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Cnetos 5.4 ext3 question...
by Tom Bishop 29 Dec '09

29 Dec '09

I could find this out but at the moment I dont have a copy of 5.4 running, can anyone tell me for a default centos5.4 install are ext3 barriers on by default? Thanks in advance...

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Hardening
by ML 29 Dec '09

29 Dec '09

Hi Guys, I would like advice for best practices to secure my linux boxes. Know if I have been hacked, know of security breaches, etc. Can anyone provide advice? -Jason

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Centos & UPS
by Robert Spangler 29 Dec '09

29 Dec '09

Hello, I received for X-mas an APC UPS system form my computer. I'm looking for how I can integrate it into the system so that the system will shut down either after the UPS power is low enough or a timed event after the power is out will automatically shutdown. Would also like it to be smart enough to stop the shut down process if power is restored before the shutdown starts. Anyone have any recommendation for this setup? Thanks. -- Regards Robert Linux User #296285 http://counter.li.org

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NFS problem
by Timothy Murphy 29 Dec '09

29 Dec '09

I'm trying to NFS-mount a CentOS directory on my Fedora laptop, but I find I can only do this is I turn off the firewall on the CentOS server. If instead I go to system-config-securitylevel-tui on the server, and allow NFS4, this does not do the trick. Nor does allowing port 2049. What do I need to allow? [I should say that the CentOS server is remote, and difficult to access directly; that is why I used system-config-securitylevel-tui, rather than system-config-securitylevel .] -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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Re: [CentOS] mkdir this "." directory
by Les Bell 29 Dec '09

29 Dec '09

adrian kok <adriankok2000(a)yahoo.com.hk> wrote: >> I have this . folder under tmp << It's called a directory, not a "folder" and there's one in every directory. It's a hard link to the current directory, just like ".." is a hard link to the directory above. >> 1/ How they can make it this folder? << Create any directory, and it will appear, as I've explained. >> 2/ How can I remove it? << If you remove it, you'll be removing the /tmp directory itself, which is not a bright idea. Imagine someone sitting on a branch, sawing away between themselves and the trunk of the tree. . . Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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Recent Java OpenJDK RPMs
by Mathieu Baudier 28 Dec '09

28 Dec '09

Hello, I have quite a few issues with the default OpenJdk package on CentOS 5.4 x86_64 (e.g. crash of Eclipse [1], and now excessive permgen memory requirement causing the JVM to freeze and requiring a kill -9). These issues do not appear with a local build of the latest stable IcedTea [2], so I am considering using a more recent version of the JVM (I am not running Red Hat certified Java apps). Does anyone know of ongoing efforts to provide recent versions of the JDK as (S)RPMs? I found some in CentOS Testing [3] but they date back from July 2008 and are b09 whereas current is b16. Thanks in advance for any hints! Cheers, Mathieu [1] http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=401 [2] http://icedtea.classpath.org/wiki/RhelBuildInstructions [3] http://dev.centos.org/centos/5/testing/x86_64/RPMS/

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environment-modules
by m.roth＠5-cent.us 27 Dec '09

27 Dec '09

We've got a developer here who needs to use both java and openjdk. I was giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes with configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one. Does anyone have a pointer to a howto, or maybe even a sample one? Thanks in advance. mark

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SFTP - stalled - on large files
by Sean Carolan 27 Dec '09

27 Dec '09

I have an SSH server that was set up for a client, and every time we try to upload large files via SFTP or scp, the transfers speed quickly slows to zero and gives a - stalled - status message, then disconnects. Here is an example: ftp> put iTunesSetup.exe iTunesSetup.exe Uploading iTunesSetup.exe to /home/scarolan/iTunesSetup.exe iTunesSetup.exe 0% 704KB 0.0KB/s - stalled -debug1: channel 0: free: client-session, nchannels 1 Read from remote host ftp.authoria.net: Connection reset by peer debug1: Transferred: stdin 0, stdout 0, stderr 66 bytes in 203.9 seconds debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.3 debug1: Exit status -1 Connection closed I have no idea why this is happening. Can anyone point me in the right direction?

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CentOS 5.4 Upgrade installation failure
by Edward Diener 26 Dec '09

26 Dec '09

CentOS 5.3 has been running fairly good except for a slow ethernet connection so I thought I would upgrade to CentOS 5.4 to see if that improved things. I had previously changed fstab and menu.lst to use UUID instead of LABEL in order to insulate myself from partition label changes I wanted to make. This worked fine in CentOS 5.3. When I attempted to upgrade from 5.3 to 5.4 using the installation disk and telling it to upgrade rather than do a new install, the installation correctly found my root partition as /dev/sdb8. When I proceeded with the upgrade I received the error: "Error mounting device UUID=cee298a0-9c47-4a3a-ac84-23db4d20edd5 as /. No such file or directory. This most likely means the partition has not been formatted." But of course it has been formatted and is my / partition running CentOS 5.3. Does anyone know how to fix this to get CentOS 5.3 upgraded ? Do I have to use LABEL in fstab and menu.lst for my partitions, or perhaps just for my root partition ? Any other ideas why this is failing ?

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rhn_register
by Timothy Murphy 26 Dec '09

26 Dec '09

Is this available on CentOS systems? If so, what advantage does running it provide? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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