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Deploy a Kubernetes Cluster with any number of nodes on Vultr, using Terraform and Ansible.

Usage

  1. Download the repository with: git clone https://github.com/sceptic30/ansible-terraform-kubernetes-vultr.git
  2. Install the whois pagkage in your local machine with sudo apt install whois and generate a hashed password for your desired username like so: mkpasswd --method=sha-512 some_password and copy the hash to ansible vars file located in ansible/vars.yaml. Add the other details as well.
  3. cd to ansible-terraform-kubernetes-vultr folder, and change permissions of the keys folder to 700 with chmod 700 -R keys. If the keys are assessible by other users ansible will not be able to connect to the remote machine and will exit with an exit 4 status code.
  4. cd to they keys folder, and create your private-public key pair by executing the command: $ ssh-keygen -t ed25519 -C "[email protected]" The id_ed25519.pub key will be uploaded to your Vultr account, and will be used while servers are provisioned.
  5. Run ./install.sh

LoadBalancer

The MetalLB loadbalancer will be autoconfigured by using the IP of the Master Node. When the installation finish, will see something like:

$ kubectl get service -n nginx-ingress
NAME            TYPE           CLUSTER-IP    EXTERNAL-IP   PORT(S)                      AGE
nginx-ingress   LoadBalancer   10.100.67.5   45.76.39.72   80:32735/TCP,443:32094/TCP   5m17s

DNS Entries

DNS entries for Jenkins, Grafana, Prometheus, and Alert Manager are auto-configured as well.

Pod Network

Flunnel is included out of the box, but you have the option to use Calico by editing the appropriate task in ansible/k8s-master-playbook.yaml.