此方法启动数据服务的 PROBE 程序。
#!/bin/ksh # # Monitor start Method for HA-DNS. # # This method starts the monitor (probe) for the data service under the # control of PMF. The monitor is a process that probes the data service # at periodic intervals and if there is a problem restarts it on the same node # or fails it over to another node in the cluster. The PMF tag for the # monitor is $RESOURCE_NAME.monitor. #pragma ident “@(#)dns_monitor_start 1.1 00/05/24 SMI” ############################################################################### # Parse program arguments. # function parse_args # [args ...] { typeset opt while getopts `R:G:T:' opt do case “$opt” in R) # Name of the DNS resource. RESOURCE_NAME=$OPTARG ;; G) # Name of the resource group in which the resource is # configured. RESOURCEGROUP_NAME=$OPTARG ;; T) # Name of the resource type. RESOURCETYPE_NAME=$OPTARG ;; *) logger -p ${SYSLOG_FACILITY}.err \ -t [$RESOURCETYPE_NAME,$RESOURCEGROUP_NAME,$RESOURCE_NAME] \ “ERROR: Option $OPTARG unknown” exit 1 ;; esac done } ############################################################################### # MAIN # ############################################################################## export PATH=/bin:/usr/bin:/usr/cluster/bin:/usr/sbin:/usr/proc/bin:$PATH # Obtain the syslog facility to use to log messages. SYSLOG_FACILITY=`scha_cluster_get -O SYSLOG_FACILITY` # Parse the arguments that have been passed to this method parse_args “$@” PMF_TAG=$RESOURCE_NAME.monitor SYSLOG_TAG=$RESOURCETYPE_NAME,$RESOURCEGROUP_NAME,$RESOURCE_NAME # Find where the probe method resides by obtaining the value of the # RT_BASEDIR property of the data service. RT_BASEDIR=`scha_resource_get -O RT_BASEDIR -R $RESOURCE_NAME \ -G $RESOURCEGROUP_NAM? # Start the probe for the data service under PMF. Use the infinite retries # option to start the probe. Pass the resource name, group, and type to the # probe method. pmfadm -c $PMF_TAG.monitor -n -1 -t -1 \ $RT_BASEDIR/dns_probe -R $RESOURCE_NAME -G $RESOURCEGROUP_NAME \ -T $RESOURCETYPE_NAME # Log a message indicating that the monitor for HA-DNS has been started. if [ $? -eq 0 ]; then logger -p ${SYSLOG_FACILITY}.info -t [$SYSLOG_TAG] \ “${ARGV0} Monitor for HA-DNS successfully started” fi exit 0 |