manager

manager

Simple daemon manager for use in docker containers.

This is a lightweight process manager primarily used for docker. It fires up N number of processes and restarts them upon exit with backoffs.

There is an optional "crash" handler which is fired if a process fails.

Its basically a very limited systemd like process manager that allows for crash reporting and restarts.

Example Config

here is an example config which demonstrates setting the log level, an error handler, and firing a few processes. This is the default config shipped in the Gravwell docker container.

[Global]
	Log-File=/opt/gravwell/log/manager.log
	Log-Level=INFO

[Error-Handler]
	Exec=/opt/gravwell/bin/crashReport

[Process "indexer"]
	Exec="/opt/gravwell/bin/gravwell_indexer -config-override /opt/gravwell/etc/gravwell.conf -stderr indexer"
	Working-Dir=/opt/gravwell
	Max-Restarts=3 #three attempts before cooling down
	CoolDown-Period=60 #1 hour
	Restart-Period=10 #10 minutes

[Process "webserver"]
	Exec="/opt/gravwell/bin/gravwell_webserver -config-override /opt/gravwell/etc/gravwell.conf -stderr webserver"
	Working-Dir=/opt/gravwell
	Max-Restarts=3 #three attempts before cooling down
	CoolDown-Period=30 #30 minutes
	Restart-Period=10 #10 minutes

[Process "searchagent"]
	Exec="/opt/gravwell/bin/gravwell_searchagent -config-override /opt/gravwell/etc/searchagent.conf -stderr searchagent"
	Working-Dir=/opt/gravwell
	Max-Restarts=3 #three attempts before cooling down
	CoolDown-Period=10 #10 minutes
	Restart-Period=10 #10 minutes

[Process "simple_relay"]
	Exec="/opt/gravwell/bin/gravwell_simple_relay -config-file /opt/gravwell/etc/simple_relay.conf -stderr simple_relay"
	Working-Dir=/opt/gravwell
	Max-Restarts=3 #three attempts before cooling down
	CoolDown-Period=10 #10 minutes
	Restart-Period=10 #10 minutes