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Re: [CentOS] memory query
by Lanny Marcus 30 Jul '07

30 Jul '07

On 28 July 2007, simon wrote: > > I have recently installed centOS 5 on DELL pentium 2.7ghz (model > > optiplex GX270) and have 512 memory I received the CentOS 5.0 DVD today. ASAP, I will upgrade from 4.4. After that, I will let you know how 5.0 sees the available RAM, in the same box. The first place you need to look, is in the BIOS, to see how the box sees the RAM. If it doesn't see the RAM as available, CentOS won't either.

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Re: [CentOS] Re: SOLVED: Re: KStars on CentOS 4.4?
by Lanny Marcus 30 Jul '07

30 Jul '07

On 27 July 2007, Scott Silva wrote: >You can get Fedora 3 src rpms for Centos 4 and Fedora 6 srpms for >Centos 5. Then it can be as simple as rpmbuild --rebuild bla- >bla-.src.rpm. It can also be difficult if other dependencies creep in. >But the rpmbuild process should warn you. Scott: Thank you again! I think I have the SRC RPMS for FC3 and FC6. I will do some reading, about rpmbuild. Lanny

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incredible heartbeat 2.X depencies
by Martin Hamant 30 Jul '07

30 Jul '07

# activating extras repo # issuing "yum install heartbeat" # got : (...tons of depedencies resolution...) ttmkfdir-3.0.9-20.el4.i38 100% |=========================| 6.6 kB 00:00 ---> Package ttmkfdir.i386 0:3.0.9-20.el4 set to be updated --> Running transaction check Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: heartbeat i386 2.0.7-1.c4 extras 1.8 M Installing for dependencies: atk i386 1.8.0-2 base 170 k chkfontpath i386 1.10.0-2 base 13 k cpp i386 3.4.6-8 base 1.6 M curl i386 7.12.1-11.el4 base 230 k fontconfig i386 2.2.3-7.centos4 base 117 k fonts-xorg-base noarch 6.8.2-1.EL base 7.3 M gnutls i386 1.0.20-3.2.3 base 259 k gtk2 i386 2.4.13-22 base 4.3 M heartbeat-pils i386 2.0.7-1.c4 extras 124 k heartbeat-stonith i386 2.0.7-1.c4 extras 223 k libglade2 i386 2.4.0-5 base 91 k libidn i386 0.5.6-1 base 169 k libjpeg i386 6b-33 base 127 k libtiff i386 3.6.1-12 base 257 k nx i386 1.5.0-1.centos4 extras 2.5 M pango i386 1.6.0-9 base 271 k pygtk2 i386 2.4.0-1 base 639 k switchdesk noarch 4.0.6-3 base 13 k ttmkfdir i386 3.0.9-20.el4 base 44 k xinitrc noarch 4.0.14.3-1 base 26 k xorg-x11 i386 6.8.2-1.EL.18 base 13 M xorg-x11-Mesa-libGL i386 6.8.2-1.EL.18 base 383 k xorg-x11-Mesa-libGLU i386 6.8.2-1.EL.18 base 448 k xorg-x11-font-utils i386 6.8.2-1.EL.18 base 307 k xorg-x11-libs i386 6.8.2-1.EL.18 base 2.7 M xorg-x11-tools i386 6.8.2-1.EL.18 base 516 k xorg-x11-xauth i386 6.8.2-1.EL.18 base 284 k xorg-x11-xfs i386 6.8.2-1.EL.18 base 319 k Transaction Summary ============================================================================= Install 29 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 38 M 38Mb and xorg-x11 seems a bit too much for a "simple" heartbeat, no ? -- Martin Hamant

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Hard disk recomendation for a software raid 5 array. Does Linux Software Raid support/interacts well with TLER enabled disks.
by Alexander Georgiev 30 Jul '07

30 Jul '07

Hi people, I am building a cheap remote rsync backup server using a software raid 5 array of 4 500GB disks. What I have available on the market is: 1. HITACHI GST Deskstar T7K500 500GB 7200rpm 16MB cache Serial ATA II-300 2. SEAGATE Barracuda 7200.10 with NCQ 500GB 7200rpm 16MB cache Serial ATA II-300 3. Western Digital 500GB SATAII RAID EDITION Caviar SE16 7200rpm 8.9ms 16MB cache I am tempted to use the Western Digital Raid Edition as it has 5 years of warranty. However I found out that the "Raid Edition" means that the disk supports TLER - time limited error recovery: http://www.excelmeridiandata.com/products/wd_raid_edition_drive.shtml A more profound description can be found here http://www.wdc.com/en/library/sata/2579-001098.pdf. In summary, the error recovery time of the hard disk is reduced to 8 second. If the hard disk cannot perform the recovery it will report an error to the RAID controller and delegate the recovery to the controller. As I intend to use linux software raid on Centos 5, I will not have a RAID controller to deal with this delegated error, but two cheap I/O SATA controllers. Has anybody used 'raid edition' disks with software raid? Does anybody know how linux software raid interacts/supports these TLER disks. Best regards Alex

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MRTG with 14all.cgi on centos 5
by Indunil Jayasooriya 30 Jul '07

30 Jul '07

Hi, I installed mrtg on centos5 with 14all.cgi script. I downloaded it from below URL. http://my14all.sourceforge.net/14all-1.1.txt and copies it as 14all.cgi @ /var/www/cg-bin I made a few changes to the script. Those changes can be seen in BOLDletteres. # if MRTG_lib.pm (from mrtg) is not in the module search path (@INC) # uncomment the following line and change the path appropriatly: #use lib qw(/usr/local/mrtg-2/lib/mrtg2); use lib qw(/usr/lib/mrtg2); # if RRDs (rrdtool perl module) is not in the module search path (@INC) # uncomment the following line and change the path appropriatly # or use a LibAdd: setting in the config file #use lib qw(/usr/local/rrdtool-1.0.38/lib/perl); use lib qw(/usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi); ### where the mrtg.cfg file is # anywhere in the filespace #$cfgfile = '/home/mrtg/mrtg.cfg'; #$cfgfile = '/etc/mrtg/mrtg.cfg'; # relative to the script $cfgfile = ' mrtg.cfg'; # use this so 14all.cgi gets the cfgfile name from the script name #(14all.cgi -> 14all.cfg) #$cfgfile = 'mrtg.cfg'; It works fine. But When this server comes up , after rebooting, the traffic of the First graph (i.e Daily' graph (5 Minute Average) goes up, both incoming and outgoing traffic go up to 50-60 Mbits per secrond. This happened, Whenever the system comes up after a reboot. Any idea to solve this issue? Unless it reboots, It works fine. Also, I want to know, Where is this mtrg date stored? I want to back up data. If the system crashes one day, then, I will be able to retrieve it. -- Thank you Indunil Jayasooriya

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Re: [CentOS] Mixing RPMforge and EPEL (Was: EPEL repo)
by Lanny Marcus 30 Jul '07

30 Jul '07

On 28 July 2007, Dag Wieers wrote: <snip> > Let me add that an effort to make sure EPEL is compatible with > RPMforge failed as EPEL wants to become the only repository for RHEL > and there is no interest to consider current RPMforge users. > > EPEL refused the repotag, so one cannot easily identify where a > package comes from and mixing repositories becomes harder. Since > compatibility is a 2 way interaction and EPEL shows no interest, it is > certain that mixing EPEL with other repositories may break something. <snip> Dag: I hope you will consider rewriting that post to the ML and putting it into the CentOS Wiki. Rewriting may not be necessary. Your post was pretty explicit and very informative. IMHO, it will be a great addition to the Repository Wiki. Lanny

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CentOS 3.9's up2date missing sources???
by Lawrence Houston 29 Jul '07

29 Jul '07

CentOS3.9 Users: After applying all Updates to Upgrade from CentOS 3.8 CentOS 3.9 I find up2date no longer works "correctly" (or shall I say NOT as before)... Missing is the "sources" File!!! Is this how V 4.5.5-7 is supposed to be or is the "sources" File omission an "error"??? Lawrence Houston -- (centos(a)greenfield.dyndns.org)

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Unsubscribe Me Please
by Robert J. Thompson 29 Jul '07

29 Jul '07

Please unsubscribe me from the Centos mailing list.

2 1

typo on a Wiki page
by Lanny Marcus 29 Jul '07

29 Jul '07

I don't know the correct way to get this into the system, so I'm posting here. On this page: http://wiki.centos.org/PackageManagement/Yum/Priorities a line begins: Some packages specify obsoletes in their metadata. This property of a packages that should be "This property of a package" not packages, singular. An incredibly minor error, on an extremely helpful Wiki page. Lanny

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Higher memory requirements for 64 bit?
by Steve Bergman 29 Jul '07

29 Jul '07

I have a dual Xeon 3.2GHz XDMCP server serving out about 50 Gnome desktops to thin clients. I currently am running 32 bit with 4GB of memory. Performance is fine, normally, and the machine runs with about 3GB in swap. However, if a user app suddenly sucks up the maximum allowed rss and virtual or 256MB/process as specified by ulimit, the resulting swap drags the machine down to the point that people think it is locked up. I have another 4GB of memory on order. But I suspect that part of the problem may be running out of memory in zone-normal, which I know will cause swap storms. (An oops in the log file suggests that is where memory was tight.) I had low memory protection set to 150MB, and have increased that to 256MB. (I had to increase it to at least 135MB previously, else dd if=/dev/zero of=/tempfile.tmp would start a swap storm that would bring the machine to its knees.) More users will be added to this machine, and I am worried about having an ever higher percentage of this (16GB maximum) machine in zone high. So I am considering moving it from 32 bit CentOS4 to 64 bit CentOS5 or 64 bit Fedora 7. But a cursory test of the 32 and 64 bit versions of firefox suggest to me that, just opening them up and going to google.com, the 64 bit version uses about 50% more memory than the 32 bit version. Could someone please comment on how much of an additional memory hit I might expect? The VM risks and benefits that I might be taking? Really, *any* commentary about this scenario would be appreciated. Thanks, Steve Bergman

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