ansible-kubernetes

Ansible Playbook for a Green Field Deployment Kubernetes Cluster

ToDo List

• Role for setting up OS
• Role for installing and configuring Container Runtime (containerd)
• Role for installing kubernetes
• Role for deploying kubernetes cluster (controlplanes)
• Role for deploying kubernetes worker node
• Role for deploying CNI (Calico)
• Role for deploying MetalLb
• Role for deploying Longhorn Storage
• Fetch kube config from control plane
• Add Upgrade playbook for k8s
• Add role for deploying ArgoCD
• Create ArgoCD Notifications Task
• Create Kubernetes Metrics Role
• Create a Task to rebalance the Nodes after new Node joins

Wish list

• Deploy Kubernetes Dashboard
• Deploy External ETCD
• Add TLS configuration for argocd
• Properly configure kubelet for TLS

Running Initial Install

The below runs everything, you can also specify specific tags

ansible-playbook -i hosts.yaml all.yaml

Joining a New Node to existing cluster as a Worker

The following 2 tags are needed to join deploy and join a new node leaving the existing nodes intact.

ansible-playbook -i hosts.yaml all.yaml --tags=packages,workers

Running Cluster Info Checker

This will check current kubelet version as well as current CNI (Calico), MetalLB and Longhorn

ansible-playbook -i hosts.yaml check_info.yaml

Running Upgrade

The below will upgrade kubernetes.

ansible-playbook -i hosts.yaml upgrade_k8s.yaml