Docker

Clustering a Docker Container

These steps show the process of creating a Clustered docker container. The container will be created using a standard docker compose.yaml file.

1. Navigate to HA-Cluster -> Docker in the webapp:

   

2. Click Cluster a Docker application to get to the creation/addition page and fill in the fields:

   

   Available options:

   • Select HA Service - Select the service/pool that will host the docker container. In the event of a failover
   • Container Description - An optional description of the docker container
   • Location of compose.yaml file within selected service - The path in the selected pool/service to save the compose.yaml
   • Contents of compose.yaml file - Enter the contents of the compose.yaml file for the container
   • An Example compose.yaml:

   services:
     apache:
      image: httpd:latest
      container_name: my-apache-app
      ports:
       - 8080:80
      volumes:
       - ./website:/usr/local/apache2/htdocs
      restart: no
   

   Warning

   When adding your content, make sure to add restart: no to your service configurations. RSF-1 will manage the restart of clustered containers in the event of a failover

   

3. When finished click Create.

   

4. By default the container will remain stopped until started. Click the Start button to spin up the container.