kubeadm Ansible Playbook for Centos/RHEL 7

This is a simple playbook to wrap the following operations:

• Install the kubeadm repo
• Install docker, kubeadm, kubelet, kubernetes-cni, and kubectl
• Disable SELinux 😞
• Set docker --logging-driver=json-file (when the tag docker is not skipped)
• Set docker --storage-driver=overlay (when the tag docker is not skipped)
• Set kubelet --cgroup-driver=systemd (when the tag kubelet is not skipped)
• Optional: Configure an insecure registry for docker (when the tag docker is not skipped)
• Initialize the cluster on master with kubeadm init
• Install user specified pod network from group_vars/all
• Join the nodes to the cluster with 'kubeadm join`
• Sanity: checks if nodes are ready and if all pods are running

NOTE: It does support http_proxy configuration cases. Simply update the your proxy in the group_vars/all.

This has been tested with RHEL&CentOS 7.3 and Kubernetes v1.6.1

How To

git clone https://github.com/ReSearchITEng/kubeadm-playbook.git
cd kubeadm-playbook/
cp hosts.example hosts
vi hosts <add hosts>
group_vars
cp group_vars/all.example group_vars/all
vi group_vars/all <modify vars as needed>
ansible-playbook -i hosts site.yml [--skip-tags "docker,prepull_images,kubelet"]

PS: work based on sjenning/kubeadm-playbook