Use this repo to deploy Kubernetes cluster in Google Cloud using Ansible.

Based on Kubernetes-The-Hard-Way by Kelsey Hightower https://github.com/kelseyhightower/kubernetes-the-hard-way/ just for automating process of deployment on GCP with ansible

Preparation

Setup Google Cloud SDK on your PC

ansible-playbook installsdk.yml

After installation, use following command to initialize gcloud and choose your project and region/zone

gcloud init

Copy environment variables file and fill in all required variables in file .env. More information about dynamic inventory setup: https://docs.ansible.com/ansible/latest/scenario_guides/guide_gce.html

cp .env.example .env

Also copy gce.ini.example file and fill in all required variables in section [gce] in file gce.ini

cp inventory/gce.ini.example inventory/gce.ini

Add settings for your group vars - fill in all.yml based on your project, zone and region for installation kubernetes cluster

cp inventory/group_vars/all.yml.example inventory/group_vars/all.yml

Generate ssh keys:

ssh-keygen -f ./ssh/k8s_key -P "" -C k8s

Add content of ./ssh/k8s_key.pub to your Google Cloud console GUI to Compute Engine->Metadata->SSH keys

Export environment variables:

export $(cat .env)

Provision resources

Build all basic instances/networks/firewall rules etc.

ansible-playbook prepare.yml

Once playbook is executed, you can verify that instances are up and running

gcloud compute instances list

output

NAME          ZONE        MACHINE_TYPE   PREEMPTIBLE  INTERNAL_IP  EXTERNAL_IP     STATUS
controller-0  us-west1-c  n1-standard-1               10.240.0.2  XX.XXX.XXX.XXX  RUNNING
controller-1  us-west1-c  n1-standard-1               10.240.0.3  XX.XXX.X.XX     RUNNING
controller-2  us-west1-c  n1-standard-1               10.240.0.4  XX.XXX.XXX.XX   RUNNING
worker-0      us-west1-c  n1-standard-1               10.240.0.5  XXX.XXX.XXX.XX  RUNNING
worker-1      us-west1-c  n1-standard-1               10.240.0.6  XX.XXX.XX.XXX   RUNNING
worker-2      us-west1-c  n1-standard-1               10.240.0.7  XXX.XXX.XX.XX   RUNNING

Bring up Kubernetes Cluster

Execute following command, make coffee and enjoy

ansible-playbook site.yml

Verify test busybox pod is running:

kubectl get pods -l run=busybox

output

NAME                      READY   STATUS    RESTARTS   AGE
busybox-bd8fb7cbd-vflm9   1/1     Running   0          10s

Perfect! Kubernetes Cluster with DNS add-on is up and running

Clean Up Resources

To delete resources on GCP execute

ansible-playbook 14-cleanup.yml