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Get Started with gitops using Flux

Bootstrap Flux to a Kubernetes cluster.

Before you begin

To follow the guide, you need the following:

Objectives

  • Bootstrap Flux on a Kubernetes Cluster

Setup Flux with Github

git checkout step-3.apps.podinfo
gitops/assist.sh setup 
gitops/assist.sh test
gitops/assist.sh status

Watch and Monitor Logs

Run the bootstrap command:

watch flux get kustomizations
flux get kustomizations --watch
flux logs --all-namespaces --follow --tail=10
kubectl get gitrepositories -n flux-system

Note: You can also use scripts/iterm2/watch.sh to watch the logs and flux status.

Test Infrastructure

  1. Test weave dashboard is running 
    gitops/validators/weave-dashboard.sh test
  2. Test Nginx Ingress Controller is running with httpd 
    gitops/validators/httpd.sh test
  3. Test app podinfo is running 
    gitops/validators/podinfo.sh test

For Reference

Below section explains the steps that is wrapped in assist.sh script

Check your Kubernetes cluster

Check you have everything needed to run Flux by running the following command:

flux check --pre

Export your credentials

Export your GitHub personal access token and username:

git checkout main
local-dev/iaac/env/env.sh teardown
local-dev/iaac/env/env.sh setup
source .env

Install Flux onto your cluster

Run the bootstrap command:

  export BRANCH="main"
  flux bootstrap github \
    --owner=$GITHUB_USER \
    --repository=$GITHUB_REPO \
    --branch=$GITHUB_BRANCH \
    --path=./gitops/clusters/dev \
    --private=false \
    --personal=true

The bootstrap command above does following:

  • Creates a git repository gitops-experiments on your GitHub account
  • Adds Flux component manifests to the repository
  • Deploys Flux Components to your Kubernetes Cluster
  • installs Istio using the Istio base, istiod and gateway Helm charts
  • waits for Istio control plane to be ready
  • creates the Istio public gateway
  • installs the nginx ingress controller
  • installs the weave dashboard
  • installs the cert-manager and letsencrypt cluster issuer
  • install the podinfo app
  • creates the podinfo ingress route using the Istio gateway