An Enterprise Server Cluster requires minimal configuration. The only mandatory environment variables are ES_CLUSTER, which should be set in every region that is participating as a member of a cluster, and ES_GLM, which should be set in the region designated as the Global Lock Manager (GLM).
Mandatory environment variables
- ES_CLUSTER
- Value: Any value sets the variable.
- This environment variable should be set in every region that is participating as a member of an Enterprise Server Cluster.
- ES_GLM
- Value: Any value sets the variable.
- This environment variable should be set in the region designated as the GLM.
Optional environment variables
- ES_CLUSTER_ISC_TRACE
- Value: Any value sets the variable.
- This variable enables tracing on the Enterprise Server Cluster ISC listeners (no definition, dynamically created). A file called
ES-Cluster-ISC-trace.txt will be created in the region's work area.
-
ES_CLUSTER_LISTENER_PORT_TO_USE
- Value:
port-number
- This variable enables you to use a specific port for a listener of the cluster.
- ES_NO_CLUSTER
- Value: Any value sets the variable.
- This variable can be used to prevent any attempt to join an Enterprise Server Cluster.
- ES_GLM_TIMEOUT
- Value:
n seconds.
- This variable only applies to the region designated as the GLM. This variable is defined in seconds and specifies the duration in which a submit request to the GLM can be retried before disabling the connection permanently. The timeout value is pushed from the GLM to all other members of the cluster.
- ES_HOSTNAME_TO_USE
- Value: Hostname
- If the machine running an Enterprise Server uses more than one network card, you may need to set this variable to indicate to the Enterprise Server communications manager (MFCS) which hostname to use.
