k8s-vagrant-centos

About...

This setup is used to create kubernetes cluster on local laptop / desktop using vagrant - with this we can create a two node cluster setup which contains one master and one worker node with one single command.

Table of Contents

• What are the prerequisites ?
• How to deploy kubernetes cluster ?
• What are the addons provided ?
• What are the VM's configured ?
• How to access Kubernetes Dashboard ?
• How to access Vagrant VM's ?
• How to stop Vagrant VM's ?
• How to restart Vagrant VM's ?
• How to destroy Vagrant VM's ?

What are the prerequisites ?

• Git
• Vagrant
• Oracle Virtual Manger
• Virtualization needes to be enabled in System BIOS
• Minimum laptop/desktop configuration - 32GB RAM / 8CPU (not to worry base OS will balance the cpu need on time sharing model), 80GB hdd disk space

How to deploy kubernetes cluster ?

• Open bash terminal
• Checkout the code (git clone https://github.com/SubhakarKotta/k8s-vagrant-centos.git)
• $ cd k8s-vagrant-centos/provisioning

Default settings:Vagrantfile

VM:
  password: kubeadmin
  master:
    ip: 100.10.10.100
    cpus: 2
    memory: 2048
    vmname: kmaster
    hostname: kmaster.example.com
  worker1:
    ip: 100.10.10.101
    cpus: 3
    memory: 16384
    vmname: kworker1
    hostname: kworker1.example.com

By running the below command kubernetes cluster will be created with 2 Centos VM's installed.

• vagrant up

What are the addons provided ?

helm / kubernetes-dashboard / nfs-volume-provisioner

What are the VM's configured ?

By default below are the IP Addresses that will be configured for the VM's

Name	IP	OS	RAM	CPU
kmaster	100.10.10.100	CentOS7	2 GB	2
kworker1	100.10.10.101	CentOS7	16GB	3

How to access Kubernetes Dashboard ?

The Kubernetes Dashboard can be accessed via the below URL without any changes from your host machine

http://100.10.10.100:30070/#!/overview?namespace=_all

How to access Vagrant VM's ?

The Vagrant VM can be accessed in two ways

1. Login through vagrant ssh

• $ cd k8s-vagrant-centos/provisioning
• $ vagrant ssh kmaster
• $ vagrant ssh kworker1

2. Login through putty

• 100.10.10.100 / 100.10.10.101 [Username/Password:vagrant/vagrant (OR) root/kubeadmin]

How to stop Vagrant VM's ?

• $ cd k8s-vagrant-centos/provisioning
• $ vagrant halt

How to restart Vagrant VM's ?

• $ cd k8s-vagrant-centos/provisioning
• $ vagrant up

How to destroy Vagrant VM's ?

• $ cd k8s-vagrant-centos/provisioning
• $ vagrant destroy