Environment variables

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.