Running docker command in a Java application executing in a docker container

Question

I am creating a Spring Boot monitoring agent that collects docker metrics. The agent can be attached through POM dependency to any client Spring Boot application that runs inside a docker container.

In the agent, I am trying to programatically run docker stats

But, it fails to execute because the docker container doesn't have docker client installed in it.

So how can I run docker commands in docker container? Please note, I can't make changes to the Dockerfile of client.

Are you trying to run multiple commands inside the docker container? — Keaz
– Keaz, Commented Nov 15, 2018 at 3:10

kj007 · Accepted Answer · 2018-11-15 02:47:25Z

0

You may execute docker commands within the container by defining the docker socket in the container.

run the container and mount the 'docker.sock' in the following manner:

docker run -v /var/run/docker.sock:/var/run/docker.sock ...

so mainly you have to mount docker.sock to order to run docker commands within container.

answered Nov 15, 2018 at 2:47

kj007

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