Re: [CentOS-docs] HowTos - 21. CentOS Guidelines - How to create public mirrors for CentOS
On Thu, Jun 17, 2010 at 12:08 AM, Maulvi Bakar mau...@maulvi.net wrote: Hi all I guess, as per http://wiki.centos.org/Contribute - 3. Contribute to the Wiki, I am being persistent. Good :) The proposal is mainly to address these 'frequently' asked questions. Other proposed additions that was listed are mainly extras or bonuses - things that I think would be helpful and beneficial to the community, speeding up deployments of new mirrors by having some of the technical questions pre-answered in a howto. I hope my proposal is acceptable.. Yeah, I think the bantering here was more about where to put a document like that, and I must admint that I am still not perfectly sure on where to put that. But: Let me give you access to your Homepage on the Wiki, you can then create the article under there for others to look at it. In the meanwhile it might become clearer on where to put that article. MaulviBakar - is that your wiki account? Regards, Ralph ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] HowTos - 21. CentOS Guidelines - How to create public mirrors for CentOS
On Thu, Jun 17, 2010 at 11:03 PM, Ralph Angenendt ralph.angene...@gmail.com wrote: On Thu, Jun 17, 2010 at 12:08 AM, Maulvi Bakar mau...@maulvi.net wrote: Hi all I guess, as per http://wiki.centos.org/Contribute - 3. Contribute to the Wiki, I am being persistent. Good :) The proposal is mainly to address these 'frequently' asked questions. Other proposed additions that was listed are mainly extras or bonuses - things that I think would be helpful and beneficial to the community, speeding up deployments of new mirrors by having some of the technical questions pre-answered in a howto. I hope my proposal is acceptable.. Yeah, I think the bantering here was more about where to put a document like that, and I must admint that I am still not perfectly sure on where to put that. But: Let me give you access to your Homepage on the Wiki, you can then create the article under there for others to look at it. In the meanwhile it might become clearer on where to put that article. MaulviBakar - is that your wiki account? Regards, Ralph Hi Ralph Thank you for responding ;-) Yes, my wiki account's username is MaulviBakar. In regards to the document location, IMHO I'd say a link should be added to FAQ section of the InfraWiki to the current location of HowTo, which if approved, to be expanded. Sincere regards and thanks Maulvi Bakar ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] ArtWork edit
Dear Russ. Your wish is noted; I figure leaving markers is a ready test if the author (or another with edits) was interested enough to follow the page, and to read their email, and to address it I see people following me all the time with wiki edits and read the diffs. I note your participation in the OpenSUSE self-critque, and in reading further the outlink to: http://www.90-9-1.com/ mentioned therein, whihch I commend to all on this list. I am experimenting to see if my most common following editor simply fixes the remaining passive voice I noted in the commit message Not sure if the list is the right place to talk about that, but it's an interesting theory (which is obviously true in most cases). My aim is to motivate more ppl to become editors or even creators, because that's what open source is about. The times of passive lurking are over :) -- Greets Marcus ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
[CentOS] cameras and CentOS
Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? Jobst -- Student to Teacher: Sir, what's an oxymoron? Teacher to Student: Microsoft security. | |0| | Jobst Schmalenbach, jo...@barrett.com.au, General Manager | | |0| Barrett Consulting Group P/L The Meditation Room P/L |0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
Hi, Am 17.06.10 08:22, schrieb Jobst Schmalenbach: Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? may be with that usb extender: XTENDEX® USB-C5-LC - http://www.networktechinc.com/usbc5.html Cheers - Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reini...@filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Geschäftsführer: Prof. Thomas Schadt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
Jobst Schmalenbach wrote: Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? micro systems running linux at each USB location, all connected with ethernet. it doesn't take much. http://www.globalscaletechnologies.com/p-31-guruplug-server-standard.aspx or http://www.mini-box.com/Alix-2B-Board-2-LAN-2-MINI-PCI_3 etc etc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cpuspeed settings??
ken wrote: Hey, folks, Sometimes my workstation bogs down... slows to a crawl. Using gkrellm, it's obvious the CPU is the laggard. The top utility confirms: the load average gets up over 4 at times. But this occurs when cpu stepping pegs the speed at 600MHz. This processor is capable of 1.5GHz and when it's allowed to run at that speed, the load average is under 2, which is fine. So the question is: what's a good /etc/sysconfig/cpuspeed file? This workstation is a notebook and it can get hot. Of course I'd rather type on slow machine than a machine with a fried mainboard, so a report of a high temperature should kick in the governor and lower the speed. well, *is* the CPU really hot when cpuspeed slows it down? If it is then there's no need to tweak /etc/sysconfig/cpuspeed , the defaults are doing what you want. Depending on your CPU you can monitor its temp with rpms from elrepo, eg kmod-coretemp for some intels. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On Thu, Jun 17, 2010 at 1:03 AM, Boris Epstein borepst...@gmail.com wrote: I am just trying to consider my options for storing a large mass of data (tens of terrabytes of files) and one idea is to build a clustered FS of some kind. Has anybody had any experience with that? Any recommendations? You need a shared SAN back end to run traditional cluster file systems. If you environment is all Linux, then Lustre (lustre.org) works well. If you need other OS support, the commercial alternatives like Quantum StorNext and IBRIX (now acquired by HP) are good alternatives. - Raja ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
Raja Subramanian wrote: You need a shared SAN back end to run traditional cluster file systems. there are parallel storage file systems like Ibrix FusionFS that work with an array of systems with direct attach storage. FusionFS is commercial oh, its HP now, hmmm ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
Give GFS a chance, works very well for us and centos ships it On 06/17/2010 10:19 AM, Raja Subramanian wrote: On Thu, Jun 17, 2010 at 1:03 AM, Boris Epstein borepst...@gmail.com wrote: I am just trying to consider my options for storing a large mass of data (tens of terrabytes of files) and one idea is to build a clustered FS of some kind. Has anybody had any experience with that? Any recommendations? You need a shared SAN back end to run traditional cluster file systems. If you environment is all Linux, then Lustre (lustre.org) works well. If you need other OS support, the commercial alternatives like Quantum StorNext and IBRIX (now acquired by HP) are good alternatives. - Raja ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
On Thu, 2010-06-17 at 16:22 +1000, Jobst Schmalenbach wrote: Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? Jobst How about IP Cameras? -- Calin Key fingerprint = 37B8 0DA5 9B2A 8554 FB2B 4145 5DC1 15DD A3EF E857 = There is no distinctly American criminal class except Congress. -- Mark Twain ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Redhat CD with kickstart file
Hi, I am trying to create a custom iso that I can use to install machines. I want to include my custom kickstart file on the distro and when its put in get the system to build using it. I have done some reading about this process, but i still havent been able to get it working with out any problems. I have ripped the contents of the iso by mounting it on a loop back device. I then put my kickstart file names ks.cfg into /isolinux/ on the ripped cd. I then use mkisofs to recreate the iso, but every time i boot from it i get either unknown keyword in config file, could not find kernel image: linux or invalid or corrupt kernel image error messages. Has anyone got a step by step guid to how to do this as this is driving me nuts! Hope someone can help. Thankyou! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum force
Hi, A bit of history is in order here: http://www.karan.org/blog/index.php/2010/06/17/why-is-there-a-perl-i386-in-my-x86_64-install On 15/06/2010 21:10, m.r...@5-cent.us wrote: I'm trying to do an update to some servers... and they have both i386 and x86_64 perl. The latter won't update, because the idiotic *man pages* are dups. Is there *any* way, short of using rpm directly with a --force, to get yum to ignore the dups and do the update? I dont think that was the issue at all :) And why does *anyone* make it so that a dup manpage is a reason to fail (and don't tell me they do it generically for any of the packages in the .rpm...)? Its an artifact from the idea of multilib and its implementation in rpm, docs that md5 match between builds archs' of the same package are silently ignored. The other way to look at this is that two builds, for the same source will produce identical outputs if built under the same conditions ( makefiles, arch, buuild roots, dep chains, machine conditions etc ). When you extend that over multiple arch's, the docs are the only thing you need to be concerned about, since the binaries you get will depend on what and how the multilib policy is implemented on the machine. If you find there are conflicts in package-vers-release.arch where arch is the only variant - file a bug report; something in the buildsystem isn't doing its job right. so, in summary : the problem you were seeing was not caused by a dupe manpage, it was caused by a dupe manpage from different versions of perl ( had the version been the same, and the md5's for the doc's been the same, they would not cause a conflict ). There are different ways to handle this situation, but to be honest, I dont see much fault with the way things are right now with rpm multilib policy. it works. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] amazon ec2 and centos?
hi Don, On 15/06/2010 21:29, Don MacAskill wrote: I'm happy to help in some way, too. We have barebones CentOS 5 images we've been using in EC2 for a long time, and our process for initially creating them is fairly well documented, so holler if I can help. Thanks for your offer, I might just do that. Also, thanks for the smugmug machine you guys donated to the project, it has been put into good use over the years! - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Redhat CD with kickstart file
From: Anthony Davis t...@specialistdevelopment.com I am trying to create a custom iso that I can use to install machines. This used to work for me (I think): mount CentOS-XXX.iso /mnt/cdrom -t iso9660 -o loop cp -a /mnt/cdrom /tmp/cdrom cp ks.cfg /tmp/cdrom/ vi /tmp/cdrom/isolinux/isolinux.cfg default linux ks=cdrom:/ks.cfg Mini iso (without packages): cd /tmp/cdrom mkisofs -o ../mini.iso -b isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -R -J -v -T isolinux/ Or full iso (with packages): cd /tmp mkisofs -o full.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -R -J -v -T cdrom JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Redhat CD with kickstart file
On Thu, 2010-06-17 at 11:15 +0100, Anthony Davis wrote: Hi, I am trying to create a custom iso that I can use to install machines. I want to include my custom kickstart file on the distro and when its put in get the system to build using it. I have done some reading about this process, but i still havent been able to get it working with out any problems. I have ripped the contents of the iso by mounting it on a loop back device. I then put my kickstart file names ks.cfg into /isolinux/ on the ripped cd. I then use mkisofs to recreate the iso, but every time i boot from it i get either unknown keyword in config file, could not find kernel image: linux or invalid or corrupt kernel image error messages. Has anyone got a step by step guid to how to do this as this is driving me nuts! Hope someone can help. Thankyou! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos http://www.harkness.co.uk/other/RHEL4_custom_dvd.html HTH, -- Calin Key fingerprint = 37B8 0DA5 9B2A 8554 FB2B 4145 5DC1 15DD A3EF E857 = If you can read this, you're too close. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum force
Karanbir Singh wrote: Hi, A bit of history is in order here: http://www.karan.org/blog/index.php/2010/06/17/why-is-there-a-perl-i386-in-my-x86_64-install On 15/06/2010 21:10, m.r...@5-cent.us wrote: I'm trying to do an update to some servers... and they have both i386 and x86_64 perl. The latter won't update, because the idiotic *man pages* are dups. Is there *any* way, short of using rpm directly with a --force, to get yum to ignore the dups and do the update? I dont think that was the issue at all :) And why does *anyone* make it so that a dup manpage is a reason to fail (and don't tell me they do it generically for any of the packages in the .rpm...)? Its an artifact from the idea of multilib and its implementation in rpm, docs that md5 match between builds archs' of the same package are silently ignored. The other way to look at this is that two builds, for the same source will produce identical outputs if built under the same conditions ( makefiles, arch, buuild roots, dep chains, machine conditions etc ). When you extend that over multiple arch's, the docs are the only thing you need to be concerned about, since the binaries you get will depend on what and how the multilib policy is implemented on the machine. If you find there are conflicts in package-vers-release.arch where arch is the only variant - file a bug report; something in the buildsystem isn't doing its job right. so, in summary : the problem you were seeing was not caused by a dupe manpage, it was caused by a dupe manpage from different versions of perl ( had the version been the same, and the md5's for the doc's been the same, they would not cause a conflict ). There are different ways to handle this situation, but to be honest, I dont see much fault with the way things are right now with rpm multilib policy. it works. In this particular instance, is removing perl.i386 the right thing to do? Are there any common situations where it would be used on an x86_64 system? -- Les mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum force
On 17/06/2010 13:36, Les Mikesell wrote: In this particular instance, is removing perl.i386 the right thing to do? Are there any common situations where it would be used on an x86_64 system? Removing perl.i386 is the way to go here. I don't personally know of any situations where perl.i386 might have been required. Most people who are building perl modules should be linking with and against the perl.x86_64 anyway ( even when doing builds against native libraries ). There are some vendors who still hand out binaries that need perl.i386; but in those cases, perl.i386 can be installed by name. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
At Thu, 17 Jun 2010 16:22:48 +1000 CentOS mailing list centos@centos.org wrote: Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? It would be simplier to just get a network camera, such as the ones made by axis.com. Jobst -- Robert Heller -- Get the Deepwoods Software FireFox Toolbar! Deepwoods Software-- Linux Installation and Administration http://www.deepsoft.com/ -- Web Hosting, with CGI and Database hel...@deepsoft.com -- Contract Programming: C/C++, Tcl/Tk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Kernel independent DRBD packages for RHEL, CentOS and Scientific Linux
Hi, I would like to announce a set of DRBD kABI-tracking kernel module packages for RHEL5, CentOS-5 and Scientific Linux 5 kernels. These packages have been introduced into the ELRepo testing repository (http://elrepo.org/). You can find these packages at: http://elrepo.org/linux/testing/el5/ The ELRepo project is a community project providing various additional kernel modules for Red Hat Enterprise Linux and derivative kernels that aim to be kernel independent. Next to this set of DRBD 8.3.8 kernel modules the project provides dozens of kmod RPM packages and hundreds of kernel modules for a variety of hardware and kernel functionality. In this case we are looking for DRBD users willing to test these packages and provide feedback and support in our support channels for future users. In case there is interest, we can provide drbd 8.0.16 packages on request. We welcome your feedback on our mailinglist and bug-tracker, respectively at: http://lists.elrepo.org/mailman/listinfo/elrepo http://elrepo.org/bugs/main_page.php Kind regards, -- -- dag wieers, d...@wieers.com, http://dag.wieers.com/ -- [Any errors in spelling, tact or fact are transmission errors] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On Jun 16, 2010, at 4:17 PM, Joseph L. Casale jcas...@activenetwerx.com wrote: I am just trying to consider my options for storing a large mass of data (tens of terrabytes of files) and one idea is to build a clustered FS of some kind. Has anybody had any experience with that? Any recommendations? You haven't actually stated whether you want the backing devices distributed or have the file system support more than one mount? You likely don't need a cluster aware fs, if you need to access the data in more than one place any of several file sharing methodologies will work. I suspect as your storage need is large, you need to distribute it across more than one block device probably on several servers? DRBD is of no use here. You are probably looking to have multiple iSCSI/FC storage servers/ appliances in the backend with one or more NAS head servers serving it up via NFS/CIFS. If the head servers will be serving the same file systems simultaneously then you need a cluster file system and clustering software. If each head server will be serving a distinct file system then you probably just need some HA software like heartbeat or pacemaker to have those exports fail-over to the other head server(s) in the event of a head server failure. -Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On 16/06/2010 21:11, Boris Epstein wrote: Will surely check Glusterfs out. What's your thoughts on GPFS: http://en.wikipedia.org/wiki/GPFS ? I've used gpfs in the past, but it was a long time back. It works, mostly just does what it needs to do and stays out of your way. When we were using it, needed an AIX node for some of the director stuff, but I've seen it run from a pure linux environment recently ( on CentOS-4 ! ) If I inherited a gpfs run stack, I wont complain about it. But if I was doing something new, I'd look elsewhere. eg. Ceph is interesting. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On 16/06/2010 21:12, Todd Denniston wrote: In short if you are considering DRBD as a backing device, definitely ask over on their mailing list and I suspect that mailing list population has a higher percentage of folks who use cluster FSs. DRBD is only worth looking at if you have something very small, or are in an edge case where distributing the application itself isnt an option. To be honest, those edge cases are drying up a bit these days. I'd start by looking at the app and seeing if I can just distribute that. If not, then look at a distributed store ( riak anyone ? ) and if not then look at clustering a file system for legacy type use. Let the app and deployment role define what sort of a hammer you want to use here :) - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On 17/06/2010 09:28, Juergen Gotteswinter wrote: Give GFS a chance, works very well for us and centos ships it yes, seconded. The gfs stack works really well too. I'm running 2 instances and have not really had any major 'issues'. Production grade clvm's snapshot's would be a nice-to-have, but not everyone needs those. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
Boris Epstein sent a missive on 2010-06-16: Hi all, I am just trying to consider my options for storing a large mass of data (tens of terrabytes of files) and one idea is to build a clustered FS of some kind. Has anybody had any experience with that? Any recommendations? Thanks in advance for any and all advice. Take a look at hadoop http://hadoop.apache.org and specifically HDFS (hadoop distributed file system) http://hadoop.apache.org/hdfs/ I've used it in conjunction with nutch across 20 odd servers (circa 10TB). When I used it the down side was a single metadata node, but this may have changed by now. The data is stored redundantly across the nodes and doesn't seem to require any special hardware (I ran it on dell 1425's). HTH Simon. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cpuspeed settings??
On 06/17/2010 04:16 AM Nicolas Thierry-Mieg wrote: ken wrote: Hey, folks, Sometimes my workstation bogs down... slows to a crawl. Using gkrellm, it's obvious the CPU is the laggard. The top utility confirms: the load average gets up over 4 at times. But this occurs when cpu stepping pegs the speed at 600MHz. This processor is capable of 1.5GHz and when it's allowed to run at that speed, the load average is under 2, which is fine. So the question is: what's a good /etc/sysconfig/cpuspeed file? This workstation is a notebook and it can get hot. Of course I'd rather type on slow machine than a machine with a fried mainboard, so a report of a high temperature should kick in the governor and lower the speed. well, *is* the CPU really hot when cpuspeed slows it down? If it is then there's no need to tweak /etc/sysconfig/cpuspeed , the defaults are doing what you want. No, The temperature can be relatively low and cpu is still stepped down to 600MHz, this while the load is over 3 (the cpu idle reads 1%). Depending on your CPU you can monitor its temp with rpms from elrepo, eg kmod-coretemp for some intels. I've been monitoring the temperature, cpu speed (governed), and other system factors for years with ondemand and gkrellm. The problem really is as I first stated. And the solution-- good settings for /etc/sysconfig/cpuspeed-- is really what is needed (at least as far as can be discerned at this time). Thanks for your help. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] clustered file system of choice
On Wed, 16 Jun 2010 15:33:02 -0400 Boris Epstein borepst...@gmail.com wrote: Hi all, I am just trying to consider my options for storing a large mass of data (tens of terrabytes of files) and one idea is to build a clustered FS of some kind. Has anybody had any experience with that? Any recommendations? Thanks in advance for any and all advice. Boris. Hi, You can take a look at http://www.moosefs.org. It is a network, fault-tolerant FS, posix compliant, allows snapshots, uses fuse, your code doesn't need to be changed to access the FS. You can easily choose the number of replicas of files/dirs you want. It is easy to deploy, runs in user-space. Some people runs it successfully on 500+TB. Plus, I've made a CentOS repo here: http://centos.kodros.fr/moosefs.repo Regards, Laurent pgp0aZsiashVc.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cpuspeed settings??
ken wrote: On 06/17/2010 04:16 AM Nicolas Thierry-Mieg wrote: ken wrote: Hey, folks, Sometimes my workstation bogs down... slows to a crawl. Using gkrellm, it's obvious the CPU is the laggard. The top utility confirms: the load average gets up over 4 at times. But this occurs when cpu stepping pegs the speed at 600MHz. This processor is capable of 1.5GHz and when it's allowed to run at that speed, the load average is under 2, which is fine. So the question is: what's a good /etc/sysconfig/cpuspeed file? This workstation is a notebook and it can get hot. Of course I'd rather type on slow machine than a machine with a fried mainboard, so a report of a high temperature should kick in the governor and lower the speed. well, *is* the CPU really hot when cpuspeed slows it down? If it is then there's no need to tweak /etc/sysconfig/cpuspeed , the defaults are doing what you want. No, The temperature can be relatively low and cpu is still stepped down to 600MHz, this while the load is over 3 (the cpu idle reads 1%). Depending on your CPU you can monitor its temp with rpms from elrepo, eg kmod-coretemp for some intels. I've been monitoring the temperature, cpu speed (governed), and other system factors for years with ondemand and gkrellm. The problem really is as I first stated. And the solution-- good settings for /etc/sysconfig/cpuspeed-- is really what is needed (at least as far as can be discerned at this time). OK. can't help you much then, the defaults have worked well for me. It could be useful to know what CPU you have, what governor you're using (/etc/init.d/cpuspeed status), and look at stuff in /sys/devices/system/cpu/cpu*/cpufreq/ . You could lower UP_THRESHOLD in /etc/sysconfig/cpuspeed , see what value you're currently using and lower that. Or try another governor. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] NFS - Permission Denied
Hi All, This is the settings of my NFS server (192.168.10.55) /etc/exports: /nfs/iso 192.168.10.0/255.255.255.0(rw,sync)http://192.168.10.0/255.255.255.0%28rw,sync%29 From the remote host, I mount it correctly. But when I write/create files/directory inside the mounted nfs directory (from /nfs/test), it will give me Permission Denied. [r...@remote]# mount -t nfs 192.168.10.55:/nfs/iso /nfs/test [r...@remote]# mkdir /nfs/test/testing mkdir: cannot create directory `testing': Permission denied Hope anyone could help me to fix this. Thank you. Regards, James ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
Looks like you need to allow nfs through your firewall so that it can be accessed Sent from my BlackBerry® wireless device available from bmobile. -Original Message- From: James Corteciano ja...@linux-source.org Date: Fri, 18 Jun 2010 00:17:04 To: CentOS mailing listcentos@centos.org Subject: [CentOS] NFS - Permission Denied ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
If it's giving him a file system error on the remote host it's NOT a fw issue Sent from my iPhone On Jun 17, 2010, at 12:22 PM, earlarami...@gmail.com wrote: Looks like you need to allow nfs through your firewall so that it can be accessed Sent from my BlackBerry® wireless device available from bmobile. -Original Message- From: James Corteciano ja...@linux-source.org Date: Fri, 18 Jun 2010 00:17:04 To: CentOS mailing listcentos@centos.org Subject: [CentOS] NFS - Permission Denied ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
James Corteciano wrote: Hi All, This is the settings of my NFS server (192.168.10.55) /etc/exports: /nfs/iso 192.168.10.0/255.255.255.0(rw,sync) http://192.168.10.0/255.255.255.0%28rw,sync%29 From the remote host, I mount it correctly. But when I write/create files/directory inside the mounted nfs directory (from /nfs/test), it will give me Permission Denied. [r...@remote]# mount -t nfs 192.168.10.55:/nfs/iso /nfs/test [r...@remote]# mkdir /nfs/test/testing mkdir: cannot create directory `testing': Permission denied isn't it root squash in action? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
On Thu, Jun 17, 2010 at 12:17 PM, James Corteciano ja...@linux-source.org wrote: Hi All, This is the settings of my NFS server (192.168.10.55) /etc/exports: /nfs/iso 192.168.10.0/255.255.255.0(rw,sync) From the remote host, I mount it correctly. But when I write/create files/directory inside the mounted nfs directory (from /nfs/test), it will give me Permission Denied. [r...@remote]# mount -t nfs 192.168.10.55:/nfs/iso /nfs/test [r...@remote]# mkdir /nfs/test/testing mkdir: cannot create directory `testing': Permission denied Hope anyone could help me to fix this. Thank you. Regards, James ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos James, On the server, who owns /nfs/iso? What are the permissions on that directory? Boris. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
Hi Boris, [r...@server]# ls -ld /nfs/iso drwxrwx--- 2 root apache 4096 Jun 18 00:46 /nfs/iso Regards, James On Fri, Jun 18, 2010 at 12:36 AM, Boris Epstein borepst...@gmail.comwrote: On Thu, Jun 17, 2010 at 12:17 PM, James Corteciano ja...@linux-source.org wrote: Hi All, This is the settings of my NFS server (192.168.10.55) /etc/exports: /nfs/iso 192.168.10.0/255.255.255.0(rw,sync)http://192.168.10.0/255.255.255.0%28rw,sync%29 From the remote host, I mount it correctly. But when I write/create files/directory inside the mounted nfs directory (from /nfs/test), it will give me Permission Denied. [r...@remote]# mount -t nfs 192.168.10.55:/nfs/iso /nfs/test [r...@remote]# mkdir /nfs/test/testing mkdir: cannot create directory `testing': Permission denied Hope anyone could help me to fix this. Thank you. Regards, James ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos James, On the server, who owns /nfs/iso? What are the permissions on that directory? Boris. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
On 6/17/2010 1:22 AM, Jobst Schmalenbach wrote: Hi I want to put up a few cameras connected to a CentOS box. I currently have a box with one camera and that works (USB), I can take a pic (the script does that) and see that on a webpage. However, I want to have a couple of cameras a little further away (more than 5 meters). USB has a limit, I have tried that camera with a longer cable and it does not work ... so I need to route that in a different way. Are there equaly as cheap other moethods? Or can I use USB-adapter-network cable-adapter-USB? How can I get that to work? Jobst If you're using them for a security and surveillance solution. A capture card and zoneminder would be a more professional grade solution. Also an all-in-one device like the one found here http://www.nightowlsp.com/products.htm are a great low cost alternative. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
Try turning off root_squash in your /etc/exports file... Default NFS server behavior is to prevent root on client machines from having privileged access to exported files. Servers do this by mapping the root user to some unprivileged user (usually the user nobody) on the server side. This is known as *root squashing.* One way to test, can you add files/dirs as a non root user? John On Thu, Jun 17, 2010 at 12:47 PM, James Corteciano ja...@linux-source.orgwrote: Hi Boris, [r...@server]# ls -ld /nfs/iso drwxrwx--- 2 root apache 4096 Jun 18 00:46 /nfs/iso Regards, James On Fri, Jun 18, 2010 at 12:36 AM, Boris Epstein borepst...@gmail.comwrote: On Thu, Jun 17, 2010 at 12:17 PM, James Corteciano ja...@linux-source.org wrote: Hi All, This is the settings of my NFS server (192.168.10.55) /etc/exports: /nfs/iso 192.168.10.0/255.255.255.0(rw,sync)http://192.168.10.0/255.255.255.0%28rw,sync%29 From the remote host, I mount it correctly. But when I write/create files/directory inside the mounted nfs directory (from /nfs/test), it will give me Permission Denied. [r...@remote]# mount -t nfs 192.168.10.55:/nfs/iso /nfs/test [r...@remote]# mkdir /nfs/test/testing mkdir: cannot create directory `testing': Permission denied Hope anyone could help me to fix this. Thank you. Regards, James ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos James, On the server, who owns /nfs/iso? What are the permissions on that directory? Boris. ___ 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 -- Did you know that it costs forty thousand dollars a year to house each prisoner?...I don't think we should give free room and board to criminals. I think they should have to run twelve hours a day on a treadmill and generate electricity. And if they don't want to run, they can rest in the chair that's hooked up to the generator. -George Carlin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] NFS - Permission Denied
James Corteciano wrote: Hi Boris, [r...@server]# ls -ld /nfs/iso drwxrwx--- 2 root apache 4096 Jun 18 00:46 /nfs/iso as I said, root squash in action. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
Robert Heller wrote: It would be simplier to just get a network camera, such as the ones made by axis.com. Isn't Axis rather expensive? I've found the Linksys WVC54GCA WiFi camera has worked pretty well for me, at least after I updated the firmware. -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cameras and CentOS
Axis also has lower end cameras that don't cost a whole lot. Price depends on what options/capabilities one is looking for in a camera. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research CenterFAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: b.l.ba...@larc.nasa.govhttp://www.vigyan.com/~blbates/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Redhat CD with kickstart file
Hi klanix, Thanks for your help, will try it out. Kind Regards Tony On 17 Jun 2010, at 11:53, kalinix wrote: On Thu, 2010-06-17 at 11:15 +0100, Anthony Davis wrote: Hi, I am trying to create a custom iso that I can use to install machines. I want to include my custom kickstart file on the distro and when its put in get the system to build using it. I have done some reading about this process, but i still havent been able to get it working with out any problems. I have ripped the contents of the iso by mounting it on a loop back device. I then put my kickstart file names ks.cfg into /isolinux/ on the ripped cd. I then use mkisofs to recreate the iso, but every time i boot from it i get either unknown keyword in config file, could not find kernel image: linux or invalid or corrupt kernel image error messages. Has anyone got a step by step guid to how to do this as this is driving me nuts! Hope someone can help. Thankyou! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos http://www.harkness.co.uk/other/RHEL4_custom_dvd.html HTH, -- Calin Key fingerprint = 37B8 0DA5 9B2A 8554 FB2B 4145 5DC1 15DD A3EF E857 = If you can read this, you're too close. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] yum install perl-XML-Parser
When I do the following: yum install perl-XML-Parser I get all these errors. Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.sanctuaryhost.com * base: centos.cs.wisc.edu * extras: mirror.trouble-free.net * updates: mirrors.serveraxis.net Traceback (most recent call last): File /usr/bin/yum, line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File /usr/share/yum-cli/yummain.py, line 309, in user_main errcode = main(args) File /usr/share/yum-cli/yummain.py, line 178, in main result, resultmsgs = base.doCommands() File /usr/share/yum-cli/cli.py, line 345, in doCommands self._getTs(needTsRemove) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 101, in _getTs self._getTsInfo(remove_only) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 112, in _getTsInfo pkgSack = self.pkgSack File /usr/lib/python2.4/site-packages/yum/__init__.py, line 661, in lambda pkgSack = property(fget=lambda self: self._getSacks(), File /usr/lib/python2.4/site-packages/yum/__init__.py, line 501, in _getSacks self.repos.populateSack(which=repos) File /usr/lib/python2.4/site-packages/yum/repos.py, line 260, in populateSack sack.populate(repo, mdtype, callback, cacheonly) File /usr/lib/python2.4/site-packages/yum/yumRepo.py, line 190, in populate dobj = repo_cache_function(xml, csum) File /usr/lib64/python2.4/site-packages/sqlitecachec.py, line 42, in getPrimary self.repoid)) TypeError: Parsing primary.xml error: Start tag expected, '' not found I tried yum clean all and tried again. same thing. What do I do? Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum install perl-XML-Parser
I edited /etc/yum.repos.d/* and set enabled=0 on everything except base and updates. This fixed the issue. This was stock centos 5.5 x86_64. I have added no other repos. jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum install perl-XML-Parser
On 6/17/2010 1:28 PM, Jerry Geis wrote: When I do the following: yum install perl-XML-Parser I get all these errors. Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.sanctuaryhost.com * base: centos.cs.wisc.edu * extras: mirror.trouble-free.net * updates: mirrors.serveraxis.net Traceback (most recent call last): File /usr/bin/yum, line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File /usr/share/yum-cli/yummain.py, line 309, in user_main errcode = main(args) File /usr/share/yum-cli/yummain.py, line 178, in main result, resultmsgs = base.doCommands() File /usr/share/yum-cli/cli.py, line 345, in doCommands self._getTs(needTsRemove) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 101, in _getTs self._getTsInfo(remove_only) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 112, in _getTsInfo pkgSack = self.pkgSack File /usr/lib/python2.4/site-packages/yum/__init__.py, line 661, in lambda pkgSack = property(fget=lambda self: self._getSacks(), File /usr/lib/python2.4/site-packages/yum/__init__.py, line 501, in _getSacks self.repos.populateSack(which=repos) File /usr/lib/python2.4/site-packages/yum/repos.py, line 260, in populateSack sack.populate(repo, mdtype, callback, cacheonly) File /usr/lib/python2.4/site-packages/yum/yumRepo.py, line 190, in populate dobj = repo_cache_function(xml, csum) File /usr/lib64/python2.4/site-packages/sqlitecachec.py, line 42, in getPrimary self.repoid)) TypeError: Parsing primary.xml error: Start tag expected, '' not found I tried yum clean all and tried again. same thing. What do I do? Did you ever fix the problem you had earlier with libxml2? If you haven't, it's going to affect everything you try to do with yum. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum install perl-XML-Parser
--- On Thu, 6/17/10, Jerry Geis ge...@pagestation.com wrote: From: Jerry Geis ge...@pagestation.com Subject: [CentOS] yum install perl-XML-Parser To: CentOS ML centos@centos.org Date: Thursday, June 17, 2010, 11:28 AM When I do the following: yum install perl-XML-Parser I get all these errors. Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.sanctuaryhost.com * base: centos.cs.wisc.edu * extras: mirror.trouble-free.net * updates: mirrors.serveraxis.net Traceback (most recent call last): File /usr/bin/yum, line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File /usr/share/yum-cli/yummain.py, line 309, in user_main errcode = main(args) File /usr/share/yum-cli/yummain.py, line 178, in main result, resultmsgs = base.doCommands() File /usr/share/yum-cli/cli.py, line 345, in doCommands self._getTs(needTsRemove) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 101, in _getTs self._getTsInfo(remove_only) File /usr/lib/python2.4/site-packages/yum/depsolve.py, line 112, in _getTsInfo pkgSack = self.pkgSack File /usr/lib/python2.4/site-packages/yum/__init__.py, line 661, in lambda pkgSack = property(fget=lambda self: self._getSacks(), File /usr/lib/python2.4/site-packages/yum/__init__.py, line 501, in _getSacks self.repos.populateSack(which=repos) File /usr/lib/python2.4/site-packages/yum/repos.py, line 260, in populateSack sack.populate(repo, mdtype, callback, cacheonly) File /usr/lib/python2.4/site-packages/yum/yumRepo.py, line 190, in populate dobj = repo_cache_function(xml, csum) File /usr/lib64/python2.4/site-packages/sqlitecachec.py, line 42, in getPrimary self.repoid)) TypeError: Parsing primary.xml error: Start tag expected, '' not found I tried yum clean all and tried again. same thing. What do I do? there are 2 solutions here. Try the plugin problem fix first. http://just-another.net/2008/11/22/centos-5-upgrade-and-yum/ -- Mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 5.5 gspca
On 14/06/10 18:58, m.r...@5-cent.us wrote: The standalone gspca code is old and deprecated. It's now maintained as part of the Video4Linux v4l-dvb tree here: http://linuxtv.org/ snip The main v4l-dvb tree is here - just grab the latest tarball and build it. Here if you don't see it: http://linuxtv.org/hg/v4l-dvb/archive/tip.tar.bz2 snip Development work on the gspca branch appears to happen here: http://linuxtv.org/hg/~hgoede/gspca/ before being merged into the main v4l-dvb tree. Elrepo.org has a version built for el5 that supports many gspca based devices: http://elrepo.org/tiki/kmod-video4linux snip Ok, so I got the src rpm from el repo. Lessee, first I tried rpmbuild, and that failed, because it *required* xen-devel. So I grabbed the tarfile from /usr/src/redhat/SOURCES, unbzip2'd it, untar'd it, and did a make. And ten or so later, I had 265 kernel modules. I don't want or need to install all of that, so I tried just building gspca, and that failed with unresolved errors. Does anyone know if I can just install gspca*.ko, or even some subgroup of that, or is it dependent on other of the built modules? Two other notes: on an FC 13 box, I see that gspca literally comes with the kernel - does anyone have a clue whether part of that subsystem is available, or is that what I'm looking at, above? Finally, in googling, I found a UVC that's supposed to deal with most USB cameras. Does anyone know anything about it, or will I still need gspca? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cpuspeed settings??
ken wrote, On 06/17/2010 10:46 AM: The problem really is as I first stated. And the solution-- good settings for /etc/sysconfig/cpuspeed-- is really what is needed (at least as far as can be discerned at this time). looking in /etc/sysconfig/cpuspeed around MAX_SPEED= they suggest looking in /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies i.e. for me cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies returns all good settings for the cpu frequencies. which _for_the_laptop_I_have_ is 170 140 120 100 80 60 Setting either MAX_SPEED=100 or MIN_SPEED=80, and restarting the system, has had desired effect for me, i.e., keep the laptop from locking due to overheat. However, Nicolas suggestion of messing with UP_THRESHOLD might be better for you, or should be done in addition to messing with MIN_SPEED= -- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Ganglia
On Tue, Jun 15, 2010 at 04:07:57PM +0100, Simon Billis wrote:
Take a look at ganglia - http://ganglia.sourceforge.net/
This may do what you need.
It's what I've ended up going with. (Munin also looked promising - if I
could get the syntax right to modify its CPU test for individual cores,
which looks quite possible, I just didn't achieve it yet).
A few notes on Ganglia 3.1.7 build/install:
- best complied from source, there are big dependency problems with the
available rpms
- dependencies to satisfy before compilation include (among others):
apr-devel libconfuse libconfuse-devel expat-devel pcre-devel - for the
libconfuse I went to dag/rpmforge
- the make install stage doesn't fully install, despite a required
--sysconfdir flag being used. In particular, gmond -t gmond.conf will
provide the missing file to add to your config dir for that. The
ganglia-3.1.7/gmond/modules/conf.d contents should be copied to
/etc/ganglia/conf.d. Then a line with include
('/etc/ganglia/conf.d/*.conf') should be added to gmond.conf. And the man
pages (in mans and one for gmond.conf in gmond) may be copied
/usr/share/man/man1 and man5 as appropriate. Also, the init files for
gmond and gmetad need to be copied to init.d - but at least this, unlike
the other hand-installation requirements, is documented.
- Beyond that, it's good to change the cluster name = in gmond.conf to
something appropriate before you start to run. You only need gmetad
compiled on the system to run the web reporting front end (and it takes an
configure flag to do that). On other systems just rsycing over the
/etc/ganglia contents will handle configuration just fine (assuming this
is a single cluster). The web pages merely require copying to someplace in
your PHP-capable server's space.
- The multi-core CPU graphing module - the main functionality I was after -
requires some uncommenting in its conf file to get it going. The PCRE
section is enough to uncomment, with pcre installed on your system.
It's pretty simple once the dependencies are installed, and the make
install deficiencies are worked around. It gives a _lot_ of graphs
(probably too many, but studying them over time will tell).
Whit
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Re: [CentOS] Ganglia
On 17/06/2010 23:20, Whit Blauvelt wrote: - best complied from source, there are big dependency problems with the available rpms I find that very hard to believe - to the extent that I don't believe you at all. Or did you mean to say that its not easy to locate a well done rpm set for ganglia ? I've never used ganglia in anger, but know lots and lots of people who do - its the most used trending tool in the hpc world. Also, one thing you did'nt mention is that its exceptionally insecure out of the box, by design. Its meant to be easy to get going and offloads security to site and network policy since most implementations run on isolated management networks no where near the internet. So if you are using it in a situation where you care about who can connect to our agents and what data is seen over the wires - start by spending a few hours securing your install. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum install perl-XML-Parser
On 17/06/2010 20:49, Mark Pryor wrote: there are 2 solutions here. Try the plugin problem fix first. http://just-another.net/2008/11/22/centos-5-upgrade-and-yum/ Dude, that is just random url spamming in irrelevant situations. Whats on that webpage has nothing to do with Jerry's problem. Jerry is sitting behind a broken proxy server, or ( unlikely) hitting a bad mirror which is returning 404's or has a libxml issue that Les already pointed to. That traceback is clearly a case of the xml layer in yum not getting parse-able content, or itself being broken. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, Jun 17, 2010 at 06:20:03PM -0400, Whit Blauvelt wrote: - best complied from source, there are big dependency problems with the available rpms Very few packages are ever best compiled from source on an enterprise distro. What, specifically, is wrong with the 3.0.7 in EPEL? John -- Mankind is a single body and each nation a part of that body. We must never say What does it matter to me if some part of the world is ailing? If there is such an illness, we must concern ourselves with it as though we were having that illness. Mustafa Kemal Ataturk (1881-1938), founder and first President of the Republic of Turkey pgpVDozj5Jldj.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, 17 Jun 2010 at 6:51pm, John R. Dennison wrote On Thu, Jun 17, 2010 at 06:20:03PM -0400, Whit Blauvelt wrote: - best complied from source, there are big dependency problems with the available rpms Very few packages are ever best compiled from source on an enterprise distro. What, specifically, is wrong with the 3.0.7 in EPEL? Well, if you have more than 4TB of RAM in your grid, the memory graph wraps. :) Other than that, though, it works wonderfully. That being said, it's trivial to recompile the F13 RPM for 3.1.2 for centos-5. -- Joshua Baker-LePain QB3 Shared Cluster Sysadmin UCSF ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Fri, Jun 18, 2010 at 12:37:11AM +0100, Karanbir Singh wrote: On 17/06/2010 23:20, Whit Blauvelt wrote: - best complied from source, there are big dependency problems with the available rpms I find that very hard to believe - to the extent that I don't believe you at all. Or did you mean to say that its not easy to locate a well done rpm set for ganglia ? I should care what you believe? Stay ignorant, if you like. If not, take a CentOS system, add the EPEL repository for ganglia, try yum install ganglia, and prepare to see all sorts of package conflicts. Plus it's not the current ganglia anyway. Better to build from tar. I've never used ganglia in anger, but know lots and lots of people who do - its the most used trending tool in the hpc world. What the heck do you mean, used ganglia in anger? That's just incoherent. I'm happy with it. It's working nicely now. But the make install scripting is buggy, so I posted what I've learned about working around that. Also, one thing you did'nt mention is that its exceptionally insecure out of the box, by design. Its meant to be easy to get going and offloads security to site and network policy since most implementations run on isolated management networks no where near the internet. So if you are using it in a situation where you care about who can connect to our agents and what data is seen over the wires - start by spending a few hours securing your install. I did't say my notes were a full article on it! My implementation is, as you suggest, far from the internet. I'll be happy to discuss firewalling and network segmentation if those questions come up. Regards, Whit ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, Jun 17, 2010 at 06:51:52PM -0500, John R. Dennison wrote: Very few packages are ever best compiled from source on an enterprise distro. What, specifically, is wrong with the 3.0.7 in EPEL? Um, that yum install ganglia produces a long list of package conflicts on a current CentOS system? Or that only 3.1.7 has a fully working multicpu module, plus a number of significant bug fixes? If there were a good CentOS build of 3.1.7 I'd happily use it. But getting stuff from EPEL, which is essentially Redhat testing, is as silly as mixing stuff from Debian testing into Debian stable, as far as enterprise systems go. On the other hand, I've run a number of enterprise systems on Gentoo. I'm sure the compiling of everything from source there gives you absolute horrors. But those systems treated me well for years. Now I'm in a mixed Ubuntu/CentOS environment, and I stay with distro packages ... until I don't. When there's a specific program that I need compiled with different options or whatever, well, I've been a Linux sysadmin since '93. I kind of know what I'm doing. What's with you kids these days? Compiling something from tar isn't going to blow things up. At least it's never bitten me, in 17 years. Best, Whit ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, Jun 17, 2010 at 08:01:02PM -0400, Joshua Baker-LePain wrote: That being said, it's trivial to recompile the F13 RPM for 3.1.2 for centos-5. And that would be the proper route to go instead of building from native source :) John -- Which is more believable: In the beginning there was God, who created the universe, or in the beginning there was nothing, which exploded -- nog pgpcT7MjIYvf6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, Jun 17, 2010 at 08:21:00PM -0400, Whit Blauvelt wrote: Um, that yum install ganglia produces a long list of package conflicts on a current CentOS system? Or that only 3.1.7 has a fully working multicpu module, plus a number of significant bug fixes? I just tried a ganglia install from EPEL; absolutely no issues at all. Perhaps if you'd bother to actually document these conflicts one of us might be able to help. That is if we're still willing. I can't speak to your claims of 3.1.7 having bug fixes and the multicpu issue; but I saw no conflicts with EPEL's 3.0.7. If there were a good CentOS build of 3.1.7 I'd happily use it. But getting stuff from EPEL, which is essentially Redhat testing, is as silly as mixing Uh, you've confused EPEL and Fedora apparently. stuff from Debian testing into Debian stable, as far as enterprise systems go. On the other hand, I've run a number of enterprise systems on Gentoo. I'm sure the compiling of everything from source there gives you absolute Gentoo is fine for a toy os. Claiming Gentoo is enterprise is just silly. horrors. But those systems treated me well for years. Now I'm in a mixed Ubuntu/CentOS environment, and I stay with distro packages ... until I don't. When there's a specific program that I need compiled with different options or whatever, well, I've been a Linux sysadmin since '93. I kind of know what I'm doing. If you say so. What's with you kids these days? Compiling something from tar isn't going to blow things up. At least it's never bitten me, in 17 years. Kids? Heh. 17 years? Heh. You're a youngster. Let me know when you've got 25+ years in the industry and then I might be impressed :) John -- Anybody can win unless there happens to be a second entry. -- George Ade (1866 - 1944), American writer, newspaper columnist, and playwright pgpyWyqUIUexE.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ganglia
On Thu, Jun 17, 2010 at 08:09:11PM -0400, Whit Blauvelt wrote: I should care what you believe? Stay ignorant, if you like. If not, take a CentOS system, add the EPEL repository for ganglia, try yum install ganglia, and prepare to see all sorts of package conflicts. Plus it's not the current ganglia anyway. Better to build from tar. Is this vitriol really necessary? I installed ganglia; not a single conflict. If you want shiny and new, why not do it properly and build rpms? John -- He who knows that enough is enough will always have enough. -- Lao-Tzu (BC 600-?), Chinese philosopher, founder of Taoism pgpBVdE4avVIu.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disabling services in CentOS 5.5
Mark, John, and Miguel, Thank you for the information. I will take all of this into consideration with the rest of my research. I do appreciate your feedback and help. -- Doug Registered Linux User #285548 (http://counter.li.org) Never trust a computer you can't throw out a window. -- Steve Wozniak On Wed, Jun 16, 2010 at 3:06 PM, Ski Dawg cen...@skidawg.org wrote: Hello all, I have been doing some searching for information about disabling services within a CentOS 5.5 install. I have found a few different opinions, and wanted to ask for some feedback. First off, the system is running a LAMP stack to serve a web application. It will only be doing email to send occasional messages out (sent via the application only). It will not be receiving email for any users. It is an CentOS 5.5 (fully updated) install running under VMware (esx, I believe). We are not sharing directories via nfs or samba (either from or to this virtual machine). From my research, the services that I am thinking of turning off are: nfs (already off) nfslock portmap rpccgssd rpcidmapd rpcsvcgssd apcid apmd mdmpd mdmonitor Is there any reason that I need to leave any of these services running? Are there others that I should disable as well? Any feedback about this would be greatly appreciated. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disabling services in CentOS 5.5
www.cisecurity.org/tools2/linux/CIS_RHEL5_Benchmark_v1.1.pdf contains very good paper how to harden centos/rhel installation. -- Eero, RHCE ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
