Docker restart container12/2/2023 ![]() ![]() Name is the Restart Policy name! and has no value that means no restart policy is set and the default value is used. The difference is if you are trying to do the operation on a container that may or may not be running, docker restart is more robust in this situation. If the container is already stopped, it is functionally the same as docker start. You can see the container details in which RestartPolicy has old value yet: # docker inspect | fgrep -i restart -A 5 The docker restart command will issue a stop and then a start. If you change Restart Policy in the YAML file: # cat docker-compose.yml If the docker container has been created before, it's may not be updated automatically by changing it in the docker compose YAML file. To understand restart policies better, lets see what happens when we use the always restart policy with this same container. Restart policies for swarm services are configured differently Its possible to automatically restart crashed containers by specifying a restart policy when initiating the container. Restart policies only apply to containers. This is another attempt to prevent a restart loop. If you manually stop a container, its restart policy is ignored until the Docker daemon restarts, or the container is manually restarted. This prevents a container that does not start at all from going into a restart loop. In this case, starting successfully means that the container is up for at least 10 seconds and Docker has started monitoring it. NOTE: Keep the following in mind when using restart policiesĪ restart policy only takes effect after a container starts successfully. If you had an already running container that you wanted to change the restart policy for, you could use the docker update command to change that, and the below command will ensure all currently running containers will be restarted unless stopped $ docker update -restart unless-stopped $(docker ps -q) Unless-stopped Similar to always, except that when the container is stopped (manually or otherwise), it is not restarted even after the Docker daemon restarts. If it is manually stopped, it is restarted only when the Docker daemon restarts, or the container itself is manually restarted. Wasn't the containers started, even though the daemon is running?Īlways Always restart the container if it stops. Suddenly all containers are booted up and I see the list. If I enter my serverĪt this moment, type sudo docker ps to list my running containers, WITH RESTART: ALWAYS turned on DOES NOT START. But for some reasons the containers I had running After this restart the dockerĭaemon is restarted. Then the OS updates itselfĪutomatically and restarts itself. ![]() Unless I'm missing some vital thing in the documentation, this command should restart the container even if the docker daemon is restarted (after an os reboot). Not sure what is unclear about my question, restart: always is turned on. Whats up with that and how do I fix it so my containers automatically restarts after an update? But if I just do $ sudo docker ps all of the containers starts at once. I have some containers which all of them have the always restart value in the docker-compose file like this: version: "3.7"Īs soon as the OS (Flatcar Linux / CoreOS) has updated itself none of the containers restart. ![]()
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