CODEWITHSUNDEEP
docker
Jan Hrcek
Jan Hrcek

Reputation: 673

Is there a way to find running time of containers when using `docker run -- rm`

I work on an application which needs to run a lot of short-lived containers using a command like docker run --rm MYIMAGE

I need to use --rm to cleanup container resources after it exits to avoid running out of system resources over time.

Now I'd like to find out how long those containers are running on average. Is there some system level logs about what containers were executed and for how long they were running? Or does this information disappear after container is removed?

Upvotes: 1

Views: 929

Answers (1)

Rory McCune
Rory McCune

Reputation: 1471

The Docker daemon does record container creation and deletion via events . Those logs have timestamps and canonical references to container names, so could be used for your purposes.

Unfortunately there isn't (AFAIK) a good way to persist Docker events within docker itself (they can't be logged to a file), however you could use something like

curl --no-buffer -XGET --unix-socket /var/run/docker.sock http://localhost/events

and redirect that somewhere to get a log of Docker events created on a host.

Upvotes: 1

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