User's Guide

Specify subnets to be monitored in the SUBNET section.

Installation Step: OS435

This ensures a successful package start only if the required CFS file system(s) are available.

DEPENDENCY_NAME SG-CFS-MP-1

DEPENDENCY_CONDITION SG-CFS-MP-1=UP

DEPENDENCY_LOCATION SAME_NODE

DEPENDENCY_NAME SG-CFS-MP-2

DEPENDENCY_CONDITION SG-CFS-MP-2=UP

DEPENDENCY_LOCATION SAME_NODE

Optional Step: OS440

If the SAP message server or SAP dispatcher should be monitored as Serviceguard service, the

<pkg_name>.config

file needs to configure the monitoring.

The recommended naming for the service is <pkg_name>ms or <pkg_name>disp.

Monitoring Routines periodically check the availability and responsiveness of the SAP Message Server or

SAP dispatcher. If it recognizes the SAP Message Server or SAP dispatcher to be unavailable, Serviceguard

will switch the package and try to restart on different hardware since the SAP Message Server or SAP

dispatcher are crucial components of a SAP Central Instance.

First, the monitoring scripts need to be copied to the current package directory. For a SAP System C11:

cp /opt/cmcluster/sap/SID/sapms.mon /etc/cmcluster/C11

cp /opt/cmcluster/sap/SID/sapdisp.mon /etc/cmcluster/C11

The monitor will be paused within ten seconds if a debug file gets created for the package:

touch /etc/cmcluster/<SID>/debug

The debug file can be used to allow manual SAP instance shutdowns and startups.

NOTE: The manual startup using common startsap/stopsap scripts may not work correctly with

Netweaver 2004s based Application Servers. In this case the instances need to started by directly using the

sapstart binary passing the start profile as a parameter. For example:

sapstart pf=/sapmnt/<SID>/profile/START_\

The service monitor will not be able to detect a stopsap command and will consider a manual instance

shutdown to be a failure. The package will then fail over the instance to another node. The existence of the

debug file can prevent that. If the debug file gets removed, the service monitor continues to run. Make sure

that the packaged SAP instance is already running when removing the debug file or an immediate failover

will occur. As long as the debug file exists locally, a package shutdown would not try to stop the SAP instance

or its database. A local restart of the package would only take care of the HA NFS portion. The instance

would not be started with the package and the monitor would be started in paused mode.

Example entries in <pkg_name>.config:

Message Server Monitor:

SERVICE_NAME ciC11ms

SERVICE_FAIL_FAST_ENABLED YES

SERVICE_HALT_TIMEOUT 300

Dispatcher Monitor:

SERVICE_NAME ciC11disp

SERVICE_FAIL_FAST_ENABLED YES

SERVICE_HALT_TIMEOUT 300

The service name and command referencing the SAP message server monitor and SAP dispatcher monitor

must be specified in <pkg_name>.control.script in order to use the service defined in the config files

66 Step-by-Step Cluster Conversion