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 bring up the creation/addition page and fill in the fields:

   

   Available options:

   • Select HA Service - The service/pool that will host the docker container. In the event of a failover of this service the complete docker container will be moved with it.
   • Container Description - An optional description of the docker container.
   • Dataset - Location of compose.yaml file within selected service.
   • Contents - The compose.yaml file for the docker container. Here is an example WEB server:

   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. This will add the service in a stopped state:

   

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

   

   Note

   When a container is started for the first time there maybe a slight delay as the required images for the container are downloaded.