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#Kubeadm centos 7 vagrant how to#
#Kubeadm centos 7 vagrant full#
#Kubeadm centos 7 vagrant code#
#Kubeadm centos 7 vagrant password#

Refer below for details of configuration options.

Configure the cluster parameters in Vagrantfile.

The result of it is kubeadm-vagrant, a github project with simple steps to setup your kubernetes cluster with more control on vagrant based virtual machines. I have been working on an automation to setup the cluster. With reference to steps listed at Using kubeadm to Create a Cluster for setting up the Kubernetes cluster with kubeadm. In the next post we’lI set up the Kubernetes cluster.Setup Kubernetes Cluster with Kubeadm and Vagrant This concludes the Virtual Lab setup for Kubernetes with virtual box. Once the above changes have been done, reboot the vm using reboot command.

Then comment the swap entry from /etc/fstab run the following: vi /etc/fstab

However, to make sure the same IP and the hostname is not assigned, make sure to change the mac address of the virtual network adapter from settings before booting the VM. To follow through with this article, you will need to have Virtualbox and Vagrant installed. Once one VM has been created, you can simply clone another to create a new VM with the same configuration. This article explains how you can use kubeadm to set up a Kubernetes cluster on three VirtualBox virtual machines (one master and two workers) running Ubuntu 20.04 LTS. Hint : To save and quit VI editor press escape and then :wq ( w -write, q- quit) To fix the warning you can do the following:Īdd these lines… (press i to switch to insert) LANG=en_US.utf-8

#Kubeadm centos 7 vagrant password#

To connect from ssh you will need the host IP and run the following command to get it: hostname -IĮnter the password when prompted and you should get a session like below upon a successful login: (If you are on windows, you can use a ssh client like putty) I’m connecting externally with ssh from to these VM’s. Once you have finished the installation, login to the vm using the credentials provided during installation. I’m posting the screenshots for your convenience. You MUST disable swap in order for the kubelet to work properly.

Certain ports are open on your machines.

Unique hostname, MAC address, and product_uuid for every node.

#Kubeadm centos 7 vagrant full#

Full network connectivity between all machines in the cluster (public or private network is fine).

2 GB or more of RAM per machine (any less will leave little room for your apps).

The Kubernetes project provides generic instructions for Linux distributions based on Debian and Red Hat, and those distributions without a package manager.

#Kubeadm centos 7 vagrant code#

During the VM set up make sure the points in blue are taken into account. Vagrantfile configuremaster.sh configureworker.sh installkubelet.sh kube-flannel.yml samplegohttp.yaml service-nodeport.yaml View code README. Hence, the following are minimum requirements to set up the cluster according to the Kubernetes documentation. I’m going to use the kubeadm tool to set up the cluster. Once downloaded, you may start creating a new virtual machine with virtual box. I’ve downloaded the CentOS 7 installation sources from the following location (Choose one of the mirrors): I will walk you through the Installation steps of CentOS first. I’m going to set up my virtual lab with 3 VM’s for the cluster ( A Master node and two worker nodes) installing CentOS 7. But if you are willing to build and play around with the vm’s from scratch on your own keep reading this.

There are easier ways of doing this like using vagrant scripts to save time.

#Kubeadm centos 7 vagrant how to#

In this blog I’m intending to walk you through how to setup a virtual box lab to play around with Kubernetes.