Citrix Systems 6 User Manual

130

Get a Xen 

dmesg

 (the output of the kernel ring buffer) from specified XenServer hosts.

The host(s) on which this operation should be performed are selected using the standard selection mechanism
(see 

 above). Optional arguments can be any number of the 

 listed at the beginning

of this section.

host-emergency-management-reconfigure

 interface=

<uuid_of_management_interface_pif>

Reconfigure the primary management interface of this XenServer host. Use this command only if the XenServer
host is in emergency mode, meaning that it is a member in a resource pool whose master has disappeared from
the network and could not be contacted for some number of retries.

host-enable

 [

<host-selector>

=

<host_selector_value>

...]

Enables the specified XenServer hosts, which allows new VMs to be started on them.

The host(s) on which this operation should be performed are selected using the standard selection mechanism
(see 

 above). Optional arguments can be any number of the 

 listed at the beginning

of this section.

host-evacuate

 [

<host-selector>

=

<host_selector_value>

...]

Live migrates all running VMs to other suitable hosts on a pool. The host must first be disabled using the host-
disable command.

If the evacuated host is the pool master, then another host must be selected to be the pool master. To change
the pool master with HA disabled, you need to use the pool-designate-new-master command. See 

 for details. With HA enabled, your only option is to shut down the server,

which will cause HA to elect a new master at random. See 

.

The host(s) on which this operation should be performed are selected using the standard selection mechanism
(see 

 above). Optional arguments can be any number of the 

 listed at the beginning

of this section.

host-forget

 uuid=

<XenServer_host_UUID>

The 

xapi

 agent forgets about the specified XenServer host without contacting it explicitly.

Use the 

--force

 parameter to avoid being prompted to confirm that you really want to perform this operation.

Do not use this command if HA is enabled on the pool. Disable HA first, then enable it again
after you've forgotten the host.

This command is useful if the XenServer host to "forget" is dead; however, if the XenServer
host is live and part of the pool, you should use xe pool-eject instead.

host-get-system-status

 filename=

<name_for_status_file>

[entries=

<comma_separated_list>

] [output=

<tar.bz2 | zip>

] [

<host-selector>

=

<host_selector_value>

...]