Installation guide

(xend-relocation-server yes)
The default value, which disables migration, is no. Change the value of xend-
relocation-server to yes to enable migration.
(xend-relocation-port 8002)
The parameter, (xend-relocation-port), specifies the port xend should use for the
relocation interface, if xend-relocation-server is set to yes
The default value of this variable should work for most installations. If you change the
value make sure you are using an unused port on the relocation server.
The port set by the xend-relocation-port parameter must be open on both systems.
(xend-relocation-address '')
(xend-relocation-address) is the address the xend listens for migration commands
on the relocation-socket connection if xend-relocation-server is set.
The default is to listen on all active interfaces. The (xend-relocation-address)
parameter restricts the migration server to only listen to a specific interface. The default
value in /etc/xen/xend-config.sxp is an empty string(''). This value should be
replaced with a single, valid IP address. For example:
(xend-relocation-address '10.0.0.1')
(xend-relocation-hosts-allow '')
The (xend-relocation-hosts-allow 'hosts') parameter controls which hostnames
can communicate on the relocation port.
Unless you are using SSH or TLS, the guest's virtual memory is transferred in raw form
without encryption of the communication. Modify the xend-relocation-hosts-allow
option to restrict access to the migration server.
If the value is empty, as denoted in the example above by an empty string surrounded by
single quotes, then all connections are allowed. This assumes the connection arrives on a
port and interface which the relocation server listens on, see also xend-relocation-
port and xend-relocation-address.
Otherwise, the (xend-relocation-hosts-allow) parameter should be a sequence of
regular expressions separated by spaces. Any host with a fully-qualified domain name or
an IP address which matches one of these regular expressions will be accepted.
An example of a (xend-relocation-hosts-allow) attribute:
(xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$')
After you have configured the parameters in your configuration file, restart the Xen service.
# service xend restart
21.1. A live migrat ion example
Red Hat En t erp rise Lin ux 5 Virt ualizat ion Guid e
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