#What is kubernetes simple explanation mac
You should have kubectl installed on your workstation.įor example, I did the following in my mac keeping vagrant-kubeadm-kubernetes folder as the current directory. These are generated during the run time.Ĭopy the config file to your $HOME/.kube folder if you want to interact with the cluster from your workstation terminal.
Once Vagrant execution is successful, you will see a configs folder with a few files (config, join.sh, and token) inside the cloned repo. Access Kubernetes Cluster From Workstation Terminal Note: If you want applications to persist data on each cluster or pod restart, make sure you use the persistent volume type “local” attached to a nodeSelector. Whenever you need the cluster, just execute, vagrant up To shut down the Kubernetes VMs, execute the halt command. That’s it! You can start deploying and testing other applications. You should see the output as shown below. Step 4: List all the cluster nodes to ensure the worker nodes are connected to the master and in a ready state. Step 3: Log in to the master node to verify the cluster configurations.
#What is kubernetes simple explanation download
Note: If you are running it for the first time, Vagrant will first download the ubuntu box mentioned in the Vagrantfile. Kubernetes installation and configuration happens through the shell script present in the scripts folder. Step 1: To create the cluster, first cd into the cloned directory. Note: You need a minimum of 16 Gig RAM workstation to run this setup without any issues.įollow the steps given below to spin up the Kubernetes cluster and validate all the cluster configurations. * 0.0.0.0/0 ::/0 Setup Kubernetes Cluster on Vagrant To resolve the issue, one /etc/vbox/nf and add the following. Meaning, vagrant won’t be able to create a network other than 198 series. If you have upgraded MAC to OS Monterey, you might face issues with vagrant for creating private networks. The Kubeadm Vagrantfile and scripts are hosted on the Vagrant Kubernetes Github repository.Ĭlone the repository to follow along with the guide. Kubernetes-Kubeadm Vagrant Github Repository Important Note: If you are preparing for CKA/CKAD/CKS certification, make use of the CKA/CKAD/CKS Voucher Codes before the price increases. The setup script deploys v1.22.6 version of kubernetes that is required for Kubernetes certification exams.įor Kubeadm cluster bootstrapping, refer to my guide to setup Kubernetes cluster using Kubeadm You can use these Vagrant scripts to set up your local practice environment.Īnd specifically, for CKA and CKS, you can expect Kubeadm related exam questions like bootstrapping and upgrading the kubernetes cluster using kubeadm. If you are preparing for any of the Kubernetes certifications, you need a cluster to practice all the exam scenarios. CKA/CKAD/CKS Certification Practice Environment Here is a high-level overview of the setup. You can delete all the VMs in one command and recreate the setup with a vagrant up command any time you need.The nodes get connected automatically to the master during the startup. All the cluster configurations remain intact without any issues. You can shut down the VMs when not in use and start them again whenever needed.You can use the kubeconfig file to connect the cluster from your workstation. The kubeconfig file and the kubernetes dashboard access token get added to the configs folder where you have the Vagrantfile.The kubeconfig file gets added to all the nodes in the cluster so that you can execute kubectl commands from any node.Calico Network Plugin, Metrics server, and Kubernetes dashboard gets installed as part of the setup.Single vagrant up command will create three VMs and configures all essential kubernetes components and configuration using Kubeadm.I have written a basic Vagrantfile and scripts so that anyone can understand and make changes as per their requirements. Automated Kubernetes Cluster Setup on Vagrant I have created this as part of my Certified Kubernetes Security Specialist exam guide with cluster version 1.20. This guide primarily focuses on the Kubernetes automated setup using Vagrantfile and shell scripts. If you are new to Vagrant, see my beginners vagrant guide I pretty much use vagrant for most of my testing and learning purposes. Vagrant is a great utility to set up Virtual machines on your local workstation. It is a multinode kubernetes setup using kubeadm. In this Kubernetes tutorial, I have covered the step-by-step guide to setup Kubernetes cluster on Vagrant.
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