Configuring Veritas Cluster Server to fail over a Logical Domain on a failure


Configuring Veritas Cluster Server to fail over a Logical Domain on a failure
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You can configure VCS to keep the LDoms highly available. In addition to monitoring the LDom, you can also configure VCS to monitor the applications that run in the LDom.

You must perform additional steps for VCS in the control domain to manage applications in the guest domains. After you install VCS in the control domain, you must create separate service groups for the RemoteGroup resource and LDom resource with online global firm dependency.

Note:

If you create the RemoteGroup resource as part of the LDom service group, then the RemoteGroup resource state remains as UNKNOWN if the LDom is down. So, VCS does not probe the service group and cannot bring the LDom online. The online global firm dependency between the service groups allows VCS to fail over a faulted child LDom service group independent of the state of the parent RemoteGroup service group.

Perform the following tasks to configure VCS to fail over an LDom on an LDom failure:

Review the configuration scenarios

See Configuration scenarios.
Configure logical domains

See Configuring logical domain.
Install VCS on control domain

See Installing Veritas Cluster Server inside the control domain.
Create VCS service group for LDom

See Creating the Veritas Cluster Server service groups for Logical Domain.

Perform the following additional tasks to configure VCS to fail over an LDom on an application failure:

Install single-node VCS on guest domain

See Installing single-node Veritas Cluster Server inside the guest domain.
Configure VCS in control domain to monitor the application in guest domain

See Configuring Veritas Cluster Server to monitor the application in the guest domain.

Figure: Workflow to configure VCS to fail over a Logical Domain on a failure depicts the workflow to configure VCS to manage the failure of an LDom or the failure of an application that runs in an LDom.

Figure: Workflow to configure VCS to fail over a Logical Domain on a failure

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