Ansible Playbook to setup Kubernetes Cluster

Prerequisites for Ansible Controller

• Ansible 2.5.x installed
• Python package “netaddr” is installed
• Git installed

Kubernetes Cluster to setup

• Kubernetes: v1.30.2
  • Single node cluster
  • kubelet,kube-proxy, kube-apiserver, kube-controller-manager, kube-scheduler, and etcd are managed by systemd (i.e. not containerized)
    • kubelet and kube-proxy run as root, and the rest run as non-root
  • Communication between k8s components is encrypted by TLS
  • Authentication by x509 client certificates
  • TLS Bootstrapping
    • Bootstrap token
    • Auto approval for CSRs
  • Certificate Rotation is enabled
  • etcd 3.5.14
  • Calico 3.28.0
  • CoreDNS 1.11.1
  • Service cluster IP range: 10.0.0.0/16
  • Cluster CIDR: 10.32.0.0/16
  • Proxy mode: ipvs
  • Using KubeletConfiguration, KubeProxyConfiguration, and KubeSchedulerConfiguration
• Tools
  • Helm 3.15.2

How to use

$ su -
# git clone https://github.com/kaitoy/ansible-k8s.git
# cd ansible-k8s
# sh play.sh