Installation guide

[et-virt08 ~]# time virsh migrate --live testvm1 et-virt07
real 0m10.378s
user 0m0.068s
sys 0m0.052s
At this point you have successfully performed an offline and a live migration test.
21.2. Configuring guest live migrat ion
This section covers offline migration of Xen guests to other servers running Red Hat Enterprise Linux.
Further, migration is performed in an offline method (using the xm migrate command). Live
migration can be done from the same command. However there are some additional modifications
that you must do to the xend-config configuration file. This example identifies the entries that you
must modify to ensure a successful migration:
(xend-relocation-server yes)
The default for this parameter is 'no', which keeps the relocation/migration server
deactivated (unless on a trusted network) and the domain virtual memory is exchanged in
raw form without encryption.
(xend-relocation-port 8002)
This parameter sets the port that xend uses for migration. Use this value unless your
network environment requires a custom value. Remove the comment symbol to enable it.
(xend-relocation-address )
This parameter is the address that listens for relocation socket connections, after you
enable the xend-relocation-server . The Xen hypervisor only listens for migration
network traffic on the specified interface.
(xend-relocation-hosts-allow )
This parameter controls the host that communicates with the relocation port. If the value is
empty, then all incoming connections are allowed. You must change this to a space-
separated sequences of regular expressions, for example:
(xend-relocation-hosts-allow- '^localhost\\.localdomain$' )>
Accepted values included fully-qualified domain names, IP addresses or space separated
regular expressions.
After configuring, reboot the host to load new settings.
⁠Chapt er 2 1 . Xen live migrat ion
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