Worker scale horizontally

[ndTEC]

In case we scale de worker using docker-compose.override.yml how could we manage the health port for each worker?

[willpower232]

Do you mean a third party service making sure your Postal server is still working? I think your server would still answer port 25 so it would work.

You could have something counting processes on the server as well I guess.

[ndTEC]

Each container is configured with network: host, therefore port 9090 can be used only by one worker container. When running multiple worker containers the health server is started only on the first one.

health server port (127.0.0.1:9090) is already in use, not starting health server

[willpower232]

oh you're trying to monitor that all the workers are running? not just that the server has at least one worker?

[ndTEC]

I want to scrape prometheus metrics from all workers.

[ndTEC]

I would recommend for the workers to test the health server port and if not available to increment.