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34753 discussions

I/o Read/write BYTes ?
by Roland Roland 14 Dec '09

14 Dec '09

Hello, is there a way to detect the r/w i/o bytes on a hdd under centos? i know i can do it through task manager under windows though what about centos through cli ? any advice?

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Deleting contents of /tmp on shutdown
by Thomas Dukes 14 Dec '09

14 Dec '09

I use to have a line of code in /etc/init.d/syslog (I think this was the file) to delete the contents of my /tmp directory on shutdown. It originally came from fedora. I have searched for it but can't find it again. Anyone happen to have it? TIA

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Empty /var/log/messages
by onay 14 Dec '09

14 Dec '09

Hi all, I don't know if anybody already ask this question. Sorry if I repost it again. I googling already, but don't find any clue. I'm using centos 5.3, but why the /var/log/messages is empty. Even the sylogd daemon is run. Me already compare /etc/syslog.conf with another centos machine. The /etc/syslog.conf is same. Anybody know what happen? Many thanks. -- If knowledge belong to the world, why don't you give me some?

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XFS and LVM2 (possibly in the scenario of snapshots)
by Timo Schoeler 13 Dec '09

13 Dec '09

Hi list, during the last days there was a discussion going on about the stability of XFS; though I myself used XFS heavily and didn't run into issues yet, I'd like to ask something *before* we create our next generation data storage backend... Les Mikesell wrote in [0] about issues in the combination of XFS and LVM -- however, it was being discussed in context of using 32bit kernels. What I specifically need is to run XFS (or something similar, I am *not* forced to use XFS, but it was my preference for some years now, and I didn't have any issues with it yet) on top of LVM to be able to create snapshots. We're talking about several file systems of a size at about 4TiByte each. On another place [1] I read that there were issues with that. Can anyone shed some light on this? Would be very appreciated. Regards, Timo [0] -- http://lists.centos.org/pipermail/centos/2009-December/086850.html [1] -- http://www.paragon-cs.com/wordpress/?p=67

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CentOS 5.4 - Problem with Enumeration of NICs
by Miguel Medalha 13 Dec '09

13 Dec '09

I just made a new CentOS 5.4 installation. The machine has an Intel 10/100 and an Intel GB on board, and a Broadcom GB card on a PCI-X (64 bit) slot. After the install finished, I noticed that the order and naming of the Ethernet interfaces is totally screwed up. Under Network Manager, the Intel GB card shows the MAC address of the Broadcom and vice-versa. As a consequence, none of them works. When I push the Probe button, they show each other's MAC Adress. The names of the devices do not correspond to the names of the interfaces. If I correct the problem by manually editing the configuration files, they MAY get wrong again upon reboot. Only the 10/100 interface stays put. After a remote reboot for kernel update, I just lost connection with the machine, so I guess it happened again. This NEVER happened with CentOS 5.2 or 5.3 on the same machine. I want to manually assign a ID to the cards and let them keep it forever. Will the manual entry of the HWADDR=/ /parameter in the ifcfg-eth<x> files fix this for good or will it be overrided by some other component of the OS? Thank you.

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moving from live partitions to raid1 on an eserver
by David Milholen 13 Dec '09

13 Dec '09

I have a qtp (qmail toaster plus) machine on an ibm 326 eserver that has 2 sata 250GB drives. The problem I have is that when the Os was installed I thought I had hardware raid on but to my avail the Os assumed to drives an installed accordingly. Here is what df has for the partitions. # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sdb1 240362656 17843040 210309816 8% / /dev/sda1 101086 11843 84024 13% /boot none 2047316 0 2047316 0% /dev/shm I need a raid in place on this machine. This is a live machine but I do have a lab machine to break. I really need to move this in a live fashion without losing the data of course I have complete backups to start a new if need be but it would be nice to be able to make the change and have raid1 in place to have a some better redundancy. I guess what I am asking what are the basic steps and what warnings to look for? Thanks --Dave

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How do I link to custom libs without affecting system libs (LD_LIBRARY_PATH)
by Chris Morley 12 Dec '09

12 Dec '09

Hi, i am getting an issue with rtorrent that is related to my curl libaries. In summary it requires a later curl libary than CentOS 5.4 uses for its system files (CentOS uses curl libs version 7.15.5, rtorrent requires 7.19.2 or greater). To get around this I would like to download the latest curl version and compile and link to rtorrent without affecting system files. How can i statically link the latest Curl libs to my rtorrent build? I belive its to do with LD_LIBRARY_PATH but i am not sure howto proceed: wget http://curl.haxx.se/download/curl-7.19.7.tar.gz cd curl-7.19.7./configuremakemake install The above make install would overwrite or upgrade the existing curl, worried about breaking existing system! Many thanks in advance, Chris _________________________________________________________________ View your other email accounts from your Hotmail inbox. Add them now. http://clk.atdmt.com/UKM/go/186394592/direct/01/

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Recommend Mail Server
by Susan Day 12 Dec '09

12 Dec '09

Hi; I don't want sendmail. What's a good secure email server that I can yum? I really only need smtp right now, but who knows what the future will bring? TIA, Suzie

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Assorted RPMS for Centos 5
by Frank Cox 11 Dec '09

11 Dec '09

In case this is useful to anyone else: http://www.melvilletheatre.com/articles/el5/index.html -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

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ntop from rpmforge
by Ausmus, Matt 11 Dec '09

11 Dec '09

I don't know why I haven't signed up for this list before since we use CentOS all over the place. The list is very useful and it is good for me to participate and "give back" to the community. Anywho, I wanted to post this response to a thread that was created back in November 2008 about the ntop daemon failing to start. I'm currently setting up ntop as a NetFlow & SFlow collector and came across the issue. A quick refresher, the init script for ntop has an issue where it can't parse the ntop.conf file correctly if switches are entered before the "@/etc/ntop.conf". The suggested work around was to move the "-d -L" switches from in front of the "@/etc/ntop.conf" and put them behind it. This is definitely the fix. There is a caveat to that and I haven't found anyone that has mentioned it so I thought I would. According to the documentation, if you add the switches after the "@/etc/ntop.conf" those will override the configurations in the ntop.conf file. While this isn't an issue with the "-d" option, if you decide to use a custom syslog level and add it to the conf file, the "-L" switch after the conf file will override your custom log facility. In my init file I left the "-d" but removed the "-L" expecting me to put my own syslog entry in the conf file. ____________________________ Matt Ausmus Network Administrator Chapman University 635 West Palm Street Orange, CA 92868 (714)628-2738 mausmus(a)chapman.edu <mailto:mausmus@chapman.edu> "Man will occasionally stumble over the truth, but most of the time he will pick himself up and continue on." - Churchill's Commentary on Man

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