ePrism User Guide - EdgeWave

HALO (High Availability and Load Optimization)
Cluster Management
The Cluster Management screen, shown below, is accessed on the Cluster Console via HALO ->
Cluster Administration, and shows mail processing statistics for each individual cluster member.
All cluster management and configuration must be performed from the Cluster Console system.
Any configuration changes made to the Cluster Console are automatically replicated to the cluster
member servers.
Cluster Commands
The following commands can be performed for the entire cluster or for individual cluster member
systems:
• Queues — Select the appropriate button to Run, Stop, and Flush the mail queues.
• Send — You can Enable or Disable the sending of mail from the cluster or specified system.
• Receive — You can Enable or Disable the receiving of mail for the cluster or specified system.
Activate/Deactivate Members
When member systems are added to a cluster, they are assigned an active state to process mail for
the cluster. If you need to take this system out of the cluster for maintenance purposes, they can be
temporarily deactivated from the cluster by using the Deactivate button. A deactivated cluster
member is still monitored, and can process mail, but its configuration will not be synchronized
with the Cluster Console. The state of the email queue is not changed when a cluster member is
deactivated.
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