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17.4 Using a Trigger to Execute a Script

ClosedContext

Exec triggers launch a program or script when the event occurs. A few examples of what a script might do in response to an event include:

  • Execute an external program
  • Send a complex email to any desired recipient(s)
  • Collect diagnostics

It is important to note that when a script runs via a trigger, Moab forks and performs a direct OS exec, meaning there will be no pre-processing of the command by the shell. In addition, the script runs in a new, reduced environment without the same settings and variables as the environment from which it stemmed. The script must be able to run in the reduced environment.

To use a trigger to execute a script

  1. Create or locate the script and note its location.
  2. Create a trigger on the desired object, setting the AType to exec and the Action to location of the script or program. 
    3. JOBCFG[temp1] TRIGGER=EType=start,AType=exec,Offset=03:00,Action="/tmp/monitor.pl"

    Jobs with the temp1 template receive a trigger that executes monitor.pl three minutes after the job starts.

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