Re: [CentOS-docs] Images for CentOS Documentation
Am 04.03.11 17:06, schrieb Andreas Rogge: I'm currently porting the public and free parts of Red Hat Documentation to CentOS. Being unable to do anything graphics-related, I need someone to provide the following images: logo.svg 300x140 CentOS Logo image_left.png124x39 CentOS Logo image_right.png 120x41 CentOS Documentation Logo (to be designed) a) and b) shouldn't be a problem, Ican do those tomorrow. Regarding c) - for what is that needed? How does that look within RHEL? Probably can do one too, but need to know what it stands for :) Sorry for the late reply, wasn't really there over the weekend. Regards and thanks, Ralph ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
[CentOS] connection speeds between nodes
Hi All, I've been asked to setup a 3d renderfarm at our office , at the start it will contain about 8 nodes but it should be build at growth. now the setup i had in mind is as following: All the data is already stored on a StorNext SAN filesystem (quantum ) this should be mounted on a centos server trough fiber optics , which in its turn shares the FS over NFS to all the rendernodes (also centos). Now we've estimated that the average file send to each node will be about 90MB , so that's what i like the average connection to be, i know that gigabit ethernet should be able to that (testing with iperf confirms that) but testing the speed to already existing nfs shares gives me a 55MB max. as i'm not familiar with network shares performance tweaking is was wondering if anybody here did and could give me some info on this? Also i thought on giving all the nodes 2x1Gb-eth ports and putting those in a BOND, will do this any good or do i have to take a look a the nfs server side first? thanks, Wessel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: grep regex pointer appreciated
Hello,
On my opinion, grep is not powerful enough in order to achieve what you want.
It would be preferable to use at least some (old but
powerful) tools such sed, awk, or even better : perl. Actually, what you need
is a tool providing a capture buffer (this is perl
jargon - back references in sed jargon) in which you can get the string you
want to extract, rather than trying to build up a
positive matching regex, as the string boundaries seem to be easy enough to
describe with regexs.
Regards
---
Robert GRASSO System engineer
CEDRAT S.A.
15 Chemin de Malacher - Inovallée - 38246 MEYLAN cedex - FRANCE
Phone: +33 (0)4 76 90 50 45 - Fax: +33 (0)4 56 38 08 30
mailto:robert.gra...@cedrat.com - http://www.cedrat.com
-Message d'origine-
De : centos-boun...@centos.org
[mailto:centos-boun...@centos.org] De la part de Patrick Lists
Envoyé : 5 mars 2011 23:14
À : CentOS mailing list
Objet : [CentOS] OT: grep regex pointer appreciated
Hi,
My grep regex foo is not very good and googling is getting me
nowhere so
hopefully someone is kind enough to give me some pointers.
Goal: grep (non .dbg) filenames and versions from a ftp dir
listing and
a raw html file:
$ wget --no-remove-listing -O ftp-index.txt ftp://127.0.0.1/test/
$ wget --no-remove-listing -O index.html http://127.0.0.1/test/
The relevant parts of the files above (first one is ftp
listing, second
part is the html file, both copied to test_regex.txt) are:
2011 Jan 28 21:25 File a
href=ftp://127.0.0.1/bar-4.5.6.i686.dbg.tgz;bar-4.5.6.i686.d
bg.tgz/a
(5551274 bytes)
2011 Jan 28 21:25 File a
href=ftp://127.0.0.1/bar-4.5.6.i686.tgz;bar-4.5.6.i686.tgz/a
(5551274 bytes)
2011 Jan 28 21:25 File a
href=ftp://127.0.0.1/bar-4.5.6.x86_64.dbg.tgz;bar-4.5.6.x86_
64.dbg.tgz/a
(5551274 bytes)
2011 Jan 28 21:25 File a
href=ftp://127.0.0.1/bar-4.5.6.x86_64.tgz;bar-4.5.6.x86_64.tgz/a
(5551274 bytes)
trtda
href=foo-bar-1.2.3+1.2.3.tar.gzfoo-bar-1.2.3+1.2.3.tar.gz/td/tr
This is what I now have (improvements most welcome):
$ egrep -o
([A-Za-z_-]+)([[:digit:]]{1,3}(\.[[:digit:]]{1,3})*).+(.|t)gz
./test_regex.txt | grep -v .dbg | tr -d ''
Output:
foo-bar-1.2.3+1.2.3.tar.gz
baz-4.5.6.i686.tgz
baz-4.5.6.x86_64.tgz
So far so good but now I also want to get the version numbers which I
can't figure out. Anyone have a pointer how to get the version number
from these filenames (1.2.3+1.2.3 and 4.5.6)?
Thanks!
Patrick
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Re: [CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down)
2011/3/7 Alexander Dalloz ad+li...@uni-x.org: Am 07.03.2011 08:46, schrieb Frank Cox: Roland's screencopy shows a java process rather than openswan. indeed, could it be http://www.iss.net/threats/414.html DoS? I would not expect that this is happening in the kernel, though... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Load balancing...
On Mon, Mar 7, 2011 at 1:36 AM, David Brian Chait dch...@invenda.com wrote: On Mon, Mar 7, 2011 at 4:40 AM, Tim Dunphy bluethu...@gmail.com wrote: however for my purpose open and free HAProxy remains best choice!! +1 for HAProxy; excellent piece of software. It really depends on your needs, if you are building a production ops environment then the last thing that you would want would be an unsupported/home grown solution. You need to consider the potential risks involved in implementing a poorly understood / virtually unsupported solution that in all likelihood only you would understand vs. a standard solution with an SLA behind it and an upgrade path going forward. Or in implementing an expensive, single point of failure third party device that requires a centralized control infrastructure. It can turn out to be a *very* expensive single point of failure, easily screwed up by a single upgrade or a single power supply issues or a failure to do failover networking to that device properly. Round-robin DNS is also, unfortunately, often mishandled. People mistake changing the ordering of listed A records for round-robin and, to quote Wikipedia: There is no standard procedure for deciding which address will be used by the requesting application. No such procedure. Zip, zero, nada, it's all client dependent. And if one of the IP's is on the same VLAN as the requesting host, you're *especially* likely to get all the traffic locked to that host, and DNS caches when you disable an IP can take rather unpredictable amounts of time to expire because every smart aleck downstream is doing their own caching and passing it along. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Sat, 5 Mar 2011, Nico Kadel-Garcia wrote: On Fri, Mar 4, 2011 at 7:57 AM, John Hodrien j.h.hodr...@leeds.ac.uk wrote: On Fri, 4 Mar 2011, Nico Kadel-Garcia wrote: Contemporary versions of git, subversion, and OpenSSH built-in. I'm particularly looking forward to the built-in chroot capabilities and GSSAPI support in OpenSSH, and the major release improvements to git and subversion. What does the new GSSAPI support do for you? Single sign-on. Your Windows clients, in the right environment, can have their Kerberos tickets managed to allow Kerberos tickets, not authorized_keys, to be used very effectively and reduce typing !@#$!@#$ passwords or manipulating SSH keys. The development version of Putty also has this built right in, though it's not made it to the production version yet. But that works just nicely with CentOS 5. I use GSSAPI together with kerberos tickets plucked out of Active Directory. Enable GSSAPIDelegateCredentials and it'll throw your ticket to the remote side, so you can merrily use your kerberos ticket there too. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
On Sun, Mar 6, 2011 at 10:07 PM, Charles Polisher cpol...@surewest.net wrote: https://secure.wikimedia.org/wikipedia/en/wiki/Fakeraid#Firmware.2Fdriver-based_RAID covers fake RAID. Ouch. That was *precisely* why I used the 2410, not the 1420, SATA card, some years back. It was nominally more expensive but well worth the reliability and support, which was very good for RHEL and CentOS. I hadn't been thinking about that HostRaid messiness because I read the reviews and avoided it early. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, Mar 7, 2011 at 6:53 AM, John Hodrien j.h.hodr...@leeds.ac.uk wrote: On Sat, 5 Mar 2011, Nico Kadel-Garcia wrote: On Fri, Mar 4, 2011 at 7:57 AM, John Hodrien j.h.hodr...@leeds.ac.uk wrote: On Fri, 4 Mar 2011, Nico Kadel-Garcia wrote: Contemporary versions of git, subversion, and OpenSSH built-in. I'm particularly looking forward to the built-in chroot capabilities and GSSAPI support in OpenSSH, and the major release improvements to git and subversion. What does the new GSSAPI support do for you? Single sign-on. Your Windows clients, in the right environment, can have their Kerberos tickets managed to allow Kerberos tickets, not authorized_keys, to be used very effectively and reduce typing !@#$!@#$ passwords or manipulating SSH keys. The development version of Putty also has this built right in, though it's not made it to the production version yet. But that works just nicely with CentOS 5. I use GSSAPI together with kerberos tickets plucked out of Active Directory. Enable GSSAPIDelegateCredentials and it'll throw your ticket to the remote side, so you can merrily use your kerberos ticket there too. Have you backported OpenSSH 5.x to CentOS 5? Because I don't see the full features set without OpenSSH 5.x, such as GSSApiKeyExchange. Hmm. What you've described is an ssh_config option, which is set to no by default. I'll have to look into that. There have been some interesting. traction issues with using the backported OpenSSH 5.x I'm currently reliant on for CentOS 5 and RHEL 5. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] connection speeds between nodes
Hi :) On Mon, Mar 7, 2011 at 12:12 PM, wessel van der aart wes...@postoffice.nl wrote: Hi All, I've been asked to setup a 3d renderfarm at our office , at the start it will contain about 8 nodes but it should be build at growth. now the setup i had in mind is as following: All the data is already stored on a StorNext SAN filesystem (quantum ) this should be mounted on a centos server trough fiber optics , which in its turn shares the FS over NFS to all the rendernodes (also centos). From what I can read, you have 1 NFS server only and a separate StoreNext MDC. Is this correct? Now we've estimated that the average file send to each node will be about 90MB , so that's what i like the average connection to be, i know that gigabit ethernet should be able to that (testing with iperf confirms that) but testing the speed to already existing nfs shares gives me a 55MB max. as i'm not familiar with network shares performance tweaking is was wondering if anybody here did and could give me some info on this? Also i thought on giving all the nodes 2x1Gb-eth ports and putting those in a BOND, will do this any good or do i have to take a look a the nfs server side first? Things to check would be: - Hardware: * RAM and cores on the NFS server * # of GigE FC ports * PCI technology you're using: PCIe, PCI-X, ... * PCI lanes bandwidth you're using up * if you are sharing PCI buses between different PCI boards (FC and GigE): you should NEVER do this. If you have to share a PCI bus, share it between two PCI devices which are the same. That is you can share a PCI bus between 2 GigE cards or between 2 FC cards, but never mix the devices. * cabling * switch configuration * RAID configuration * cache configuration on the RAID controller. Cache mirroring gives you more protection, but less performance. - software: * check the NFS config. There are some interesting tips if you google around. HTH Rafa ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, 7 Mar 2011, Nico Kadel-Garcia wrote: Have you backported OpenSSH 5.x to CentOS 5? Because I don't see the full features set without OpenSSH 5.x, such as GSSApiKeyExchange. Nope, I like the simple life. Hmm. What you've described is an ssh_config option, which is set to no by default. I'll have to look into that. There have been some interesting. traction issues with using the backported OpenSSH 5.x I'm currently reliant on for CentOS 5 and RHEL 5. I'm stock 5.5: openssh-server-4.3p2-41.el5_5.1 openssh-4.3p2-41.el5_5.1 openssh-clients-4.3p2-41.el5_5.1 Server needs: GSSAPIAuthentication yes GSSAPICleanupCredentials yes Most probably you also want: AllowGroups blah Client needs: GSSAPIAuthentication yes If you want key forwarding, you also need: GSSAPIDelegateCredentials yes Works like a charm, and GSSAPI auth works with putty, delegation doesn't seem to. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Octet
On 06/03/2011 13:44, Always Learning wrote: I also saw Honeywell upgrading a L66 machine so it would run faster. The engineer pulled-out a PCB and took it away. That 'upgrade' cost over 1 million NLG (Dutch guilders). Very annoying those big iron companies. We had two banks of ICL Eagle drives (10GB in five full height filing cabinet sized boxes). We upgraded to Albatrosses (20GB) for a mill or so (don't know the actual price). All the engineer did was swap a couple of jumpers and told us to reformat in M2FM instead of MFM. Definitely worth the money. The other one, much later was a 3 x 1GB upgrade for a GA mini. £3k we were quoted when we could buy the drives for about £250 each. The supplier said 'fine but we're still charging £3k for the authorisation code' Now the nearest to specialised hardware we use are Dell servers so we can't be held hostage. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Migrating standalone systems to xen guests
On Fri, Mar 4, 2011 at 4:57 AM, Simon Mattersimon.mat...@invoca.ch wrote: On Fri, Mar 04, 2011 at 10:31:18AM +0200, Jussi Hirvi wrote: Is there any (easy?) way to migrate running standalone CentOS 4 or 5 systems to xen virtual stacks? I playes with VMware ages ago and it was the only solution at the time which could boot an existing installed drive. My home installation was in a drive caddy and I could stick it in the server in the office and boot it in VMware quite happily. Magic! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, Mar 7, 2011 at 7:14 AM, John Hodrien j.h.hodr...@leeds.ac.uk wrote: On Mon, 7 Mar 2011, Nico Kadel-Garcia wrote: Have you backported OpenSSH 5.x to CentOS 5? Because I don't see the full features set without OpenSSH 5.x, such as GSSApiKeyExchange. Nope, I like the simple life. Hmm. What you've described is an ssh_config option, which is set to no by default. I'll have to look into that. There have been some interesting. traction issues with using the backported OpenSSH 5.x I'm currently reliant on for CentOS 5 and RHEL 5. I'm stock 5.5: openssh-server-4.3p2-41.el5_5.1 openssh-4.3p2-41.el5_5.1 openssh-clients-4.3p2-41.el5_5.1 Server needs: GSSAPIAuthentication yes GSSAPICleanupCredentials yes Most probably you also want: AllowGroups blah Client needs: GSSAPIAuthentication yes If you want key forwarding, you also need: GSSAPIDelegateCredentials yes Works like a charm, and GSSAPI auth works with putty, delegation doesn't seem to. If this works, you've just solved a *BIG* problem for me: I'd been handed (ordered before I arrived on the site) the issues of getting Centrify OpenSSH to play nicely, and this avoids the OpenSSH 5.x does not read .bashrc and read user aliases for remote ssh commands problem I've been facing, while preserving the effective GSSAPI credentials handling. *Good* admin. And are you coming to the Boston are, so I can buy you a decent local beer? (I'm not in London anymore.) Why aren't you over on the comp.security.ssh? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, 7 Mar 2011, Nico Kadel-Garcia wrote: If this works, you've just solved a *BIG* problem for me: I'd been handed (ordered before I arrived on the site) the issues of getting Centrify OpenSSH to play nicely, and this avoids the OpenSSH 5.x does not read .bashrc and read user aliases for remote ssh commands problem I've been facing, while preserving the effective GSSAPI credentials handling. Tested this with regular MIT kerberos under CentOS some time ago, but am actually running it against Active Directory currently. *Good* admin. And are you coming to the Boston are, so I can buy you a decent local beer? (I'm not in London anymore.) Why aren't you over on the comp.security.ssh? Too many groups, too little time. Tell you what, solve all the niggly little problems I've had with kerberised NFSv4 with CentOS5, and we'll call it quits. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Octet
On 06/03/2011 13:44, Always Learning wrote: I also saw Honeywell upgrading a L66 machine so it would run faster. The engineer pulled-out a PCB and took it away. That 'upgrade' cost over 1 million NLG (Dutch guilders). Very annoying those big iron companies. We had two banks of ICL Eagle drives (10GB in five full height filing cabinet sized boxes). We upgraded to Albatrosses (20GB) for a mill or so (don't know the actual price). All the engineer did was swap a couple of jumpers and told us to reformat in M2FM instead of MFM. Definitely worth the money. In case of NC machines it was quite common that the amount of memory usable was just a configuration setting. After you paid a horrible amount of money a service engineer came, entered a special code, reconfigured the amount of memory and that was it. With a modem connection it could even be done remotely :) Simon ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, Mar 7, 2011 at 7:56 AM, John Hodrien j.h.hodr...@leeds.ac.uk wrote: On Mon, 7 Mar 2011, Nico Kadel-Garcia wrote: If this works, you've just solved a *BIG* problem for me: I'd been handed (ordered before I arrived on the site) the issues of getting Centrify OpenSSH to play nicely, and this avoids the OpenSSH 5.x does not read .bashrc and read user aliases for remote ssh commands problem I've been facing, while preserving the effective GSSAPI credentials handling. Tested this with regular MIT kerberos under CentOS some time ago, but am actually running it against Active Directory currently. *Good* admin. And are you coming to the Boston are, so I can buy you a decent local beer? (I'm not in London anymore.) Why aren't you over on the comp.security.ssh? Too many groups, too little time. Tell you what, solve all the niggly little problems I've had with kerberised NFSv4 with CentOS5, and we'll call it quits. Ahh, I'll just trade you this fine lease on swampland in Florida for your first born, shall I? NFSv4 is *NOT* your friend, and Kerberizing it effectively is not trivial. I'm using Centrify for that and to have a reliable upstream vendor who can actually support it. (I'm on a contract.) What's the issue you're encountering, besides the lack of nfs4-acl-editor in the RPM's. nfs4-acl-editor is actually built into the nfs4 tools source tree, it's just not compiled. It's not a perfect tool, but I think well worth getting into the extras repository for CentOS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: grep regex pointer appreciated
On 03/07/2011 12:23 PM, Robert Grasso wrote: Hello, On my opinion, grep is not powerful enough in order to achieve what you want. It would be preferable to use at least some (old but powerful) tools such sed, awk, or even better : perl. Actually, what you need is a tool providing a capture buffer (this is perl jargon - back references in sed jargon) in which you can get the string you want to extract, rather than trying to build up a positive matching regex, as the string boundaries seem to be easy enough to describe with regexs. Thank you for your advice. After much fiddling I came up with something that seems to work. I have never dabbled with perl but will dig up my sed/awk book and see if there's a more elegant way to do this. Regards, Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, 7 Mar 2011, Nico Kadel-Garcia wrote: NFSv4 is *NOT* your friend, and Kerberizing it effectively is not trivial. I'm using Centrify for that and to have a reliable upstream vendor who can actually support it. (I'm on a contract.) What's the issue you're encountering, besides the lack of nfs4-acl-editor in the RPM's. With a CentOS 5 server and a CentOS 5 client, I've yet to manage to get it play nicely for long periods without deciding that I'm evil. Sometimes it works fine, then a reboot or a minor tinker that I'm sure shouldn't affect anything will leave it refusing to mount with Operation not permitted. Or it'll let me mount it as root, but as soon as I use it with a kerberos ticket will have a big long pause before deciding it doesn't like me. Client works fine against an EMC box, and I've had the server working before I started using Active Directory. nfs4-acl-editor is actually built into the nfs4 tools source tree, it's just not compiled. It's not a perfect tool, but I think well worth getting into the extras repository for CentOS. nfs4-acl-tools-0.3.3-1.el5, standard in CentOS. That not do what you need? jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] connection speeds between nodes
On Mar 7, 2011, at 6:12 AM, wessel van der aart wes...@postoffice.nl wrote: Hi All, I've been asked to setup a 3d renderfarm at our office , at the start it will contain about 8 nodes but it should be build at growth. now the setup i had in mind is as following: All the data is already stored on a StorNext SAN filesystem (quantum ) this should be mounted on a centos server trough fiber optics , which in its turn shares the FS over NFS to all the rendernodes (also centos). Now we've estimated that the average file send to each node will be about 90MB , so that's what i like the average connection to be, i know that gigabit ethernet should be able to that (testing with iperf confirms that) but testing the speed to already existing nfs shares gives me a 55MB max. as i'm not familiar with network shares performance tweaking is was wondering if anybody here did and could give me some info on this? Also i thought on giving all the nodes 2x1Gb-eth ports and putting those in a BOND, will do this any good or do i have to take a look a the nfs server side first? 1Gbe can do 115MB/s @ 64K+ IO size, but at 4k IO size (NFS) 55MB/s is about it. If you need each node to be able to read 90-100MB/s you would need to setup a cluster file system using iSCSI or FC and make sure the cluster file system can handle large block/cluster sizes like 64K or the application can handle large IOs and the scheduler does a good job of coalescing these (VFS layer breaks it into 4k chunks) into large IOs. It's the latency of each small IO that is killing you. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] yum tries to install a mix of architectures
Hello, On my centos boxes whenever I try to install packages I get a mix of packages from the repos that are both i386 and x86_64 in archictecture: === Package Arch Version RepositorySize === Installing: boost-devel i386 1.33.1-10.el5 base 4.3 M boost-devel x86_64 1.33.1-10.el5 base 4.4 M Installing for dependencies: boost i386 1.33.1-10.el5 base 863 k boost x86_64 1.33.1-10.el5 base 861 k libicu i386 3.6-5.11.4 base 5.2 M libicu x86_64 3.6-5.11.4 base 5.2 M Transaction Summary === Install 6 Package(s) Upgrade 0 Package(s) Without having so specify the arch on each yum command how can I automatically prune my yum repo files so that it will only grab packages that relate to the architecture I'm running? Thanks in advance! -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] connection speeds between nodes
On Mon, 7 Mar 2011, Ross Walker wrote: 1Gbe can do 115MB/s @ 64K+ IO size, but at 4k IO size (NFS) 55MB/s is about it. If you need each node to be able to read 90-100MB/s you would need to setup a cluster file system using iSCSI or FC and make sure the cluster file system can handle large block/cluster sizes like 64K or the application can handle large IOs and the scheduler does a good job of coalescing these (VFS layer breaks it into 4k chunks) into large IOs. It's the latency of each small IO that is killing you. I'm not necessarily convinced it's quite that bad (here's some default NFSv3 mounts under CentOS 5.5, with Jumbo frames, rsize=32768,wsize=32768). $ sync;time (dd if=/dev/zero of=testfile bs=1M count=1;sync) [I verified that it'd finished when it thought it had] 1048576 bytes (10 GB) copied, 133.06 seconds, 78.8 MB/s umount, mount (to clear any cache): $ dd if=testfile of=/dev/null bs=1M 1048576 bytes (10 GB) copied, 109.638 seconds, 95.6 MB/s This machine only has a double-bonded gig interface so with four clients all hammering at the same time, this gives: $ dd if=/scratch/testfile of=/dev/null bs=1M 1048576 bytes (10 GB) copied, 189.64 seconds, 55.3 MB/s So with four clients (on single gig) and one server with two gig interfaces you're getting an aggregate rate of 220Mbytes/sec. Sounds pretty reasonable to me! If you want safe writes (sync), *then* latency kills you. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Antwort: yum tries to install a mix of architectures
centos-boun...@centos.org schrieb am 07.03.2011 15:41:04: Tim Dunphy bluethu...@gmail.com Gesendet von: centos-boun...@centos.org 07.03.2011 15:41 Bitte antworten an CentOS mailing list centos@centos.org An CentOS mailing list centos@centos.org Kopie Thema [CentOS] yum tries to install a mix of architectures Hello, On my centos boxes whenever I try to install packages I get a mix of packages from the repos that are both i386 and x86_64 in archictecture: === Package Arch Version RepositorySize === Installing: boost-devel i386 1.33.1-10.el5 base 4.3 M boost-devel x86_64 1.33.1-10.el5 base 4.4 M Installing for dependencies: boost i386 1.33.1-10.el5 base 863 k boost x86_64 1.33.1-10.el5 base 861 k libicu i386 3.6-5.11.4 base 5.2 M libicu x86_64 3.6-5.11.4 base 5.2 M Transaction Summary === Install 6 Package(s) Upgrade 0 Package(s) Without having so specify the arch on each yum command how can I automatically prune my yum repo files so that it will only grab packages that relate to the architecture I'm running? Thanks in advance! -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi Tim Dunphy, that's a normal way when you're using x86_64. Do you need 32bit software? If not you can remove them with yum remove *386. Gruß Andreas Reschke Unix/Linux-Administration andreas.resc...@behrgroup.com___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] /etc/hosts - hostname alias for 127.0.0.1
Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1hostname.domain.com hostname localhost localhost.localdomain ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Thu, Mar 03, 2011 at 03:11:52PM +, Digimer wrote: How about the rest of you? What are you looking forward to in CentOS 6 when it is released? For me the big wins with CentOS 6 should be SSSD to simplify and centralise (on the machine) network authentication and (hopefully!) graphics drivers which work with our hardware out-of-the box. Laurence ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
Am 03/07/2011 05:34 PM, schrieb Sean Carolan: Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1hostname.domain.com hostname localhost localhost.localdomain First, if your host is actually communicating with any kind of ip-based network, it is quite certain, that 127.0.0.1 simply isn't his IP address. And, at least for me, that's a fairly good reason. Second, sendmail had the habit of breaking if your hostname was mapped to 127.0.0.1, but I stopped using sendmail a decade ago, so I can't verify this. :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
First, if your host is actually communicating with any kind of ip-based network, it is quite certain, that 127.0.0.1 simply isn't his IP address. And, at least for me, that's a fairly good reason. Indeed. It does seem like a bad idea to have a single host using loopback, while the rest of the network refers to it by it's real IP address. Second, sendmail had the habit of breaking if your hostname was mapped to 127.0.0.1, but I stopped using sendmail a decade ago, so I can't verify this. :) The reason this came up is because one of our end-users requested such a setup in the /etc/hosts file, and I didn't think it was a good idea. Seems it would be better to fix the application(s) that require the data to use the real network IP address. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
Am 03/07/2011 05:49 PM, schrieb Sean Carolan: First, if your host is actually communicating with any kind of ip-based network, it is quite certain, that 127.0.0.1 simply isn't his IP address. And, at least for me, that's a fairly good reason. Indeed. It does seem like a bad idea to have a single host using loopback, while the rest of the network refers to it by it's real IP address. Acknowledged. At least it will save you a lot of time next year, when you have forgotten about that and are wondering why every machine on the network can reach a service and only the host itself can't (or vice versa...). Second, sendmail had the habit of breaking if your hostname was mapped to 127.0.0.1, but I stopped using sendmail a decade ago, so I can't verify this. :) The reason this came up is because one of our end-users requested such a setup in the /etc/hosts file, and I didn't think it was a good idea. Seems it would be better to fix the application(s) that require the data to use the real network IP address. Most of the time it's a good idea to fix applications before ravishing your network setup to make it work. :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, 7 Mar 2011, Laurence Hurst wrote: On Thu, Mar 03, 2011 at 03:11:52PM +, Digimer wrote: How about the rest of you? What are you looking forward to in CentOS 6 when it is released? For me the big wins with CentOS 6 should be SSSD to simplify and centralise (on the machine) network authentication and (hopefully!) graphics drivers which work with our hardware out-of-the box. Yes, SSSD is of interest to me too. The last version I used was sufficiently less adept at matching winbind or nss_ldap in functionality that it wasn't all the good for use against Active Directory. I'm assuming nested group handling has improved somewhat since I last tried it with CentOS 5, which was the killer when I last tried. It certainly sounds like a massively improved model compared to nss_ldap, you'd hope for much better resilience and performance. I'm not sure I see graphics drivers as a big deal. Have your own local repo, add in a suitable package from elrepo, and install it at kickstart time. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down)
- Original Message - | Hello, | | Today my server stopped responding. | i went to the console and on the screen there were a continuous loop | of the following info shown on the screen: | | BUG: soft lockup - CPU#0 stuck for 10s! [java:13959] | | and alot of other information. | ii've took a screen shot of the info shown , you can find it under the | following url: http://img585.imageshack.us/i/img00012201103070833.jpg/ | and had to hard reset for it to be back up and running. | | i tried googling with no luck for direct relevant info. | so hoping you can help out | | Thanks, | | --Roland | | ___ | CentOS mailing list | CentOS@centos.org | http://lists.centos.org/mailman/listinfo/centos This is likely due to thread deadlock. What is the load on the machine at the time that this error occurs? I've seen this very error when running The Mathworks Distributed Computing Toolbox server. The machine would become very unsettled when it tried to run on more than four 2 CPUs. How many CPUs are in this system? -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpelt...@sfu.ca Website : http://www.sfu.ca/itservices http://blogs.sfu.ca/people/jpeltier ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] IPERF Server
When starting IPERF with iperf -s or iperf -sD it seems to stop after client runs its first test. I would like to leave it running for a few hours to give someone a chance to run a few tests. Is there a way to leave it active on the server and kill it manually later? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Enscript
Greetings.. Yes ENSCRIPT is a text to PostScript conversion service. As usual, am a bi confused on how to implement the fit-to-page functionality. Google resources say it is used then proceeds to dance around the issue Using the -ffontname@W/H option can one calculate the necessary dimensions for the print job consisting of over 200 pages? --Hal. -- Hal Davison Observe Goal, Set the course, Burn the map Davison Consulting This correspondence was composed using Dragon Speaking Version 10 Peg#: 2007011701 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] IPERF Server
centos-boun...@centos.org wrote: When starting IPERF with iperf -s or iperf -sD it seems to stop after client runs its first test. I would like to leave it running for a few hours to give someone a chance to run a few tests. Is there a way to leave it active on the server and kill it manually later? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos http://sourceforge.net/projects/iperf/ http://iperf.sourceforge.net/ This has its own mailinglist with archived messages here: http://archive.ncsa.illinois.edu/lists/iperf-users/ Google lists many hits on the keyword iperf. I'm not sure what you're doing that this should be on a CentOS list. Insert spiffy .sig here //me *** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.Hubbell.com - Hubbell Incorporated** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: grep regex pointer appreciated
On Mon, Mar 07, 2011, Robert Grasso wrote: Hello, On my opinion, grep is not powerful enough in order to achieve what you want. It would be preferable to use at least some (old but powerful) tools such sed, awk, or even better : perl. Actually, what you need is a tool providing a capture buffer (this is perl jargon - back references in sed jargon) in which you can get the string you want to extract, rather than trying to build up a positive matching regex, as the string boundaries seem to be easy enough to describe with regexs. One can use pcregrep which is grep that groks perl regular expressions. Bill -- INTERNET: b...@celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax:(206) 232-9186 Skype: jwccsllc (206) 855-5792 If the government can take a man's money without his consent, there is no limit to the additional tyranny it may practise upon him; for, with his money, it can hire soldiers to stand over him, keep him in subjection, plunder him at discretion, and kill him if he resists. Lysander Spooner, 1852 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Mon, 7 Mar 2011, Laurence Hurst wrote: On Thu, Mar 03, 2011 at 03:11:52PM +, Digimer wrote: How about the rest of you? What are you looking forward to in CentOS 6 when it is released? For me the big wins with CentOS 6 should be SSSD to simplify and centralise (on the machine) network authentication and (hopefully!) graphics drivers which work with our hardware out-of-the box. Yes, SSSD is of interest to me too. The last version I used was sufficiently less adept at matching winbind or nss_ldap in functionality that it wasn't all the good for use against Active Directory. I'm assuming nested group handling has improved somewhat since I last tried it with CentOS 5, which was the killer when I last tried. It certainly sounds like a massively improved model compared to nss_ldap, you'd hope for much better resilience and performance. I'm not sure I see graphics drivers as a big deal. Have your own local repo, add in a suitable package from elrepo, and install it at kickstart time. Graphics drivers can be a big deal. For some netbook hardware I really need Intel GMA3150 support but AFAIK that's a no go with EL5. I may be wrong but, has anyone got it to work? Simon ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
On 03/07/2011 09:00 AM, Nico Kadel-Garcia wrote: On Sun, Mar 6, 2011 at 10:07 PM, Charles Polishercpol...@surewest.net wrote: https://secure.wikimedia.org/wikipedia/en/wiki/Fakeraid#Firmware.2Fdriver-based_RAID covers fake RAID. Ouch. That was*precisely* why I used the 2410, not the 1420, SATA card, some years back. It was nominally more expensive but well worth the reliability and support, which was very good for RHEL and CentOS. I hadn't been thinking about that HostRaid messiness because I read the reviews and avoided it early. Here's the latest info which I'll share ... it's good news, thankfully. The problem with terrible performance on the LSI controller was traced to a flaky disk. It turns out that if you examine 'dmesg' carefully you'll find a mapping of the controller's PHY to the id X string (thanks to an IT friend for that tip). The LSI error messages have dropped from several thousand/day to maybe 4 or 5/day when stressed. Now the LSI controller is busy re-syncing the arrays with speed consistently over 100,000K/sec, which is excellent. My scepticism regarding SMART data continues ... the flaky drive showed no errors, and a full test and full zero-write using the WD diagnostics revealed no errors either. If the drive is bad, there's no evidence that would cause WD to issue an RMA. Regarding fake raid controllers, I use them in several small machines, but only as JBOD with software RAID. I haven't used Adaptec cards for many years, mostly because their SCSI controllers back in the early days were junk. Using RAID for protecting the root/boot drives requires one bit of extra work ... make sure you install grub in the boot sector of at least two drives so you can boot from an alternate if necessary. CentOS/SL/RHEL doesn't do that for you, it only puts grub in the boot sector of the first drive in an array. Chuck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
On 03/07/11 10:43 AM, Chuck Munro wrote: I haven't used Adaptec cards for many years, mostly because their SCSI controllers back in the early days were junk. I blame Adaptec for the dominance of IDE. Seriously. If Adaptec A) hadn't had the lionshare of the SCSI mindset in the PC business back in the 90s, and B) hadn't made so much overpriced buggy crap, we'd all be using SCSI today. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] what wrong about my ipv6 address
Hi I used the command ip -6 addr add 2001:DB8:CAFE:::12/64 dev eth0 to add ipv6 address and can see it in ifconfig but can't ping it Why? Thank you # ping6 2001:db8:cafe:::12 PING 2001:db8:cafe:::12(2001:db8:cafe:::12) 56 data bytes From ::1 icmp_seq=1 Destination unreachable: Address unreachable From ::1 icmp_seq=2 Destination unreachable: Address unreachable From ::1 icmp_seq=3 Destination unreachable: Address unreachable From ::1 icmp_seq=5 Destination unreachable: Address unreachable From ::1 icmp_seq=6 Destination unreachable: Address unreachable From ::1 icmp_seq=7 Destination unreachable: Address unreachable From ::1 icmp_seq=9 Destination unreachable: Address unreachable From ::1 icmp_seq=10 Destination unreachable: Address unreachable From ::1 icmp_seq=11 Destination unreachable: Address unreachable ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
On Mon, Mar 07, 2011 at 10:34:24AM -0600, Sean Carolan wrote: Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1hostname.domain.com hostname localhost localhost.localdomain Would the application work with a hosts entry like this? 127.0.0.1hostname.dummy localhost localhost.localdomain (Make sure you pick .dummy so as not to interfere with any other DNS.) In theory you could leave off .dummy, but then you risk hostname being completed with the search domain in resolv.conf, which creates the problems already mentioned with putting hostname.domain.com in /etc/hosts. (I have not tested this at all!) --keith -- kkel...@wombat.san-francisco.ca.us pgpSKskAyQoWJ.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
(Make sure you pick .dummy so as not to interfere with any other DNS.) In theory you could leave off .dummy, but then you risk hostname being completed with the search domain in resolv.conf, which creates the problems already mentioned with putting hostname.domain.com in /etc/hosts. (I have not tested this at all!) I will probably just leave this decision to the application architects, with the recommendation that we should simply use DNS as intended... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS and Marvell SAS/SATA drivers
My scepticism regarding SMART data continues ... the flaky drive showed no errors, and a full test and full zero-write using the WD diagnostics revealed no errors either. If the drive is bad, there's no evidence that would cause WD to issue an RMA. I've been having a rash of drive failures recently and I have come to trust SMART. One thing's for sure - SMART is not implemented the same on all drives or controllers. Recently one older Seagate drive showed no SMART capability in linux using the gnome-disk-utility, but I could read the SMART data from the drive in Windows with HD Tune. It isn't infallible, but SMART is certainly one tool you can use in the diagnosis. I wouldn't ignore Reallocated Sector counts or Current Pending Sector counts, for instance. Working for a customer this weekend, I replaced an older 60G WD drive that I knew for months to have bad sectors, but the Reallocated Sector Count was still 0. After a scan for errors with HD Tune, the Current Pending sector count showed 13, but the Reallocated Sector Count never grew. There is still a lot for me to learn - like the relationship between SMART within the drive and the controller's support of SMART. You would think they are independent of each other, but I wonder... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
Keith Keller wrote: On Mon, Mar 07, 2011 at 10:34:24AM -0600, Sean Carolan wrote: Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1hostname.domain.com hostname localhost localhost.localdomain Would the application work with a hosts entry like this? 127.0.0.1hostname.dummy localhost localhost.localdomain (Make sure you pick .dummy so as not to interfere with any other DNS.) In theory you could leave off .dummy, but then you risk hostname being completed with the search domain in resolv.conf, which creates the problems already mentioned with putting hostname.domain.com in /etc/hosts. (I have not tested this at all!) And giving it 127.0.0.1 would tell it others to ignore it, I think. Where did your user come up with this idea - clearly, they have *no* clue what they're doing, and need at least a brown bag lunch about TCP/IP, and they should not be allowed to dictate this. Their idea is a bug, and needs to be fixed. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
Sean Carolan wrote: (Make sure you pick .dummy so as not to interfere with any other DNS.) In theory you could leave off .dummy, but then you risk hostname being completed with the search domain in resolv.conf, which creates the problems already mentioned with putting hostname.domain.com in /etc/hosts. (I have not tested this at all!) I will probably just leave this decision to the application architects, with the recommendation that we should simply use DNS as intended... I wonder if what they need is another IP being asserted on your NIC mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
Sean Carolan wrote on Mon, 7 Mar 2011 10:49:18 -0600: Indeed. It does seem like a bad idea to have a single host using loopback, while the rest of the network refers to it by it's real IP address. It doesn't matter for the other hosts, the sender ip address will always be the outgoing interface address and not the loopback. It only matters if you connect on the local host and have to troubleshoot a connectivity issue and confuse something ... Usually, it's rather an advantage because in cases where you would just get localhost you now get some meaningful name. It really depends. However, I have it set this way on all my hosts for ten years or more and haven't found a single case where this was a problem. Kai ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Dell PERC H800 commandline RAID monitoring tools
We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. Thanks in advance. -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 6 - What are you looking forward to?
On Fri, Mar 4, 2011 at 12:11 PM, John R Pierce pie...@hogranch.com wrote: On 03/04/11 11:59 AM, m.r...@5-cent.us wrote: I'm looking forward to the new cgroups and KVM. This will give it some capabilities similar to AIX virtual partitions which can divvy up CPUs at a fine resolution. Really? So IBM ported VM into native AIX? I missed that. IBM Power servers since the Power4+ CPU (they are up to Power7 now) have hardware partitioning support, commonly known as LPAR. LPAR can be divided in units of 1/10th of a CPU. The software to manage this is now called PowerVM (its been called other names in the past, not all polite). In addition, AIX 6.1 and newer have Workload Partitions (WPAR), which are similar to Solaris Zones, these allow subdividing an AIX install into an arbitrary number of apparently different systems that all share the same kernel. LPAR plus VIOS (Virtual IO System, actually a stripped down preconfigured AIX system) corresponds to the Xen model, however the base hypervisor capability is built right into the CPU and IO hardware, VIOS just provides management and optional virtualized IO. You can assign IO adapters directly to partitions, whereupon the partitions (VMs) run even if VIOS is shut down. The newer Power6 and 7 servers have Ethernet adapters that provide each LPAR with its own hardware-virtualized ethernet adapter so you don't need a cage full of cards, or run all the networking through VIOS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos This is why I'm not totally impressed with virtualization today, but I've used it ions ago in enterprise solutions. =) There's a reason why IBM solutions are so expensive sides the amount of people they staff on projects. You also get technology that the industry never new existed. -- James H. Nguyen CallFire :: Systems Architect http://www.callfire.com 1.949.625.4263 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. if your system supports omreport (comes with omsa) then this is good solution: http://folk.uio.no/trondham/software/check_openmanage.html -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. if your system supports omreport (comes with omsa) then this is good solution: http://folk.uio.no/trondham/software/check_openmanage.html So ... this slots on top of OMSA to provide reporting? -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. if your system supports omreport (comes with omsa) then this is good solution: http://folk.uio.no/trondham/software/check_openmanage.html So ... this slots on top of OMSA to provide reporting? this plugin parsers omreport output and uses it for nagios output. omsa webserver is not required, but working omreport cli is. .. works great on my servers. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
Original Message Subject: [CentOS] Dell PERC H800 commandline RAID monitoring tools From: Dr. Ed Morbius dredmorb...@gmail.com To: CentOS User list centos@centos.org Date: Monday, March 07, 2011 2:43:03 PM We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. If you purchased the server with an add-in DRAC, the DRAC can provide email alerts if an array becomes degraded (or just about any other hardware fault). This isn't necessarily a replacement for your current monitoring, but it can be used to supplement or compliment it. --Blake ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
on 16:04 Mon 07 Mar, Blake Hudson (bl...@ispn.net) wrote: Original Message Subject: [CentOS] Dell PERC H800 commandline RAID monitoring tools From: Dr. Ed Morbius dredmorb...@gmail.com To: CentOS User list centos@centos.org Date: Monday, March 07, 2011 2:43:03 PM We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. If you purchased the server with an add-in DRAC, the DRAC can provide email alerts if an array becomes degraded (or just about any other hardware fault). This isn't necessarily a replacement for your current monitoring, but it can be used to supplement or compliment it. The iDRAC /doesn't/ report on RAID / storage configuration or status. iDRAC 6, Dell r610, onboard PERC H700, offboard PERC H800 (MD1200 array). BIOS version 2.1.15, Firmware 1.54 (Build 15). We get batteries, fans, intrusion, power, removable flash media, temps, and volts, but not storage.o The iDRAC is pretty good compared with some past Dell offerings. Ability to boot virtual media in particular is very slick (I can specify local removable storage or a drive image and mount it for booting / diagnostics remotely). But no RAID / storage management or monitoring. -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
on 12:43 Mon 07 Mar, Dr. Ed Morbius (dredmorb...@gmail.com) wrote: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. Pardoning the self-reply, but one issue we've ahd is reconciling the omcontrol log report with the Dell Server Manager syslog messages. omcontrol reported a predictive drive failure, but we (and three Dell storage/support techs) had trouble identifying which actual device was being reporrted as bad. From 'omconfig storage controller action=exportlog controller=0' output: 03/04/11 21:42:42: EVT#02959-03/04/11 21:42:42: 96=Predictive failure: PD 00(e0x08/s2) 03/05/11 14:28:41: EVT#02961-03/05/11 14:28:41: 112=Removed: PD 00(e0x08/s2) In /var/log/messages (timestamp/hostname trimmed): Server Administrator: Storage Service EventID: 2243 The Patrol Read has stopped.: Controller 0 (PERC H800 Adapter) Server Administrator: Storage Service EventID: 2049 Physical disk removed: Physical Disk 0:0:2 Controller 0, Connector 0 The Server Administrator reports of a slot 2 failure correspond to the drive which was physically replaced. The OMSA omconfig report is throwing us a bunch of crud about some device, but Dell variously identified it as slot 0 and slot 9. We're now getting from them that /s2 identifies slot 2. Dell said point blank you're not going to have any luck with that as far as documentation of the OMSA log report format and parsing being documented. Does anyone have a clue as to WTF it's actaully trying to say, or what this tool is based off of (I'm suspecting mega-cli on a general hunch but not much stronger). Enterprise support indeed. -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
on 23:15 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. if your system supports omreport (comes with omsa) then this is good solution: http://folk.uio.no/trondham/software/check_openmanage.html So ... this slots on top of OMSA to provide reporting? this plugin parsers omreport output and uses it for nagios output. Is it running/invoking omreport or relying on periodic runs? I'll dig through the docs but if you know this off-hand it'd be helpful. omsa webserver is not required, but working omreport cli is. .. works great on my servers. Good to know, much appreciated. -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools
2011/3/8 Dr. Ed Morbius dredmorb...@gmail.com: on 23:15 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote: 2011/3/7 Dr. Ed Morbius dredmorb...@gmail.com: We're looking for tools to be used in monitoring the PERC H800 arrays on a set of database servers running CentOS 5.5. We've installed most of the OMSA (Dell monitoring) suite. Our current alerting is happening through SNMP, though it's a bit hit or miss (we apparently missed a couple of earlier predictive failure alerts on one drive). OMSA conflicts with mega-cli, though we may find that the latter is the more useful package. Both are pretty byzantine, the Dell stuff simply doesn't have docs (in particular: docs on how to interpret the omconfig log output). Ideally we'd like something which could be run as a Nagios plugin or cron job providing information on RAID status and/or possible disk errors. Probably both, actually. if your system supports omreport (comes with omsa) then this is good solution: http://folk.uio.no/trondham/software/check_openmanage.html So ... this slots on top of OMSA to provide reporting? this plugin parsers omreport output and uses it for nagios output. Is it running/invoking omreport or relying on periodic runs? I'll dig through the docs but if you know this off-hand it'd be helpful. It runs omreport each time nagios polls it via nrpe or snmp. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] email to web posting software?
Dear CentOS, I have a user group that would like to be able to routinely post (easily) emails to a web site. Must be usable without special training. I have no experience with this. Anyone have a suggestion? LAMP stack installed. Dave -- When a respected information source covers something where you have on-the- ground experience, the result is often to make you wonder how much fecal matter you've swallowed in areas outside your own expertise. -- Rusty Russell ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] email to web posting software?
on 14:41 Mon 07 Mar, Dave Stevens (g...@uniserve.com) wrote: Dear CentOS, I have a user group that would like to be able to routinely post (easily) emails to a web site. Must be usable without special training. I have no experience with this. Anyone have a suggestion? LAMP stack installed. https://posterous.com/ -- Dr. Ed Morbius, Chief Scientist /| Robot Wrangler / Staff Psychologist| When you seek unlimited power Krell Power Systems Unlimited| Go to Krell! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] email to web posting software?
On 03/07/11 2:41 PM, Dave Stevens wrote: Dear CentOS, I have a user group that would like to be able to routinely post (easily) emails to a web site. Must be usable without special training. I have no experience with this. Anyone have a suggestion? LAMP stack installed. you mean, like a web archive of the mails sent to a specific address? you might look at hypermail. this is a hypermail archive of the current month of a discussion list. http://observers.org/tac.mailing.list/2011/Mar/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] email to web posting software?
On Mon, 07 Mar 2011 14:41:03 -0800 Dave Stevens wrote: I have a user group that would like to be able to routinely post (easily) emails to a web site. Must be usable without special training. I have no experience with this. Anyone have a suggestion? LAMP stack installed. I did this a while back (and will probably be doing it again on another project shortly). I just wrote a little program that reads whatever is sent to its email address. It checks for a password in the subject line and then formats and embeds the email content on a webpage. While it's not the most secure way of doing things, it's the most painless way I can think of to provide (very) non-technical users with a method to post the local swim meet schedule or whatever. Some of the users who need to be able to update these kinds of web pages don't have their own computers or anything, so this way all they need is access to any webmail service and they can still do it from anywhere. The program is as it exists right now is pretty special-purpose as it has the webpage template and passwords built-in so it's not of much general interest at the moment. Perhaps re-implementing it for this new project is a good reason to break some of that stuff out into config files instead. I also just woke up to the fact that I could simplify it a lot by using procmail to feed the email to it and crank up the program. At the moment I read the mail spool directly and invoke the program with cron, which isn't the best way to do it. -- MELVILLE THEATRE ~ Melville Sask ~ www.melvilletheatre.com www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
On Mon, Mar 07, 2011 at 09:31:17PM +0100, Kai Schaetzl wrote: Usually, it's rather an advantage because in cases where you would just get localhost you now get some meaningful name. You can use the bare hostname as an alias in /etc/hosts, which is probably marginally better than using the FQDN. In CentOS, I believe that rc.sysinit will try to set the hostname from its FQDN (or whatever you have set in /etc/sysconfig/network) without mucking about with /etc/hosts. --keith -- kkel...@wombat.san-francisco.ca.us pgplTIQhXvU5s.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] email to web posting software?
On Monday, March 07, 2011 02:41:03 pm Dave Stevens wrote: Dear CentOS, I have a user group that would like to be able to routinely post (easily) emails to a web site. Must be usable without special training. I have no experience with this. Anyone have a suggestion? LAMP stack installed. Dave Thanks. I'll need to sort through this a bit. Frank if you do generalize your work so others can use it will you let us know please? dave -- When a respected information source covers something where you have on-the- ground experience, the result is often to make you wonder how much fecal matter you've swallowed in areas outside your own expertise. -- Rusty Russell ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
On Monday 07 March 2011 15:22, the following was written: Keith Keller wrote: On Mon, Mar 07, 2011 at 10:34:24AM -0600, Sean Carolan wrote: Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1hostname.domain.com hostname localhost localhost.localdomain You can do this if you want. The host file is only used by the machine it is on. As to bad Idea it would depend on what you are trying to do and if the process you are trying to reach locally is listening on that ip address. I have only the short name configured on 127.0.0.1 Would the application work with a hosts entry like this? If the process what configured to listen on that interface, yes. 127.0.0.1hostname.dummy localhost localhost.localdomain (Make sure you pick .dummy so as not to interfere with any other DNS.) Why do you need the '.dummy'? short name should work fine. In theory you could leave off .dummy, but then you risk hostname being completed with the search domain in resolv.conf, which creates the problems already mentioned with putting hostname.domain.com in /etc/hosts. (I have not tested this at all!) Resolv.conf is not used for the hosts file, it is used for DNS. I have my short name configured to the lo interface and the FQDN to the real ip address. If I ping the short name I get this: etc $ ping -c 3 bms PING bms (127.0.0.1) 56(84) bytes of data. 64 bytes from bms (127.0.0.1): icmp_seq=1 ttl=64 time=0.038 ms 64 bytes from bms (127.0.0.1): icmp_seq=2 ttl=64 time=0.038 ms 64 bytes from bms (127.0.0.1): icmp_seq=3 ttl=64 time=0.037 ms If I ping the FQDN I get this: etc $ ping -c 3 bms.domain.com PING bms.domain.com (x.x.x.x) 56(84) bytes of data. 64 bytes from bms.domain.com (x.x.x.x): icmp_seq=1 ttl=64 time=0.037 ms 64 bytes from bms.domain.com (x.x.x.x): icmp_seq=2 ttl=64 time=0.038 ms 64 bytes from bms.domain.com (x.x.x.x): icmp_seq=3 ttl=64 time=0.093 ms And giving it 127.0.0.1 would tell it others to ignore it, I think. Where did your user come up with this idea - clearly, they have *no* clue what they're doing, and need at least a brown bag lunch about TCP/IP, and they should not be allowed to dictate this. Their idea is a bug, and needs to be fixed. How do you figure this? The hosts file is ONLY used locally. If someone is looking you up they are using DNS if they don't have you configured in their hosts file. Their idea might be flaws but it is not bugs. -- Regards Robert Linux The adventure of a lifetime. Linux User #296285 Get Counted http://counter.li.org/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
On Mon, Mar 7, 2011 at 11:34 AM, Sean Carolan scaro...@gmail.com wrote: Can anyone point out reasons why it might be a bad idea to put this sort of line in your /etc/hosts file, eg, pointing the FQDN at the loopback address? 127.0.0.1 hostname.domain.com hostname localhost localhost.localdomain ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos It's common to do so, so that the network lookups for hostname still operate, even if the rest of the network is dead. This is particularly important for self-monitoring, sendmail (which relies on the FQHN beinf first, mind you!!!) and X Windows. If you have an intermittent network connection, such as one for a DSL connected device or a roving wireless connection, keeping the hostname in the 127.0.0.1 line helps assure that the X sessions work, even when other connections are interrupted. It also helps improve performance for local network access and keeps your external ports uncluttered by local CIFS and NFS access. That said, it can be problematic when you ping $HOSTNAME and get a valid 127.0.0.1 response, and haven't actually tested your external port. It also requires thought for configuring SSH and SNMP and NFS to allow localhost access. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum tries to install a mix of architectures
On Mon, Mar 7, 2011 at 9:41 AM, Tim Dunphy bluethu...@gmail.com wrote: Hello, On my centos boxes whenever I try to install packages I get a mix of packages from the repos that are both i386 and x86_64 in archictecture: Jump to CentOS 6. Wait, that's not out yet. Buy an RHEL 6 license or test with Scientic Linux 6 until CentOS 6 is out. The default behavior of yum has changed, and it's just safier and easier to work with an architecture that does the more selective thing by deffault. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] keepalived+LVS
hello, all! if i want to use lvs function of keepalived , i must install ipvsadm ? tks! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] keepalived+LVS
hello, all! if i want to use lvs function of keepalived , i must install ipvsadm ? tks! I haven't used keepalived with lvs in ages, but I believe it works directly with the kernel, and therefore does not strictly require ipvsadm. Please note that ipvsadm is a userspace tool for manipulating/querying ipvs entries and is very useful. I've never used lvs on any machine where I didn't also install ipvsadm. Hope this helps, Barry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] keepalived+LVS
all! if i want to use lvs function of keepalived , i must install ipvsadm ? tks! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos [steve@mail ~]$ yum provides '*/ipvsadm' Loaded plugins: fastestmirror addons | 951 B 00:00 base | 2.1 kB 00:00 extras | 2.1 kB 00:00 updates | 1.9 kB 00:00 ipvsadm-1.24-10.x86_64 : Utility to administer the Linux Virtual Server Repo: base Matched from: Filename: /etc/rc.d/init.d/ipvsadm Filename: /sbin/ipvsadm I use keepalived/lvs. Yes, you need to install it. Otherwise, there's no way for you to manage the lvs function? At least, that's what I've been led to believe... Cheers Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] /etc/hosts - hostname alias for 127.0.0.1
On 03/07/2011 08:21 PM, Nico Kadel-Garcia wrote: That said, it can be problematic when you ping $HOSTNAME and get a valid 127.0.0.1 response, and haven't actually tested your external port. It also requires thought for configuring SSH and SNMP and NFS to allow localhost access. When you ping the IP address of your external link, that packet gets short-circuited in the kernel and never goes to the physical port, so you aren't testing your external port for that case either. -- Bob Nichols NOSPAM is really part of my email address. Do NOT delete it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] keepalived+LVS
thanks for relay!
if i only use ha+lvs configuration of keepalived.the load balance not work.
then,i install ipvsadm and setup lvs with tun by ipvsadm ,it's work.
command line below:
ipvsadm -A -t 172.16.39.100:80 -s rr
ipvsadm -a -t 172.16.39.100:80 -r 172.16.39.30:80 -i
ipvsadm -a -t 172.16.39.100:80 -r 172.16.39.40:80 -i
-lb server
(master) keepalived.conf
global_defs {
router_id LVS_DEVEL_M
}
vrrp_instance websev {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass
}
virtual_ipaddress {
172.16.39.100
}
}
virtual_server 172.16.39.100 80 {
delay_loop 6
lb_algo rr
lb_kind TUN
persistence_timeout 10
protocol TCP
real_server 172.16.39.30 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 172.16.39.40 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
---real server 1
command --
ifconfig tunl0 172.16.39.100 netmask 255.255.255.0 up
route add -host 172.16.39.100 dev tunl0
echo 1 /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo 1 /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p
--
2011/3/8 Steve Barnes st...@echo.id.au
all!
if i want to use lvs function of keepalived , i must install ipvsadm ?
tks!
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[steve@mail ~]$ yum provides '*/ipvsadm'
Loaded plugins: fastestmirror
addons
| 951 B
00:00
base
| 2.1 kB
00:00
extras
| 2.1 kB
00:00
updates
| 1.9 kB
00:00
ipvsadm-1.24-10.x86_64 : Utility to administer the Linux Virtual Server
Repo: base
Matched from:
Filename: /etc/rc.d/init.d/ipvsadm
Filename: /sbin/ipvsadm
I use keepalived/lvs. Yes, you need to install it. Otherwise, there's no
way for you to manage the lvs function?
At least, that's what I've been led to believe...
Cheers
Steve
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Re: [CentOS] keepalived+LVS
if i only use ha+lvs configuration of keepalived.the load balance not work.
then,i install ipvsadm and setup lvs with tun by ipvsadm ,it's work.
command line below:
ipvsadm -A -t http://172.16.39.100:80 172.16.39.100:80
-s rr
ipvsadm -a -t http://172.16.39.100:80 172.16.39.100:80
-r http://172.16.39.30:80 172.16.39.30:80
-i
ipvsadm -a -t http://172.16.39.100:80 172.16.39.100:80
-r http://172.16.39.40:80 172.16.39.40:80
-i
-lb server
(master) keepalived.conf
global_defs {
router_id LVS_DEVEL_M
}
vrrp_instance websev {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass
}
virtual_ipaddress {
172.16.39.100
}
}
virtual_server 172.16.39.100 80 {
delay_loop 6
lb_algo rr
lb_kind TUN
persistence_timeout 10
protocol TCP
real_server 172.16.39.30 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 172.16.39.40 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
---real server 1
command --
ifconfig tunl0 172.16.39.100 netmask 255.255.255.0 up
route add -host 172.16.39.100 dev tunl0
echo 1 /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo 1 /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p
Assuming I understand you correctly, and assuming you have an init.d script in
place, run this command:
grep daemon /etc/init.d/keepalived
Odds are, you're editing /usr/local/etc/keepalived.conf, but the init.d script
starts keepalived and tells it to use /etc/keepalived.conf
?
Steve
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Re: [CentOS] keepalived+LVS
no,my mean is the keepalived lvs need ipvsadm
2011/3/8 Steve Barnes st...@echo.id.au
if i only use ha+lvs configuration of keepalived.the load balance not
work.
then,i install ipvsadm and setup lvs with tun by ipvsadm ,it's work.
command line below:
ipvsadm -A -t http://172.16.39.100:80 172.16.39.100:80
-s rr
ipvsadm -a -t http://172.16.39.100:80 172.16.39.100:80
-r http://172.16.39.30:80 172.16.39.30:80
-i
ipvsadm -a -t http://172.16.39.100:80 172.16.39.100:80
-r http://172.16.39.40:80 172.16.39.40:80
-i
-lb server
(master) keepalived.conf
global_defs {
router_id LVS_DEVEL_M
}
vrrp_instance websev {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass
}
virtual_ipaddress {
172.16.39.100
}
}
virtual_server 172.16.39.100 80 {
delay_loop 6
lb_algo rr
lb_kind TUN
persistence_timeout 10
protocol TCP
real_server 172.16.39.30 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 172.16.39.40 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
---real
server 1 command
--
ifconfig tunl0 172.16.39.100 netmask 255.255.255.0 up
route add -host 172.16.39.100 dev tunl0
echo 1 /proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/tunl0/arp_announce
echo 1 /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p
Assuming I understand you correctly, and assuming you have an init.d script
in place, run this command:
grep daemon /etc/init.d/keepalived
Odds are, you're editing /usr/local/etc/keepalived.conf, but the init.d
script starts keepalived and tells it to use /etc/keepalived.conf
?
Steve
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Re: [CentOS] keepalived+LVS
no,my mean is the keepalived lvs need ipvsadm Ah right. Sorry, I thought you were having more problems :) Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down)
i couldn't connect to it to check through ssh. and when it comes to the console, i couldn't do anything either as a repetitive output as the screen shot attached keeps appearing. this is an internal testing server with apache and mysql installed. usually the load average is 8 % max. server's specs: Intel Core i7-950 3.06GHz 8MB Quad Core 4.8GT/s 8 GB of RAM it's worth mentioning that i have software raid and LVM set on it. iv'e reach online that the weekly raid schedule may cause this though i cant seem to b sure of that any advice how to check? Date: Mon, 7 Mar 2011 09:24:16 -0800 From: jpelt...@sfu.ca To: centos@centos.org Subject: Re: [CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down) - Original Message - | Hello, | | Today my server stopped responding. | i went to the console and on the screen there were a continuous loop | of the following info shown on the screen: | | BUG: soft lockup - CPU#0 stuck for 10s! [java:13959] | | and alot of other information. | ii've took a screen shot of the info shown , you can find it under the | following url: http://img585.imageshack.us/i/img00012201103070833.jpg/ | and had to hard reset for it to be back up and running. | | i tried googling with no luck for direct relevant info. | so hoping you can help out | | Thanks, | | --Roland | | ___ | CentOS mailing list | CentOS@centos.org | http://lists.centos.org/mailman/listinfo/centos This is likely due to thread deadlock. What is the load on the machine at the time that this error occurs? I've seen this very error when running The Mathworks Distributed Computing Toolbox server. The machine would become very unsettled when it tried to run on more than four 2 CPUs. How many CPUs are in this system? -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpelt...@sfu.ca Website : http://www.sfu.ca/itservices http://blogs.sfu.ca/people/jpeltier ___ 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
