Running the docker registry with below command always throws an error:
dev:tmp me$ docker run \
-d --name registry-v1 \
-e SETTINGS_FLAVOR=local \
-e STORAGE_PATH=/registry \
-e SEARCH_BACKEND=sqlalchemy \
-e LOGLEVEL=DEBUG \
-p 5000:5000 \
registry:0.9.1
Error response from daemon: Conflict. The name "registry-v1" is already in use by container f9e5798a82e0. You have to delete (or rename) that container to be able to reuse that name.
How can I prevent this error ?
I got confused by this also. There are two commands relevant here:
docker run # Run a command in a **new** container
docker start # Start one or more stopped containers
That means you have already started a container in the past with the parameter
docker run --name registry-v1 ...
You need to delete that first before you can re-create a container with the same name with
docker rm registry-v1
When that container is sill running you need to stop it first before you can delete it with
docker stop registry-v1
Or simply choose a different name for the new container.
To get a list of existing containers and their names simply invoke
docker ps -a
Here what i did, it works fine.
step 1:(it lists docker container with its name)
docker ps -a
step 2:
docker rm name_of_the_docker_container
When you are building a new image you often want to run a new container each time and with the same name. I found the easiest way was to start the container with the --rm option:
--rm Automatically remove the container when it exits
e.g.
docker run --name my-micro-service --rm <image>
Sadly it's used almost randomly in the examples from the docs
Edit: Read Lepe's comment below.
Just to explain what others are saying (it took me some time to understand) is that, simply put, when you see this error, it means you already have a container and what you have to do is run it. While intuitively docker run is supposed to run it, it doesn't. The command docker run is used to only START a container for the very first time. To run an existing container what you need is docker start $container-name. So much for asking developers to create meaningful/intuitive commands.
You have 2 options to fix this...
Remove previous container using that name, with the command docker rm $(docker ps -aq --filter name=myContainerName)
OR
Rename current container to a different name i.e change this portion --name registry-v1 to something like --name myAnotherContainerName
You are getting this error because that container name ( i.e registry-v1) was used by another container in the past...even though that container may have exited i.e (currently not in use).
Cause
A container with the same name is still existing.
Solution
To reuse the same container name, delete the existing container by:
docker rm <container name>
Explanation
Containers can exist in following states, during which the container name can't be used for another container:
created
restarting
running
paused
exited
dead
You can see containers in running state by using :
docker ps
To show containers in all states and find out if a container name is taken, use:
docker ps -a
Here is how I solved this on ubuntu 18:
$ sudo docker ps -a
copy the container ID
For each container do:
$ sudo docker stop container_ID
$ sudo docker rm container_ID
removing all the exited containers
docker rm $(docker ps -a -f status=exited -q)
The Problem: you trying to create new container while in background container with same name is running and this situation causes conflicts.
The error would be like:
Cannot create continer for service X :Conflict. The name X is already in use by container abc123xyz. You have to remove ot delete (or rename) that container to be able to reuse that name.
Solution rename the service name in docker-compose.yml or delete the running container and rebuild it again (this solution related to Unix/Linux/macOS systems):
get all running containers sudo docker ps -a
get the specific container id
stop and remove the duplicated container / force remove it
sudo docker stop <container_id>
sudo docker rm <container_id>
or
sudo docker rm --force <container_id>
You can remove it with command sudo docker rm YOUR_CONTAINER_ID, then run a new container with sudo docker run ...;
or restart an existing container with sudo docker start YOUR_CONTAINER_ID
I was running into this issue that when I run docker rm (which usually works) I would get:
Error: No such image
The easiest solution to this is removing all stopped containers by running:
docker container prune
I have solved the issue by doing following steps and I hope it helps.
Type docker ps -a to list all the containers in your system.
Check the NAMES part where you have initialized your docker container.
Then type docker rm --force name_of_container
Install the docker container as you wish.
I had problem using NIFI and I have removed and reinstalled using docker. Good luck.
TL:DR;
List all containers:
docker ps -a
Remove the concerned container by id:
docker container rm <container_id>
I'm just learning docker and this got me as well. I stopped the container with that name already and therefore I thought I could run a new container with that name.
Not the case. Just because the container is stopped, doesn't mean it can't be started again, and it keeps all the same parameters that it was created with (including the name).
when I ran docker ps -a that's when I saw all the dummy test containers I created while I was playing around.
No problem, since I don't want those any more I just did docker rm containername at which point my new container was allowed to run with the old name.
Ah, and now that I finish writing this answer, I see Slawosz's comment on Walt Howard's answer above suggesting the use of docker ps -a
The OP's problem is the error. Deleting state isn't the only solution - or even a good one. The problem is docker run isn't re-entrant, and docker start is impotent w/o run. So we have to combine them.
For example to run Postgres w/o destroying previous state, try this:
docker start postgres || docker run -d -p 5432:5432 --name postgres -e POSTGRES_PASSWORD=password postgres:13-alpine
Ok, so I didn't understand either, then I left my pc, went to do other things, and upon my return, it clicked :D
You download a docker image file. docker pull *image-name* will just pull the image from docker hub without running it.
Now, you use docker run, and give it a name (e.g. newWebServer).
docker run -d -p 8080:8080 -v volume --name newWebServer image-name/version
You perhaps only need docker run --name *name* *image*, but the other stuff will become useful quickly.
-d (detached) - means the container will exit when the root process used to run the container exits.
-p (port) - specify the container port and the host port. Kind of the internal and external port. The internal one being the port the container uses, and the external one is the port you use outside of it and probably the one you need to put in your web browser if that's how you access your app.
--name (what you want to call this instance of the container) - you could have several instances of the same container all with different names, which is useful when you're trying to test something.
image-name/version is the actual image you want to create the container from. You can see a list of all the images on your system with docker images -a. You may have more than one version, so make sure you choose the correct one/tag.
-v (volume) - perhaps not needed initially, but soon you'll want to persist data after your container exits.
OK. So now, docker run just created a container from your image. If it isn't running, you can now start it with it's name:
docker start newWebServer
You can check all your containers (they may or may not be running) with
docker ps -a
You can stop and start them (or pause them) with their name or the container id (or just the first few characters of it) from the CONTAINER ID column e.g:
docker stop newWebServer
docker start c3028a89462c
And list all your images, with
docker images -a
In a nutshell, download an image; docker run creates a container from it; start it with docker start (name or container id); stop it with docker stop (name or container id).
I had this issue because I had two or more containers with the same container_name in the docker-compose.yml file.
Simple Solution: Goto your docker folder in the system and delete .raw file or docker archive with large size.
For me, the issue was that I used an image name more than once in the dockerfile.
This happened to me on the docker tutorial! The port I tried to use was taken, but docker still created.. an image? A process to run docker? I'll find out soon. Anyways, to choose a different port, I had to remove the older image, and then docker run again.
Sometimes a tutorial can be too terse. What you want is concise, not terse, or even succinct.
I need to run more than 70 docker containers at once. Later, these containers need to be stopped.
At the moment I can docker stop all of them with the shell command docker stop $(docker ps -f since=<last docker before>). It works OK, but if there are any containers started after mine, I have a problem as the above code will stop them too.
Is there any way I can close all of running containers with some kind of specific search?
I know there is an docker ps -f label=<some label>, but I just haven't figured out on how to use it yet.
If you're launching many containers at the same time, launch them all with
docker run --label=anyname other-docker-args-of-yours image:tag
And when you want to delete all your containers just do
docker stop $(docker ps -f label=anyname | awk 'NR>1 {print$1}')
where anyname is the label name you provide during the docker run command and
awk 'NR>1 {print$1}' ignores the column header CONTAINER_ID and just prints the values alone.
Edit-1:
I later realized that you can achieve the list of Container_ID without awk as well. I'd consider using the below line.
docker stop `docker ps -qaf label=anyname`
If you want to remove all stoppped containers also, then include a within the options, like instead of -qf use -qaf.
-q to print container IDs alone.
-a for all containers including stopped.
When I launch docker, it launch by default a few containers that I have build in the past.(I've use docker-compose at the time, but deleted the repo since)
I kill them, but each time i restart docker, they are back.
What can I do ?
I know there is something like "docker system prune",
but I would like to delete the less possible .
You can try running docker ps -a to get a list of all containers including the ones which are not running but stopped.
You can then docker rm each container you do not wish to start on each docker restart.
Use docker ps to see what containers are running.
Use this command to kill/stop all running containers.
docker rm $(docker ps -a -q)
Use docker images to get list of all images.
Use docker rmi <image_id> to delete desired image.
when calling docker ps the list is empty, although I got an id:
(dcbb6aeaa06ba43fcb.....)
My steps:
Step 1: I created an image (imagekommando) of an running js.file:
Step 2: I created a container (in background) based on my image
docker run -d --name containerkommando imagekommando
I got an id! (container-id??)
Step 3: But docker ps shows empty list:
But when I repeat Step 2, I'm told, that the container (containerkommando) already exists:
docker run -d --name containerkommando imagekommando
Could you help me, understanding the logic behind?
And how can I get the container running (by ID)?
That means that the docker container exited with an error but clean up is required. With --rm option you can tell the docker to remove the container when the container has exited.
docker run --rm .....
Also to check the reason for the container exiting...you can use
docker logs <container_id>
What probably takes place here:
docker run ... creates and starts your container
your container exits
docker ps doesn't list stopped containers (default shows just running), so it made you think that it's not there.
docker run ... fails because you are trying to create and run a container with a name that already exists.
Further reading:
What are the possible states for a docker container?
Why docker container exits immediately
In Docker, a container is automatically exited when the task is finished. You have to specify a correct entrypoint to keep your docker container up.
You can check the exited containers with the command docker ps -a. This exited container will prevent you from using the name again.
So, you may want to use docker rm <container-name> before creating your new container. In a test environement, you can also use docker system prune to clean all unused container/networks.
docker ps only shows the active containers (the running ones).
Your container most probably exited right after you started it. You can use the container ID and do docker logs <container-id> to examine the reason why the container failed.
If you want to see the stopped containers together with the running containers you can do docker ps -a to get a list of all these.
Execute
docker logs <CONTAINER ID>
to view the logs of docker container run.
I faced a similar issue found out there was space issue win my docker. After clearing space the container was able to run.
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