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proxy arp on CentOS 5?
by Florin Andrei 03 Aug '07

03 Aug '07

Anybody implemented a working proxy ARP with CentOS 5? I am trying to implement DNAT on a dual-homed firewall (servers behind firewall are on private IPs) and that requires proxy ARP. I've tried several different methods but nothing seems to work. Any advice? Is proxy ARP broken on v5? -- Florin Andrei http://florin.myip.org/

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command for dhcp client
by Jerry Geis 03 Aug '07

03 Aug '07

Is there a command that says DONT use the ifcfg-eth0 setting(s) that basically have a static address and start the network in DHCP. I dont want to disturb the static settings in ifcfg-eth0 or re-enter them once my DHCP setting is done... I just want to temporarily run with DHCP (I'm on different network than the static setup). Yes I can copy files and then recopy files and all that - but is there a command that just says startup the network in DHCP and dont change anything in the files. Jerry

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tomcat error on x86_64 with 2.6.18-8.1.8.el5xen & jre 1.6.*
by Johnn Tan 03 Aug '07

03 Aug '07

I get the same error as this person: http://www.centos.org/modules/newbb/viewtopic.php?topic_id=9349 Like the poster, I get the error with tomcat 6.0.13 on x86_64, kernel 2.6.18-8.1.8.el5xen and both jre 1.6.0_01 and 1.6.0_02 When I revert to jre 5u12 on the same kernel, I don't get the problem. If I stay with jre 6, but use kernel 2.6.18-8.el5, I also don't get the error. So it's not clear to me whether this is a java problem or a kernel problem. Any hints? For now, I can use jre 5u12, but I could file a bug if I could figure out which one is actually causing the error. johnn

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Chmod Explaination
by joseph blase 03 Aug '07

03 Aug '07

Howdy list, I can't seem to find any doc's explaining what's really going on behind this scenario: A user home directory had been reset to : d--- --- --- user group user_dir As root i tried to : chmod -R 750 user_dir got permission denied, my friend tried with as user that owns the directory to: chmod -R 750 user_dir and voila it works. My question is how come did it work, since the user_dir doesn't have a owner permission attached and why user root has been denied with changing the mode? Rgds, Joseph

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where the problem
by simon 03 Aug '07

03 Aug '07

Dear All I have jus migrated to centos 5 and jus wondering why n where this problem could be server A which is running for the past 2 years used as my primary dns and mail server redhat linux 8 sendmail ver-8.12.5-7 bind ver -9.2.1-9 since the server is old and is prone to all security problems i have a new machine which i have installed the following and will replace my existing redhat dns + mail server centOS 5 bind-9.3.3-8.el5 sendmail-8.13.8-2.el5 mailscanner latest spam assassin + clamav - latest dkim filter plus the lastest updates now when i send a mail to my yahoo account from my old redhat server it goes fine to inbox I disconect my old red hat server cable and plug it new centos server since both have the same IP's and when i send a mail from the centos server it goes to yahoo bulk mail and not to inbox receving is fine with both server i am jus wondering why. even i see the DKIM filter inserts a global key ( text record of my DNS ) in my mail logs and also in the yahoo when i see full headers in yahoo apprecite if someone could help me thnks and regards simon -- Network Administrator -- Network Administrator

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Full server restore-point image
by Alain Reguera Delgado 03 Aug '07

03 Aug '07

Hi, After some months of configuring and testing a small server, think that would be nice to make a full server restore-point image in order to recover it if something goes wrong in the future, just restoring the image back and not making the full install and configure process all over again. The server uses Logical Volumes. I was thinking on using the CentOS LiveCD and then use dd command to clone all partitions to another storage device. But I have no experience on this. What do you suggest ? Cheers, al.

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Another oddity - users get no ftp (no ftpd) on latest update from CentOS 5.0
by Mark Hull-Richter 03 Aug '07

03 Aug '07

The subject pretty much says it all. My ftp comes back with "ftp: ftp/tcp: unknown service" - unless I run it as root, in which case it works just fine. What's going on here? Did I screw up a setting of mine or something? Thanks. mhr

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EPEL repo
by JC Júnior 02 Aug '07

02 Aug '07

hi all, I received a message about EPEL repository, I would like to know if this repo is long term support too. thanks; Jc júnior

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how to export and import VMware servers
by Rogelio Bastardo 02 Aug '07

02 Aug '07

I recently build a CentOS-based VMware server (the free ver) and now need to move all of the virtual machines off my old Windows-based VMware server (also the free ver) to this next CentOS-based one. I have successfully FTP'd all of the files to the new CentOS box and have even opened the server in the console Window, but cannot "start" it. I start the machine (like I always do), and nothing happens. Unfortunately, I cannot simply run "import", as I'm using a Windows-based workstation to use the Windows-program to console into the CentOS-based VMware server. I suspect that perhaps some config file or something still thinks that the machine is still running in the previous Windows host OS? Now, both my guest OS and host OS are both CentOS 4.5. Before, the host OS was Windows 2003, and my host OS is CentOS 4.5. Any ideas of where to look would be greatly appreciated. (I understand that this might not be the best place to ask such a non CentOS-related question.)

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CentOS - HP
by Tom Brown 02 Aug '07

02 Aug '07

Hi Does anyone have experience of running CentOS on HP hardware, both rack mount kit and blades? How are things like hardware monitoring etc? We may be moving from Dell to HP and i get on really well with OMSA and Nagios etc so ideally would like to monitor using similar tools rather than some central 'enterprise' dashboard etc. Any real world experience? thanks

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