Frequently Asked Questions
- Q
- My program never starts and supervisor doesn’t indicate any error?
- A
- Make sure the x bit is set on the executable file you’re using in
the command= line of your program section.
- Q
- I am a software author and I want my program to behave differently
when it’s running under supervisord. How can I tell if
my program is running under supervisord?
- A
- Supervisor and its subprocesses share an environment variable
SUPERVISOR_ENABLED. When your program is run under
supervisord, it can check for the presence of this
environment variable to determine whether it is running as a
supervisord subprocess.
- Q
- My command works fine when I invoke it by hand from a shell prompt,
but when I use the same command line in a supervisor program
command= section, the program fails mysteriously. Why?
- A
- This may be due to your process’ dependence on environment variable
settings. See Subprocess Environment.
- Q
- How can I make Supervisor restart a process that’s using “too much”
memory automatically?
- A
- The superlance package contains a console script that can be
used as a Supervisor event listener named memmon which helps
with this task. It works on Linux and Mac OS X.