Docker ps prints empty list - docker

How can I see the list of running containers?
sh-4.2$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
sh-4.2$ docker rm filebeat
Error response from daemon: You cannot remove a running container 998f73f25e997ba9838df85e8a83b05df9f2c713580ac3e183655c8241e4e84b. Stop the container before attempting removal or force remove
I thought docker ps did, but it shows an empty list.

Related

Getting error "The container name is already in use by container "93b7..." (docker ps gives nothing) [duplicate]

This question already has answers here:
Docker - Name is already in use by container
(21 answers)
Closed last year.
I'm trying to run postgres docker:
docker run --name some-postgres -e POSTGRES_PASSWORD=123456 -d postgres
I'm getting error message:
docker: Error response from daemon: Conflict. The container name "/some-postgres" is already in use by container "93b72872c89cf7497872b0bc0e98d5a91078666945e3ca39ce5cbb36c436b5af". You have to remove (or rename) that container to be able to reuse that name.
I checked with:
sudo docker ps
And there is nothing:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
(Empty)
so, why I'm getting this error message ?
If the container name already exsits, How can I run it ?
Check this (shows all containers, includes stopped)
sudo docker ps -a
And then delete container
docker rm CONTAINER
Try running
docker ps -a you will see existing container name and remove that using docker rm some-postgres. and run the docker run command again.

Cannot stop a docker container

I am very new to docker. I am following a tutorial on it.
I can successfully build and run my docker container.
docker build .
docker run -p 3000:3000 3cd35580990c
But when I try to stop the container
docker stop ef485ea0dabd
Error response from daemon: cannot stop container: ef485ea0dabd: Cannot kill container ef485ea0dabda4939e7cc371408937174bf282a82e169c0fc71c2cf2b0b7bf74: unknown error after kill: runc did not terminate sucessfully: container_linux.go:392: signaling init process caused "permission denied"
: unknown
I got this long error about permission denied.
How can I solve this?
Your stop command is correct if you only want the container to stop. That won't remove the container though. To remove a stopped container you should use
docker container rm <id>
If the container is running (rather than stopped) you can force its removal using
docker container rm -f <id>
You can kill and remove all containers (running and stopped) using this command:
docker container rm -f $(docker ps -qa)
To see what containers you currently have you can use:
docker ps
But that only shows running containers. If you want to see stopped containers too you can do this:
docker ps -qa

Docker: Error response from daemon - why is it not showing in docker container ls?

I have read this post and I have a similar problem :
docker: Error response from daemon: Conflict. The container name "/grafana" is already in use by container "f6b2d471d737a"
and I have the same error. Why is this container not showing, when I type:
docker container ls
is there an option to show all containers ?
To see only running containers:
$ docker container ls
To see all containers:
$ docker container ls -a
-a as in all. You need to use the second command in this situation.

getting information for the existing docker containers

I am running a docker image using the following command:
sudo docker run -it -v "${pwd}:/qc/output" qc
It works perfectly then I used the following command to get the list of existing docker containers
sudo docker ps --filter ancestor=ubuntu
but it returns only headers which is the following line:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
do you know why it is empty and how I can get the information for the existing docker containers?
you will get all running containers details by command
docker ps
use docker ps -a to see all active and non-active container details

How do I kill the docker processes?

I have tried
docker kill name_of_the_process
But the error is
Error response from daemon: Cannot kill container: name_of_the_container: Container name_of_the_container is not running
There are a lot of processes when I run docker ps -a, how do I kill those, they are stopped but not killed
A stopped container is killed. There is no running process, but there is a writable container specific filesystem and some metadata remaining which allows you to debug the stopped container and restart it. To remove that, use docker container rm (or the former alias docker rm) to remove the stopped container data. e.g.
docker container ls -aqf status=exited | xargs docker container rm
docker ps Shows you the running containers. If you add the -a flag it will print out all the containers, even the ones not running.
You can not "stop" a non-running container, it is already stopped.
You can find more information here: https://docs.docker.com/engine/reference/commandline/ps/
If you wish to remove the container, you can remove it by id or name. The command for that is docker rm <id/name>
Tip: You can use the first few chars of the id to identify the container, you don't need the whole id

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