I used this command and got related response:
$ docker run -t -d -p 80:5004 myapp
a940b8bc522e593a83181ef95138f25dd1f3100bd6ff563d24eab7a265e9bd2a
But when I use docker ps to check the container see below response, it seems not correct (no see any info).
CONTAINER ID IMAGE COMMAND CREATED
STATUS PORTS NAMES
If I browse http://localhost/api/values on my host, I do not get the final result that I want.
Through the log I can see the error, but still not know how to fix it:System.InvalidOperationException: Unable to resolve project 'HelloMvc6' from /app/src/HelloMvc6
It seems that your container did not start properly and stopped immediately due to an error. You would probably see an exited container process when you type docker ps -a.
You can have a look at the containers console output using docker logs <containerId> to see what went wrong.
Hint: Usually you do not need the -t flag (tty) when you run the container detached in background with the -d flag.
Related
When I run my docker container in detached mode by using the following command
docker run -d -p 5000:5000 --name tmp-cntr --net="host" -v /home/project:/root/ IMAGE-NAME
it does not appear when I list the containers by
docker ps
When I list all the containers by
docker ps -a
I can see that the container has exited. However, if I try to run the container with the same name it gives following error.
docker: Error response from daemon: Conflict. The container name "/tmp-cntr" is already in use by container "4b7cf4084685ad7fcaeef3ca6a07ca594752c42cbfd6eb07850d7fe8f5289bc3". You have to remove (or rename) that container to be able to reuse that name.
Is the container running or has it exited? What is the problem in my command? Please be kind enough to point out my mistake and explain how this can be corrected.
I appreciate your help.
It means the container created but exited, There maybe something wrong with your entrypoint that the container can't start successfully.
please have a check with docker logs <container-id> to show what's wrong.
Since you can't re-run, it means it's in Exited status.
You should run docker logs tmp-cntr to see what's wrong with the current exited container and then docker rm tmp-cntr to remove it.
Also you can remove --name tmp-cntr from your docker run command to prevent the same name issues instead of removing it every time, so debug it better.
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 succefully ran hello-world using docker run command , but when I check running containers with docker ps , this container was not visble under running containers ,
Any suggestions
Thank
Rajendar
The default hello-world image from docker has no extra service running inside it so therefore exits after printing the default text. As such you cannot view it using docker ps which is command for viewing currently running containers.
To view running/stopped containers, run docker ps -a
See the image on how the docker ps and docker ps -a command show different results for the `hello-world image.
How did you run it? If I remember correctly, the hello world example just echos and quits, so running docker ps immediately afterwards won't show you anything.
Try this instead:
docker ps -n 1
That will essentially show you the most recent container you ran and its state.
Just for fun, if you really want to watch the hello-world execution at runtime...
Open up a new terminal window and run the command docker events, then keep watching what happens when you run docker run hello-world in your original terminal window.
Magically, you will see your entire container life-cycle below:
1.container create (notice the funny name= attribute of your ephemeral container name)
2.image pull
3.container init
4.container start
5.container attach
6.container died
7.container cleanup
Enjoy!
When we restart a container using 'docker restart command', docker first stops and then starts the container.
My question is when the container is stopped? I wanted to know the exit status of the container.
i dont really get what you trying to say. .but if you wanna know the exit status, you can just issue
docker ps -a
command to list all exited container with their status code,
but if you want to check it with more specific condition, you can use something like :
docker ps -a --filter 'exited=0' that mean the container exited successfully,
or
docker ps -a --filter 'exited=137' 137 code meaning a SIGKILL(9) killed them.
here s more about docker filtering reference
oh, try using some punctuation marks in your sentence next time
EXIT status can be seen by using
docker ps -a
And you can check docker logs.
docker logs CONTAINER_NAME
for more information check - Docker logs
The first time I ran my configured image, I passed in a --name option. After running the image, I stopped it. Now, it appears in the docker ps output:
vagrant#precise64:~/docker$ docker ps -a
Since it has a name, how can I restart it? It seems that the docker run command only accepts an imageid (not a containerid). And if run it again, a new container is created (which is not what I want).
To start a stopped container one could issue
docker start {name}