Tools build with Ansible to provisioning multiple cluster Kubernetes cluster and single management node to control the cluster. The cluster is based on CKA Curriculum and Exam tips and create this following cluster:
| Cluster | Members | CNI | Description |
|---|---|---|---|
| k8s | 1 master, 2 worker | Flannel | k8s cluster |
| hk8s | 1 master, 2 worker | Calico | k8s cluster |
| bk8s | 1 master, 1 worker | Flannel | k8s cluster |
| wk8s | 1 master, 2 worker | Flannel | k8s cluster |
| ek8s | 1 master, 2 worker | Flannel | k8s cluster |
| ik8s | 1 master, 1 base node | Loopback | k8s cluster - missing worker node |
- KVM Server
- Routed Network in KVM
- Template Operating System
- Ubuntu 16.04 server or Ubuntu 18.04 Server with interfaces configuration in /etc/network/interfaces
- KVM Server is able to SSH without password into Template Operating System (root) VM and SSH to KVM Server himself
- Ansible playbook will create VM based on Template VM
- Install Ansible in KVM Server
- Configure Ansible to disable
host key checking - Clone Repository
git clone https://github.com/zufardhiyaulhaq/CKA-Provisioning.git
- Change variables
group_vars/all.yml
- Update Instalation
python install.py
- Run Ansible in KVM server
ansible-playbook main.yml -i hosts/hosts
root@zu-management:~# kubectl config get-contexts
CURRENT NAME CLUSTER AUTHINFO NAMESPACE
bk8s kubernetes-bk8s kubernetes-admin-bk8s
ek8s kubernetes-ek8s kubernetes-admin-ek8s
hk8s kubernetes-hk8s kubernetes-admin-hk8s
ik8s kubernetes-ik8s kubernetes-admin-ik8s
k8s kubernetes-k8s kubernetes-admin-k8s
wk8s kubernetes-wk8s kubernetes-admin-wk8s
root@zu-management:~# kubectl config use-context k8s
Switched to context "k8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-k8s-master Ready master 37m v1.14.1
zu-k8s-worker0 Ready <none> 19m v1.14.1
zu-k8s-worker1 Ready <none> 19m v1.14.1
root@zu-management:~# kubectl config use-context ek8s
Switched to context "ek8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-ek8s-master Ready master 34m v1.14.1
zu-ek8s-worker0 Ready <none> 19m v1.14.1
zu-ek8s-worker1 Ready <none> 18m v1.14.1
root@zu-management:~# kubectl config use-context hk8s
Switched to context "hk8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-hk8s-master Ready master 37m v1.14.1
zu-hk8s-worker0 Ready <none> 19m v1.14.1
zu-hk8s-worker1 Ready <none> 19m v1.14.1
root@zu-management:~# kubectl config use-context ik8s
Switched to context "ik8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-ik8s-master NotReady master 34m v1.14.1
root@zu-management:~# kubectl config use-context bk8s
Switched to context "bk8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-bk8s-master Ready master 36m v1.14.1
zu-bk8s-worker0 Ready <none> 19m v1.14.1
root@zu-management:~# kubectl config use-context wk8s
Switched to context "wk8s".
root@zu-management:~# kubectl get nodes
NAME STATUS ROLES AGE VERSION
zu-wk8s-master Ready master 36m v1.14.1
zu-wk8s-worker0 Ready <none> 19m v1.14.1
zu-wk8s-worker1 Ready <none> 19m v1.14.1
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