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Removing XenServer and KVM Hosts
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12.4.1. Removing XenServer and KVM Hosts
A node cannot be removed from a cluster until it has been placed in maintenance mode. This will
ensure that all of the VMs on it have been migrated to other Hosts. To remove a Host from the cloud:
1. Place the node in maintenance mode.
See Section 12.2, “Scheduled Maintenance and Maintenance Mode for Hosts”.
2. For KVM, stop the cloud-agent service.
3. Use the UI option to remove the node.
Then you may power down the Host, re-use its IP address, re-install it, etc
12.4.2. Removing vSphere Hosts
To remove this type of host, first place it in maintenance mode, as described in Section 12.2,
“Scheduled Maintenance and Maintenance Mode for Hosts”. Then use CloudPlatform to remove the
host. CloudPlatform will not direct commands to a host that has been removed using CloudPlatform.
However, the host may still exist in the vCenter cluster.
12.5. Re-Installing Hosts
You can re-install a host after placing it in maintenance mode and then removing it. If a host is down
and cannot be placed in maintenance mode, it should still be removed before the re-install.
12.6. Maintaining Hypervisors on Hosts
When running hypervisor software on hosts, be sure all the hotfixes provided by the hypervisor
vendor are applied. Track the release of hypervisor patches through your hypervisor vendor’s support
channel, and apply patches as soon as possible after they are released. CloudPlatform will not track or
notify you of required hypervisor patches. It is essential that your hosts are completely up to date with
the provided hypervisor patches. The hypervisor vendor is likely to refuse to support any system that is
not up to date with patches.
Note
The lack of up-do-date hotfixes can lead to data corruption and lost VMs.
(XenServer) For more information, see Highly Recommended Hotfixes for XenServer in the
CloudPlatform Knowledge Base
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12.7. Using Cisco UCS as Bare Metal Host CloudPlatform
(Supported only for use in CloudPlatform zones with basic networking.)
You can provision Cisco UCS server blades into CloudPlatform for use as bare metal hosts.
The goal is to enable easy expansion of the cloud by leveraging the programmability of the UCS
converged infrastructure and CloudPlatform’s knowledge of the cloud architecture and ability to
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http://support.citrix.com/article/CTX133467