Skip to content

Latest commit

 

History

History
106 lines (70 loc) · 2.75 KB

README.md

File metadata and controls

106 lines (70 loc) · 2.75 KB
Raw

Vagrantfile and Scripts to Automate Kubernetes Setup using Kubeadm [Practice Environment for CKA/CKAD and CKS Exams]

Documentation

Current k8s version for CKA, CKAD, and CKS exam: 1.27

Refer to this link for documentation: https://devopscube.com/kubernetes-cluster-vagrant/

🚀 CKA, CKAD, CKS, or KCNA Coupon Codes

🚀 CKA, CKAD, CKS, or KCNA exam aspirants can save $80 today using code DCUBE20 at https://kube.promo/devops. It is a limited-time offer from the Linux Foundation.

For the best savings, opt for the CKA + CKS bundle ($210 Savings). Use code DCUBE20 at https://kube.promo/bundle

Note: You have one year of validity to appear for the certification exam after registration

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

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.

git clone https://github.com/scriptcamp/vagrant-kubeadm-kubernetes.git
cd vagrant-kubeadm-kubernetes
vagrant up

Set Kubeconfig file variable

cd vagrant-kubeadm-kubernetes
cd configs
export KUBECONFIG=$(pwd)/config

or you can copy the config file to .kube directory.

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:

vagrant ssh -c "/vagrant/scripts/dashboard.sh" master

Kubernetes Dashboard Access

To get the login token, copy it from config/token or run the following command:

kubectl -n kubernetes-dashboard get secret/admin-user -o go-template="{{.data.token | base64decode}}"

Proxy the dashboard:

kubectl proxy

Open the site in your browser:

http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/#/overview?namespace=kubernetes-dashboard

To shutdown the cluster,

vagrant halt

To restart the cluster,

vagrant up

To destroy the cluster,

vagrant destroy -f