64 lines
1.9 KiB
Markdown
64 lines
1.9 KiB
Markdown
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page_title: Automatically Start Containers
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page_description: How to generate scripts for upstart, systemd, etc.
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page_keywords: systemd, upstart, supervisor, docker, documentation, host integration
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# Automatically Start Containers
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You can use your Docker containers with process managers like
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`upstart`, `systemd` and
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`supervisor`.
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## Introduction
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If you want a process manager to manage your containers you will need to
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run the docker daemon with the `-r=false` so that
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docker will not automatically restart your containers when the host is
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restarted.
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When you have finished setting up your image and are happy with your
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running container, you can then attach a process manager to manage it.
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When your run `docker start -a` docker will
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automatically attach to the running container, or start it if needed and
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forward all signals so that the process manager can detect when a
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container stops and correctly restart it.
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Here are a few sample scripts for systemd and upstart to integrate with
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docker.
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## Sample Upstart Script
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In this example we’ve already created a container to run Redis with
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`--name redis_server`. To create an upstart script
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for our container, we create a file named
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`/etc/init/redis.conf` and place the following into
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it:
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description "Redis container"
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author "Me"
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start on filesystem and started docker
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stop on runlevel [!2345]
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respawn
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script
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/usr/bin/docker start -a redis_server
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end script
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Next, we have to configure docker so that it’s run with the option
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`-r=false`. Run the following command:
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$ sudo sh -c "echo 'DOCKER_OPTS=\"-r=false\"' > /etc/default/docker"
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## Sample systemd Script
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[Unit]
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Description=Redis container
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Author=Me
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After=docker.service
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[Service]
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Restart=always
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ExecStart=/usr/bin/docker start -a redis_server
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ExecStop=/usr/bin/docker stop -t 2 redis_server
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[Install]
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WantedBy=local.target
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