your elastic friend to start supervisord processes based on cpu cores available
Project description
Mr.Rubber - your elastic friend
Mr.Rubber is a supervisord event listener. When rubber is started it will dertmine how many processes to keep running based on its settings and by detecting the number of cores on the system. It will start or stop processes which match a spec to match the nominated process count.
Options are:
- –programs (-p):
Spec for which program names to control. Glob syntax such as “instance*” is supported.
- –num (-n):
The number of processes to run. Defaults to “auto” which will set this to the number of cpu cores detected when rubber first starts
- –offset (-o):
A number to modify the –num argument by. For instance if –num=auto and –offset=-2 and the detected cores was 4 then the number of processes set to run would be 2.
For example if you are using buildout with supervisor you could do the following
[supervisor] recipe=collective.recipe.supervisor plugins = mr.rubber programs = 11 instance1 ${buildout:directory}/bin/instance1 [console] ${instance1:location} true 12 instance2 ${buildout:directory}/bin/instance2 [console] ${instance2:location} true 13 instance3 ${buildout:directory}/bin/instance3 [console] ${instance3:location} true 14 instance4 ${buildout:directory}/bin/instance4 [console] ${instance4:location} true eventlisteners = rubber SUPERVISOR_STATE_CHANGE_RUNNING ${buildout:bin-directory}/rubber [-p instance* -o 0 -n auto]
History
1.0 (11-10-11)
Initial working version released