How to make `docker run` inherit ulimits

问题

Running a command via docker does not seem to adhere to my currently configured ulimits:

$ ulimit -t
5
~ $ sudo -- bash -c "ulimit -t"
5
~ $ sudo -- docker run --rm debian:wheezy bash -c "ulimit -t"
unlimited

How can I make it do that?

回答1:

You can set global limits in the Docker daemon config. On Ubuntu, this is managed in Upstart. Add limit cpu <softlimit> <hardlimit> to /etc/init/docker.conf and restart the daemon.

On a per container basis, you must use the --privileged flag with docker run in order to set ulimits. AFAIK there is no way to do it without --privileged.

See also Runtime constraints on CPU and memory.

回答2:

Currently (v1.5.0) these limits are inherited from the docker daemon's limits. But docker team is about to release limits per containers.

For a workaround you can set the limits inside the container like

# docker run ubuntu bash -c "ulimit -t 5; doSomething"

来源：https://stackoverflow.com/questions/25744278/how-to-make-docker-run-inherit-ulimits