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I have docker containers. Inside them launched a process.
From the host machine the command top outputs pid of all processes launched in within containers.
How can I find a container in which the process with this PID is running?
Thank you.
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Find the running container's ID by using the docker ps command. Find the PID number of the first process in the running container by running the docker inspect command. Enter the running container by using the nsenter command.
Like it was mentioned, if you are already inside of a container, then just use ps -eaf command to see the running processes.
You can easily get the IP address of any container if you have the name or ID of the container. You can get the container names using the "Docker ps -a" command. This will list all the existing containers.
Thank you @Alex Past and @Stanislav for the help. But I did not get full answers for me. I combined them.
In summary I has got next.
First
pstree -sg <PID>
where PID is the process's PID from the command top
In output I am getting parent PID for the systemd parent process. This PID is docker container's PID.
After I execute
docker ps -q | xargs docker inspect --format '{{.State.Pid}}, {{.Name}}' | grep "^%PID%"
where %PID% is this parent PID.
In result I have docker's CONTAINER ID.
That's what I wanted
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