dag's repo. Thanks. What platform are you using? Mine is CentOS 5 on x86_64. It runs as a Xen DomU but from what I read on the linux-ha users mailing list this shouldn't be the issue. The production system will run on the bare metal (not under Xen). My experience with LVS at a previous workplace (a very large ISP) was also excellent - they had a couple of LVS servers in front of hundreds of mini-clusters (each such cluster service its own web or other network application, sometimes sharing disks using DRBD). The difference, I suspect, is that I'm trying this now with version 2.1.2 on CentOS 5 and x86_64, as opposed to possibly older version of everything (RedHat version, LVS, hardware (i386)). Thanks for your input, Take Xen out of the picture until you learn how heartbeat and ipvsadm/ldirectord actually work. You could be having network issues because you are hosting it on a virtual server instead of on a real server. So it's kinda hard to troubleshoot if you don't even know if your configs are broken. Get two crappy boxes that you can load everything up on, configure them with heartbeat, get that working where it will failover an IP. then add some other service like ipvsadm/ldirectord, and take things one step at a time. Don't try to setup everything all at once, it makes it harder to try to debug problems. I'm using CentOS4 and RHEL4 using dag'd rpms on a few of the CentOS and RHEL boxes and built from source on some of the other ones. I haven't had a chance to try out a CentOS 5 system yet. But as to your stability questions, we've been using LVS for about 3 or 4 years now and never, ever had stability problems. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 4:12 PM, Ross S. W. Walker [EMAIL PROTECTED] wrote: John R Pierce wrote: Matt Shields wrote: Dump the cluste suite and use the LinuxVirtualServer.org packages. isn't that heartbeat and stuff repackaged? Visiting the web site it appears to be a load-balancer, not that that wouldn't be useful in some scenarios, but it isn't really clustering software that is to have an application run in active/passive or active/active between multiple nodes cooperatively, with fencing and shared storage, locking and all that goes with that. -Ross LVS is a group of tools that do a lot of different things, the two that you are interested in are: - heartbeat - provides failover if you have two nodes (active/active or active/passive) - ipvsadm/ldirectord - provides load balancing (ie. http(s) load balancer in front of multiple web servers) As stated in a previous post we have a number of these setup in our network and we handle a lot of traffic. Some we're using for http(s) traffic, others smtp/pop/imap, others mysql (read only queries off replicas). There's no end to what what you could use heartbeat or ipvsadm/ldirectord or both for. Both packages can be installed from dag's repo. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 6:40 PM, Matt Shields [EMAIL PROTECTED] wrote: On Nov 30, 2007 6:28 PM, Amos Shapira [EMAIL PROTECTED] wrote: On 30/11/2007, Matt Shields [EMAIL PROTECTED] wrote: LVS is a group of tools that do a lot of different things, the two that you are interested in are: - heartbeat - provides failover if you have two nodes (active/active or active/passive) - ipvsadm/ldirectord - provides load balancing (ie. http(s) load balancer in front of multiple web servers) As stated in a previous post we have a number of these setup in our network and we handle a lot of traffic. Some we're using for http(s) traffic, others smtp/pop/imap, others mysql (read only queries off replicas). There's no end to what what you could use heartbeat or ipvsadm/ldirectord or both for. Both packages can be installed from dag's repo. Thanks. What platform are you using? Mine is CentOS 5 on x86_64. It runs as a Xen DomU but from what I read on the linux-ha users mailing list this shouldn't be the issue. The production system will run on the bare metal (not under Xen). My experience with LVS at a previous workplace (a very large ISP) was also excellent - they had a couple of LVS servers in front of hundreds of mini-clusters (each such cluster service its own web or other network application, sometimes sharing disks using DRBD). The difference, I suspect, is that I'm trying this now with version 2.1.2 on CentOS 5 and x86_64, as opposed to possibly older version of everything (RedHat version, LVS, hardware (i386)). Thanks for your input, Take Xen out of the picture until you learn how heartbeat and ipvsadm/ldirectord actually work. You could be having network issues because you are hosting it on a virtual server instead of on a real server. So it's kinda hard to troubleshoot if you don't even know if your configs are broken. Get two crappy boxes that you can load everything up on, configure them with heartbeat, get that working where it will failover an IP. then add some other service like ipvsadm/ldirectord, and take things one step at a time. Don't try to setup everything all at once, it makes it harder to try to debug problems. I'm using CentOS4 and RHEL4 using dag'd rpms on a few of the CentOS and RHEL boxes and built from source on some of the other ones. I haven't had a chance to try out a CentOS 5 system yet. But as to your stability questions, we've been using LVS for about 3 or 4 years now and never, ever had stability problems. Also, we're on a mix of i386 and x86_64 systems. But for each cluster the pair of nodes is identicle. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 4:30 AM, Amos Shapira [EMAIL PROTECTED] wrote: Hello, I'm beginning to give up on making Linux-HA's heartbeat work for my environment (CentOS x86_64) and am wondering what other option have I got to help me: 1. Use IPVS to maintain a cluster of virtual servers, either master/slave or load-balanced. 2. Use DRBD in master/slave fashion to keep a home-grown application highly-available. The first thing I stumbled upon is RedHat Cluster Suite ( http://www.linuxtopia.org/online_books/centos_linux_guides/centos_cluster_configuration_and_management/), from which I also saw some packages on my CentOS servers. I've never heard of it before and am just starting to dig its docs, but if someone here can confirm/deny that this is a possible route to take it might save me some time or doubts. Dump the cluste suite and use the LinuxVirtualServer.org packages. You won't have a gui, but it will be better in the long run. We're using that for quite a few clusters and handling about 30MBit/s on each of the clusters, I think it's around 10k concurrent connections. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 3:21 PM, Amos Shapira [EMAIL PROTECTED] wrote: On 30/11/2007, Matt Shields [EMAIL PROTECTED] wrote: Dump the cluste suite and use the LinuxVirtualServer.org packages. You won't have a gui, but it will be better in the long run. We're using that for quite a few clusters and handling about 30MBit/s on each of the clusters, I think it's around 10k concurrent connections. I also need to fail-over DRBD (i.e. so if the primary goes down the secondary will notice this, mount that DRBD partition and start the server which uses the files on it) - will LVS give me that by itself or will I need something else on top of it to do that? I got the impression that this what Linux-HA's heartbeat adds to the plain LVS but it doesn't work for me. I'm really not concerned about GUI's - I'd rather edit config files manually if they are documented well enough. --Amos Yup. We use LVS for all types of failover senarios. We use it for redundant firewall/vpn servers which use heartbeat for failing over the virtual IPs and services. We also use LVS with ldirectord as redundant load balancers. Read the docs, they explain how to set up a service to be started/stopped on failover -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Replacement for Linux-HA (heartbeat) - RedHat cluster?
On Nov 30, 2007 3:57 PM, John R Pierce [EMAIL PROTECTED] wrote: Matt Shields wrote: Dump the cluste suite and use the LinuxVirtualServer.org packages. isn't that heartbeat and stuff repackaged? With a GUI that actually makes it more difficult to manage. Learn to use the command line tools and config files, it's so much easier. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Adobe products under Linux?
On Nov 28, 2007 3:29 AM, Mark Hull-Richter [EMAIL PROTECTED] wrote: On Nov 27, 2007 3:26 PM, William L. Maltby [EMAIL PROTECTED] wrote: $ rpm -q AdobeReader_enu AdobeReader_enu-7.0.9-1.i386 I don't know about others, but this one works fine for me. I don't call this a real application as they don't support anything you don't pay for. E.g., AR 8.0 (?) is available for Windows and has been for months, now, but not for Linux. The Adobe Flash Player for (32-bit) browsers on Linux also works, most of the time, but it, too, is a free application, which means Adobe doesn't provide support for it, either. mhr Just because there is no commercial support does not mean it isn't a real application. By your same reasoning Gimp or Linux or any of the other open source applications are not real. Besides, you won't get support for Adobe Reader or Flash Player on Windows or Mac. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] reasons for using CentOS in business environments
On Nov 28, 2007 12:31 AM, Rogelio [EMAIL PROTECTED] wrote: My apologies if this question has been previously answered, but could anyone here provide me with resources that I might use to help build a case for exclusively using CentOS in an enterprise environment? (Approximately 200 servers) Long story short, I've used a little of everything out there (Gentoo/Debian/*BSD/Slackware) and have a fairly good overall strategy of how they all work (all of them have lived on my laptop at one time or another over the last 10 years or so), but I'm now looking for solid business reasons that I can present to the CxO types of a company to show them that CentOS is probably where they'd like to look. Reasons thus far I've come up with include: --free *and* fully (at least, in my experience) compatible with RHEL --fairly stable (I don't have problems unless I start mixing repos) --yum packages (almost as cool as Debian! Ok, I'm biased...or maybe I don't know how to properly use yum?) Any other suggestions / tips I might add to my list would be greatly appreciated! You won't get sued by the BSA, Microsoft, Adobe or any of the other software giants. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Announcing the CentOS on Laptops initiative
On Nov 27, 2007 10:37 AM, Count Of Dracula [EMAIL PROTECTED] wrote: On 11/26/07, Dag Wieers [EMAIL PROTECTED] wrote: Hi all, I would like to announce a CentOS on Laptops initiative. The aim is to allow everybody in the community (and on this mailinglist) to document their own experience with CentOS on their laptop (on the CentOS wiki). The goal of this initiative consists of 2 parts: - help and convince people with their own CentOS on laptop installation Are you nuts? CentOS on laptop? Why you want to kill torture people in such a cruel way? Joy Because some people may actually want to run a stable OS that will have patches released for quite a while. Fedora is not an option for most business people who rely on their laptops every day. Torture is installing the latest Fedora every 6 months and hoping something doesn't break. Some would say Fedora users are nuts. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to Load balancing
On Nov 21, 2007 2:19 PM, D. Bettancourt M. [EMAIL PROTECTED] wrote: Hi I need informmation about this Topic: Load balancing,, I have 2 nic to internet, 1 nic to DMZ, and 1 nic to LAN, but I don,t know how do that. Where I can found information ?? Thx!! For your information! Check out linuxvirtualserver.org -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mount sftp or ftp+ssl drive on windows
On Nov 17, 2007 4:07 PM, Bazy [EMAIL PROTECTED] wrote: Hello guys, I would like to mount a sftp or a ftp with ssl (vsftp with ssl) on to a Windows machine as an X: drive. So far I found SftpDrive witch costs only $39 :) and I don't want it. Do any of you have a positive experience with something like this? I need it cause I will install a very important software on that drive, witch doesn't need to be on the local disk of the windows machine. Thank you! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Check out sftpdrive. It's a windows program that mounts sftp or ssh directories as a windows drive. I think it's about $30 but it's worth it. -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best laptop for CentOS
On Nov 10, 2007 12:15 PM, Matt [EMAIL PROTECTED] wrote: Which is the best laptop to run centos on and where can I buy one without Windows Vista pre loaded cause I will uninstall it any way. Please tell me the best sites that ship worldwide. I would love to find a Linux laptop that had good wi-fi support. Including WPA and using an integrated wi-fi adaptor. Having to edit a file to connect to a secure access point is not user friendly if you ask me. I've found that IBM Thinkpad's have pretty good compatibility with RH based distro's -- -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users
On 10/24/07, Ralph Angenendt [EMAIL PROTECTED] wrote: Matt Shields wrote: Because of the way that the infrastructure is (biz reasons) we are not doing shared storage, we have numerous IMAP servers that we distribute accounts across. As we add more users, we image up a new IMAP server. For our business's scaling purposes this was the best plan. What I am having a problem is how do I get postfix to transfer the email to the particular IMAP server that the user account is on. I know that I need to use lmtp and transport, but all the examples I have seen show forwarding all email to 1 IMAP server. I would like Postfix to do a lookup for each mailbox and determine which IMAP server to deliver it to. Having no idea how that fits into your already existing infrastructure, but the Cyrus IMAPD Aggregator (also known as Cyrus IMAPD Murder) looks like something which should be evaluated - you probably can even drop the mysql database, as it really doesn't matter to which of the lmtp/imapd proxies you connect to. From what I understand about Cyrus Murder, it is for replicating your user data across multiple servers, which is good if you want to load balance multiple IMAP servers and you don't have a shared storage backend. As mentioned we have a web frontend that checks mysql when the user logs in to see which imap server the account resides on. Everyone, I have figured it out. I do plan on posting after I finish documenting the steps (for those interested). -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users
On 10/23/07, Christopher Chan [EMAIL PROTECTED] wrote: Matt Shields wrote: Data changes too frequently to generate the file every x number of minutes across all smtp servers. You have to support instantly deliverable mailboxes for new accounts? Yes, don't ask me why, it's a business thing. The mysql db isn't a single server. It's a master (read/write) with multiple replicas for read access. Those replicas are load balanced with LVS (heartbeat/ldirectord/ipvsadm). The postfix(smtp) incoming and outgoing servers are also load balanced with LVS. So database read speed is not an issue. Believe me, we know how to build large high traffic sites, the only problem we're having is the exact syntax on using transport_maps or virtual_transport with multiple lmtp transports, and I think I got that figured out with the transport_maps. Will post more later. I assume that you are aware that transport_maps is called multiple times. Recipient_maps in rdbms tables generate at least two lookups (one for smtpd, one for cleanup) but when you add transport_maps, that will at least explode to one per subdomain of the sender address (you can mitigate a lot of that with the domain setting in the map configuration file) as trivial-rewrite tries to build its triples for addresses. ___ Yes, we're aware, that why we have mysql setup with multiple incoming and outgoing smtp servers that read from a large cluster of replicated mysql servers (read-only). Not saying we won't look at creating a cron to dump maps to a local file, we might do that in the future, but just for right now we have enough horsepower to deal with what we have. -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users
Heck, I see lots of circles where they wouldn't trust mysql for an enterprise application so it seems clear that you are not talking about stability or performance but rather familiarity and the amount of trust you have in what you know. I would expect openldap to blow the doors off a mysql db but what do I know? I deal in circles 100 user accounts (small businesses). Wow it's amazing how off topic and how many opinions you get on a mailing list, when all you wanted to know was how do I specially do this or that. That's why I stated what my environment was. But, since numerous people have stated how mysql is inadequate to do what we want to do or in general for any task. We currently use mysql in a replicated environment with LVS to balance the connections for our main websites that is all dynamic. Last time I checked we were sustaining thousands of visitors per second 24 hours a day, which equaled about 3-4 thousand queries per second. So, if it can handle that load and Google trusts it in their infrastructure, then I'm not gonna replace it. It does what I need, it's reliable, it's fast and it has proven that it scales well. I think the main problem when people say you shouldn't use this product or that product because it's not good enough is they haven't set it up properly. They haven't taken the time to tune the server, the daemon, and the application. Let's face it anyone can write a query to a database (like select * from table) and if you put enough load behind it your performance is gonna suck no matter what your app or database is. But if you take time to tune your code and your database and design it so it can scale, you can efficiently use applications like mysql. Anyway, back to my original request. You can use the transport_maps feature to dynamically lookup lmtp transports on a per account basis. I have figured it out, and for those that are curious I will post when I've finished documenting everything. -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Large scale Postfix/Cyrus email system for 100,000+ users
I'm trying to set up a large scale email system that supports 100,000+ IMAP accounts. We have an existing frontend web interface that does a lookup on a mysql db to figure out which IMAP server to connect to for each user. For the email infrastructure we have decided on Postfix and Cyrus. We have configured both to use mysql to get the virtual user information. Because of the way that the infrastructure is (biz reasons) we are not doing shared storage, we have numerous IMAP servers that we distribute accounts across. As we add more users, we image up a new IMAP server. For our business's scaling purposes this was the best plan. What I am having a problem is how do I get postfix to transfer the email to the particular IMAP server that the user account is on. I know that I need to use lmtp and transport, but all the examples I have seen show forwarding all email to 1 IMAP server. I would like Postfix to do a lookup for each mailbox and determine which IMAP server to deliver it to. Anyone have a working example that they could share? It would be greatly appreciated. thanks -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users
On 10/23/07, mouss [EMAIL PROTECTED] wrote:
There are primarily two ways:
[virtual aliase]
you can use virtual_alias_maps to redirect [EMAIL PROTECTED] to
[EMAIL PROTECTED], provided the final server accepts such addresses.
If the final server doesn't accept these, and you use smtp to relay to,
then you can write the addresses back, using smtp_generic_maps.
[transport]
an laternative is to use use (per-user) transport_maps. something like
[EMAIL PROTECTED] relay:[hostN.example.com]
In bothe approaches, the mappings can be generated using sql statements
(mostly CONCAT). something like
...
query = SELECT concat('relay:[', host, '.example.com]')
FROM User
where '%u' = user and '%d' = domain
you get the idea I hope.
Anyone have a working example that they could share? It would be
greatly appreciated.
Forward's aren't acceptable. There is a way to do it with the
transport function and lmtp on a account by account basis. I'm
looking for real world configs from someone that has this working.
-matt
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Re: [CentOS] Why CentOS as a webhosting platform
For me it doesn't have to do with cost. It has to do with I've used RedHat Linux since 1995, then RHEL, then CentOS. And all this time I've used some form of RedHat or derivative on all my servers. I prefer to stick with what I know. Also, you'll notice that the majority of pre-packed Control Panel software is written for RPM based distro's. And if you're looking for webhosting, go to www.cyberbite.com -matt On 9/6/07, Karanbir Singh [EMAIL PROTECTED] wrote: Hi, CentOS seems to be doing really well in the hosting business these days, and even for people who would normally have used Windows or OSX on the hosting previously, are now looking at using CentOS. And I thought it would be nice to have a section on the wiki about exactly why that is. Not having any direct connection with the hosting business I was wondering if people here could help me out a bit and let me know why they think CentOS is good / bad as a platform in this market segment. I suppose that would include dedicated hosting, VPS hosting, Shared / Virtual hosting, and even high performance grid hosting that a few people seem to be offering these days. Once we have some material here in this thread, everything will go online at the wiki ( with due credit to all contributors ). -- Karanbir Singh : http://www.karan.org/ : [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Site down for maintenance - How is this accomplished?
Depending on the traffic level and the amount of hardware, I would recommend against what you just said. Especially if your current environment is multiple servers that are load balanced. You don't want to have to replicate the environment just to have a construction page. Instead of setting up Apache with PHP, just setup a really basic server with lighttpd and a single static page with really minimum graphics. It will serve pages and the one or two graphics a lot faster and a single server can usually handle the load. -matt On 8/24/07, Barry Brimer [EMAIL PROTECTED] wrote: On Fri, 24 Aug 2007, Matt Arnilo S. Baluyos (Mailing Lists) wrote: Hello everyone, Although we use CentOS primarily on our servers, this query is actually more of a general networking question than something specific to CentOS. In the next week or so, we shall be migrating our in-house servers to a data center. While we're doing that, we'd like to show a Site down for maintenance message while the servers that hosts our websites (we have around 15 sites hosted btw), are down. So, how is this accomplished? While I can probably hack something on our name servers, I'm sure there are people on this list that have been doing this and could give some recommendations as to the best practices for this type of task. I would have DNS for all domains point to a web server that has the following php page: = html head titleMaintenance/title /head body bgcolor=white font size=5centerMaintenance/center br centerThe server that hosts ? $_SERVER['HTTP_HOST'] ? is currently undergoing maintenance. ? $_SERVER['HTTP_HOST'] ? will return to full service as soon as possible. /center /body /html = I would also add to your httpd.conf file: = RewriteEngine on RewriteRule !^/index\.php$ /index.php [NC,L] RewriteRule !^/index\.php$ - [F] = This makes it so that anyone who connects to any URL on any of your websites will be told that the server they are connecting to is under maintenance. When you have the new server up and running, change DNS. Alternately you could place this on a server in the new location, but change the routing/NATing to temporarily deliver the addresses to the server hosting this page. If you are using SSL certificates, you will need to have them as well and create different virtualhosts, although they can all have the same DocumentRoot and web page. Hope this helps. Barry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] need help.. n do apolosize
See that link (http://lists.centos.org/mailman/listinfo/centos) at the bottom of these emails? Click on it and follow the instructions. -matt On 8/1/07, simon [EMAIL PROTECTED] wrote: Dear All, cd any one plss let me know how to subscribe to sendmail mailing lists.. i am not able to do it apprecite n thanks regards simon -- Network Administrator ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] need help.. n do apolosize
Oops, used to seeing how do I unsubscribe and fired off a response. My apologies. -matt On 8/1/07, Steve Bergman [EMAIL PROTECTED] wrote: Matt Shields wrote: See that link (http://lists.centos.org/mailman/listinfo/centos) at the bottom of these emails? Click on it and follow the instructions. Assuming that what simon is asking is how to interact with the sendmail mailing list, here is the google groups gateway to the newsgroup. I'm not sure that there is a mailing list. http://groups.google.com/group/comp.mail.sendmail/topics?lnk=srghl=en ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Re: Gnome Terminal and xterm problems
I should add that the hang occurs after an unknown amount of time. -matt On 7/12/07, Matt Shields [EMAIL PROTECTED] wrote: I've noticed this in CentOS 4 5 and Fedora 5 6. If I'm in Gnome desktop and using any of the terminal programs and I ssh into any server, the connection just hangs. Not drops, it just hangs and doesn't recover. These servers are all over the country on different ISPs in Tier1 datacenters. Some are in our office, so they are on the local lan. We have a mix of RHEL 3, 4 5 and CentOS 4 5 on the servers. If I'm using a windows computer with putty or SecureCRT this never happens, it only happens when I'm using any of our linux desktops or laptops. It doesn't matter if I'm in the office or at home (on comcast) or over at a friend's house (verizon dsl). This problem has been going on for at least two years and I'm finally fed up to the point where I might switch back to windows since 99% of my job is working while ssh'ed into servers. Anyone had similar problems? -matt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gnome Terminal and xterm problems
selinux is turned off on both servers and desktops On 7/12/07, Tru Huynh [EMAIL PROTECTED] wrote: On Thu, Jul 12, 2007 at 09:46:00AM -0400, Matt Shields wrote: I've noticed this in CentOS 4 5 and Fedora 5 6. If I'm in Gnome desktop and using any of the terminal programs and I ssh into any server, the connection just hangs. Not drops, it just hangs and doesn't recover. ssh -vvv might give a glue selinux enforced on your client machines? Tru -- Tru Huynh (CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0xBEFA581B ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gnome Terminal and xterm problems
It shouldn't be dns because the session is already established and it now IP based. I don't believe ssh tries to keep resolving the IP again and again. No session doesn't come back ever. It just hangs permanently. -matt On 7/12/07, Paul Valentin [EMAIL PROTECTED] wrote: most problem in this case is DNS!! does the session comes ca. 30sec later? problem can be: 1) the server has wrong dns-server in /etc/resolv.conf 2) the client ip is a private ip, and not in /etc/hosts 3) the server ip is not in clients /etc/hosts point 2) is the problem i have most time bg, paul Am Thu, 12 Jul 2007 10:45:50 -0400 Matt Shields [EMAIL PROTECTED] schrieb: selinux is turned off on both servers and desktops On 7/12/07, Tru Huynh [EMAIL PROTECTED] wrote: On Thu, Jul 12, 2007 at 09:46:00AM -0400, Matt Shields wrote: I've noticed this in CentOS 4 5 and Fedora 5 6. If I'm in Gnome desktop and using any of the terminal programs and I ssh into any server, the connection just hangs. Not drops, it just hangs and doesn't recover. ssh -vvv might give a glue selinux enforced on your client machines? Tru -- Tru Huynh (CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0xBEFA581B ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] non-privaledged reboot ???
Not necessarily true. Lots of people use remote KVM's :) So just because someone has access to the console does not mean they have physical access to the server. -matt On 7/8/07, Ignacio Vazquez-Abrams [EMAIL PROTECTED] wrote: On Sat, 2007-07-07 at 22:51 -0700, Robert - eLists wrote: Greetings On centos 5, if I ssh in as a regular non-superuser account and go to the sbin dir to issue a reboot command, it wont do it as says you must be superuser If you are on the console logged in as a non-superuser account and do the same thing, it will reboot. Is this a feature, or a bug? If you're at the console you can usually just push the reset or power button *anyways*, so it's a non-bug. I believe you can edit the appropriate entries in /etc/pam.d if you really want to change this. -- Ignacio Vazquez-Abrams [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Justin Morgan is out of the office.
Justin, Thanks for letting us all know. We'll keep an eye on your house while you're gone and just to make sure that your house looks lived in we'll throw parties each night. Don't worry we won't forget about you, we'll let you clean up when you get back. Have a great trip -matt On 6/18/07, Justin Morgan [EMAIL PROTECTED] wrote: I will be out of the office starting 18/06/2007 and will not return until 02/07/2007. I will respond to your message when I return. For urgent matters please contact Panbio Reception for assistance : +617 3363 7100. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Pinging Static IPs on Lan
Is iptables running? -matt On 6/12/07, Thom Paine [EMAIL PROTECTED] wrote: For some reason I can't ping or communicate with two of my machines that have static IP's on my lan. My mythbe and mythfe are both set to have static ip's in the event of some sort of power problem the wife can stillwatch tv. After installing CentOS5, I can't communicate with those two machines. I read through the release notes and the docs on dhcp, but I can't seem to see why no machines will communicate with those two computers. Thanks. -- -=/Thom ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
