Discuss April 2010

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Centos v3.3 CD 2
by Luis-Miguel Astudillo 15 Nov '11

15 Nov '11

Sorry, I have been away for a while. has anyone fixed CD2 fotr CentOS v3.3 ? -- Luis

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Lingering dhclient issue
by Alfred von Campe 22 Jun '11

22 Jun '11

I recently reconfigured some CentOS 4.3 systems that were using DHCP to use static IP addresses. At the same time, the systems were moved to a new VLAN. Here is the approximate sequence of events that took place: 1. ifdown eth0 2. edit /etc/sysconfig/network-scripts/ifcfg-eth0 with static IP address 3. wait for network folks to reconfigure switch 4. ifup eth0 I may have reversed steps 1 and 2 on some of the systems. The problem was that the dhclient process didn't go away, and kept renewing the old lease. Our DHCP server is configured to contact the DNS server and update the entry for each host it serves. So the DNS entries for these systems were pointing to the old address in the old VLAN. The eth0 interface itself just kept the static IP address for which it was configured. It took me a while to figure out what was going on. My question is, what could I have done to avoid this (other than killing the dhclient process)? Is there a better way to reconfigure an interface to use a static address? I am not interested in solutions that involve using a GUI (i.e., only command line solutions). Thanks, Alfred

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what pkg contains libstdc++-libc6.2-2.so.3
by Fong Vang 02 Feb '11

02 Feb '11

In CentOS 4.1/2, what package contains this library: libstdc++-libc6.2-2.so.3? I installed a couple of the compat- packages, but this library is still missing.

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gdm_slave_xioerror_handler problem
by sync 07 Jan '11

07 Jan '11

Hi , guys: Today , I work on my laptop which uses the CentOS x86_64 operating system , Suddenly the X-windows restarts when left at the login screen for more than a few seconds. The error in my syslog is: Apr 12 15:26:45 localhost gdm[2892]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0 This message came up serval times previously ~ Any other help would be nice. Thanks in advance ~

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good centos/rhel source for latest spamassassin?
by Eero Volotinen 11 Aug '10

11 Aug '10

Is there any good rpm source for latest spamassassin for centos/rhel ? Currently using from dag's, but is is a bit old version nowdays. -- Eero

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compilers a security risk?
by Dave Stevens 21 Jul '10

21 Jul '10

I manage a web hosting server that we've recently upgraded, in part so we could accommodate a domain that will enable community mapping. In a recent exchange of mails one developer said: "I could build the package directly on the server machine you have, provided that the potential security risk posed by having compilers installed is not an issue." and another said: "What sort of security risk is there in having compilers installed on a working server? "Obviously we can remove the compilers, however when Mapserver or postgis get updated, we will need to build new packages somewhere. One option: create a second VM for mapchat. We'll put the build environment on it, and only turn it on to make new packages." I don't have enough experience to assess the security issues. Does anyone have an opinion on this? It would be simple and feasible to allocate another domain as suggested above. Dave -- "It is no measure of health to be well adjusted to a profoundly sick society." Krishnamurti

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Monitor Network Traffic
by sadas sadas 11 Jun '10

11 Jun '10

What is the best way to monitor the total incoming / outcoming network traffic of CentOS server. I think that the solution is to monitor the network interfaces and to send SNMP packets to remote server. But is it possible? regards

6 8

Shutdown/poweroff does not power off machine
by Scot P. Floess 02 Jun '10

02 Jun '10

I've got a Dell Optiplex GX240 I am running CentOS 5.4 (kernel 2.6.18-164.9.1.el5.centos.plus)... When I had Fedora 11 and 12 on it, I could issue a poweroff command and the machine would power itself off. However, under CentOS it doesn't turn the machine off whatsoever. When it completes, the machine is still running with a message of "system halted." Then I have to physically hit the power button to turn it off... I believe at some point I did try to issue a shutdown command - but had the same results... Anyone have any recommendations or suggestions? Thanks ahead of time :) Scot P. Floess 27 Lake Royale Louisburg, NC 27549 252-478-8087 (Home) 919-890-8117 (Work) Chief Architect JPlate http://sourceforge.net/projects/jplate Chief Architect JavaPIM http://sourceforge.net/projects/javapim Architect Keros http://sourceforge.net/projects/keros

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Building an install disk on a USB key, solved
by m.roth＠5-cent.us 24 May '10

24 May '10

Ok, there's been discussion, including, I think, on the wiki web page, that syslinux is not correct. At any rate, after enough experimentation, I have a working install on a USB key. The procedure is: Using fdisk, partition your key: one partition, VFAT (type b, and toggle the bootable flag), about 9M or 10M, and a second partition big enough to hold a DVD. That should be type 83 (Linux native). mkfs -t vfat <the DOS partition) mkfs <the Linux partition liveCD-iso-to-disk <.iso, w/ full path> /dev/<USB DOS partition> mount <USB Linux partition> /mnt cp <CentOS.iso> /mnt/ You're done. You do have to tell it "install from hard disk", and then point it to the Linux partition. I just did this and tested it (or at least as far as the "searching for existing CentOS installations). mark

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Bug in freeradius 1.1.3-1.5.el5_4 rpm
by Ian Forde 22 May '10

22 May '10

I upgraded one of my servers to CentOS 5.4 today. The freeradius service (radiusd) didn't start up due to permissions errors. I tracked it to the permissions on the /etc/raddb/certs/ directory being set to 640 rather than 750, so the radius user couldn't enter the directory. In the spec file from the source rpm, line 200 should read: %attr(750,root,radiusd) %config (noreplace) /etc/raddb/certs rather than the current: %attr(640,root,radiusd) %config (noreplace) /etc/raddb/certs Note that this bug also exists in the the 1.1.3-1.4.el5 version that's part of the CentOS 5.4 release. I'm not sure if it exists upstream though, but there it is... ;) -I

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Discuss April 2010