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Clustered OpenVZ [message #38188]

Thu, 26 November 2009 22:10

yourweb
Messages: 6
Registered: November 2009

Junior Member

Hi
I was wondering about a clustered OpenVZ setup on a SAN how I can transfer the VPS on an other node where the data already exists? Is it possible to transfer the RAM without migrating the data on the hard disks?

Just to explain: I know that the SAN has to be mounted as /vz and that /etc/vz files have to be ln to /vz/etc/vz on the SAN, but what if I want to migrate VPS 1 from node 1 to node 2 without (re)booting?

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Re: Clustered OpenVZ [message #38207 is a reply to message #38188]

Fri, 27 November 2009 22:03

Paparaciz
Messages: 302
Registered: August 2009

Senior Member

you should check vzmigrate script and delete unnecessary parts where it rsync's files. or build your own script reading http://wiki.openvz.org/Checkpointing_and_live_migration
you need only checkpointing and vzctl restore parts. afaik your script will have to rsync checkpoint file to the target and then do vzctl restore.
and from practice i should mention that live migration not always works smoothly.

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Re: Clustered OpenVZ [message #38208 is a reply to message #38207]

Fri, 27 November 2009 22:05

yourweb
Messages: 6
Registered: November 2009

Junior Member

Paparaciz wrote on Fri, 27 November 2009 17:03

I'm sorry, did already found the checkpoint option and posted this in an other topic.

Anyway, how can I disable vzmigrate to copy the files and only transfer the RAM?

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