https://github.com/techiescamp/vagrant-kubeadm-kubernetes
Vagrantfile & Scripts to setup Kubernetes Cluster using Kubeadm for CKA, CKAD and CKS practice environment
https://github.com/techiescamp/vagrant-kubeadm-kubernetes
cka ckad cks kubeadm kubeadm-cluster kubeadmin-kubernetes kubernetes kubernetes-cluster kubernetes-setup
Last synced: about 1 month ago
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Vagrantfile & Scripts to setup Kubernetes Cluster using Kubeadm for CKA, CKAD and CKS practice environment
- Host: GitHub
- URL: https://github.com/techiescamp/vagrant-kubeadm-kubernetes
- Owner: techiescamp
- License: gpl-3.0
- Created: 2021-05-16T06:07:23.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2025-03-30T10:49:12.000Z (3 months ago)
- Last Synced: 2025-04-11T20:43:58.925Z (2 months ago)
- Topics: cka, ckad, cks, kubeadm, kubeadm-cluster, kubeadmin-kubernetes, kubernetes, kubernetes-cluster, kubernetes-setup
- Language: Shell
- Homepage: https://devopscube.com/kubernetes-cluster-vagrant/
- Size: 208 KB
- Stars: 792
- Watchers: 28
- Forks: 753
- Open Issues: 9
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG
- License: LICENSE.md
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README
# Vagrantfile and Scripts to Automate Kubernetes Setup using Kubeadm [Practice Environment for CKA/CKAD and CKS Exams]
A fully automated setup for CKA, CKAD, and CKS practice labs is tested on the following systems:
- Windows
- Ubuntu Desktop
- Mac Intel-based systems
If you are MAC Silicon user, Please use the following repo.
- [Vagrant Kubeadm Setup on MAC Silicon](https://github.com/techiescamp/vagrant-kubeadm-mac-silicon)
## Kubernetes Certification Voucher (UpTo 38% OFF) 🎉
As part of our commitment to helping the DevOps community save money on Kubernetes Certifications, we continuously update the latest voucher codes from the Linux Foundation
> [!IMPORTANT]
> 🚀 Kubernetes Certification aspirants can **save 30%** today using code **DCUBE30** at https://kube.promo/devops. It is a limited-time offer from the Linux Foundation.
The following are the best bundles to **save 38% (up to $788)** with code **DCUBE30**
- KCNA + KCSA + CKA + CKAD + CKS ($788 Savings): [kube.promo/kubestronaut](https://kube.promo/kubestronaut)
- CKA + CKAD + CKS Exam bundle ($528 Savings): [kube.promo/k8s-bundle](https://kube.promo/k8s-bundle)
- CKA + CKS Bundle ($355 Savings) [kube.promo/bundle](https://kube.promo/bundle)
- KCNA + CKA ( $288 Savings) [kube.promo/kcka-bundle](https://kube.promo/kcna-cka)
- KCSA + CKS Exam Bundle ($229 Savings) [kube.promo/kcsa-cks](https://kube.promo/kcsa-cks)
- KCNA + KCSA Exam Bundle ($203 Savings) [kube.promo/kcna-kcsa](https://kube.promo/kcna-kcsa)
> [!NOTE]
>⌛ Act fast—this limited-time offer won’t be around much longer!
> You have one year of validity to appear for the certification exam after registration
## Setup Prerequisites
- A working Vagrant setup using Vagrant + VirtualBox
Here is the high level workflow.
## Documentation
Current k8s version for CKA, CKAD, and CKS exam: 1.30
The setup is updated with 1.31 cluster version.
Refer to this link for documentation full: https://devopscube.com/kubernetes-cluster-vagrant/
## Prerequisites
1. Working Vagrant setup
2. 8 Gig + RAM workstation as the Vms use 3 vCPUS and 4+ GB RAM
## For MAC/Linux Users
The latest version of Virtualbox for Mac/Linux can cause issues.
Create/edit the /etc/vbox/networks.conf file and add the following to avoid any network-related issues.
* 0.0.0.0/0 ::/0
or run below commands
```shell
sudo mkdir -p /etc/vbox/
echo "* 0.0.0.0/0 ::/0" | sudo tee -a /etc/vbox/networks.conf
```
So that the host only networks can be in any range, not just 192.168.56.0/21 as described here:
https://discuss.hashicorp.com/t/vagrant-2-2-18-osx-11-6-cannot-create-private-network/30984/23
## Bring Up the Cluster
To provision the cluster, execute the following commands.
```shell
git clone https://github.com/scriptcamp/vagrant-kubeadm-kubernetes.git
cd vagrant-kubeadm-kubernetes
vagrant up
```
## Set Kubeconfig file variable
```shell
cd vagrant-kubeadm-kubernetes
cd configs
export KUBECONFIG=$(pwd)/config
```
or you can copy the config file to .kube directory.
```shell
cp config ~/.kube/
```
## Install Kubernetes Dashboard
The dashboard is automatically installed by default, but it can be skipped by commenting out the dashboard version in _settings.yaml_ before running `vagrant up`.
If you skip the dashboard installation, you can deploy it later by enabling it in _settings.yaml_ and running the following:
```shell
vagrant ssh -c "/vagrant/scripts/dashboard.sh" controlplane
```
## Kubernetes Dashboard Access
To get the login token, copy it from _config/token_ or run the following command:
```shell
kubectl -n kubernetes-dashboard get secret/admin-user -o go-template="{{.data.token | base64decode}}"
```
Make the dashboard accessible:
```shell
kubectl proxy
```
Open the site in your browser:
```shell
http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/#/login
```
## To shutdown the cluster,
```shell
vagrant halt
```
## To restart the cluster,
```shell
vagrant up
```
## To destroy the cluster,
```shell
vagrant destroy -f
```
# Network graph
```
+-------------------+
| External |
| Network/Internet |
+-------------------+
|
|
+-------------+--------------+
| Host Machine |
| (Internet Connection) |
+-------------+--------------+
|
| NAT
+-------------+--------------+
| K8s-NATNetwork |
| 192.168.99.0/24 |
+-------------+--------------+
|
|
+-------------+--------------+
| k8s-Switch (Internal) |
| 192.168.99.1/24 |
+-------------+--------------+
| | |
| | |
+-------+--+ +---+----+ +-+-------+
| Master | | Worker | | Worker |
| Node | | Node 1 | | Node 2 |
|192.168.99| |192.168.| |192.168. |
| .99 | | 99.81 | | 99.82 |
+----------+ +--------+ +---------+
```
This network graph shows:
1. The host machine connected to the external network/internet.
2. The NAT network (K8s-NATNetwork) providing a bridge between the internal network and the external network.
3. The internal Hyper-V switch (k8s-Switch) connecting all the Kubernetes nodes.
4. The master node and two worker nodes, each with their specific IP addresses, all connected to the internal switch.