How To Do Live Migration Of OpenVZ Containers
May 07, 2009, 04:31 (0 Talkback[s])
(Other stories by Falko Timme)
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"2 Live Migration Of vm1.example.com From server1 To
"To check if the live migration is really done "live", i.e.
without interruption of the guest, you can log into vm1.example.com
(e.g. with SSH) and ping another server:
"This will ping google.com until you press CTRL + C. The pinging
should continue even during the live migration.
"I want to run the live migration as the root user. Live
migration will work only if the root user on server1 can log into
server2 via SSH without being asked for a password (this means SSH
root logins must be allowed on server2 - check your sshd
configuration: /etc/ssh/sshd_config). This can be achieved by
generating a key pair for root@server1 and then store
root@server1's public key in the ~/.ssh/authorized_keys file of
root@server2. Fortunately, there's a bash script that can do this
for us. We create the script as follows:"