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Implementing GroupWise Monitor in a Linux Cluster
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17.2.3 Selecting the Monitor Agent Partition and Secondary IP
Address
As with the MTA and the POA, the Monitor Agent needs a secondary IP address that remains the
same no matter which node in the cluster it is running on. You can associate the Monitor Agent with
the domain that was accessed during installation or with any other domain, so that they fail over
together, or you can associate the Monitor Agent with its own shared partition, so that it fails over
independently of any domain.
17.2.4 Determining an Appropriate Failover List for the Monitor
Agent
By default, a
GroupWise partition
is configured to have all nodes in the cluster in its failover list,
organized in ascending alphanumeric order. Only one node at a time can have a particular
GroupWise partition mounted and active. If a GroupWise partition’s preferred node fails, the
partition fails over to the next node in the failover list. You should customize the failover list for
each GroupWise partition based on the
fan-out-failover
principle.
As with the other agents, you need to decide which nodes in the cluster would be appropriate
locations for the Monitor Agent to fail over to. You must install the Monitor Agent software on all of
the nodes where you want the Monitor Agent to be able to fail over. For a review of failover lists, see
Section 13.6.2, “Determining Appropriate Failover Lists for the Agents,” on page 138
, which
describes the issues in the context of planning MTA and POA installations.
17.2.5 Determining Cluster Resource Information for the
Monitor Agent
A cluster resource is a
shared partition
, secondary IP address, application, service, Web server, etc.,
that can function successfully anywhere in the cluster. Cluster resources include the GroupWise
agents and the Messenger agents. When using the
Configure GroupWise for Clustering
option, the
GroupWise Installation program needs to know the mount point for the
GroupWise partition
where
it can access a domain database in order to gather information about agents to monitor. The
Installation program also needs to know the secondary IP address of the GroupWise partition.
MONITOR CLUSTERING WORKSHEET
Under
Item 1: GroupWise Partition for Monitor Agent
, specify the secondary IP address for the
Monitor Agent.
MONITOR CLUSTERING WORKSHEET
Under
Item 4: Monitor Agent Failover List
, list the nodes that you want in the Monitor Agent failover list.
MONITOR AGENT CLUSTERING WORKSHEET
Under
Item 5: Cluster Resource Information
, list the mount point and secondary IP address for the
GroupWise partition where the domain and post office will be located.
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