supervisor program:x command expansion of environment variables $(ENV_VAR)s?

Question

I would like to put configuration (in this case, site name) into supervisor environment variables, for expansion in program:x command arguments. Is this supported? The documentation's wording would seem to indicate yes. The following syntax is not working for me on supervisor-3.0 (excerpt of config file): ``` [supervisord] environment = SITE="mysite" [program:service_name] command=/path/to/myprog/myservice /data/myprog/%(ENV_SITE)s/%(ENV_SITE)s.db %(program_name)s_%(process_num)03d process_name=%(program_name)s_%(process_num)03d numprocs=5 numprocs_start=1 ``` Raises the following error: ``` sudo supervisord -c supervisord.conf Error: Format string '/path/to/myprog/myservice /data/myprog/%(ENV_SITE)s/%(ENV_SITE)s.db %(program_name)s_%(process_num)03d' for 'command' contains names which cannot be expanded ``` Reading the documentation, I expected environment variables to be available for expansion in program:x command as %(ENV_VAR)s: http://supervisord.org/configuration.html#program-x-…

Accepted Answer

I agree supervisor is not clear about this ( to me at least ).

I've found the easiest solution to execute /bin/bash -c. In your case it would be:

```
    command=/bin/bash -c"/path/to/myprog/myservice /data/myprog/${SITE}/${SITE}.db ..."
```

What do you think?

I've found inspiration here: http://blog.trifork.com/2014/03/11/using-supervisor-with-docker-to-manage-processes-supporting-image-inheritance/

supervisor program:x command expansion of environment variables $(ENV_VAR)s?

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