MediaWiki on Kubernetes
We will provide a MediaWiki platform with the following characteristics:
- self-healing infrastructure
- high-availability with multi-server failover
- flexible storage backends
- multi-cloud compatibility
To do so, we'll need to implement Kubernetes.
We will almost certainly leverage Ansible as an orchestration tool. In a recent blog post on ansible.com, Jeff Geerling (@geerlingguy) answers the question: "How Useful is Ansible in a Cloud-native Kubernetes Environment? The short answer is that Ansible can be used for:
- Container Build (Ansible-bender)
- Cluster Management (Kubespray)
- Application Lifecycle (Use Ansible to build Operators with the Operator SDK to handle deployment, upgrades, backups, etc.)
High-level outline[edit | edit source]
- Build image. The WMF official images at Docker Hub do not even include a true database; never mind the extensions we need.
- With ansible-bender we can use ansible-playbook + buildah to create our image.
- Publish images to Docker Hub
- Create organization account at Docker Hub; add freephile
- Create service account at GitHub - to prevent access to private repos through Docker Hub
- Add automated builds and automated testing
Docker (default in kublet ) is just one of many container runtimes that can be used with Kubernetes. The others include containerd and CRI-O.