Re: [CentOS] [Q} how can O.S. predicate a disk going to failure??
On Tue, Aug 04, 2009 at 01:38:27PM +0200, Mogens Kjaer wrote: 3. do I need replace this disk now? That would be a good idea, the disk could fail in 5 minutes or in 5 month, you can't tell. Or, indeed, 5 years. I have a number of throwaway workstations at one customer site -- throwaway in that if the disk or system fails, we just rebuild it, and away it goes. Several have been telling me about SMART warnings for YEARS. My experience seems to echo the Google study from a few years back, where SMART wasn't an accurate predictor of disk failure -- some drives SMART then fail, some SMART for years, and some just fail. So the answer is it depends. If getting a replacement is likely to be tricky (ie more than a two or three hour wait), or if the data being stored is highly valuable, then AT LEAST get a spare on site and sit it next to or on the system in question. If the data is extremely highly valuable, do the swap now. But if you don't care about the data, and/or can tollerate some downtime, don't worry about it. Backups *are* good, right? :) -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpIecNhEzKT6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] md0 mounted rw on boot
Hi folks, I updates one of my long-running CentOS 4.x systems today, and afterwards it wouldn't boot properly. My issue was that it would start, then announce: Checking root filesystem /dev/md0 is mounted. e2fsck cannot continue. After much twiddling around, I discovered that if I booted from the first kernel I had, it would boot properly. Now this is a hand-rolled RAID, not an anaconda-generated one. And I seem to recall generating an initrd myself in order for the boot process to work. Does this mean that I have to generate a new initrd every time I want to boot to a new kernel? For the record, this kernel failed: title CentOS (2.6.9-78.0.22.EL) root (hd0,0) kernel /boot/vmlinuz-2.6.9-78.0.22.EL ro quiet root=/dev/md0 initrd /boot/initrd-2.6.9-78.0.22.EL.img ...while this one succeeded: title CentOS-4 i386 (2.6.9-34.EL) root (hd0,0) kernel /boot/vmlinuz-2.6.9-34.EL ro root=/dev/md0 initrd /boot/initrd-2.6.9-34.EL.img And there are several other kernels on the system, but I honestly don't know which ones have been run successfully. Does anyone know what I did wrong? -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgp17LDY8zjBa.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Send syslog to a remote server
One thing which I have not seen discussed yet -- the syslog.conf seems to work much better when you use tabs, not spaces, in it. So in your case it would be *.info;mail.none;authpriv.none;cron.none[tab][tab][t...@192.168.1.5 Don't know if rsyslog.conf has the same requirement. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpDnXp7orddY.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] One for the Cisco experts...
On Tue, Apr 21, 2009 at 10:25:59PM +0100, Daniel Bird wrote: Take a look at Netdisco. I seem to remember it's a little tricky to set up on CentOS but I wouldn't live without it now. A little tricky? Last time I looked at it, I described the installation process as only slightly less complicated than building a Saturn-V rocket out of 1960's era TV parts. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpK2e8wQ2RML.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] One for the Cisco experts...
On Tue, Apr 21, 2009 at 11:44:47AM -0500, Sean Carolan wrote: How can I find out which port on the switch a particular server is connected to? I was hoping that this is somehow possible using the mac address and the data gathered from snmpwalk/snmpget requests but I'm not having much luck. How would you tackle this problem? My notes: http://wiki.xdroop.com/space/snmp/Switching+Tables Basically there are at least two places in snmp where this might be stored. The most obvious is the classic MIB-II Bridge. The wrinkle with this MIB is that some switches maintain separate tables for each VLAN, which means in order to query the switch properly, you have to query the MIB for each VLAN. Newer switches populate the Q-Bridge-MIB instead of or as well as the MIB-II Bridge. This table contains the VLAN that the target MAC is reachable through, which is useful since you don't have to know it ahead of time. We have a six- or seven- year old cisco 3750 which is running an IOS which doesn't have the newer MIB; for this switch, we must explicitly query the MIB-II Bridge for each VLAN. I would hope that newer relesaes of IOS wouldn't have this limitation. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpyay4QHD1bu.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] need trouble ticket system
On Sun, Mar 29, 2009 at 03:07:11PM +0200, Rainer Duffner wrote: as suggest, RT is a good choice. But it requires some thinking and planning in advance, and a good knowledge of PERL-intrinsics on RHEL/CentOS, as it requires around 200 different PERL-module dependencies. See also the RTwiki: http://wiki.bestpractical.com/view/RPMInstall It describes how a CentOS-4 user can use a yum repository to deal with the dependancy hell. I heartilly endorce this approach, as I lost two days trying to satisfy the dependancy hell manually. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpDrk1Eo34M6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] looking for some advice to monitor network usage in office
On Wed, Mar 25, 2009 at 10:52:23AM +0200, Spook ZA wrote: Hi Rudy 2009/3/25 Rudi Ahlers rudiahl...@gmail.com: I've been asked by a college to setup a monitor to monitor a Windows network, but on internet usage. They want to have detailed usage, i.e. on a per IP / PC basis, and if possible to get stats for every protocol, and see over a period of time what goes on. Rudi Ahlers If your firewall / border gateway is running linux, have a look at: http://www.networkuptime.com/tools/netflow/ You need an exporter that will export linux netflow records and software that will collect and present the resultant data. This is almost, but not quite, what I do. Specifically, I use fprobe to generate flows, and then nfsen/nfdump to generate the pretty pictures that management seems to enjoy so much. nfsen can be configured to generate some of the information that you want, but you can write your own perl scripts to parse the raw nfdump files and extract whatever information you want. Links: fprobe: http://sourceforge.net/project/showfiles.php?group_id=63535 nfdump: http://nfdump.sourceforge.net/ nfsen: http://nfsen.sourceforge.net/ -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpJUWl3T98VS.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] new user - with questions
On Fri, Feb 20, 2009 at 10:32:42PM -0500, Michael Klinosky wrote: Is CentOS basically like Fedora? (Well, except for the updates every 6 months!) As in 'look feel', underlying operations, etc. (Btw, I know about removing upstream branding.) Very basically. CentOS/RHEL 5 is loosely based on Fedora Core 6, just as CentOS/RHEL4 is loosely based on FC3. I say loosely because RHEL 6 wasn't based on FC9, and if I am understanding things correctly, won't be based on FC10 either. Any caveats? Meaning, does it use the same repositories that Fedora does? Are there any major or significant differences? CentOS/RHEL is built for stability, meaning what they ship is what you get. You will see bug and security fixes for the applications merged in, but (broadly generally speaking) no new features. The exception to this is device drivers and support; new devices are added to the kernel stream and to the xorg X display engine during each minor release (ie 5.1 to 5.2). As far as repositories go, there are several RHEL/CentOS friendly repositories such as RPMforge. RedHat has one of their own too. Do some research before connecting, they are not always compatible with each other. My preference is for RPMforge, but that's purely based on the fact that I've found enough things in RPMforge that I want. Beyond that, you can *usually* make your own installable RPMs from SRPMs for things that worked with FC6, and you can even resort to building from source code although that gets you away from nice RPM management. Remember, the further you stray from the stock distribution, the more you get into you get to keep all the pieces when it breaks level support. I should just go for the most recent package (5.2) - yes? About how old are the apps? (A few months?) If you were happy with FC6, then yes you want CentOS 5.x. The apps are all not-quite-as-old-as FC6 versions were, but bugfix and security patches are merged in. CentOS 4.x has FC3-vintage applications. The best practice is to do a minimal install from CD or DVD, then immediately do a 'yum update', then 'yum install' the extra pieces you need. (Why? Because if there is a pending update to something you are wanting to use, there's no point installing it from DVD since you will end up downloading it anyways.) How are application updates handled? 5.2 has firefox-3.0-0.beta5.6.el5. I saw (on the Firefox website) that 3.0.6 is out. Will an app update get that version, or something just a bit older? (btw, I know about backporting.) Nope, CentOS 5 will probably have Firefox 3.0-0 for its lifetime. If you want something newer, you can probably retro-fit it yourself. If you need something newer, the stability of CentOS is probably not what you really want. Applications will not be generally refreshed until RHEL/CentOS 6. Does centos use Plymouth? I have a somewhat recent computer (about 3 years old) that has an intel chipset (which Plymouth can't handle yet, and so it needs xdriver=vesa during install). I don't know. If FC6 could handle it, CentOS 5 can probably handle it. Always use the latest DVD/CD image to do your initial install from, that gives you the best chance of hardware compatibility. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpEg7t5Te2Ee.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rpmforge
On Mon, Feb 09, 2009 at 10:50:37AM -0800, Scott Silva wrote: I didn't mean to stir up a ruckus Ruckus stirs itself on most mailing lists! Overworked sysadmins just need to go get a cup of coffee and count to 10 before they hit reply, or at least before they hit send. cen...@centos -- now 35% less bitter! -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpaj9h3lA6dd.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where is PD???
On Fri, Feb 06, 2009 at 12:52:00AM +0800, mcclnx mcc wrote: Checking for ksh... Unable to find PD KSH version. 1. where is PD? not PD, you want pdksh -- the Public Domain version of ksh, the original of which was originally not free. In CentOS 4.x, this was in an RPM called pdksh. The CentOS 5 release seems to include a ksh rpm: $ rpm -qa | grep ksh ksh-20060214-1.7 $ which ksh /usr/bin/ksh Convincing your Oracle installer thing to accept this is something you'll have to take up with Oracle. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpMq42IncOT7.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Automounter issue
Ahh, here we go: https://bugzilla.redhat.com/show_bug.cgi?id=371341 “upgrade to 5.1 breaks autofs for automounted home directories” – see especially comment #13 which describes the symptom, and #25 which explains what the fix is hidden in the records as. Fix appears to be to use kernel kernel-2.6.18-53.1.4 or higher. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpqPMKRmWaTC.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Automounter issue
Picking up a couple of outstanding questions: On Mon, Feb 02, 2009 at 05:53:59PM +, James Pearson wrote: What sort of map is being used for this mount point? i.e. what is the contents of your /etc/auto.master ? # ypcat -k auto.master | grep tools /tools auto.tools -hard,bg,nfsvers=3,tcp,intr,rsize=32786,wsize=32768,nosuid There's nothing in the messages file; I am now sending *.debug to my syslog host to see if anything interesting shows up. Nate asked how many clients are mounting; around 300 systems have the automounter map, but only 30-50 nodes can be expected to be actually using it. Closer inspection reveals that the two systems which are having the problem the most are both v5u1. I'm starting to suspect that the root cause is an automounter issue in 5u1. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpblOJlcpxBc.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Automounter issue
Anyone seen this before? I have a number of file systems nfs mounted onto clients running various versions of CentOS (and Upstream), although mostly they are v5.x flavors. =20 The server is a Network Appliance filer. When the build process for this team runs, it sometimes dies because it can't find files in the automounter tree; if the engineer checks, he sometimes sees a problem, and sometimes doesn't; for example: [pdbu...@build-c5u1: ~] ll /tools/vault/kernels ls: /tools/vault/kernels: No such file or directory [pdbu...@build-c5u1: ~] ll /tools/vault/kernels total 152K drwxr-xr-x 4 pdbuild everyone 4.0K Aug 7 2007 2.4.21-40.EL.CUSTOM.01smp/ drwxr-xr-x 7 pdbuild everyone 4.0K Jun 26 2007 2.6.16.33-1-xen/ drwxr-xr-x 7 pdbuild everyone 4.0K Aug 7 2007 2.6.16.33-xen/ drwxr-xr-x 4 pdbuild everyone 4.0K Jan 3 2008 2.6.18-53.1.4.el5/ drwxr-xr-x 4 pdbuild everyone 4.0K Feb 11 2008 2.6.18-53.1.6.el5/ drwxr-xr-x 4 pdbuild everyone 4.0K Nov 15 2007 2.6.18-53.el5/ drwxr-xr-x 4 pdbuild everyone 4.0K Sep 24 2007 2.6.18-8.el5/ drwxr-xr-x 7 pdbuild everyone 4.0K Oct 16 2007 2.6.18-xen/ [pdbu...@build-c5u1: ~] df /tools/vault/kernels FilesystemSize Used Avail Use% Mounted on nas02:/vol/tools/vault 779G 655G 124G 85% /tools/vault Now I've seen this before where some processes don't wait for the automount= er to do its thing before continuing; they just report fail and move on to the failure handling. I'm guessing that I need some magic on the automounter configuration to change this behavior, can anyone point me in the right direction? Thanks for your time. -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpMuLO35bnIm.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Guidelines for CentOS Mailing List posts
On Sun, Jan 11, 2009 at 05:35:38PM +, Vandaman wrote: What is your contribution to the topic? Or are you one of those who has been top-posting and posting in html? Hmmm... I appear to be: - posting in non-HTML text - bottom posting - trimming I presume that if you are truely interested in my transgressions, ten minutes with google will provide you with ample evidence for a summary execution. I merely found it ironic that you concluded a nag about people's behavior on a mailing list by saying it wasn't the time to be complaining about people's behavior on a mailing list. True, it would have been MORE ironic if your rant had been in HTML, but I guess that's too much to hope for. Would you like the joke explained to you in more detail? -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgp1yhfcFLAXs.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Guidelines for CentOS Mailing List posts
On Sat, Jan 10, 2009 at 11:14:22AM +, Vandaman wrote: Its not the time to be nannying people over how to behave on mailing list. /irony -- /\oo/\ / /()\ \ David Mackintosh | d...@xdroop.com | http://www.xdroop.com pgpuU4MWwR2B8.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT - Please don't feed the Troll(s)
On Wed, Oct 29, 2008 at 02:10:23PM -0400, William L. Maltby wrote: I fully understand the emotional need to respond to one who throws around terms like Communist, Tyrannical, etc. even if ostensibly [...] My feeling was the OP is either an ignorant, unappreciative, self-centered, and emotionally immature person that expects all projects You tripped the irony detector. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpAooRMhr8IO.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: is parted reliable?
On Tue, Oct 14, 2008 at 11:13:18PM +0100, Karanbir Singh wrote: And Just to remind everyone that no, this is still not a general conversation about stuff list. How off-topic is it to ask precisely what is on-topic for this list if questions and discussions of the included components belong on the support mechanisms for those individual parts, and the rest (ie anaconda and friends) probably belongs in the upstream vendor's forums? What does that leave? The color of the logo? (I like the blue.) -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpCpqHcm20c6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] enterprise backup solution (probably amanda?)
On Wed, Jul 30, 2008 at 07:10:40AM -0700, Shawn Everett wrote: I think backups are important and always on topic. You could always use Veritas Netbackup. That's what one of my clients uses with great success. It backups up Windows, Linux and does full, incremental, restores etc etc all from a nice Java GUI. It's $$$ but you can't get more Enterprise than that. ;) Agreed on Veritas NetBackup. An oddly constructed tool, but one we've come to depend on. We also have customers who use Bakbone NetVault. It's broken in different ways than the Veritas NetBackup is. :) -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgptgo5Lvrq6R.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] syslog question
On Tue, Jul 29, 2008 at 02:32:19PM -0400, James Pifer wrote: Any suggestions or guidance? By default, your syslog does not accept syslog entries from remote systems. Edit /etc/sysconfig/syslog, and add a '-r' parameter to the SYSLOGD_OPTIONS option, and restart syslog. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgprV1aNCrgeR.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] syslog question
On Tue, Jul 29, 2008 at 02:46:39PM -0400, James Pifer wrote: Yeah, that was pretty easy. Any way to get it to save logs from different hosts to specific files? I use syslog-ng for that, I think from rpmforge. http://wiki.xdroop.com/space/Sun/Syslog-ng -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpIZg9NHVcf6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] screen detatch
The man page for screen says that I can create a detatched screen running with a set command in it by doing this: $ screen -dm $command However, it doesn't work. Screen exits without creating the detached screen. If I say $ screen $command ...I get dropped into a screen session running $command as I would expect. What's the magic invocation I'm missing? Also, the next step will be for root to launch said screen session as someone else during boot time; am I asking for trouble by trying it? # su - user -c screen -dmS $Label $command Thanks for any insights or pointers to web resources I can use to learn from. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpJY2UMGn4HZ.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] screen detatch
On Tue, Jul 22, 2008 at 06:07:44PM +0100, Luciano Rocha wrote: The man page for screen says that I can create a detatched screen running with a set command in it by doing this: $ screen -dm $command screen -dm isn't the same as screen -d -m. Try the latter. Figured it out. While the first line of my shell script is #!/bin/tcsh ...I am in fact a bash user. One of the things my script is ultimately trying to do is to start multiple things from within the screen session by use of teh screen command itself; because of the shell swap, $STY doesn't seem to be getting set. If I change the first line of my script to be #!/bin/bash, it works as expected. Thanks for looking. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpEHEG9qGTg7.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] preferred software RAID 10?
On Fri, Jul 18, 2008 at 12:31:19AM +0200, Kai Schaetzl wrote: Rudi Ahlers wrote on Thu, 17 Jul 2008 23:10:48 +0200: /boot shouldn't be mirrored, as the BIOS won't know how to boot it. leave /dev/sdb1 the same size as /dev/sda1 and call it /boot2 and try to remember to copy /boot to /boot2 each time you update the kernel. I understand this, but how do you boot from /boot2 on the second HDD if the 1st have failed? You don't (*). I don't understand John's advice here. There is no problem md mirroring /boot. You just need to install grub a second time on the other disk. For that you have to boot from it. (I think I also did it successfully without booting from the other disk in the past, but last time I tried it it didn't want to work like I remembered it should.) I think you mean if you want to boot from it, you have to install grub on it. I've done this. It means if the first disk fails, you can then physically remove the failed disk, put the survivor in as the first disk, then boot from that. To install grub to the second disk: # grub device (hd0) /dev/sdb root (hd0,0) setup (hd0) (blah blah blah) Running install /boot/grub/stage1 (hd0) (hd0)1+16 p (hd0,0)/boot/grub/stage2 /boot/grub/grub.conf… succeeded Done. quit (or /dev/hdb, or whatever is appropriate). To get back to the OP: I've done a RAID-10 under CentOS, and the problem I encountered was that the kernel wasn't smart enough to assemble the RAID without a properly populated /etc/mdadm.conf file. See the details at http://wiki.xdroop.com/space/Linux/Software+Raid+compound+devices -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpwtlkQSuz5j.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] screen command
On Sun, Jul 13, 2008 at 01:46:20AM -0400, Ed Donahue wrote: Anyone know which rpm give you the screen command? Or tell me how to figure this out on my own :-) # yum install screen It will tell you what it wants to download and install before it does it. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpjWCcD3bXSc.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] settings up cheap a NAS / SAN server, is it possible?
On Sun, Jun 29, 2008 at 09:08:15AM +0200, Rudi Ahlers wrote: Hi all I want to look at setting up a simple / cheap SAN / NAS server using normal PIV motherboard, 2GB (or even more) RAM, Core 2 Duo CPU (probably a Intel 6700 / 6750 / 6800) some SATA HDD's (4 or 6x 320GB - 750GB). My budget is limited, so I can't afford a pre-built NAS device. My own experience: I have done two NAS systems using CentOS. One is a HP DL585G1 with four 300GB drives using a hardware RAID-5. The second is a Dell PowerEdge 2600 with four 300GB drives (software raid-10) and two 32GB drives (software raid-1). One has a multi-core Opteron processor, the other has a high-end Xeon processor with HT disabled. Both have 2GB of RAM. Both are used by high-demand compute processes as NFS servers. Despite a lot of fidding, configuring, testing and tuning, neither result is very good when it comes to NFS performance. We've gone so far as to run everything as noatime (ie local mount, nfs export, and nfs client mount) hoping for better performance. In comparing the systems we tried the hardware-RAID5 first on the assumption that HW-Raid5 is faster than SW-Raid, for a higher yield than Raid-10. However we don't think that the elevator used in the kernel makes intelligent stepping decisions on the HW-Raid5 because it doesn't see the real geometry of the disks involved, only the aparrent geometry of the RAID5 disk. The Software-Raid10 is better in some ways because the kernel sees the real disk geometries. Performance is about on par with the other computer, even though the other computer has the better CPU. Due to the hardware involved I couldn't try Solaris 10, but we have had experiences in the past where the NFS server on Solaris was significantly better than the NFS server in CentOS/RedHat, both in terms of throughput and perceved latency under load. If I was doing it again, I'd push harder for a budget for a NetApp filer. For what we are attempting to do, you get what you pay for. If I was doing it again with the budget restrictions, I'd probably try Solaris with software raid. I would then try the *BSD family, but only after Solaris because I have extensive Solaris experience. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgppfXMXeUUwf.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] settings up cheap a NAS / SAN server, is it possible?
On Mon, Jun 30, 2008 at 02:08:33PM -0500, Les Mikesell wrote: Have you updated to Centos 5.2 yet? And if so, did it improve NFS performance? Sorry, these computers are in production now so I can't fiddle with them. Besides, this would be a long upgrade -- they are both CentOS 4.x systems. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpByjAutaftd.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: DMA mode
On Tue, Jun 03, 2008 at 10:17:14AM +0200, Tom G. Christensen wrote: Google suggests booting with ide0=noprobe ide1=noprobe to make sure the ata-piix driver is used. If you don't want to reinstall then make sure initrd contains the ata-piix driver and that references to /dev/hd* are replaced with /dev/sd* in fstab etc. Hi Tom, I can also confirm that this works, thank you for the assistance. Can I ask what you used as your google query? I think I missed something obvious. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpHiRzfw0I3O.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] DMA mode
Hi folks, I have an HP Proliant 140DL G2 server with what appears to be an IDE drive in non-DMA mode. Performance on the server is extremely bad when large amounts of disk activity is taking place. I think the problem is that my drive is not in DMA mode: # hdparm /dev/hda /dev/hda: multcount= 16 (on) IO_support = 0 (default 16-bit) unmaskirq= 0 (off) using_dma= 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead= 256 (on) geometry = 16383/255/63, sectors = 80026361856, start = 0 ...but I can't set it on: # hdparm -d1 /dev/hda /dev/hda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma= 0 (off) ...which I think is because the IDE controller isn't really recognized, or is pretending to be a SATA controller: # lspci -v | less 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) (prog-if 8a [Master SecP PriP]) Subsystem: Hewlett-Packard Company: Unknown device 3208 Flags: bus master, 66Mhz, medium devsel, latency 0, IRQ 193 I/O ports at unassigned I/O ports at unassigned I/O ports at unassigned I/O ports at unassigned I/O ports at 1470 [size=16] All the google hits I've seen so far imply I have to build a kernel module but I'd rather not get into the business of rolling my own kernel if I don't have to. I spun through the HP support page for this box/OS combo, and I don't see any SATA/IDE/ATA drivers, only SCSI/SAS drivers. So before I continue on, can I get a sanity check here -- am I barking up the right tree? -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpZROvMMSUZy.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] DMA mode
On Mon, Jun 02, 2008 at 06:27:55PM +0300, Linux wrote: For my cruiosity, what is your current kernel version? # uname -a Linux stargate3 2.6.9-67.0.15.EL #1 Thu May 8 10:39:19 EDT 2008 i686 i686 i386 GNU/Linux yum check-update doesn't show any available kernels, so I presume I'm current. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpm6Lk5tqZ8l.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Top Posting
On Thu, May 15, 2008 at 11:04:08AM -0700, MHR wrote: This is way OT, which we know (the Subject: line...) - can we dismiss it as beaten to death one more time and go on? :-) You must be new to the Internet. There's no such thing as too much beating for any horse, dead or not. :) -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgp8b56YqbSPB.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Irritant
On Wed, May 07, 2008 at 02:28:55PM -0400, Sam Drinkard wrote: Hi again, I've got a nagging irritant with either putty or the man pages, or perhaps my setup. If I use putty to log into my server and request any man page, it returns the page, but really important stuff like keywords are blank. Is this perhaps caused by the wrong terminal setting in putty or is there something with Centos man pages that cause this to happen? Try this: in Putty, go to Window - Translation for Received data assumed to be in which character set: select UTF-8 -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpuMU7BSaNcq.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Archive-to-DVD
[encijan ~]$ rpm -qf /usr/bin/dirsplit genisoimage-1.1.6-6.fc8 Then use growisofs. I can send you dirsplit-0.3.1-1.bob.src.rpm if you wish. Yes please, that would be useful. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpNRUgefVh2F.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Archive-to-DVD
Hi folks, Here's the situation. I have a group of engineers who love to save things to disk. Now that the filer is getting full, they are interested in archiving some of those things to DVD. The tress containing the things they want to archive are specified like so: /path/path/path/A/04?? /path/path/path/B/04?? /path/path/path/A/05?? /path/path/path/B/05?? /path/path/path/A/06?? /path/path/path/B/06?? ...and there are things in A and B which do not match the specifications. The total amount of data in this specificaiton is around 30GB, and this is not distributed equally through the specification. What I'm hoping for is a program that I can feed in directory specifications like the above, and it will produce for me DVD images (.iso files) containing these trees in such a format that when the engineers want file $X, I can give them the DVD (or the whole stack, if required) and say there you go without having to go through a restore process. I don't want something which creates it's own archive format which spans the DVDs (ie split-tar or ufsdump). I would settle for a program that produces a list of files such that I can create DVD images on my own. Does anyone have any ideas how I might go about doing this, before I roll my own solution? -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpFizkyYNGtv.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Securing SSH
On Tue, Mar 25, 2008 at 09:48:17AM -0700, Tim Alberts wrote: So I setup ssh on a server so I could do some work from home and I think the second I opened it every sorry monkey from around the world has been trying every account name imaginable to get into the system. What's a good way to deal with this? This is what I do. http://wiki.xdroop.com/space/Linux/Limited+SSH+Access -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpDF8dtEQcUQ.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Securing SSH
On Tue, Mar 25, 2008 at 11:28:45AM -0700, Tim Alberts wrote: http://wiki.xdroop.com/space/Linux/Limited+SSH+Access That sounds great for getting around a remote dynamic IP address, but some more authentication/security on that web page is necessary, otherwise, anyone who finds that web page is given access? Strictly speaking, yes; however in practice, the number of bots (or, indeed, external users who are not me) who the magic web page to hit (my actual page is not named as the example on the web page is!) before attacking the ssh connection is zero; therefore since the goal was to prevent stupid robots from brute-forcing my ssh and filling my logs, it isn't necessary. I mean, strictly speaking you'd next have to insist on a proper SSL connection to the web server, otherwise you are at risk of someone sniffing the username and password used in the .htaccess process. And then after that, you'd have to insist on some kind of security on the remote system to ensure that your passwords are not being captured. Etc, etc. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpheBd6M3mv6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen or VMWARE on CentOS 5
On Wed, Feb 27, 2008 at 08:03:09AM -0600, Les Mikesell wrote: Ern jura wrote: Does anyone out there have a comprehensive tutorial on installing VMware and successfully managing virtual machines with either xen or vmware? VMware is pretty simple: download the server rpm, install it, run the vmware-config.pl setup script to set the options and install your (free) license key. Then run vmware locally or from some other machine to access the console where you can create and start the virtual machines. Once created, you can treat the virtual machines like they were separate physical boxes except that they contend for host resources (and once they are up on the network I prefer to connect directly to them with ssh, X, freenx, or vnc instead of using the VMware console. You'll want plenty of RAM on the host machine and if you run several VM's they will perform better if you can spread them over different disk drives. With VMware you can copy your disk images over to a Windows or Mac host and run them with no changes (Mac version isn't free, though). This is pretty much what I do. I also keep stock reference images for each OS I support and copy from the reference image every time I need to deploy a new VM. I like the idea of Xen, but the documentation is a little thin especially when it comes to installing useful things like Windows VMs; I don't have the time to solve the problem properly, and I hope that in a year or two I can change this. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpkaLlpmZKGz.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] One approach to dealing with SSH brute force attacks.
On Wed, Jan 30, 2008 at 12:17:22PM -0500, Ed Donahue wrote: I use this one, works great and easy to setup http://rfxnetworks.com/bfd.php This is how I deal with them: deny by default unless you know the secret handshake. http://wiki.xdroop.com/space/Linux/Limited+SSH+Access -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgp7wY7wnhgql.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using sendmail?
On Tue, Dec 04, 2007 at 07:10:00PM -0800, Kenneth Porter wrote: What do you want to do? If you have a mailbox system that does not depend on unix users existing (the Cyrus IMAPd is such a critter, complex though it is) then Sendmail can deliver to those mailboxes. It's my understanding that sendmail doesn't deliver to mailboxes, but depends on a local mailer (the mail delivery agent, or MDA, and typically procmail) to perform that function. Strictly speaking you are correct, in the Cyrus case it is lmptd doing the actual delivery. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpOccDDhEhSe.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone using sendmail?
On Wed, Dec 05, 2007 at 09:09:40AM +0700, Fajar Priyanto wrote: Hi all, Does sendmail support virtual-non-unix-users setup? Any URL about it? I tried to ask in #sendmail channel, but nobody answered. I google around, but, all url only talks about virtual domain and mapping to unix users. What do you want to do? If you have a mailbox system that does not depend on unix users existing (the Cyrus IMAPd is such a critter, complex though it is) then Sendmail can deliver to those mailboxes. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpnrvtsgXJOg.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Bugzilla Install problems - need last mile help
On Fri, Nov 23, 2007 at 08:59:43AM -0500, Scott Ehrlich wrote: Creating database bugs... The 'bugs' database could not be created. The error returned was: Access denied for user ''@'localhost' to database 'bugs' I've seen this problem before, but I can't find my notes on it. Try creating a user [EMAIL PROTECTED] instead just creating a user bugs -- to mysql, they are different. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpHWTYOGSu36.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Large scale Postfix/Cyrus email system for 100, 000+ users
On Wed, Oct 24, 2007 at 10:38:41AM -0700, Craig White wrote: On Wed, 2007-10-24 at 21:21 +0800, Christopher Chan wrote: I thought the usual ways of doing this were to either use a high-performance NFS server (netapp filer...) and maildir format so you can run imap from any client facing server, or to keep the delivery host information in an LDAP attribute that you find when validating the address. This is the 'I have the money' way of doing this ;-) last I checked, openldap, postfix and cyrus-imapd were free. What is the money reference? Last I checked, cyrus-imapd could not provide reliable service when the datastore was on NFS. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpjRNEwkeH7o.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fetchmail log messages I don't understand
On Wed, Oct 24, 2007 at 11:46:34AM -0500, Chuck Campbell wrote: I see these messages every time fetchmail pops my mail. I don't understand what certificates it is talking about, or how to straighten this out. fetchmail: Server CommonName mismatch: localhost != mail.mydomain.com fetchmail: Server certificate verification error: self signed certificate fetchmail: Server certificate verification error: certificate has expired What do I need to read up on to understand this and find a fix? I get messages like this with my fetchmail -- the cause has been either the mail provider on the remote end is using a default, self-signed and unmaintained certificate (ie when you install Sendmail, you get some self-signed certs generated that are useless beyond the scope of your own private use); in other cases I have been referring to the computer by a name which differs from that which the certificate was created with. In this case I suspect a combination of the two. It looks like the service provider got a default cert set up with the system referring to itself as 'localhost', which is naturally different form the name 'mail.mydomain.com' which is how you are referring to it. In practice this is probably nothing to worry unduly about unless you are paying extra for verified TLS-secured mail transmission. The expired, mismatched-name cert will be used to encrypt the mail transmission just as well as a proper cert will. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpXOkaa7pFHh.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asus P5B-VM DO board?
On Fri, Oct 12, 2007 at 06:38:51PM +0200, Frank Büttner wrote: David Mackintosh schrieb: Anyone had any success with or hints for a system based on the Asus P5B-VM DO board, or the Intel Q965 (with its associated Intel GMA 3000 VGA chip) in general? Have you try it with CentOS 5? No, unfortunately this is an engineering environment where 4.x is required for compatibility with their toolset. I'm sure 5.x is in their future in the next year, but for today we need 4.x. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpSEv8DLjMf2.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Asus P5B-VM DO board?
Anyone had any success with or hints for a system based on the Asus P5B-VM DO board, or the Intel Q965 (with its associated Intel GMA 3000 VGA chip) in general? I had to put pci=nommconf in order to get the installer (CentOS 4.5) and the installed system to boot, but I can't get the graphics to work. Following the instructions at the Intel website http://www.intellinuxgraphics.org/install.html ends with a compilation error: # cd drm/linux-core/ # make make -C /lib/modules/2.6.9-55.0.9.ELsmp/source SUBDIRS=`pwd` DRMSRCDIR=`pwd` modules make[1]: Entering directory `/usr/src/kernels/2.6.9-55.0.9.EL-smp-x86_64' CC [M] /root/intel/drm/linux-core/drm_agpsupport.o In file included from /root/intel/drm/linux-core/drmP.h:168, from /root/intel/drm/linux-core/drm_agpsupport.c:34: /root/intel/drm/linux-core/drm_compat.h:114: warning: static declaration of 'kcalloc' follows non-static declaration include/linux/slab.h:103: warning: previous declaration of 'kcalloc' was here /root/intel/drm/linux-core/drm_agpsupport.c: In function `drm_agp_populate': /root/intel/drm/linux-core/drm_agpsupport.c:531: warning: implicit declaration of function `phys_to_gart' /root/intel/drm/linux-core/drm_agpsupport.c: In function `drm_agp_init_ttm': /root/intel/drm/linux-core/drm_agpsupport.c:643: error: structure has no member named `bridge' make[2]: *** [/root/intel/drm/linux-core/drm_agpsupport.o] Error 1 make[1]: *** [_module_/root/intel/drm/linux-core] Error 2 make[1]: Leaving directory `/usr/src/kernels/2.6.9-55.0.9.EL-smp-x86_64' make: *** [modules] Error 2 -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpFE5ujcPudS.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PHP5/CentosPlus big mess.
On Fri, Sep 28, 2007 at 11:15:44AM -0400, David Mackintosh wrote: Ok, so if you tuned in last time, I couldn't make the installation/upgrade of PHP5 from the Centos4 CentOS Plus repository work. Not one to be easilly dissuaded, I shapened my shovel and dug myself a hole. [...] Now, my users are complaining about errors like: [28-Sep-2007 10:32:29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/fileinfo.so' - /usr/lib/php/modules/fileinfo.so: cannot open shared object file: No such file or directory in Unknown on line 0 [28-Sep-2007 10:32:29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0 [...repeat for each file in /usr/lib/php/modules/...] However, those files are there: # ls -l /usr/lib/php/modules/fileinfo.so /usr/lib/php/modules/apc.so -rwxr-xr-x 1 root root 75652 Nov 24 2006 /usr/lib/php/modules/apc.so -rwxr-xr-x 1 root root 10580 Nov 24 2006 /usr/lib/php/modules/fileinfo.so I don't know anything about how to get php to show these errors, since the simple phpinfo.php file works (but admittedly it doesn't really do anything). Can anyone point me in the right direction, or perhaps offer me other directions in which to dig? For those who end up here as the result of an internet search: my problem in this case was that I installed i386 rpms on a x86_64 system, which explains why php couldn't load the modules even though they were there. Two long hours with yum and rpm, removing and re-installing various parts, and I have a happy user community. So honestly this problem was of my own making. Nothing to see here. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpKgQX0GvcxW.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] PHP5/CentosPlus big mess.
Ok, so if you tuned in last time, I couldn't make the installation/upgrade of PHP5 from the Centos4 CentOS Plus repository work. Not one to be easilly dissuaded, I shapened my shovel and dug myself a hole. So using the exclude= lines in the repository config file backfired big time: even if I excluded the exclude= lines, yum continued to exclude the files on those lines, and only deigned to update three php files. Thus, my user complained that the mysql pieces were not there. So what I did was install CentOS 4 fresh into a VM, update it, then I just did a: # yum --enablerepo centosplus --exclude php-pecl-ssh2 --exclude php-eaccelerator --exclude php-pear-Image-GraphViz --exclude php-pear-PHPUnit2 install php php* (see the explanations for the --excludes on http://wiki.xdroop.com/space/CentOS/4/Updating+to+PHP+5) Please with my illusion of progress, I then copied the RPMs from the local cache to my target machine, and installed them with # rpm -Uvh --nodeps --replacefiles *rpm The --nodeps was because some other package not otherwise updated depended on the previous version of php-pear, and the --replacefiles was because rpm was complaining that some file owned by mysql-4 conflicted with the mysql-5 package even though it was going to be upgraded. Now, my users are complaining about errors like: [28-Sep-2007 10:32:29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/fileinfo.so' - /usr/lib/php/modules/fileinfo.so: cannot open shared object file: No such file or directory in Unknown on line 0 [28-Sep-2007 10:32:29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0 [...repeat for each file in /usr/lib/php/modules/...] However, those files are there: # ls -l /usr/lib/php/modules/fileinfo.so /usr/lib/php/modules/apc.so -rwxr-xr-x 1 root root 75652 Nov 24 2006 /usr/lib/php/modules/apc.so -rwxr-xr-x 1 root root 10580 Nov 24 2006 /usr/lib/php/modules/fileinfo.so I don't know anything about how to get php to show these errors, since the simple phpinfo.php file works (but admittedly it doesn't really do anything). Can anyone point me in the right direction, or perhaps offer me other directions in which to dig? -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpWNmKygoCaa.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PHP5/CentosPlus big mess.
On Fri, Sep 28, 2007 at 08:39:25AM -0700, Akemi Yagi wrote: On 9/28/07, David Mackintosh [EMAIL PROTECTED] wrote: Can anyone point me in the right direction, or perhaps offer me other directions in which to dig? Would this wiki help? http://wiki.centos.org/Repositories/CentOSPlus/CentOSWebStack Sadly, that wiki entry started teh process of digging the hole -- it was from there I got the exclude= lines which I couldn't de-activate. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpQhfdu8dia6.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PHP5/CentosPlus big mess.
On Fri, Sep 28, 2007 at 12:48:23PM -0400, Ignacio Vazquez-Abrams wrote: On Fri, 2007-09-28 at 12:24 -0400, David Mackintosh wrote: Ahh, I didn't know you could ldd modules. But I still cannot see a problem: Did you run it on a system exhibiting the problem? Yes, I did. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpkS45O10VLk.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PHP5/CentosPlus big mess.
On Fri, Sep 28, 2007 at 12:18:11PM -0400, Ignacio Vazquez-Abrams wrote: On Fri, 2007-09-28 at 11:47 -0400, David Mackintosh wrote: On Fri, Sep 28, 2007 at 11:29:34AM -0400, Ignacio Vazquez-Abrams wrote: ldd is your friend. My apologies, as this must be obvious, but I am asking ldd the wrong question: But what about the modules? Ahh, I didn't know you could ldd modules. But I still cannot see a problem: # ldd /usr/lib/php/modules/fileinfo.so linux-gate.so.1 = (0xe000) libmagic.so.1 = /usr/lib/libmagic.so.1 (0xf7fb8000) libc.so.6 = /lib/tls/libc.so.6 (0xf7e8c000) libz.so.1 = /usr/lib/libz.so.1 (0xf7e7c000) /lib/ld-linux.so.2 (0x56555000) # -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpTW1ZpNwz2j.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mdadm problem.
On Tue, Sep 25, 2007 at 08:16:20PM +0200, Alain Spineux wrote: ??? you made a copy of /mnt/md1 into /mnt/md1/mnt/md1 ??? use # tar cfpl - --one-file-system . | instead I think you mean # tar cfp --one-file-system - . | ... ...but in any case -l is a soon-to-be-depreciated way of writing --one-file-system. :) -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgphMk9cDMnL5.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] remote tar via ssh
On Wed, Sep 26, 2007 at 12:22:27PM -0700, ann kok wrote: can you tell me what is the exactly command? machineA# ssh [EMAIL PROTECTED]:tar cvf / ; tar xvf * machineA# cd $WHERE-MACHINE-B-FILES-WILL-LIVE machineA# ssh [EMAIL PROTECTED] cd / ; tar cfp - . | tar xfp - Beware of following network mounted filesystems or otherwise recursing. Note that $WHERE-MACHINE-B-FILES-WILL-LIVE on machineA cannot be / since it will likely interfere with the currently running OS. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpfFRodY1cna.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] mdadm problem.
So I'm trying to RAID-1 this system which has two identical disks installed in it, and it isn't working for some reason. I started by doing a CentOS-4 install on /dev/sda1 as root, and with /dev/sda2 as my swap. I finish the install, yum update, and then I want to make the mirrors. I copy the partition table from one disk to the other: # sfdisk -d /dev/sda | sfdisk /dev/sdb I create my metadevices: # mdadm -Cv -l1 -n2 /dev/md1 /dev/sdb1 missing # mdadm -Cv -l1 -n2 /dev/md2 /dev/sdb2 missing I create my filesystems: # mkfs.ext3 /dev/md1 # mkswap /dev/md2 I change the /etc/fstab to use /dev/md1 for / and /dev/md2 for swap. I change the /etc/grub.conf to use /dev/md1 for the root= parameter on my kernel. I build myself a new initrd for the kernel I want to boot. I copy the contents of / over to the one-armed mirror: # cd / # mnt /dev/md1 /mnt/md1 # tar cfpl - . | ( cd /mnt/md1 ; tar xfp -) # umount /mnt/md1 # sync I run grub just in case: # grub device (hd0) /dev/sda root (hd0,0) setup (hd0) I reboot, expecting that the system will find /dev/md1 and use it as its root... but it doesn't. Digging around in hobbled mode (changing the root= parameter in grub to /dev/sda1 instead of /dev/md1) shows that /dev/md1 doesn't get assembled, therefore it doesn't get mounted. Can anyone tell me what I've done wrong? -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpJPbmSHZizV.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS Plus PHP5 upgrade.
Hi Folks, I have some users who have a 64-bit CentOS 4.x install (current), which was installed with @Everything and then some annoying packages strategically removed (mrtg, pegasus*, mailman...) and they have decided they have a need for php5. I find on the web this instruction for doing this: http://www.centos.org/centos/4/centosplus/Readme.txt So I try to do this, and I get: # rpm -e php-domxml # yum --enablerepo=centosplus upgrade php* [...] -- Processing Dependency: php = 4.3.9-3.22.9 for package: php-pear -- Finished Dependency Resolution Error: Missing Dependency: php = 4.3.9-3.22.9 is needed by package php-pear So I try to remove this blocking package: # rpm -e php-pear error: Failed dependencies: php-pear is needed by (installed) php-4.3.9-3.22.9.x86_64 I try to get cute: # rpm -e --force php-pear rpm: only installation, upgrading, rmsource and rmspec may be forced (Heh.) So I can't be the first person to go down this road. Can anyone provide a hint as to how to get out of the hole I've dug for myself? Thanks for your time. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpbuB07G0ghG.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS Plus PHP5 upgrade.
On Mon, Sep 24, 2007 at 01:25:21PM -0400, David Mackintosh wrote: I have some users who have a 64-bit CentOS 4.x install (current), which was installed with @Everything and then some annoying packages strategically removed (mrtg, pegasus*, mailman...) and they have decided they have a need for php5. So I browsed back through the previous day's CentOS list traffic, and I find an email that sounds suspiciously close to my problem, with advice to check out http://wiki.centos.org/Repositories/CentOSPlus/CentOSWebStack So I have followed those recommendations about the yum-priorities-plugin and now I'm in a deeper hole than I was when I started: -- Finished Dependency Resolution Error: Missing Dependency: php = 4.3.9-3.22.9 is needed by package php-pear Error: Missing Dependency: perl(:MODULE_COMPAT_5.8.8) is needed by package perl-DBD-Pg Error: Missing Dependency: perl(:MODULE_COMPAT_5.8.8) is needed by package perl-DBD-MySQL If anyone has any advice about either situation I'd appreciate it but I may have to resort to uninstalling everything and starting again. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpkPy6pp2EES.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Diskless client from system-config-netboot doesn't boot.
On Mon, Aug 20, 2007 at 10:14:51AM -0400, R P Herrold wrote: On Mon, 20 Aug 2007, Sophana wrote: David Mackintosh a écrit : I've followed a set of instructions I found on http://www.linuxtopia.org/online_books/centos_linux_guides/centos_enterprise_linux_sysadmin_guide/ch-diskless.htmli which describes using system-config-netboot to set up PXE booting. I just can say that I had the same problem with centos 4.5. Seems that centos is a little buggy on this. and which bug is that again in the centos bug tracker? I personally didn't enter a bug, as my research on the subject showed a lot of discussion in the Fedora distro as to what this tool was really supposed to be doing. It isn't included in the upstream v5 release, but is due to get re-included at a later time once things are sorted out. I think this is rather like the Xen offering -- the bare bones of a good/useful idea that needs more work before it's ready for general use. I'm sure it will be usable in the future, just not today. I have access to, but have not tried, the upstream product. If I get a chance I will and if it functions differently than the CentOS offering I will enter a bug; any other problems are more likely upstream problems. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpvJirQ0rc9h.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAID storage - SATA, SCSI, or Fibre Channel?
On Mon, Aug 20, 2007 at 04:23:49PM -0400, Scott Ehrlich wrote: I have a Dell PowerEdge 2950 and am looking to add more storage. I know a lot of factors can go into the type of answer given, but for present and future technology planning, should I look for a rack of SATA, SCSI, or fibre channel drives?Maybe I'm dating myself with fibre channel, and possibly SCSI? I may be looking to add a few TB now, and possibly more later. If you can afford the bucks, get yourself a storage appliance like the Network Appliance filer. They can do nfs much better than a generic Linux system. NetApps will give you the ability to do nfs and iSCSI-over-ethernet out of the box, and can do CIFS (ie windows SMB sharing) for an additional cost. Depending on the unit you pick they scale much more easilly and much further than a linux system can, and come with practically set-and-forget reliability and support. We've done NetApps for years, from the 700 series, 900 series, and are deploying a baby 270 with 3TB (a single shelf!) that has the potential to grow to 14TB. That said, you _pay_ for all that ability. If cost is a factor (and it rarely isn't) then this is probably more than you will want to spend. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpL1nypIXZ1P.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Justin Morgan is out of the office.
On Tue, Jun 19, 2007 at 12:48:26AM +0200, Ralph Angenendt wrote: Scott Silva wrote: Justin Morgan spake the following on 10/16/2006 11:01 AM: I will be out of the office starting 17/10/2006 and will not return until 30/10/2006. I will respond to your message when I return. Justin Morgan is probably going to be killed from the list also! How about people who respond to out-of-office-mails? vbeg ..or people who prolong these off topic threads by saying please don't prolong these off topic threads by replying to them? Oh wait, that was me. -- /\oo/\ / /()\ \ David Mackintosh | [EMAIL PROTECTED] | http://www.xdroop.com pgpxPPms2zLi7.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
