GitOps Core

This is complicated, where should I go?

Depending on what you're trying to do, you'll need to go to the appropriate directory to affect changes.

• bases
  • Core structure of Kubernetes Kustomizations, no environment specific configuration, changes here apply to ALL clusters, production included.
• overlays
  • Environment specific configuration of Kustomizations from the bases directory.
• clusters
  • Informs Flux what it should be deploying, each instance of Flux monitors a different subdirectory here.

Bootstrapping and Upgrading

Bootstrapping

Flux gets installed by Chef during the Cluster creation phase with a set of pre-defined YAML files, once Flux syncs with this repository it'll upgrade itself to whatever is defined here and deploy all relevant projects.

Upgrading

Flux can be upgraded in Dev with the following command

$ export GITHUB_TOKEN=<token>
$ flux bootstrap github \
          --components-extra=image-reflector-controller,image-automation-controller \
          --owner=binkhq \
          --repository=gitops \
          --branch=master \
          --path=clusters/uksouth-dev

We then use the following cp command to copy the manifest changes to all other environments (fish syntax):

$ for i in clusters/*
       cp clusters/uksouth-dev/flux-system/gotk-components.yaml $i/flux-system/gotk-components.yaml
  end