3.4.0 Matrix Server Administration Guide

Chapter 12: Configure Service Monitors 145

Scripts

Service monitors can optionally be configured with scripts that are run at

various points during matrix operation. The script types are as follows:

Recovery script. Runs after a monitor probe failure is detected, in an

attempt to restore the service.

Start script. Runs as a service is becoming active on a server.

Stop script. Runs as a service is becoming inactive on a server.

When a monitor is instantiated for a service (because the ClusterPulse

process is starting or the configuration has changed), Matrix Server

chooses the best server to make the service active. The Start script is run

on this server. On all other servers configured for the monitor, the Stop

script is run to ensure that the service is not active.

Start scripts must be robust enough to run when the service is already

started, without considering this to be an error. Similarly, Stop scripts

must be robust enough to run when the service is already stopped,