Note: This repository is still in progress.
TODO:
- permanent swapoff / disable SELinux / firewalld
- no idempotency for some tasks (always changed)
- remove temporary token after join nodes
- 1 master (VM)
- 2 workers (VM)
- Container: Docker
- CNI: Flannel
- all VMs running on the same host node
- all VMs/host have the Internet access via proxy
- use kubeadm to bootstrap
- OS
- CentOS 7.5.1804
- Kubernetes
- kubeadm/kubectl/kubelet: v1.11.2
- Docker
- docker-ce-18.06.1.ce-3.el7.x86_64
- (newer version than CentOS bundled version)
- Flannel
- kube-flannel.yml add-on: v0.10.0
- Ansible
- ansible-2.5.5
- All VMs must have completed the OS installatin and the network configuration
- all VM hostnames should be configured in /etc/hosts on each VMs
- SSH root login with no password from the ansible host
- copy and customize the inventory file based on hosts.sample
- copy and customize group_vars/all file based on group_vars/all.yml.sample
-
- Installing kubeadm
- https://kubernetes.io/docs/setup/independent/install-kubeadm/
- playbooks:
- 10-os-config.yml
- 11-docker-ce-install.yml
- 12-kubernetes-install.yml
-
- Creating a single master cluster with kubeadm
- https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/
- playbooks:
- 13-kube-single-master.yml
- 14-kube-join-workers.yml
- Tear down / uninstall
- https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/
- playbooks:
- 90-kube-teardown.yml
- 91-kubernetes-uninstall.yml
- shutdown all node
-
11-docker-ce-install.yml failed as:
Error: docker-ce conflicts with 2:docker-1.13.1-74.git6e3bb8e.el7.centos.x86_64\n"- Remove the CentOS bundled version of docker first or use ' --tags remove-old-docker,all' option when running the playbook which will do that.
-
kubctl cluster-info dump failed as:
error: missing apiVersion or kind and cannot assign it; no kind is registered for the type core.NodeList- known issue in v1.11: kubernetes/kubernetes#65221