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Re: [CentOS] New installation woes
by Vandaman 19 Nov '08

19 Nov '08

Steve Huff wrote: > On Nov 19, 2008, at 10:57 AM, Vandaman wrote: > > > What is the bug? It does not appear in the site you > linked to. > > It would be surprising if Red Hat are unaware of > upstream changes > > as one would expect it to be rolled out into Fedora > rawhide at least > > even if the changes are backported int RHEL. > > > we went over this last month: > > http://lists.centos.org/pipermail/centos/2008-October/065972.html > http://lists.centos.org/pipermail/centos/2008-October/066185.html > > and also on the rpmforge users list: > > http://lists.rpmforge.net/pipermail/users/2008-October/001973.html > > you were on the CentOS list then, i'm surprised you > don't remember. please search the archives before > posting; what you said has nothing to do with the issue. > Seems a little impertinent what our learned friend Steve Huff has sent to me off-list in a huff :- - I was subscribed for a few days last month. - Many of us don't do "just CentOS". We have other mailing lists and OS's installed. We also happen to have lives as well to live. - Even this month when I'm subscribed fulltime to the list, I don't read all messages on the list (nuff' said). - What is posted on the list is "not Gospel". If something affects all CentOS users, perhaps a prominent announcement could be made on the website or somewhere. - I'm sure there are issues other than the Debian Openssl bug that affect all CentOS users. Regards, Vandaman.

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Promise EX16650 under 5.2?
by Gordon McLellan 19 Nov '08

19 Nov '08

Does anyone have experience using the Supertrak EX16650 sas controller under Centos 5.2? The Promise website claims RHEL 5.2 support was added Sept '08. I figure the card might very well be detected, but how about the management gui - it appears to use some sort of web interface, but the card has no ethernet jack, so it must rely on some special driver to access this? Any information is appreciated. I'm not finding much under google regarding this card and redhat (or centos), so either it's rather new, or unpopular, or just doesn't have problems so no one complains? Thanks, Gordon.

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noauto option ignored in CentOS 5.1?
by nate 19 Nov '08

19 Nov '08

I have worked quite a bit with CentOS 4.x with SAN, multipathing, LVM etc. The way I mount my file systems is using a script that is called during startup that runs fsck, imports the physical volumes, and volume groups, activates the logical volumes, creates the mount point if needed then mounts the volume, I mainly made it for software iSCSI due to the iscsi stack loading after the system mount process. I adapted it to my fiber channel systems as well and it worked great(mainly so I could have a consistent experience between FC and iSCSI). In testing with CentOS 5.1 it seems that my entries in /etc/fstab that are marked "noauto" are still infact queried when the system boots (before multipathing, etc fires up). These devices don't exist at the time which causes the boot to halt(so I can fsck the file system manually). I have worked around it by commenting out the line in fstab, and just adjusting my script to look for the commented line, but this never happened under CentOS 4.x, seems like a bug ? I peeked at Red Hat's bugzilla but didn't see much. If so I can file one.. thanks nate

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L2ARC (disk caching) for Linux?
by Ray Van Dolson 19 Nov '08

19 Nov '08

First off; are there any storage-centric mailing lists that target Linux specifically? Secondly, I'm wondering if there's anything in the works or already out there similar to Sun's L2ARC[1] for ZFS. Basically this is a filesystem (or maybe lower-level) cache for reads, writes that can be comprised of faster media like SSD. I think it could make SATA-based JBOD solutions a lot more attractive from a performance perspective. Anything out there along these lines already or suggestions on a better place to dig for information? Ray [1] http://blogs.sun.com/brendan/entry/test

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New installation woes
by Sam Drinkard 19 Nov '08

19 Nov '08

I've just installed CentOS 5.2 for the x86_64 on a SuperMicro X6DA8-G board with two 250g SATA drives configured in the bios as a raid 1 array. After getting the base installed, I've tried to yum update the system and I wind up with these errors.... --> Finished Dependency Resolution Error: Missing Dependency: libmysqlclient.so.14(libmysqlclient_14)(64bit) is needed by package perl-DBD-mysql Error: Missing Dependency: libgsf-1.so.1()(64bit) is needed by package libwpd Error: Missing Dependency: libneon.so.24()(64bit) is needed by package subversion Error: Missing Dependency: libaprutil-0.so.0()(64bit) is needed by package subversion Error: Missing Dependency: libpq.so.3()(64bit) is needed by package perl-DBD-Pg Error: Missing Dependency: libapr-0.so.0()(64bit) is needed by package subversion Error: Missing Dependency: libevent-1.1a.so.1()(64bit) is needed by package nfs-utils Error: Missing Dependency: libmysqlclient.so.14()(64bit) is needed by package perl-DBD-mysql I'd like to think that out of the box centos would at least update without a bunch of missing dependencies. Any pointers as to what the best solution is? Thanks.. Sam

7 9

CentOS 5.2 with IBM SERVERAID 6i
by miguelmedalha＠sapo.pt 19 Nov '08

19 Nov '08

I need to install CentOS 5.2 on a IBM Server xSeries 226, which comes with a IBM SERVERAID 6i RAID card. I think it is not a true hardware RAID card. I has, nevertheless, an interesting feature: 128MB of cache with battery backup. I launched the CentOS boot DVD and CentOS correctly identified the card and the RAID 5 array as configured by the controller's BIOS. My question now is: what would be the better way to implement RAID 5 on this server? Should I use the detected array and respective driver or should I delete the array and go for Linus Software RAID? If both solutions are in fact Software RAID, is there any particular reason to prefer one of the methods? I know that Linux RAID will create a universal, more compatible array, readable on any Linux machine. But is there some other reason that makes it preferrable to use the SERVERAID driver provided by CentOS? Is it optimized in any way that recommends its use? Will the controller still make use of its cache and battery backup if configured as a plain SCSI controller with Linux Software RAID? I hope that some more experienced list member can ellucidate me on this. Thank you! PS - The machine is powered by a Intel P4 Xeon processor served by 2.5GB of RAM. The disks are 3 IBM 10K rpm SCSI 320 with 73 GB each.

10 13

kickstart install on SAN with multipath
by nate 19 Nov '08

19 Nov '08

Using CentOS 5.1, though with a few hours work I could update to 5.2.. I can install to SAN with a single path no problem but I'd like to be able to use dm-multipath. From the kickstart docs it seems this is supported but there is no information as to what the various options mean http://www.centos.org/docs/5/html/5.1/Installation_Guide/s1-kickstart2-opti… -- multipath (optional) multipath --name= --device= --rule= -- I have a multipath.conf which works fine when I install to local disk, I'm not sure what I should put in the options above, perhaps something like multipath --name=mpath0 --device=sda --device=sdb --rule= ??? Done tons of searches and can't find anything. Any idea what "rule" would map to in multipath.conf ? I've even installed the anaconda package and grepped through the code and can't find anything useful. thanks nate

2 2

nagios-plugins 1.4.13?
by Marcelo M. Garcia 19 Nov '08

19 Nov '08

Hi Does anyone knows when nagios-plugins 1.4.13 will be available? Thanks Marcelo

4 5

net-snmp puzzle
by drew einhorn 19 Nov '08

19 Nov '08

I have a bunch of centos 5.2 boxes. I'm trying to run smtp on all of them. Using indentical net-snmp configuration files. /etc/snmp/snmpd.conf com2sec notConfigUser localhost smssnmp com2sec notConfigUser 10.1.1.0/24 smssnmp group notConfigGroup v1 notConfigUser group notConfigGroup v2c notConfigUser view systemview included .1 access notConfigGroup "" any noauth exact systemview none none syslocation SMS - North Carolina syscontact drew.einhorn(a)gmail.com pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat I came up with this config file by tweaking some examples from howto docs on the web, I have not gotten to them point where I feel like I really understand it as well as I should. On some boxes it just works On some boxes it complains with: Nov 19 01:15:08 s1s0105 snmpd[7073]: /etc/snmp/snmpd.conf: line 1: Error: bad source address Nov 19 01:15:08 s1s0105 snmpd[7073]: net-snmp: 1 error(s) in config file(s) Nov 19 01:15:08 s1s0105 snmpd[7073]: NET-SNMP version 5.3.1 But it works anyway. On other boxes, it complains with: Nov 19 10:55:03 s1s0106 snmpd[22621]: Warning: no access control information configured. It's unlikely this agent can serve any useful purpose in this state. Run "snmpconf -g basic_setup" to help you configure the snmpd.conf file for this agent. Nov 19 10:55:03 s1s0106 snmpd[22621]: NET-SNMP version 5.3.1 And does not work. Fooling around with snmpconf leads to much different config files but they don't work any better. Any ideas? -- Drew Einhorn

1 0

Clean serial console setup when using an USB to serial converter
by David Knecht 19 Nov '08

19 Nov '08

Hello all, I'd like to connect to a CentOS 5.2 system's console through a null-modem cable. An USB to serial converter is connected to that system's USB port. When using this configuration statement in "/etc/inittab"... ... # Run gettys on serial line (that is, a serial line connected to USB0) usb0:12345:respawn:/sbin/agetty -L ttyUSB0 9600 vt100 ... ...I get these messages if (and only if) the converter is *not* connected to the system (thus, if no ttyUSB0 device has been dynamically created): Nov 18 15:58:41 anyvizor init: Id "usb0" respawning too fast: disabled for 5 minutes Nov 18 16:05:22 anyvizor init: Id "usb0" respawning too fast: disabled for 5 minutes Nov 18 16:12:03 anyvizor init: Id "usb0" respawning too fast: disabled for 5 minutes Apart from that, connectivity to the serially attached console works fine of the serial line is connected. Obviously, I would like to have a clean setup without any errors where this kind of console setup works like a charm. As a workaround (since I did not get any further on an inittab-based solution), I tried to configure udev to spawn "/sbin/agetty -L ttyUSB0 9600 vt100" once the converter gets connected. This is my udev configuration: [root@anyvizor rules.d]# pwd /etc/udev/rules.d [root@anyvizor rules.d]# cat 10-custom.rules BUS=="usb", KERNEL=="ttyUSB*" SYMLINK+="usb_attached_console" SUBSYSTEM=="usb_device", ACTION=="add", RUN+="/etc/udev/scripts/respawn_usb_attached_console.sh" [root@anyvizor rules.d]# [root@anyvizor scripts]# pwd /etc/udev/scripts [root@anyvizor scripts]# cat respawn_usb_attached_console.sh #!/bin/env sh getty_command_line="/sbin/agetty -L usb_attached_console 9600 vt100" while [[ -e /dev/usb_attached_console && $(/usr/bin/pgrep -xf "${getty_command_line}" | /usr/bin/wc --lines) -eq 0 ]] do eval "${getty_command_line}" done [root@anyvizor scripts]# Again, connectivity to the serially attached console works fine once the system is up and running. However, the system does not pass the Starting udev... message displayed on the console (here, I mean the normal console screen, not the serially attached console) if (and only if) the USB to serial converter is connected when booting. The boot process continues fine once the converter gets disconnected. Any hints for an inittab-based as well as an udev-based solution (or another concept to achieve the same result) is very welcome! Thanks, David

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