stefanprodan / gitops-linkerd

Progressive Delivery with Linkerd, Flagger and Flux v2

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gitops-linkerd

Progressive Delivery with Linkerd, Flagger and Flux v2

Prerequisites

In order to install the workshop prerequisites you'll need a Kubernetes cluster 1.18 or newer with Load Balancer support and RBAC enabled.

Install Flux v2

Install the CLI on MacOS and Linux using Homebrew run:

brew install fluxcd/tap/flux

Verify that your cluster satisfies the prerequisites with:

$ flux check --pre

► checking prerequisites
✔ kubectl 1.19.2 >=1.18.0
✔ Kubernetes 1.18.9 >=1.16.0
✔ prerequisites checks passed

Install the controllers on your cluster:

$ flux install

✚ generating manifests
✔ manifests build completed
► installing components in flux-system namespace
✔ install completed
◎ verifying installation
✔ source-controller ready
✔ kustomize-controller ready
✔ helm-controller ready
✔ notification-controller ready
✔ install finished

Infrastructure setup

Create a source that points to this repository:

flux create source git gitops-linkerd \
--url=https://github.com/stefanprodan/gitops-linkerd \
--branch=main

Create a Kustomization to reconcile Linkerd on your cluster:

flux create kustomization linkerd \
--source=gitops-linkerd \
--path="./infrastructure/linkerd" \
--prune=true \
--validation=client \
--interval=1m \
--health-check="Deployment/linkerd-proxy-injector.linkerd"

Configure Flagger reconciliation specifying Linkerd as a dependency:

flux create kustomization flagger \
--depends-on=linkerd \
--source=gitops-linkerd \
--path="./infrastructure/flagger" \
--prune=true \
--validation=client \
--interval=1m \
--health-check="Deployment/flagger.linkerd"

Configure Contour reconciliation specifying Linkerd as a dependency:

flux create kustomization contour \
--depends-on=linkerd \
--source=gitops-linkerd \
--path="./infrastructure/contour" \
--prune=true \
--validation=client \
--interval=1m \
--health-check="Deployment/contour.projectcontour" \
--health-check="DaemonSet/envoy.projectcontour"

Workloads setup

Configure the frontend workload with A/B testing deployment strategy and the backend workload with progressive traffic shifting:

flux create kustomization workloads \
--depends-on=linkerd \
--source=gitops-linkerd \
--path="./workloads" \
--prune=true \
--validation=client \
--interval=1m
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Progressive Delivery with Linkerd, Flagger and Flux v2

License:Apache License 2.0