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by MBernha＠bart.gov 23 Oct '07

23 Oct '07

I am forwarding this exchange from the BIND 9 list (I posted the question) because it seems relevant. any comment on this? Is it for the North American Linux Distributor to fix, or is it something the CentOS folks can do? > When my 64-bit Centos5 machine boots up, I see the following messages: > process `rndc' is using obsolete setsockopt SO_BSDCOMPAT process > `named' is using obsolete setsockopt SO_BSDCOMPAT This is an unfortunate linuxism. The kernel people put this warning in, but left SO_BSDCOMPAT defined in their header files, so you can't get around it by using #ifdef SO_BSDCOMPAT. BIND 9 has a linux kernel version check that's supposed to prevent it from setting that socket option on kernels that don't need it... but I guess it doesn't work on CentOS5, I've no idea why not. The proper fix would be for the linux people to stop issuing this warning in production kernels. In the meantime, you can shut it up by editing lib/isc/unix/socket.c and changing the function clear_bsdcompat() so it always sets bsdcompat to ISC_FALSE.

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restrict network access
by Arne Pelka 22 Oct '07

22 Oct '07

Hi, I have two pc using centos 4, these machines need only access to the (big, class b) local network. Because of security reasons the network access should be restricted to this local network - mainly the users of these pc should not be able to access webpages outside of the local network. My problem is, that I have no own centos repository and therefore these two pc need access to the centos mirrors to get updates. What would be the best way to restrict the network access to the local network and allow the access to some external addresses (a centos mirror and maybe some other servers/websites). I was thinking about iptables but I'm not very experienced in this questions - maybe there is an easier way. The configuration with iptables seems to be very complex, I was skimming through some tutorials and the man pages. In thanks and with best reagrds, Arne

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how does one remove bond1?
by J. Potter 22 Oct '07

22 Oct '07

Hi List, We're using bonding to create bond0 with 2 NICs, and noticing that CentOS 5 2.6.18-8.1.14.el5 (and presumably older) creates bond1 as well. I'd like to remove bond1 from the system, so that our monitoring scripts don't pick it up, except for those machines that actually do have a bond1. So... how does one remove bond1? Thanks! Misc info below of configuration and what doesn't work. best, Jeff % cat /etc/modprobe.conf | grep bond alias bond0 bonding options bond0 max_bonds=2 miimon=100 mode=1 % find /etc/ -iname "*bond1*" | wc -l 0 % grep -r bond1 /etc/ 2> /dev/null | wc -l 0 % cat /sys/class/net/bonding_masters bond0 bond1 % echo "bond0" > /sys/class/net/bonding_masters -bash: echo: write error: Operation not permitted % id uid=0(root) gid=0(root) ...

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Monitoring through SNMP
by Centos 22 Oct '07

22 Oct '07

Hello I have dell servers and just want to install its MIBs so I can monitor them through snmpwalk. is copying MIBs to /usr/share/snmp/mibs enough ? all MIBS in /usr/share/snmp/mibs has .txt extensions. should change the extension as well ? Thanks

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Software RAID: on same IDE port or on different ones?
by Kai Schaetzl 22 Oct '07

22 Oct '07

I have a general question on software RAID performance. If using two IDE disks on RAID 1: is there much of a difference performancewise if I put both on one IDE port as master and slave or should I better put them on seperate ports. I remember from olde days that it was recommended to put CD and hard disk on different ports to maximize the throughput between them and as RAID1 is theoretically writing to both disks at the same time I guess putting them on different ports might be an advantage. Is it one or is it negligible? Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com

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C5 i386 DVD boot problems
by Scott Ehrlich 22 Oct '07

22 Oct '07

I tried to boot from two different CentOS 5 DVDs, both pass the checksum test, and both give me the same error on a Dell laptop from either GUI or text install modes: invalid compressed format (err=2) VFS: Cannot open root device "<NULL>" or unknown-block(253,0) Please append a correct "root=" boot option Kernel panic... I did some google searching and learned other people have had the same problem, but no resolutions were ever posted. I'm downloading the CD version and will see if that makes any difference. Assuming it won't make a difference, how do I resolve this so I can get CentOS installed on the system? Thanks. Scott

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Centos 5.0 Intel G33/P35 Chipset Support (Asus P5K-VM, P5KC)
by Michael Rock 22 Oct '07

22 Oct '07

> You might want to check out these threads: > http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&topic_id=95… > and > http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&topic_id=96… > > Akemi I do see the DVD image on David Hrbáè's website which I believe is in Czechoslovakia. But was asking whether there is a CD version and are the updates on any the mirrors? I suppose worse case scenario is he has all the fixes is dealing with the download time, buying a DVD drive, blank DVDs and reinstalling both boxes from scratch with them. Not the best case and was hoping to avoid that. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Centos 5.0 Intel G33/P35 Chipset Support (Asus P5K-VM, P5KC)
by Michael Rock 22 Oct '07

22 Oct '07

I have 2 new boxes that I cannot use yet because of problems supporting these newer chipsets in 5.1. Does anyone know when the CD version of 5.0 x86-64 that has support for these chipsets be available on any on a Centos mirror? Has the support for these chipsets been added to yum yet? Here are my latest results with these chipsets and Centos 5.1 1. Asus P5K, E6850, P35 Chipset: Does not boot or install without "acpi=off all-generic-ide irqpoll nommconf" Also, when it does boot it does not recognize LAN and video hangs loading gnome. I tried install the Asus Linux driver for the mobo but 'make install' produces error that kernel sources cannot be found. 2. Asus P5K-VM, Q6600, G33 chipset: Installs and boots as long as "acpi=off" switch used. But I understand this disables multi-core support. LAN and video are working. thx -- Mike __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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freenx problem with the most recent updates
by Joachim Backes 22 Oct '07

22 Oct '07

When running "yum update" on monday, oct 22, I get the following conflicts: Transaction Check Error: file /etc/nxserver/node.conf.sample from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxkeygen from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxloadconfig from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxnode from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxprint from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxserver from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos file /usr/bin/nxsetup from install of freenx-0.7.1-1.el5.centos conflicts with file from package freenx-0.6.0-12.el5.centos Known? Regards -- Joachim Backes <joachim.backes(a)rhrk.uni-kl.de> University of Kaiserslautern,Computer Center [RHRK], Systems and Operations, High Performance Computing, D-67653 Kaiserslautern, PO Box 3049, Germany -------------------------------------------------- Phone: +49-631-205-2438, FAX: +49-631-205-3056 http://hlrwm.rhrk.uni-kl.de/home/staff/backes.html

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Re: [CentOS] /etc/yum/pluginconf.d/prioriti es.conf file disappeared
by Lanny Marcus 22 Oct '07

22 Oct '07

>Message: 6 >On 21 October 2007, Johnny Hughes <johnny(a)centos.org> wrote: >That file does not change often from the default ... you can get the >default version by downloading the RPM in question and using this >command in the directory where you put it: >rpm2cpio yum-priorities-1.0.4-2.el5.centos.noarch.rpm | cpio -idv >After that, there will be a bunch of files in that same directory ... >which are the default files that get installed. >That file should be one of them, andat ><tempdir>/etc/yum/pluginconf.d/priorities.conf Johnny: THANK YOU for the above information. It's a minor problem, but, what bothers me is that I do *not* think that I deleted that file by accident. I think it disappeared by itself, which, if true, would be troubling. However, I'm open to the possibility that somehow, I deleted it, accidentally. And, a very special THANK YOU, for all of the time and work you put into CentOS! -- Lanny

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