02-doks.sh

# Requirements:
# git: https://git-scm.com/
# terraform: https://www.terraform.io/downloads.html
# kubectl: https://kubernetes.io/docs/tasks/tools/install-kubectl/
# helm: https://helm.sh/docs/using_helm/
# doctl: https://github.com/digitalocean/doctl
# DigitalOcean: https://www.digitalocean.com/ account with admin privileges
# GitBash (if Windows)

# Open https://github.com/terraform-providers/terraform-provider-digitalocean/graphs/contributors

git clone https://github.com/vfarcic/k8s-specs.git

cd k8s-specs

git pull

cd terraform/doks

cat cluster.tf

doctl compute region list

terraform init

# Use the instructions in https://www.digitalocean.com/docs/api/create-personal-access-token/ to generate the token
# Store the token inside the `token` file.
# Make sure that it does not contain any extra lines.

doctl auth init \
    --access-token $(cat token)

doctl kubernetes options versions

export VERSION=[...]

terraform apply \
    --var k8s_version=$VERSION

export KUBECONFIG=$PWD/kubeconfig

doctl kubernetes cluster \
    kubeconfig save devops-paradox

kubectl get nodes

git clone \
    https://github.com/vfarcic/devops-toolkit.git

cd devops-toolkit

helm template charts/devops-toolkit \
    --name devops-toolkit \
    --output-dir $PWD \
    --set replicaCount=25 \
    --set image.repository=vfarcic/devops-toolkit-series \
    --set image.tag=latest \
    --set domain=false

kubectl apply \
    --filename devops-toolkit \
    --recursive

cd ..

kubectl get pods

terraform apply \
    --var k8s_version=$VERSION \
    --var node_count=6

kubectl get nodes

kubectl get pods

kubectl version --output yaml

doctl kubernetes options versions

export VERSION=[...]

export KUBECONFIG=$PWD/kubeconfig

watch --interval 10 \
    "kubectl get pods,nodes"

terraform apply \
    --var k8s_version=$VERSION \
    --var node_count=6

doctl kubernetes cluster list

export CLUSTER_ID=[...]

doctl kubernetes cluster \
    upgrade $CLUSTER_ID \
    --version $VERSION

doctl kubernetes cluster get $CLUSTER_ID

terraform destroy \
    --var k8s_version=$VERSION