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34758 discussions

Turning root partition into a RAID array
by Nigel kendrick 17 Nov '05

17 Nov '05

I have a CentOS 4.2 system that was set up VERY quickly following the demise of its former life as a CentOS 3 server - you don't want the full story, but it had to be done quickly to get a company up and working following a slight disaster involving an electrician, a portable appliance safety tester and a pulled power cable - anyway, here's where I am at... Everything is running fine but I now want to mirror the root partition (/dev/hda3). I have read quite a few set of notes on the theory but since they contain conflicting advice I am hoping someone here can set me straight - here's what IO want to do: hda3 and hde3 become a mirrored pair (/dev/md0) and this is mounted at boot time as / Is it as simple as a quick mdadm command and then an edit of /etc/inittab?? If I try and use mdadm right now I get complaints that /dev/hda3 is busy (fair enough) so I guess I need to be in less than 'full steam ahead' mode to make the change - over to you.... Thanks

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question
by adrian kok 17 Nov '05

17 Nov '05

Hi all I have the following questions 1/ do you know how to interrupt the console to capture the message when the system is in booting 2/ I use "top" to monitor the process to output the file. but the file is empty. Do you know why? Thank you

2 3

Generate 32bit programs on x86_64 architecture?
by Michael Ubell 17 Nov '05

17 Nov '05

I'm trying to run purify on CentOS on an Intel Pentium 4/630 processor. Purify does not like the 64bit code. Is there some way to compile and run programs so that they are only using the 32 bit model? I tried gcc -m32 but then the system libraries come up missing. Purify engine: Error: Couldn't open the file crt1.o Purify engine: Error: Couldn't open the file crti.o Purify engine: Error: Couldn't resolve library directive: -ltcl8.4, (couldn't find library libtcl8.4.so or libtcl8.4.a). Purify engine: Error: Couldn't resolve library directive: -ldl, (couldn't find library libdl.so or libdl.a). Purify engine: Error: Couldn't resolve library directive: -lieee, (couldn't find library libieee.so or libieee.a). Purify engine: Error: Couldn't resolve library directive: -lm, (couldn't find library libm.so or libm.a). Purify engine: Error: Couldn't resolve library directive: -lc, (couldn't find library libc.so or libc.a). Purify engine: Error: Couldn't open the file crtn.o Purify engine: Error: Couldn't resolve library directive: -ldl, (couldn't find library libdl.so or libdl.a).

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Problem with X...help please.
by Sanjay Arora 17 Nov '05

17 Nov '05

List: I am using Centos updated till date. Last night I shut down the system and X was working fine...today morning I start X and it does not work for my normal user. X starts for root & other users. The error output seems totally incomprehensibe and scrolls away from the screen too quickly. The /var/log/Xorg.0.log seems to have only the subsequent success of login of other user or I can't seem to find the correct error in it. Only thing I did yesterday in addition to normal browsing & emailing & yum updation...was to install the Yahoo messenger for RH9...was said to be compatible with ES4 and it did work perfectly fine. How do I startx X for the user it is not starting for? or at least where do I find the errors to report. Only display 0 setup for X. Help a desperate man please !! ;-((( Sanjay. --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.

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RE: [CentOS] SELinux threads, cynicism, one-upmanship, etc.
by Nathan Oyler 16 Nov '05

16 Nov '05

> Ummm, why were you installing Fedora Core 2 in a _production_ > environment? > > I mean, I'm all for Fedora Core in a production environment, > but _not_ the latest version that changes everything (which > Fedora Core 2 did). Yikes! It was a request I had nothing to do with. I didn't say it was an entirely reasonable argument, but those were my feelings. I wouldn't have installed FC2 if that wasn't what was forced on me. I have my domains, and this wasn't one of them. But yes, you're right.

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RE: [CentOS] SELinux threads, cynicism, one-upmanship, etc.
by Nathan Oyler 16 Nov '05

16 Nov '05

> The main reason I think sysadmins in general seem to hate SELinux is the > 'Mandatory' part of 'Mandatory Access Control' : that is, superuser power > is too addictive to get rid of, and SELinux can do away with 'superuser' > powers entirely. I disagree with this. The main reason I dislike SELinux is the way I was introduced to it. I wasted quite a bit of time on an issue before I even knew what SELinux was because it was turned on by default on an FC2 machine. I was asked by another admin to use FC2 on a particular job, and I never saw SELinux. I turn it on now for all machines, but if you were to have asked me at any point in the week my feelings on SELinux they would have not been pleasant. At the time, I looked and there wasn't any real documentation for what I was trying to do, and why it failed. Now after time has passed, I realize what was going on but when you're in the middle of a job on a time crunch, the last thing you want to do is learn a new security system. I turned the thing off. Got what I needed done, and came back to the issue at a later date. The turning it on by default irked me. Superuser power as a trip is just silly. What's the difference? All I want is enough power to do my job.

2 1

correct way to migrate old data on hda to new sda
by Jerry Geis 16 Nov '05

16 Nov '05

I am migrating off of a 40GIG hda to a new 160GIG sda disk. I plan on installing 4.2 from scratch. But after that what is the correct way do transfer all the data from hda (home partition really) to the new sda home partition? I presume there is just a couple files in /etc to restore also. Like hosts, passwd. Anything else? Other suggestions welcome also. this is my first time migrating to a new disk. THanks, jerry

2 1

Java with 4.2
by Russ N3TIH 16 Nov '05

16 Nov '05

whats involved to have full java support with Centos 4.2 ? Russ

3 2

Downloading v4
by kevin.kempter＠dataintellect.com 16 Nov '05

16 Nov '05

Hi List; I see in the 4.2 downloads area the following: [ ] CentOS-4.2-i386-bin1of4.iso 11-Oct-2005 13:07 618M [ ] CentOS-4.2-i386-bin2of4.iso 11-Oct-2005 13:13 635M [ ] CentOS-4.2-i386-bin3of4.iso 11-Oct-2005 13:20 639M [ ] CentOS-4.2-i386-bin4of4.iso 11-Oct-2005 13:22 217M [ ] CentOS-4.2.ServerCD-i386.iso 07-Nov-2005 04:36 558M What is the 4.2ServerCD ? I plan to download the 4 bin cd's and load the os on a sony vaio laptop. Do I also need the server cd?

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Re: [CentOS] Downloading v4
by Brian T. Brunner 16 Nov '05

16 Nov '05

It is a single-CD distribution of CentOS 4 that (so I hear) will install in *small* places. Since it is intended as a small server distribution, the package set is sharply reduced. Brian Brunner brian.t.brunner(a)gai-tronics.com (610)796-5838 >>> kevin.kempter(a)dataintellect.com 11/16/05 01:56PM >>> Hi List; I see in the 4.2 downloads area the following: [ ] CentOS-4.2-i386-bin1of4.iso 11-Oct-2005 13:07 618M [ ] CentOS-4.2-i386-bin2of4.iso 11-Oct-2005 13:13 635M [ ] CentOS-4.2-i386-bin3of4.iso 11-Oct-2005 13:20 639M [ ] CentOS-4.2-i386-bin4of4.iso 11-Oct-2005 13:22 217M [ ] CentOS-4.2.ServerCD-i386.iso 07-Nov-2005 04:36 558M What is the 4.2ServerCD ? I plan to download the 4 bin cd's and load the os on a sony vaio laptop. Do I also need the server cd? _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.hubbell.com - Hubbell Incorporated

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