General Elastic Docker Image Questions

[laubnyc (Laura Buchanan)]

Q1:

Trying to better understand the Elastic Docker images. E.g., if you were to build a container with

docker pull docker.elastic.co/elasticsearch/elasticsearch:6.2.3

This container could run indefinitely. Conversely, If you were to build a container with

docker pull busybox docker's "hello-world!"

the container would be created, "hello-world!" print to terminal, and the container stops. What's going on behind the scenes that prevents the elasticsearch container from stopping?

Q2:

I have customized ELK images that are passed into a multi-stage docker build. Once my later-stage containers are built (via my customized ELK images), is there any reason I would want to leave the earlier-stage containers running? If not, what would be the best way to stop these containers?

Thanks!

[warkolm (Mark Walkom)]

@laubnyc

What's going on behind the scenes that prevents the elasticsearch container from stopping?

The java process that is Elasticsearch is running
If for some reason it were to stop, like a bad config prevented it from fully starting up, then it would exit.

I can't answer the second question as it's not clear to me what's happening.