Process Manager

Introduction

• Motivation is to provide an operating system independent layer for starting and stopping processes on distributed machines and for notification of processes crashing, etc.
• A single, partition independent, pmg_agent process runs on each machine. At present this is started by rsh/ssh when the DAQ is started, but someday may be started automatically at boot time?
• pmg clients request the pmg_agent to start processes and can ask for notification of process termination.
• Applications normally defined in the database (but can also be started by providing all information required).
• Agent needs all the required environment variables defined somehow. Maybe via the database or via shell rc script in the account which starts the agent.
• In general applications required by a partition are started by defining them as managed applications in the database.