{"id":2209,"date":"2016-03-14T14:17:25","date_gmt":"2016-03-14T22:17:25","guid":{"rendered":"http:\/\/networkeffects.ca\/?p=2209"},"modified":"2016-03-17T07:19:12","modified_gmt":"2016-03-17T15:19:12","slug":"docker-cloud-byon-docker-compose","status":"publish","type":"post","link":"https:\/\/networkeffects.ca\/?p=2209","title":{"rendered":"Docker Cloud BYON & Docker Compose"},"content":{"rendered":"
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GIF: http:\/\/giphy.com\/gifs\/ship-canal-container-9h92ggQve1Wxy<\/p><\/div><\/p>\n

Late last year, Docker snapped up cross-cloud container management service Tutum<\/a>, but it wasn’t clear how the acquired company’s handiwork would manifest under the Docker brand.\u00a0Tutum was\u00a0built from the ground up as a Docker tool. It gives visibility into containers, and enables a team to create, start, terminate or redeploy as needed. It also provides a dashboard view of all of the containers under team\u00a0management. \u00a0Tutum is now Docker Cloud<\/a>. Docker Cloud is a new service by Docker that implements all features previously offered by Tutum plus integration with Docker Hub Registry<\/a>.<\/p>\n

A group of us in BC are looking for ways\u00a0we can\u00a0provide a more sustainable opened tech infrastructure \u00a0to BC higher education<\/a>. \u00a0We have begun looking for approaches to shared WordPress hosting. \u00a0I have been playing with Stackfiles<\/a> and Docker Compose<\/a> for the last few weeks and starting to get a clearer picture of how we might sustainably provide hosting for both dev and production WordPress hosting\u00a0for BC open education initiatives.<\/p>\n

As well as deploying and managing hosts on the supported cloud providers (EC2<\/a>, Azure<\/a>, etc), Docker Cloud can use any Linux host as a node to deploy containers to. For this, you install an agent\u00a0which will allow you to connect the\u00a0Docker Cloud dashboard to your infrastructure. I went ahead and connected our new EduCloud<\/a> node to Docker Cloud last week and started experimenting with how services are managed. \u00a0Services\/sites can be setup\u00a0directly quickly using the\u00a0Docker Cloud web interface. \u00a0Services\/sites are managed via \u2018stacks\u2019 which are defined using Docker Compose<\/a>. \u00a0Compose is a tool for defining and running multi-container Docker applications. \u00a0This ‘stackfile’<\/a> contains the instructions required to pull from required repositories (eg: Docker Hub, Github, etc) and\u00a0configure your application\u2019s services. Then, using a single command, you can create and start all the services.<\/p>\n

Once a stackfile is defined, it can be used to deploy and\/or redeploy as many copies of an application as you need. \u00a0I found a ‘ready to deploy’ WordPress stackfile\u00a0at this registry<\/a>:<\/p>\n

wordpress:<\/em>
\n image: tutum\/wordpress-stackable:latest<\/em>
\n links: <\/em>
\n – db<\/em>
\n ports:<\/em>
\n – “80:80”<\/em>
\n environment:
\n<\/em>DB_NAME: wordpress<\/em>
\n DB_USER: admin<\/em>
\n DB_PASS: “**ChangeMe**”<\/em>
\ndb:<\/em>
\n image: tutum\/mysql:5.5<\/em>
\n environment:<\/em>
\n MYSQL_PASS: “**ChangeMe**”<\/em><\/p>\n

To test out Docker Cloud\/Compose on EduCloud\u00a0I decided to reserve the domain opened.ca, create 2 subdomains, and map a separate WordPress installation to each subdomain. \u00a0I made 2 DNS entries and pointed them all to our EduCloud host.<\/p>\n