When using Docker, sometimes you will encounter a situation where the container is missing. There are many reasons for this situation. Let’s analyze it below.
One possibility is that the container has been deleted. When we run docker ps and find that there are no containers we created before, we can run docker ps -a to view all containers. If we see that the container we created before has shown the exit status, then this means that our container has been deleted. We can delete a container by running the docker rm command, for example: docker rm container_name.
Another possibility is that the container is stopped. When we run docker ps, we see that the container we created before is in Stopped state. At this time we can run the docker start command to start it, for example: docker start container_name.
Another possibility is that the Docker service has not started. When we run docker ps, we find that nothing happens, this may be because the Docker service is not started. We can start the Docker service by running the systemctl start docker or service docker start command.
The last possibility is that the container has been restarted. When we run docker ps, we find that our container status is Restarting, which means that our container is being automatically restarted by Docker. This problem is usually caused by a process inside the container stopping unexpectedly. We can look at the container's logs to find the problem, for example: docker logs container_name.
Of course, the above are just some common problems. In fact, there may be many other reasons why the container is missing. If we don’t find a solution, we can solve the problem by reading the official Docker documentation or various community forums. .
In short, Docker is a very useful tool, but we still need to pay attention to some details when using it, especially when problems arise, we must find and solve them in time. Hope this article is helpful to everyone.
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