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CCM(4)

NAME

CCM - Cluster configuration map file (provided on Production Server and Available Server configurations only)

DESCRIPTION

The Cluster Monitor utility uses the cluster configuration map file (/etc/CCM) to record the hardware configuration of a cluster. For the Cluster Monitor to properly display cluster configuration information, each member system must have an up-to-date copy of the same cluster configuration file. You use the cluster_map_create utility on a single cluster member to create or update this file, and distribute it to all other members. The cluster_map_create command calls the ccmtr command to load the cluster map into each member's kernel. If your cluster is configured to run the Cluster Monitor, you must enter the cluster_map_create command once after installing and configuring the cluster in order to create the /etc/CCM file. Each time you modify the cluster's configuration, you must re-enter the cluster_map_create command to rebuild the map. Never modify the contents of the /etc/CCM file with a text editor. Instead, use the cluster_map_create command whenever you add hardware components to or remove hardware components from the cluster configuration. The /etc/CCM file includes a set of nested blocks, each delimited by a pair of braces ({ }). Each block consists of individual statements that may themselves define a block. Each statement and block is terminated by a semicolon. Spaces and tabs are allowed between all syntactical tokens. Comments are allowed in either C preprocessor style (bracketed by /* and */) or in the single-line style (preceded by / /). The following keywords are defined: Cluster Name for the entire cluster Member Hostname of a cluster member MC Memory Channel interconnect MC_Connection Memory Channel connection to a member SCSI_Device SCSI bus SCSI_Connection SCSI bus connection Network Network interconnect Network_Connection Connection to a network interconnect Device SCSI device Attributes Attributes corresponding to a specific block

FILES

/etc/CCM Cluster configuration map file. /usr/sys/include/ccm_def.h Cluster configuration map definition header file.

RELATED INFORMATION

Commands: asemgr(8), cluster_map_create(8), ccmtr(8), cmon(8), tractd(8), submon(8)

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