![]() ![]() This will cause a Docker Compose force rebuild of our application. We need the –build flag here since we made a minor code change in our NodeJS application. To do so, let’s first bring up our containers using Docker Compose Build command. Now we can test our Docker Compose Restart Policy. Testing the Docker Compose Restart Policy Hence, we add this property under the node-app section. We just want our NodeJS application to use restart: always property. version: '3'Īs you can see, the restart property is added at the Docker Compose services level.Ĭurrently, we have two services in our Docker Compose YAML file. Open the docker event in one shell and run the container with always policy with another shell. Next, we add the restart policy in our Docker Compose YAML file. Description Restarts all stopped and running services, or the specified services only. It could be Docker directly, Docker Compose. Refer to the options section for an overview of available OPTIONS for this command. There is normally another tool in charge of starting and running your container. Anything greater than 0 as a status code denotes an error status code. Restart service containers Usage docker compose restart OPTIONS SERVICE. ![]() Is there a configuration I can set on the container to stop. I want to limit the execution time of the Docker container for example, kill the container if it runs more than 20 minutes. Then get the response from the container and send it back to clients. Essentially Greengrass is sending a SIGTERM to the process running in the Run portion of the. The service receives requests from clients and create a Docker container to run the request. The next command removes all containers, which is docker remove (docker ps -a -q). ![]() In this context, 0 is the status code and typically means that the application stopped without any issues. You can restart the component and have it restart the container. To stop all of your running Docker containers, issue the command docker stop (docker ps -a -q). In order to do so, we will make a slight change in the NodeJS Application from the previous post.īasically, we using process.exit(0) to exit our container process as soon as we hit the root end-point for our application. To see one of the policies in action, we will simulate a situation where our Docker container should be restarted. Hence, to avoid the confusion, if we use the no restart policy, we have to always specify it as “no”. This is because in a YAML file, a plain no is interpreted as false. Note here that the “no” restart policy explicitly has opening and closing quotes. “no” Never attempt to restart a container even if it crashes or stops altogether always If the container stops for any reasons whatsoever, always attempt to restart it on-failure Only attempt to restart the container if it failed because of an error code unless-stopped Always restart the container unless we (the developers) stop it explicitly. Basically, each restart policy can help us take care of a particular situation with our Docker containers.īelow is a table summarizing the restart policies. With Docker Compose, we have four restart policies. In this post, we will take a look at how to use Docker Compose to restart containers automatically. ![]()
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