You can stop your docker compose services by running: $ docker-compose stop Note that we made good use of ENV variables in the docker-compose.yml file, to enable the wordpress service to authenticate with the mysql database server. A common use of the run command is to return the environment variables used by the service: $ docker-compose run wordpress env This would return the uptime of the container. For example we could use: $ docker-compose run wordpress uptime The Docker-Compose Run Commandĭocker-compose has a run command, which can be used to run one off commands against a service. This means that the containers will always restart if the docker host is rebooted. Note that in the docker-compose.yml file we specify that the containers created should always restart: restart: always Success! We now have WordPress being served from the wordpress container, whilst it’s database will be provided by the mysql container.
#HOW TO STOP DOCKER NETWORK AND START INSTALL#
Going to the public IP address – – on the docker host results in us being able to see the wordpress install wizard: We can also use the docker-compose ps command: $ docker-compose psĭocker volume list shows that the two volumes have been created: $ docker volume listįor the wordpress container, port 80 was exposed (port 8000 on the docker host): ports: Running docker ps now will show the newly created running containers: $ docker psĬONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESĭ0c119d3af19 wordpress:latest "docker-entrypoint.s…" 31 hours ago Up 25 minutes 0.0.0.0:8000->80/tcp composetest_wordpress_1ĭcd325fd82ac mysql:5.7 "docker-entrypoint.s…" 31 hours ago Up 25 minutes 3306/tcp, 33060/tcp composetest_db_1 In this example I have also used the -d flag which is detached mode, meaning that the containers will run in the background. We use the docker compose up command to create the containers specified in the docker-compose.yml file: $ docker-compose up -d Note: Whenever we are running docker-compose commands for a project, we need to be working in the directory that contains that project’s docker-compose.yml file.
#HOW TO STOP DOCKER NETWORK AND START HOW TO#
You can read about how to create a docker-compose.yml file here. We are also specifying two docker volumes, which will be created to store the mysql databases and the wordpress content. This file defines the docker containers we want to create, in this case we are using the mysql:5.7 and the wordpress:latest images. $ mkdir composetestįor this example I will use the following docker-compose.yml file: version: '3.3' Rather than build a custom image using a dockerfile, I will be using two docker images from the docker hub – the mysql image and the wordpress image.įirst of all, a directory needs to be created where we can store the docker-compose.yml file for the project. The example I am going to use is to build a docker compose file that defines the containers needed to run a WordPress website. We will look at some of these commands as we work through some docker-compose examples. You can read about these commands in detail here. Version Show the Docker-Compose version information Scale Set number of containers for a service Port Print the public port for a port binding We can see all the commands available by running docker-compose –help: build Build or rebuild servicesīundle Generate a Docker bundle from the Compose fileĬonfig Validate and view the Compose fileĭown Stop and remove containers, networks, images, and volumesĮvents Receive real time events from containersĮxec Execute a command in a running container We had a look at the version command earlier, which simply prints the version of docker-compose. Docker Compose Commandsĭocker-compose has a bunch of commands. Looks good! Now we can move on to some examples of how docker compose can be used.
This can be done with: sudo chmod +x /usr/local/bin/docker-composeįinally, we can test that everything is working as it should by running: $ docker-compose -versionĭocker-compose version 1.23.2, build 1110ad01 Once downloaded, you must make the file executable. This downloaded the docker-compose tool to /usr/local/bin.
On my system I did this by running: sudo curl -L "$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose How to Install Docker Composeįirst of all we need to grab the software. To start, let’s have a look at how we can install Docker Compose on a linux docker host.
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