105-devspace-vcluster-argo.sh

# Source: https://gist.github.com/ed8ad113fff4322ef309198d5455687f

##############################################################################################
# Full App Lifecycle In Kubernetes With Argo CD, DevSpace, vCluster, k3d, and GitHub Actions #
# https://youtu.be/uU-EAQ8Vbvk                                                               #
##############################################################################################

# Referenced videos:
# - How To Create Virtual Kubernetes Clusters With vcluster By loft: https://youtu.be/JqBjpvp268Y
# - DevSpace - Development Environments in Kubernetes: https://youtu.be/nQly_CEjJc4
# - Github Actions Review And Tutorial: https://youtu.be/eZcAvTb0rbA
# - Argo CD - Applying GitOps Principles To Manage Production Environment In Kubernetes: https://youtu.be/vpWQeoaiRM4
# - K3d - How to run Kubernetes cluster locally using Rancher k3s: https://youtu.be/mCesuGk-Fks
# - GitHub CLI - How to manage repositories more efficiently: https://youtu.be/BII6ZY2Rnlc

#########
# Setup #
#########

# Replace `[...]` with the GitHub organization or user
export GITHUB_ORG=[...]

# Replace `[...]` with the GitHub token
export GITHUB_TOKEN=[...]

# Watch https://youtu.be/BII6ZY2Rnlc if you are not familiar with GitHub CLI
gh repo fork vfarcic/devspace-vcluster-argocd-demo \
    --clone

cd devspace-vcluster-argocd-demo

# Create a Kubernetes cluster with an Ingress Controller

# Replace `[...]` with the external IP of the Ingress service
export INGRESS_HOST=[...]

kubectl create namespace prs

kubectl create namespace production

# Replace `[...]` with the Docker Hub token
export DOCKERHUB_TOKEN=[...]

# Replace `[...]` with the Docker Hub user
export DOCKERHUB_USERNAME=[...]

gh secret set \
    DOCKERHUB_TOKEN -b$DOCKERHUB_TOKEN \
    --repo $GITHUB_ORG/devspace-vcluster-argocd-demo

gh secret set \
    DOCKERHUB_USERNAME -b$DOCKERHUB_USERNAME \
    --repo $GITHUB_ORG/devspace-vcluster-argocd-demo

gh secret set GH_TOKEN -b$GITHUB_TOKEN \
    --repo $GITHUB_ORG/devspace-vcluster-argocd-demo

gh secret set GH_ORG -b$GITHUB_ORG \
    --repo $GITHUB_ORG/devspace-vcluster-argocd-demo

# Replace the value with the path to Kube config
export KUBECONFIG_PATH=~/.kube/config

gh secret set KUBE_CONFIG  \
    --repo $GITHUB_ORG/devspace-vcluster-argocd-demo \
    < $KUBECONFIG_PATH

cat kustomize/overlays/production/ingress.yaml \
    | sed -e "s@host: .*@host: devops-toolkit.$INGRESS_HOST.nip.io@g" \
    | tee kustomize/overlays/production/ingress.yaml

git add .

git commit -m "Personalization"

git push

cd ..

#################
# Setup Argo CD #
#################

# Watch https://youtu.be/vpWQeoaiRM4 if you are not familiar with GitHub CLI
helm repo add argo \
    https://argoproj.github.io/argo-helm

helm repo update

helm upgrade --install \
    argocd argo/argo-cd \
    --namespace argocd \
    --create-namespace \
    --set server.ingress.hosts="{argo-cd.$INGRESS_HOST.nip.io}" \
    --set server.ingress.enabled=true \
    --set server.extraArgs="{--insecure}" \
    --set controller.args.appResyncPeriod=30 \
    --wait

export PASS=$(kubectl \
    --namespace argocd \
    get secret argocd-initial-admin-secret \
    --output jsonpath="{.data.password}" \
    | base64 --decode)

argocd login \
    --insecure \
    --username admin \
    --password $PASS \
    --grpc-web \
    argo-cd.$INGRESS_HOST.nip.io

argocd account update-password \
    --current-password $PASS \
    --new-password admin123

echo http://argo-cd.$INGRESS_HOST.nip.io

# Open it in a browser

# Use `admin` as the username and `admin123` as the password

gh repo fork vfarcic/devspace-vcluster-argocd-prod \
    --clone

cd devspace-vcluster-argocd-prod

export APP_REPO_URL=https://github.com/$GITHUB_ORG/devspace-vcluster-argocd-demo

export PROD_REPO_URL=https://github.com/$GITHUB_ORG/devspace-vcluster-argocd-prod

cat production/devops-toolkit.yaml \
    | sed -e "s@repoURL: .*@repoURL: $APP_REPO_URL@g" \
    | sed -e "s@- .*/devops-toolkit@- $DOCKERHUB_USERNAME/devops-toolkit@g" \
    | tee production/devops-toolkit.yaml

cat apps.yaml \
    | sed -e "s@repoURL: .*@repoURL: $PROD_REPO_URL@g" \
    | tee apps.yaml

git add .

git commit -m "Personalization"

git push

kubectl apply --filename project.yaml

kubectl apply --filename apps.yaml

cd ..

#####################
# Local development #
#####################

cd devspace-vcluster-argocd-demo

# Please watch https://youtu.be/mCesuGk-Fks if you are not familiar with k3d
# Feel free to use any other Kubernetes platform
k3d cluster create --config k3d.yaml

kubectl create namespace dev

# Please watch https://youtu.be/nQly_CEjJc4 if you are not familiar with DevSpace
devspace use namespace dev

devspace dev

# Change config.toml using your favorite editor

# ctrl+c

exit

k3d cluster delete devops-toolkit

########################
# Preview environments #
########################

# Watch https://youtu.be/eZcAvTb0rbA if you are not familiar with GitHub Actions
ls -1 .github/workflows/

cat .github/workflows/pr-open.yaml

# If using a Kubernetes platform that references additional tools in Kube config (e.g., GKE needs `gcloud` and EKS requires the authenticator), you might need to use a more specific step instead of `azure/k8s-set-context@v1`

git checkout -b my-feature

git add .

git commit -m "My feature"

git push --set-upstream origin my-feature

gh pr create --title "What is this?" \
    --body "I'm too lazy to write a description"

# Open the PR link from the output

# Watch https://youtu.be/JqBjpvp268Y if you are not familiar with vCluster
vcluster list

# It should be a great addition to add a comment to the PR with the URL of the app

cat .github/workflows/pr-close.yaml

# Merge the PR

vcluster list

##########################
# Production environment #
##########################

cat .github/workflows/main.yaml

###########
# Destroy #
###########

# Destroy the remote cluster