Re: [CentOS] iptables details

2008-04-22 Thread Christopher Chan
Fajar Priyanto wrote: Hi all, I'm a bit confused reading the RHEL System-Administrator-Guide regarding this: (1) iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to 10.1.2.253:80 (2) iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to-destination 10.1.2.253:80

Re: [CentOS] RHCE Training

2008-04-24 Thread Christopher Chan
My advice for the exams would be don't over think the questions and know which man pages have examples you can gain experience from. :) Interestingly the pass rate isn't as high as I would have thought. Ha! I heard a story from someone back in 2001 that a company sent twelve of their

Re: [CentOS] clustered mail server?

2008-05-17 Thread Christopher Chan
I don't have a problem to solve, but I don't know which mail server to use either. But, like I said, ideally I'd like to use one of the groupware type mailserver (POP3, SMTP, IMAP, calendar, address book, etc) What you want is a centralised and yet distributed user information database

Re: [CentOS] CentOS-DS

2008-05-17 Thread Christopher Chan
Karanbir Singh wrote: Johnny Hughes wrote: I am looking at deploying a directory server in a small network. Currently looking at Fedora-ds and I noticed that CentOS is currently working on one. Does anyone know if the CentOS-DS is working well at However, if I were you, I would look at

Re: [CentOS] clustered mail server?

2008-05-17 Thread Christopher Chan
Thank you for your input. I can't justify exchange (and don't want MS) for 10 users. I do want IMAP though, and the calendar address book would be nice. This IMO has nothing todo with CentOS though, but at the same time it shouldn't be limited to which Linux distro I'm using. As you have

Re: [CentOS] clustered mail server?

2008-05-17 Thread Christopher Chan
re: mail servers specifically, there are two seperate classes of storage that would need replication... One is the mail spools and queues as used by the MTA (postfix, sendmail, etc), and the other are the user mail folder(s) as used by the local delivery agent (procmail or whattever), and

Re: [CentOS] CentOS-DS

2008-05-17 Thread Christopher Chan
Neil Muller wrote: On 18/05/2008, at 4:25 AM, Karanbir Singh wrote: Neil Muller wrote: I think it's a java based app. You can download from http://www.sun.com/download/index.jsp?cat=Identity%20Managementtab=3subcat=Directory%20Server does it work with openjdk as yet ? I've only

Re: [CentOS] clustered mail server?

2008-05-18 Thread Christopher Chan
Rudi Ahlers wrote: Karanbir Singh wrote: Rudi Ahlers wrote: Well, that's one of the problems I foresee, but also the fact that each email has a unique message ID, so I don't know if the backup server will pickup the changed messages ID's or not? I have been thinking of running a MySQL backed

Re: [CentOS] clustered mail server?

2008-05-18 Thread Christopher Chan
No, mail spools/queues do not need replication. Stuff in the queue are usually deleted in a second and such dynamic change is not worth replicating. If you do put the queue on a distributed filesystem, in most cases you cannot have more than one instance running save for sendmail.

Re: [CentOS] clustered mail server?

2008-05-18 Thread Christopher Chan
Karanbir Singh wrote: Christopher Chan wrote: No, mail spools/queues do not need replication. Stuff in the queue are usually deleted in a second and such dynamic change is not worth replicating. If you do put the queue on a distributed filesystem, in most cases you cannot have more than one

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
DRBD works approximately like raid1 mirroring. Unless something breaks it shouldn't add much latency since the duplicate disk will run at approximately the same speed as the master. RAID1 + network latency. Got it. ___ CentOS mailing list

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
Karanbir Singh wrote: Christopher Chan wrote: I am sorry but I do not share that view for incoming mail. The latency in getting the mail replicated probably is longer than it takes to do the actually delivery to the mail store. I am not sure what you mean by the word 'replication

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
John R Pierce wrote: Christopher Chan wrote: That default setting is no longer applicable today. Users will scream if they find out that their mails have been sitting in the queue for a day. For today's businesses, one day can make or break a deal and so email, being a much faster form

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
Ralph Angenendt wrote: Christopher Chan wrote: Okay, Les helped me with that one. RAID1 on the network. So you would have to use GFS or something like that with it and have the service down on the secondary unless it was sendmail you were running. No and yes. You can just use ext3 on both

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
Christopher Chan wrote: Ralph Angenendt wrote: Christopher Chan wrote: Okay, Les helped me with that one. RAID1 on the network. So you would have to use GFS or something like that with it and have the service down on the secondary unless it was sendmail you were running. No and yes. You can

Re: [CentOS] clustered mail server?

2008-05-19 Thread Christopher Chan
Ralph Angenendt wrote: Christopher Chan wrote: Ralph Angenendt wrote: No and yes. You can just use ext3 on both nodes as you normally only have the one on the primary node mounted - the other one is not accessed by anything. And yes, with heartbeat you just failover to the second node

Re: [CentOS] samba question

2008-05-22 Thread Christopher Chan
david chong wrote: Hi, I am running Centos5.1, trying to configure samba now. I am quite new in this area and hope help from the list. Have you ever tried going through the Samba Howto or the Using Samba book material that comes free with samba in html format? If you want help, then you

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-22 Thread Christopher Chan
Your way has the advantage of letting you add disks in pairs, but to get that you get only single-disk redundancy: if a second disk goes out, your array is gone, no matter which disk it is. Nah, if you lose both disks that belong to the same stripe array, the other stripe array is still

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-22 Thread Christopher Chan
And stick with md-raid 10 (also known as software raid) because it is much more intelligently designed than any closed-source-embedded-raid-controller. This was valid until...quite a few years ago. Nowadays hardware raid frightens me because of the need to have spare raid-controllers for

Re: [CentOS] samba question

2008-05-22 Thread Christopher Chan
I notice in the example running smbclient -L localhost -U% will output the line below: ADMIN$ IPC IPC Service (Samba 3.0.20) but from my C5.1, I don't have this line, other lines are the same, can anyone explain this line, wondering if this is where the problem lies. Run testparm and tell us

Re: [CentOS] samba question

2008-05-23 Thread Christopher Chan
david chong wrote: On 5/23/08, John [EMAIL PROTECTED] wrote: Can you ping the Samba Server by the Server name? Pinging server name, From the server itself can ping. Irrevelant to network problems FYI. However from winxp client cannot ping by server name, can only ping by ip address.

Re: [CentOS] Re: RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
William Warren wrote: I'm not a fan of RAID 5 at all since it can only tolerate one failure at all. Go with raid 10 or something like that which is able to handle more than one failure. Intermittent, uncorrectable sector failures during rebuilds are becoming an increasing problem with

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Why are you still using CentOS 4? Do you have an issue with Centos 4? I prefer to wait for RH to work most of the kinks with their new releases. Centos 5 has new versions of various libraries and software. They have never been able to guarantee zero breakage. Eg: I have heard of

Re: [CentOS] CentOS-Samba question

2008-05-25 Thread Christopher Chan
MHR wrote: My main system is a CentOS 5.1 64-bit desktop with gobs of disk and a couple of printers attached that work just fine. I have it set up with samba so my VMWare guest Windows XP can access most of the files and the printers. But, when I try to connect to the printers from a

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
So they say, and correct me if i'm wrong, that RAID10 is a RAID 1 of RAID 0. A mirror of stripe sets. You said it's not that, i lost you on this one. Heh, I dare say most of us are lost on this one. It is a blinking new module for md that is not available on Centos 4. This should help

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Linux wrote: On Fri, May 23, 2008 at 4:19 AM, Christopher Chan [EMAIL PROTECTED] wrote: And stick with md-raid 10 (also known as software raid) because it is much more intelligently designed than any closed-source-embedded-raid-controller. This was valid until...quite a few years ago. Has

Re: [CentOS] Re: RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Ross S. W. Walker wrote: Christopher Chan wrote: William Warren wrote: I'm not a fan of RAID 5 at all since it can only tolerate one failure at all. Go with raid 10 or something like that which is able to handle more than one failure. Intermittent, uncorrectable sector failures during

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Just asking. I don't use CentOS as a desktop OS, so the firefox problem doesn't bother me at all, but CentOS 5 is an upgrade in many regards, and I find it very stable. I have yet to try RAID10 with it though, as soon as I can get my hands on enough spare HDD's :) I believe you cannot do

Re: [CentOS] Re: RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Nikolay Ulyanitsky wrote: I can not comment on most vendors but for the PROGRESS RDBMS RAID5 is definitely not recommended. It will work but you will see a significant reduction in performance. We strongly recommend that our clients go with RAID10 (as in RAID 1+0). In-house we only use RAID10.

Re: [CentOS] RAID5 or RAID50 for database?

2008-05-25 Thread Christopher Chan
Linux wrote: On Mon, May 26, 2008 at 3:16 AM, Christopher Chan [EMAIL PROTECTED] wrote: I believe you cannot do it via the installer yet. Can anybody confirm the presence of raid10 personality in Centos 5? Installer does not have raid10 as an option. Not sure whether boot cd has this module

Re: [CentOS] CentOS-Samba question

2008-05-27 Thread Christopher Chan
MHR wrote: On Sun, May 25, 2008 at 3:38 AM, Christopher Chan [EMAIL PROTECTED] wrote: Do they should up if you run the command below in the Linux host? smbclient -L //localhost I'm guessing you meant show up and yes, everything looks normal, but only if I use a -U option with a known user

Re: [CentOS] Learning some sad things about the state of IPv6

2008-05-29 Thread Christopher Chan
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

Re: [CentOS] Learning some sad things about the state of IPv6

2008-05-29 Thread Christopher Chan
Matt Shields wrote: 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. Not sure about FC6, but in both CentOS 4 5 there is an ip6tables. I haven't used

Re: [CentOS] offline file shares

2008-05-30 Thread Christopher Chan
gopinath wrote: can we configure offline file shares in samba as we do on a windows pc Whatcha mean? Prevent offline caching? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Learning some sad things about the state of IPv6

2008-05-30 Thread Christopher Chan
Exactly!!! What he's complaining about is the lack of lazy-man's GUI tool to configure ip6tables. I may be ethnic Chinese but I grew in Sierra Leone and English is what I use from day to day and I cannot read Chinese characters...or do not recognise enough to claim literacy anyway. Are

Re: [CentOS] several servers

2008-06-02 Thread Christopher Chan
[EMAIL PROTECTED] wrote: hi, i have @server1.domain.com, #server2.domain.com, @server3.domain.com and @server4.domain.com and i distrib the e-mail users in that four servers for equal. 2 servers have: dovecot+sendmail+mailscanner+spamassassin+clamav+ssl/tls+squirrelmail and other two have:

Re: [CentOS] I need hardware advice here

2008-06-03 Thread Christopher Chan
Victor Padro wrote: Hello all, I just been wasting time with an Asus mobo trying to get CentOS/RHEL up and running for my home lab using Xen Technologies and need an advice in order to have a fully working Box, got any suggestions? Use acpi=off or noapic to deal with broken Asus bioses.

Re: [CentOS] Re: several servers

2008-06-03 Thread Christopher Chan
[EMAIL PROTECTED] wrote: ok..i can install dovecot+postfix+MYSQL..etc..and maybe the problem it's resolve. i don't have problem with the machines, the machines are goods, my problem is the tranparent receive e-mails to the users than are distributed in four machines with the same number the

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-11-30 Thread Christopher Chan
On Wednesday, December 01, 2010 11:37 AM, Nico Kadel-Garcia wrote: On Tue, Nov 30, 2010 at 10:28 PM, Marko Vojinovicvvma...@gmail.com wrote: On Tuesday 30 November 2010 20:54:37 m.r...@5-cent.us wrote: And about apache... most of those attacks are preventable through defensive configuration

Re: [CentOS] awk help

2010-12-01 Thread Christopher Chan
On Thursday, December 02, 2010 05:09 AM, ann kok wrote: Hi all Anyone can help to let me know how to ls -1 | lsattr lsattr `ls -1` ls -al /folder | awk '{ print $2}' | lsattr for i in `ls -al /folder | awk '{ print $8}'`; do lsattr /folder/$i; done

Re: [CentOS] 1 Gbit/s Ethernet NIC under CentOS

2010-12-01 Thread Christopher Chan
On Thursday, December 02, 2010 03:28 AM, Steve Thompson wrote: On Wed, 1 Dec 2010, Timo Schoeler wrote: Intel. Broadcom. That's what we use here w/o any issues; however, there are some Intel NICs that are *not* able to handle Jumbo Frames due to an internal design glitch. Seconded. I have a

Re: [CentOS] 1 Gbit/s Ethernet NIC under CentOS

2010-12-01 Thread Christopher Chan
On Thursday, December 02, 2010 07:50 AM, Ross Walker wrote: On Dec 1, 2010, at 5:10 PM, Christopher Chanchristopher.c...@bradbury.edu.hk wrote: On Thursday, December 02, 2010 03:28 AM, Steve Thompson wrote: On Wed, 1 Dec 2010, Timo Schoeler wrote: Intel. Broadcom. That's what we use here

Re: [CentOS] awk help

2010-12-01 Thread Christopher Chan
On Thursday, December 02, 2010 07:57 AM, Les Mikesell wrote: On 12/1/2010 5:44 PM, Ross Walker wrote: On Dec 1, 2010, at 5:07 PM, Christopher Chanchristopher.c...@bradbury.edu.hk wrote: On Thursday, December 02, 2010 05:09 AM, ann kok wrote: Hi all Anyone can help to let me know how to

Re: [CentOS] 1 Gbit/s Ethernet NIC under CentOS

2010-12-02 Thread Christopher Chan
On Thursday, December 02, 2010 06:53 PM, Peter Kjellström wrote: For completeness (since many previous posts have touched on this), we don't use jumbo frames since we have no problem reaching wirespeed with normal 1500 frames. Seriously? What switches?

Re: [CentOS] 1 Gbit/s Ethernet NIC under CentOS

2010-12-02 Thread Christopher Chan
On Thursday, December 02, 2010 08:28 PM, Peter Kjellström wrote: On Thursday 02 December 2010 12:22:38 Christopher Chan wrote: On Thursday, December 02, 2010 06:53 PM, Peter Kjellström wrote: For completeness (since many previous posts have touched on this), we don't use jumbo

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-06 Thread Christopher Chan
On Tuesday, December 07, 2010 08:57 AM, David wrote: Folks I have been following the IPV6 comments. What concerns me with the loss of NAT are the following issues: 1) My friend from half-way around the world comes to visit. He turns on his IPV6 enabled device (think Ipad), and wants to

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-07 Thread Christopher Chan
On Tuesday, December 07, 2010 11:08 AM, Todd Rinaldo wrote: On Dec 6, 2010, at 7:51 PM, Christopher Chan wrote: On Tuesday, December 07, 2010 08:57 AM, David wrote: Folks I have been following the IPV6 comments. What concerns me with the loss of NAT are the following issues: 1) My

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-07 Thread Christopher Chan
On Tuesday, December 07, 2010 07:23 PM, Mathieu Baudier wrote: b) Do I get charged by my ISP on a per-device basis? Heh, if they want to micromanage... This is no science fiction. Never said it was. Some big providers in some countries limit the number of device that can connect to

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-07 Thread Christopher Chan
On Wednesday, December 08, 2010 03:11 AM, Ben McGinnes wrote: On 7/12/10 8:33 PM, Christopher Chan wrote: Ah, I must pity you who have to live with what you've got in the United States being under the rule of these tyrants. You guys probably can only dream of getting a 100MB fibre connection

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-08 Thread Christopher Chan
On Wednesday, December 08, 2010 05:10 PM, Ben McGinnes wrote: The even more horrendous problem, which is so pervasive it affects everyone, is the insistence on asymmetric connections. Even when Australia does get this fabled fibre-to-the-home, it still won't be symmetric. *sigh* Fibre

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Wednesday, December 08, 2010 09:31 PM, Les Mikesell wrote: On 12/8/10 4:22 AM, David Sommerseth wrote: On 30/11/10 03:52, cpol...@surewest.net wrote: Christopher Chan wrote: Les Mikesell wrote: [...snip...] As was already mentioned in another post, run in permissive mode, for a few days

Re: [CentOS] The Natives are Restless!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 03:40 AM, John Hinton wrote: Has anyone noticed over the years, that every time a major new CentOS release is just about to happen, suddenly there starts to be a few very long and drawn out threads? Really? Interesting. Has anyone ever considered that the

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Wednesday, December 08, 2010 11:03 PM, William Warren wrote: On 12/8/2010 9:13 AM, Christopher Chan wrote: On Wednesday, December 08, 2010 09:31 PM, Les Mikesell wrote: On 12/8/10 4:22 AM, David Sommerseth wrote: On 30/11/10 03:52, cpol...@surewest.net wrote: Christopher Chan wrote: Les

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 05:00 AM, Warren Young wrote: On 12/8/2010 7:13 AM, Christopher Chan wrote: Such [periodic failures] are fairly common I'd say the main reason someone chooses CentOS (or another Linux flavor with similar policies, like Ubuntu LTS) is that the distro provider

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 02:55 AM, David Sommerseth wrote: Second, iptables is a de-facto standard for Linux, just as pf is pretty much the standard firewalling on BSD. Windows and Solaris got their own firewalling methods as well. My point is, neither of them are any Posix standards

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 03:40 AM, Les Mikesell wrote: How many of those use the same commands to start/stop/save-current-config? Where do they keep the configs? How If you deployed applications on all of them, how much time would it take to train the operators that do the install and

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 06:55 AM, Lamar Owen wrote: On Wednesday, December 08, 2010 05:11:23 pm Warren Young wrote: Let's not drag the desktop user into this discussion, too. Why not? Are there no CentOS desktop users out there? Are the needs of the desktop just to be ignored? I

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 08:41 AM, Les Mikesell wrote: On 12/8/2010 6:14 PM, Christopher Chan wrote: On Thursday, December 09, 2010 03:40 AM, Les Mikesell wrote: Or rather stop telling people not to use SELinux and iptables on this list just because you don't want to use any

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-08 Thread Christopher Chan
On Thursday, December 09, 2010 11:06 AM, Warren Young wrote: On 12/8/2010 5:00 PM, Christopher Chan wrote: On Thursday, December 09, 2010 05:00 AM, Warren Young wrote: I assume you mean to advocate running updates infrequently, No, I advocate setting up SELinux properly which will take care

Re: [CentOS] [OT]Asymmetric connections

2010-12-09 Thread Christopher Chan
On Wednesday, December 08, 2010 11:11 PM, Lamar Owen wrote: On Tuesday, December 07, 2010 10:37:02 pm Christopher Chan wrote: On Wednesday, December 08, 2010 03:11 AM, Ben McGinnes wrote: The even more horrendous problem, which is so pervasive it affects everyone, is the insistence

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-09 Thread Christopher Chan
On Thursday, December 09, 2010 11:08 PM, Lamar Owen wrote: On Wednesday, December 08, 2010 10:06:34 pm Warren Young wrote: That's great if you are wise enough to forsee all problems that an automatic update can cause. I am not that wise. Nor am I; that's why I have testing server VM's on

Re: [CentOS] SELinux - way of the future or good idea but !!!

2010-12-09 Thread Christopher Chan
On Thursday, December 09, 2010 11:39 PM, Tom H wrote: SELinux came as a result that someone found weaknesses and wanted to try avoid security issues. Just like when firewalls began to become so popular 20-30 years ago or so. There was a need to improve something, and someone did the job.

Re: [CentOS] [OT]Asymmetric connections

2010-12-09 Thread Christopher Chan
On Friday, December 10, 2010 03:12 AM, Marko Vojinovic wrote: On Thursday 09 December 2010 11:00:58 Christopher Chan wrote: On Wednesday, December 08, 2010 11:11 PM, Lamar Owen wrote: Or would you prefer paying kilobucks per month for a tariffed OC3/12/48 or Gigabit provisioned Metro E

Re: [CentOS] [OT]Asymmetric connections

2010-12-09 Thread Christopher Chan
On Thursday, December 09, 2010 10:59 PM, Lamar Owen wrote: On Thursday, December 09, 2010 06:00:58 am Christopher Chan wrote: On Wednesday, December 08, 2010 11:11 PM, Lamar Owen wrote: Or would you prefer paying kilobucks per month for a tariffed OC3/12/48 or Gigabit provisioned Metro E

Re: [CentOS] Issues with CentOS in enterprise

2010-12-13 Thread Christopher Chan
On Tuesday, December 14, 2010 02:28 AM, m.r...@5-cent.us wrote: Oog... I just looked that up http://www.thinkgeek.com/homeoffice/kitchen/dea2/?source=google_home_officecpg=ogho1gclid=CLiQtsPt6aUCFRVx5QodJHRAYQ mark not sure I want to know where no man has cut before There,

[CentOS] Cloud demographics

2010-12-21 Thread Christopher Chan
Please turn off troll detectors. Especially those with big automatic hammers. http://thecloudmarket.com/stats#/by_platform_definition Anybody 'extra' bandwidth from the 'Cloud'? Ubuntu installations currently trumps the combined numbers of Centos, Fedora and RHEL (not that using

Re: [CentOS] Ext4 on CentOS 5.5 64bit

2010-12-23 Thread Christopher Chan
On Thursday, December 23, 2010 11:08 PM, Ross Walker wrote: On Dec 23, 2010, at 2:12 AM, cpol...@surewest.net wrote: Matt wrote: Is ext4 stable on CentOS 5.5 64bit? I have an email server with a great deal of disk i/o and was wandering if ext4 would be better then ext3 for it? Before

Re: [CentOS] Ext4 on CentOS 5.5 64bit

2010-12-23 Thread Christopher Chan
On Friday, December 24, 2010 12:02 AM, Les Mikesell wrote: On 12/23/2010 9:08 AM, Ross Walker wrote: On Dec 23, 2010, at 2:12 AM, cpol...@surewest.net wrote: Matt wrote: Is ext4 stable on CentOS 5.5 64bit? I have an email server with a great deal of disk i/o and was wandering if ext4 would

Re: [CentOS] Ext4 on CentOS 5.5 64bit

2010-12-23 Thread Christopher Chan
On Friday, December 24, 2010 05:25 AM, Ross Walker wrote: I'd stick with ext3 + data=journal with the journal either on some uber fast and large external BBU nvram block device (you can get up to 1TB with speeds of 750MiB/sec+ if you have a fat enough bus) or on hardware raid with sufficient

Re: [CentOS] Ext4 on CentOS 5.5 64bit

2010-12-23 Thread Christopher Chan
On Friday, December 24, 2010 01:03 AM, Les Mikesell wrote: On 12/23/2010 10:28 AM, Christopher Chan wrote: Matt wrote: Is ext4 stable on CentOS 5.5 64bit? I have an email server with a great deal of disk i/o and was wandering if ext4 would be better then ext3 for it? Before committing

Re: [CentOS] ext4 or XFS

2011-01-11 Thread Christopher Chan
On Wednesday, January 12, 2011 02:55 AM, compdoc wrote: XFS is safe - lots of protection for your data, but it cuts write speeds in half. When did XFS start looking like reiserfs? Lots of protection for your data? Let's see, super aggressive caching and no data journaling only metadata

Re: [CentOS] ext4 or XFS

2011-01-11 Thread Christopher Chan
On Wednesday, January 12, 2011 08:51 AM, compdoc wrote: Lots of protection for your data? Let's see, super aggressive caching and no data journaling only metadata journaling, what on earth are you blabbering about? Use XFS with anything that has no BBU cache support or barrier support and

Re: [CentOS] ext4 or XFS

2011-01-11 Thread Christopher Chan
On Wednesday, January 12, 2011 10:07 AM, compdoc wrote: I never said it was native. zfs-fuse.x86_64 Not a Centos or a RHEL package. Please don't bring up experimental software in threads that are comparing filesystems for production use. If you want to suggest ZFS, you should suggest that the

Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster

2011-01-25 Thread Christopher Chan
On Wednesday, January 26, 2011 05:24 AM, Les Mikesell wrote: On 1/25/2011 2:49 PM, Rob Kampen wrote: So what happens when one does the monthly tuesday patches for windoze and your security door controller running on SQLserver (micro$oft) fails. Back out all the patches - inform micro$oft -

Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster

2011-01-25 Thread Christopher Chan
On Wednesday, January 26, 2011 11:55 AM, Always Learning wrote: On Tue, 2011-01-25 at 14:25 -0800, Benjamin Smith wrote: On Tuesday, January 25, 2011 11:20:34 am Always Learning wrote: Then one day a big bad wolf called Oracle of very expensive Oracle SQL fame swallowed Red Hat, like they

Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster

2011-01-25 Thread Christopher Chan
On Wednesday, January 26, 2011 12:41 PM, Barry Brimer wrote: Quoting Always Learningcen...@g7.u22.net: On Tue, 2011-01-25 at 13:12 -0500, Robert Heller wrote: At Tue, 25 Jan 2011 17:49:39 + CentOS mailing listcentos@centos.org wrote: Anyone any idea what kernel version Centos 6 will

Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster

2011-01-25 Thread Christopher Chan
On Wednesday, January 26, 2011 01:37 PM, Always Learning wrote: On Wed, 2011-01-26 at 13:27 +0800, Christopher Chan wrote: Surely you mean stuff from the rising sun Illumos and OpenIndiana! Nope. Not convinced by what I read about them. Still have my unused Open Solaris disks from 2008.05

Re: [CentOS] Some RAID-6 observations ... RHEL-6 vs CentOS-5.5

2011-02-10 Thread Christopher Chan
On Friday, February 11, 2011 02:36 AM, Chuck Munro wrote: I'm hoping CentOS-6 doesn't present me with the same problem. Because I'm not a registered RHEL user, I don't have the ability to submit a bug report at RedHat. You don't have to be an RHEL user to file a bug report according to

Re: [CentOS] Strange Kernel for Centos 5.5

2011-02-11 Thread Christopher Chan
On Saturday, February 12, 2011 05:27 AM, m.r...@5-cent.us wrote: John R Pierce wrote: On 02/11/11 8:39 AM, m.r...@5-cent.us wrote: They have*everything* to do. Look, I*said* this is OT, but since you insist, the overwhelmingly*bad* design decision was to put the GUI into ring 0, instead of

Re: [CentOS] Strange Kernel for Centos 5.5

2011-02-12 Thread Christopher Chan
On Saturday, February 12, 2011 09:02 PM, Natxo Asenjo wrote: On Sat, Feb 12, 2011 at 3:38 AM, Drewdrew@gmail.com wrote: RHEL and CentOS have much, much tighter basic privilege handling. The complexity of the NTFS ACL structure, for example, is so frequently mishandled that it's often

Re: [CentOS] Strange Kernel for Centos 5.5

2011-02-12 Thread Christopher Chan
On Sunday, February 13, 2011 03:38 AM, Natxo Asenjo wrote: On Sat, Feb 12, 2011 at 2:09 PM, Christopher Chan christopher.c...@bradbury.edu.hk wrote: On Saturday, February 12, 2011 09:02 PM, Natxo Asenjo wrote: Anyway, neither in windows nor in unix/linux you want to specify permissions

Re: [CentOS] PCI-X/PCIe RAID controller.

2011-04-09 Thread Christopher Chan
On Saturday, April 09, 2011 09:14 PM, Drew wrote: cheap scsi raid? good luck. maybe something on ebay, but then its Caveat Emptor, and likely the raid batteries will be dead or dying. What speed is your scsi backplane? you can't get Ultra/320 speeds across older backplanes that were

Re: [CentOS] PCI-X/PCIe RAID controller.

2011-04-09 Thread Christopher Chan
On Saturday, April 09, 2011 10:47 PM, Drew wrote: The key is the backplane, not the drives. You should be able to get u320 speeds if you have enough u160 drives. Does five drives count? I guess that depends on whether they can flood an u320 bus. If they are 10k/15k rpm drives, I'd think

Re: [CentOS] PCI-X/PCIe RAID controller.

2011-04-10 Thread Christopher Chan
On Sunday, April 10, 2011 04:30 AM, John R Pierce wrote: On 04/09/11 8:11 AM, Christopher Chan wrote: On Saturday, April 09, 2011 10:47 PM, Drew wrote: The key is the backplane, not the drives. You should be able to get u320 speeds if you have enough u160 drives. Does five drives count? I

Re: [CentOS] ext4 support in anaconda?

2011-04-10 Thread Christopher Chan
On Monday, April 11, 2011 10:53 AM, Brandon Ooi wrote: On Sun, Apr 10, 2011 at 6:54 PM, Phil Schaffner philip.r.schaff...@nasa.gov mailto:philip.r.schaff...@nasa.gov wrote: S.Tindall wrote on 04/10/2011 01:46 PM: Just boot the installer with the ext4 option and anaconda will be

Re: [CentOS] compiling xvnc

2011-04-10 Thread Christopher Chan
Hi, On Monday, April 11, 2011 11:06 AM, Michel Donais wrote: Just new to Centos 5.6. I'm trying to install an Xvnc server rpm -qf /usr/bin/Xvnc vnc-server-4.1.2-14.el5_5.4 Maybe you just install the vnc-server package? Can somebody point me a solution? As above

Re: [CentOS] Dag's RHEL Rebuild Project.

2011-04-11 Thread Christopher Chan
On Tuesday, April 12, 2011 10:12 AM, Antaryami Khuda wrote: I see um twitter dag's want to start his own RHEL rebuild. Dag how much monies you do need? I make contribution of 5.000 rupee if other join. I'll cough up 5,000 leones when I get them! Hordes, prepare to move out!

Re: [CentOS] How can a company help, officially?

2011-04-12 Thread Christopher Chan
On Tuesday, April 12, 2011 10:07 PM, Karanbir Singh wrote: On 04/12/2011 02:06 PM, Les Mikesell wrote: There are pages in the wiki that already describe what we are doing right now. Really? Where do I look to see what has been tried with packages that are currently failing QA or not building

[CentOS] test

2007-10-21 Thread Christopher Chan
Please excuse me. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] restrict network access

2007-10-22 Thread Christopher Chan
umair shakil wrote: Salam, Squid actually Proxy will do the trick Nope. Not if they are installed on those PCs. Regards, Umair Shakil ETD On 10/19/07, *Arne Pelka* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi, I have two pc using centos 4, these machines need

Re: [CentOS] Re: Site about qmail (with CentOS as SO)

2007-10-22 Thread Christopher Chan
Karanbir Singh wrote: John R Pierce wrote: Scott Silva wrote: CentOS does not have any control to insert any links into the qmail.org site. or even come with qmail. CentOS includes sendmail and postfix. and lets not forget the one true MTA to rule them all : Exim! Where do we join

Re: [CentOS] Site about qmail (with CentOS as SO)

2007-10-22 Thread Christopher Chan
Chris Mauritz wrote: Christopher Chan wrote: It is like a step-by-step book, that intendes to *really* help people getting their servers up and running. I would really rather make qmail newbies go through the flames and really learn how qmail works than let them loose with a list

Re: [CentOS] Centos 5 on Large Disks.

2007-10-23 Thread Christopher Chan
I know that XFS gets all the press about being a great performing file system ... but if you want the best stability on CentOS, you should at least consider ext3 instead. +1 I have worked very hard to get stable code for xfs in centos-4 and centos-5, and lots of people use it, but (IMHO)

Re: [CentOS] Centos 5 on Large Disks.

2007-10-23 Thread Christopher Chan
Shawn Everett wrote: I will be telling them wait for a power loss, wait for the XFS code to shut down one of its filesystem for no reason, take a good look at the neverending stream of bug fixes in the mainline kernel, take a look at those kernel developers who have openly announced they want

Re: [CentOS] Re: Site about qmail (with CentOS as SO)

2007-10-23 Thread Christopher Chan
Scott Silva wrote: on 10/22/2007 9:21 PM Christopher Chan spake the following: Chris Mauritz wrote: Christopher Chan wrote: It is like a step-by-step book, that intendes to *really* help people getting their servers up and running. I would really rather make qmail newbies go through

Re: [CentOS] Large scale Postfix/Cyrus email system for 100,000+ users

2007-10-23 Thread Christopher Chan
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

Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users

2007-10-23 Thread Christopher Chan
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? The mysql db isn't a single server. It's a master (read/write) with multiple replicas for read

Re: [CentOS] Centos 5 on Large Disks [SOLVED]

2007-10-23 Thread Christopher Chan
So, i have been quite moronic in not trying to apply logic initially. Please leave that term for those who really deserve it. As for not trying perhaps the lazy label is more suitable :-P ___ CentOS mailing list CentOS@centos.org

Re: [CentOS] Re: Site about qmail (with CentOS as SO)

2007-10-24 Thread Christopher Chan
Ralph Angenendt wrote: Christopher Chan wrote: Ah but you cannot just replace it with another radio and expect it to work...sendmail and postfix have very different interfaces and design. They have their own ways of handling. Do we have to entertain stuff like writing/debugging sendmail

Re: [CentOS] Large scale Postfix/Cyrus email system for 100,000+ users

2007-10-24 Thread Christopher Chan
I thought the usual ways of doing this were to either use a high-performance NFS server (netapp filer...) and maildir format so you can run imap from any client facing server, or to keep the delivery host information in an LDAP attribute that you find when validating the address. This is

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