kubernetes-deployment-order-hands-on.sh

# Source: https://gist.github.com/vfarcic/82e08206a786bc4373f7325af1d3fea9

################################################################################
# Argo CD Synchronization is BROKEN! It Should Switch to Eventual Consistency! #
################################################################################

# Additional Info:
# - Kubernetes Deployment Order: https://argoproj.github.io/cd/
# - Kubernetes? Database Schema? Schema Management with Atlas Operator: https://youtu.be/1iZoEFzlvhM
# - Manage Kubernetes Secrets With External Secrets Operator (ESO): https://youtu.be/SyRZe5YVCVk
# - Argo CD - Applying GitOps Principles To Manage A Production Environment In Kubernetes: https://youtu.be/vpWQeoaiRM4
# - How To Apply GitOps To Everything - Combining Argo CD And Crossplane: https://youtu.be/yrj4lmScKHQ
# - Mastering Argo CD Sync Waves: A Deep Dive into Effective GitOps Synchronization Strategies: https://youtu.be/LKuRtOTvlXk
# - Crossplane - GitOps-based Infrastructure as Code through Kubernetes API: https://youtu.be/n8KjVmuHm7A
# - How To Shift Left Infrastructure Management Using Crossplane Compositions: https://youtu.be/AtbS1u2j7po
# - Crossplane Composition Functions: Unleashing the Full Potential: https://youtu.be/jjtpEhvwgMw

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

git clone https://github.com/vfarcic/kubernetes-deployment-demo

cd kubernetes-deployment-demo

# Replace `[...]` with hyperscaler you'd like to use in the command that follows. Choices are: `aws` and `google`. Please open an issue if you'd like to add support for Azure or any other hyperscaler.

export HYPERSCALER=[...]

nix-shell --run $SHELL shell-$HYPERSCALER.nix

chmod +x setup.sh

./setup.sh

source .env

#################################
# Deployment Order with kubectl #
#################################

helm upgrade --install atlas-operator \
    oci://ghcr.io/ariga/charts/atlas-operator \
    --namespace atlas-operator --create-namespace

cat external-secrets/$HYPERSCALER.yaml

helm upgrade --install \
    external-secrets external-secrets/external-secrets \
    --namespace external-secrets --create-namespace \
    && kubectl apply \
    --filename external-secrets/$HYPERSCALER.yaml

kubectl --namespace external-secrets \
    wait --for=condition=available \
    deployment external-secrets-webhook --timeout=600s

kubectl apply --filename external-secrets/$HYPERSCALER.yaml

#################################
# Deployment Order with Argo CD #
#################################

ls -1 infra/

cat argocd-app.yaml

kubectl --namespace argocd apply --filename argocd-app.yaml

kubectl --namespace argocd port-forward svc/argocd-server 8080:80

# Open http://localhost:8080 in a browser in a separate terminal session. Use `admin` as username and `admin123` as password.

# Enter the `infra` application and click the `Syncing` button.

# Press the `Terminate` button.

ls -1 infra-waves

cat infra-waves/crossplane.yaml

cat infra-waves/aws-config.yaml

kubectl --namespace argocd apply --filename argocd-app-waves.yaml

kubectl wait --for=condition=healthy provider.pkg.crossplane.io \
    --all --timeout=600s

kubectl apply --filename infra-waves

####################################
# Deployment Order with Crossplane #
####################################

cat cluster/$HYPERSCALER.yaml

kubectl --namespace a-team apply \
    --filename cluster/$HYPERSCALER.yaml

cat db/$HYPERSCALER.yaml

kubectl --namespace a-team apply --filename db/$HYPERSCALER.yaml

crossplane beta trace sqlclaim my-db --namespace a-team

crossplane beta trace clusterclaim cluster --namespace a-team

crossplane beta trace clusterclaim cluster --namespace a-team

# Wait until the status of all resources is `Available`.

crossplane beta trace sqlclaim my-db --namespace a-team

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

./destroy.sh