I'm running a node.js app within a docker container (because I can't install node on our machines). My app uses the systeminformation package to get cpu utilisation, but this is cpu utilisation of the docker container. I want the CPU utilisation of a process running on the host.
Can this be done?
Use the PID namespace of the host with the --pid=host option to docker run.
From the manpage:
--pid="" Set the PID mode for the container Default is to create a private PID namespace for the container 'container:<name|id>': join another container's PID namespace 'host': use the host's PID namespace for the container. Note: the host mode gives the containerfull access to local PID and is therefore considered insecure.
