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*SOLVED* Centos 4 or 5 for HN? [message #14973]

Mon, 16 July 2007 03:10

ugob
Messages: 271
Registered: March 2007

Senior Member

Hi, I have 2 servers that are already Centos 4/OpenVZ. I'm about to put them in a datacenter. I have another server, which is CentOS 5 (my friend installed this one). I'm wondering if I should keep Centos 5 on this one or keep centos4. I haven't tried 5 at all yet, but I want to make sure I don't have to re-install the HN in something like 1 year... Is OpenVZ planned to be supported on Centos4 as a HN for a long time? Is there a clear advantage about installing Centos5?

Thanks,

Ugo

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

[Updated on: Fri, 20 July 2007 09:15] by Moderator

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Re: Centos 4 or 5 for HN? [message #14983 is a reply to message #14973]

Mon, 16 July 2007 08:02

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

Hello,

As you know OpenVZ software contains two major parts: kernel and tools.

Current supported OpenVZ kernels are based on:
2.6.9-rhel4
2.6.18
2.6.18-rhel15
2.6.20

Any of these kernels can be installed on any reasonable Linux distribution. I mean it is absolutely legally to install 2.6.18-rhel5 kernel on CentOS 4 or on the contrary 2.6.9-rhel4 based kernel on CentOS 5.

So, you can install OpenVZ on CentOS 4 and CentOS 5 smoothly. No any problem now and in future are expected.

Thanks,
Vasily.

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Re: Centos 4 or 5 for HN? [message #15000 is a reply to message #14983]

Mon, 16 July 2007 11:37

ugob
Messages: 271
Registered: March 2007

Senior Member

Thanks,

I don't know centos 5 at all, is there any compelling reasons to go this way (new tools, etc)?

Thanks,
Ugo

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: Centos 4 or 5 for HN? [message #15001 is a reply to message #15000]

Mon, 16 July 2007 11:57

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

In in respect to OpenVZ there is no compelling reasons! Wink

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Re: Centos 4 or 5 for HN? [message #15801 is a reply to message #15001]

Mon, 13 August 2007 23:37

locutius
Messages: 125
Registered: August 2007

Senior Member

OpenVZ does NOT work on CentOS 5

3 days ago i took delivery of a virgin CentOS 5 server and although i have successfully installed OpenVZ and created both CentOS 4 and CentOS 5 VE's from the template ... both VE's are created without network connections

i advise caution because i have been forced to request my host to re-install the server with CentOS 4 in the hope that OpenVZ will create a VE with a working network

i will keep you updated

[Updated on: Mon, 13 August 2007 23:38]

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Re: Centos 4 or 5 for HN? [message #15814 is a reply to message #15801]

Tue, 14 August 2007 14:20

dowdle
Messages: 261
Registered: December 2005
Location: Bozeman, Montana

Senior Member

OpenVZ works just fine for me on CentOS 5... and I'm using the RHEL5 based kernel. What kernel are you using?

You might want to look at other things that might be causing the problem. Just to eliminate the firewall on the HN as a potential problem, do a "service iptables stop" and see if you can suddenly reach your VPSes. I've seen that in a few cases... and it took some tweaking on the HN setup to resolve the issue.

--
TYL, Scott Dowdle
Belgrade, Montana, USA

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Re: Centos 4 or 5 for HN? [message #15822 is a reply to message #15814]

Tue, 14 August 2007 17:22

locutius
Messages: 125
Registered: August 2007

Senior Member

thanks for your reply i have continued the thread in my original topic above http://forum.openvz.org/index.php?t=msg&th=3097&star t=0&

the CentOS kernel was as last week's stable release and the OpenVZ kernel was from Friday

ssh into the ip of the VE was landing me each time into the HN. ping the VE from the HN works fine, but ping the HN or anything from the VE did not work

anyway asked my host to re-install the server with CentOS 4.5 and that has now been done. tweaking is beyond my skills without support i am working in the dark on OpenVZ

thank you for replying

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Re: Centos 4 or 5 for HN? [message #16001 is a reply to message #15822]

Sat, 18 August 2007 01:52

locutius
Messages: 125
Registered: August 2007

Senior Member

UPDATE: i retract my previous statement

OpenVZ works very well on CentOS 5

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Re: Centos 4 or 5 for HN? [message #16144 is a reply to message #16001]

Thu, 23 August 2007 21:48

seanfulton
Messages: 105
Registered: May 2007

Senior Member

OpenVZ works fine on CentOS 4 and 5, the issue is really what else you might run on the HN. There are big differences between the two. We are trying to run GFS, for example, and are not able to have a mixed environment, it has to be all 4 or 5, so we're in the process of upgrading all the machines to CentOS 5 (which works fine).

sean

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