Discuss December 2009

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295 participants
271 discussions

486 custom kernel
by Jerry Geis 14 Dec '09

14 Dec '09

Hi all, Is it possible to take the 686 CentOS 5, install that in virtual machine, install a custom kernel that is the 486 flavor, take that image and put it on a 8G CF card - insert that into a small form factor 486 class machine and have that work? I am hoping the extra instructions in a 686 (MMX, SEE etc) are not used by any libraries that I would be using (just standard stuff) and the new 486 compiled kernel would not be using those instructions either. Can this possible work? I am hoping to not use debian i386 basically. Thanks, Jerry

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Virtualization Howto
by Matt 14 Dec '09

14 Dec '09

I see this virtualization howto for Ubuntu https://help.ubuntu.com/community/UEC/CDInstall It goes into how to make your own cloud. Is there a similiar howto anywhere for CentOS 5.4 or anything? Matt

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Future of MySQL
by Kai Schaetzl 14 Dec '09

14 Dec '09

I thought I post this link http://monty-says.blogspot.com/2009/12/help-saving-mysql.html in case anyone isn't aware of this yet and wants to email the EC. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com

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Firewall for virtual machines
by MHR 14 Dec '09

14 Dec '09

I realize I'm not getting a lot of questions answered here lately, and I'm going to presume that this is for legitimate reasons (i.e., people don't know or are too busy to think about it), not because they seem stupid (if they do, please tell me, on the list or privately). I run Windows as a VMWare guest on top of my CentOS host, and I generally have not used a firewall on the guest. This is partly because I only run it rarely, and it seems like a waste when it's running on a host that has its own, pretty effective firewall, but today I began to wonder - would it be a bad idea (or a complete waste) to use a firewall, like ZoneAlarm, on my Windows guest OS? Opinions welcome. Thanks. mhr

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Re: [CentOS] C5 updates?
by Karanbir Singh 14 Dec '09

14 Dec '09

On 12/14/2009 11:42 AM, Sorin Srbu wrote: > Upstream didn't do this to spite us, and others building off of the Upstream > sources, did they? I doubt it :) they are all really nice people ( the ones I know and have met anyway )! -- Karanbir Singh London, UK | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

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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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Discuss December 2009