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Self-hosted Github Actions Runners on kubernetes

When using Action Runner Controller (ARC) to run self-host your GitHub Actions Runners. You need to ensure that the Service and Pod CIDRs of the kind cluster created by argocd-diff-preview don't overlap with your host cluster's CIDRs.

The default CIDRs are:

Service CIDR
Service 10.96.0.0/16
Pod 10.244.0.0/16

To configure kind:

  1. Create a file in your repo, for instance hack/kind.yaml, with the following content: 
    kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
networking:
  serviceSubnet: "10.80.0.0/16"
  podSubnet: "10.128.0.0/16"
  2. Add the flag --kind-options '--config /base-branch/hack/kind.yaml' to argocd-diff-preview. 
          - name: Generate Diff
        run: |
          docker run \
            --network=host \
            -v /var/run/docker.sock:/var/run/docker.sock \
            -v $(pwd)/main:/base-branch \
            -v $(pwd)/pull-request:/target-branch \
            -v $(pwd)/output:/output \
            -e TARGET_BRANCH=${{ github.head_ref }} \
            -e REPO=${{ github.repository }} \
            dagandersen/argocd-diff-preview:v0.1.8 --kind-options '--config /base-branch/hack/kind.yaml'