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https://github.com/odennav/kubeadm-ansible-ubuntu
Automatically deploy a Kubernetes cluster with Kubeadm using Ansible and Vagrant
https://github.com/odennav/kubeadm-ansible-ubuntu
ansible ansible-role automation cluster deployment deployment-automation devops kubeadm kubernetes linux ubuntu vagrant
Last synced: 10 days ago
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Automatically deploy a Kubernetes cluster with Kubeadm using Ansible and Vagrant
- Host: GitHub
- URL: https://github.com/odennav/kubeadm-ansible-ubuntu
- Owner: odennav
- License: apache-2.0
- Created: 2024-03-13T20:44:12.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2024-04-23T14:37:56.000Z (8 months ago)
- Last Synced: 2024-04-23T15:39:54.329Z (8 months ago)
- Topics: ansible, ansible-role, automation, cluster, deployment, deployment-automation, devops, kubeadm, kubernetes, linux, ubuntu, vagrant
- Language: Jinja
- Homepage:
- Size: 20.5 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
## Rapid Deployment of a Kubernetes Cluster with Ansible
Utilize Ansible and Vagrant to rapidly deploy a Kubernetes cluster in a Test environment.
The Kubernetes cluster we will create is shown in the diagram above. It consists of three vagrant nodes `kube nodes`
- k8smaster
- k8snode1
- k8snode2
These servers are located in different subnets compared to your development machine `ansible node`
- devbuild
## Getting Started
Follow these steps to implement the setup:
**Provision VMs**
Login into your ansible node
```bash
vagrant up
vagrant ssh devbuild
```
Change the root password for ansible node and switch to root
```bash
sudo passwd
su -
```
Update the package manager and install Git
```bash
apt update
apt install git -y
```
Download this repository to `devbuild` machine, access ansible and bash scripts
```bash
cd /
git clone https://github.com/odennav/kubeadm-ansible-ubuntu.git
cd kubeadm-ansible-ubuntu
```
Generate SSH public/private key pair
```bash
ssh-keygen -t rsa -b 4096
```
Once the RSA key-pair is generated, manually copy the public key `id_rsa.pub` to the `/root/.ssh/authorized_keys` file in all kube nodes.
**Install Ansible in devbuild**
```bash
sudo apt install -y software-properties-common
sudo add-apt-repository --yes --update ppa:ansible/ansible
sudo apt install -y ansible
```
The bootstrap and k8s folders in this repository contain the Ansible scripts necessary to set up your servers with the required packages and applications.
### Bootstrapping Vagrant Nodes
All nodes will be bootstrapped using Ansible.
Bootstrap the master node
```bash
cd kubeadm-ansible-ubuntu/bootstrap/
ansible-playbook bootstrap.yml --limit k8s_master
```
Bootstrap the worker nodes
```bash
ansible-playbook bootstrap.yml --limit k8s_node
```
Once the bootstrap is complete, you can log in as `odennav-admin`.
Confirm SSH access to master node
```bash
ssh [email protected]
```
Confirm SSH access to 1st worker node
```bash
ssh [email protected]
```
To return to devbuild, type `exit` and press `Enter` or use `Ctrl+D`
Confirm SSH access to 2nd worker node
```bash
ssh [email protected]
```
### Setting up Kubernetes Cluster
Your kube nodes are now ready to have a Kubernetes cluster installed on them.
Execute playbooks in this particular order:
```bash
cd ../kubeadm
ansible-playbook k8s.yml --limit k8s_master
ansible-playbook k8s.yml --limit k8s_node
```
Check status of your nodes
```bash
kubectl get nodes
```
Your Kubernetes cluster is ready.
-----
Enjoy!