Docker, Supervisor and Executive Director

Question

I am trying to centralize the output from supervisord and its processes using supervisor-stdout . But with this supervisor configuration:

 #supervisord.conf [supervisord] nodaemon = true [program:nginx] command = /usr/sbin/nginx stdout_events_enabled = true stderr_events_enabled = true [eventlistener:stdout] command = supervisor_stdout buffer_size = 100 events = PROCESS_LOG result_handler = supervisor_stdout:event_handler 

(Note that the configuration section of supervisor-stoud is exactly the same as in the example on supervisor-stoud ).

... and this Docker file:

 #Dockerfile FROM python:3-onbuild RUN apt-get update && apt-get install -y nginx supervisor # Setup supervisord RUN pip install supervisor-stdout RUN mkdir -p /var/log/supervisor COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf COPY nginx.conf /etc/nginx/nginx.conf # restart nginx to load the config RUN service nginx stop # Start processes CMD supervisord -c /etc/supervisor/conf.d/supervisord.conf -n 

I can create the image just fine, but running the container from it gives me:

Error: supervisor_stdout: event_handler could not be resolved in [eventlistener: stdout]

EDIT

The result of work:

supervisord -c / etc / supervisor / conf.d / supervisord.conf -n

is an:

 Error: supervisor_stdout:event_handler cannot be resolved within [eventlistener:stdout] For help, use /usr/bin/supervisord -h 

Answer 1

I had the same problem and decided to use it with Ubuntu 14.04 as the base image instead of Debian Jessie (I used python:2.7 image based on Jessie).

You can refer to this full working implementation: https://github.com/rehabstudio/docker-gunicorn-nginx .

EDIT: as @ Vin-G pointed out in his comment, perhaps because the supervisor version shipped with Debian Jessie is too old. You can try to remove it from apt and install it with pip.

Answer 2

I had the same problem, in short, you need to install the Python package which provides the supervisor_stdout:event_handler . You should be able to by running the following commands:

 apt-get install -y python-pip pip install supervisor-stdout 

If you have pip installed on this container, simply:

pip install supervisor-stdout should be enough, more information about this particular package can be found here:

https://pypi.python.org/pypi/supervisor-stdout

AFAIK, there is no debian package that the supervisor-stdout provides, so the easiest way to install it is through pip.

Hope this helps someone who comes here like me.

[Edit] As Vin-G suggested, if you still have a problem, even after going through these steps, the supervisor may be stuck in the old version. Try updating it.

Hooray!

Answer 3

Very similar to the above, but I do not think there is a complete answer.

I had to remove from apt

 apt-get remove supervisor 

Then reinstall using pip, but with pip2 since the current version of the supervisor does not support python 3

 apt-get install -y python-pip pip2 install supervisor pip2 install supervisor-stdout 

It all worked.

Although the super-preservation path is now

 /usr/local/bin/supervisord 

Hope this helps.