Debugging staging docker compose server with pycharm

Question

I have the following docker-compose.yml file:

version: '2'
services:
    postgis:
        image: mdillon/postgis
        environment:
           POSTGRES_USER: ${POSTGIS_ENV_POSTGRES_USER}
           POSTGRES_PASSWORD: ${POSTGIS_ENV_POSTGRES_PASSWORD}
           POSTGRES_DB: ${POSTGIS_ENV_POSTGRES_DB}
        volumes:
            - /nexchange/database:/var/lib/postgresql/data
        restart: always
    app:
        image: onitsoft/nexchange:${DOCKER_IMAGE_TAG}
        volumes:
            - /nexchange/mediafiles:/usr/share/nginx/html/media
            - /nexchange/staticfiles:/usr/share/nginx/html/static
        links:
            - postgis
        restart: always
    web:
        image: onitsoft/nginx
        volumes:
            - /nexchange/etc/letsencrypt:/etc/letsencrypt
            - /nexchange/etc/nginx/ssl:/etc/nginx/ssl
            - /nexchange/etc/nginx/nginx.conf:/etc/nginx/nginx.conf
            - /nexchange/mediafiles:/usr/share/nginx/html/media
            - /nexchange/staticfiles:/usr/share/nginx/html/static
        ports:
            - "80:80"
            - "443:443"            
        links:
            - app
        restart: always

For some reason, some functionalities that work on the local container do not work on staging. I would like to configure a remote interpreter in pycharm for staging, however it seems like this setup is not currently supported.

I am using wercker + docker compose and my IDE is pycharm.

EDIT: The question is: How to setup Pycharm debugger to run on a remote host running docker compose

Answer 1

The solution, however not secure, is open the docker API on the remote target to public traffic via iptables (possibly to traffic only from specific IP, if you posses a static IP).

$ ssh $USER@staging.nexchnage.ru
oleg@nexchange-staging:~# sudo iptables -A INPUT -p tcp --dport 2376 -j ACCEPT
oleg@nexchange-staging:~# sudo /etc/init.d/iptables restart

And then simply use the docker compose feature of JetBrain PyCharm / PhpStrom or you favourite choice:

Cheers