rezabojnordi/kubernetes_ansible

This project helps you to deploy Kubernetes on Linux without a load balancer on cloud platforms.

Requirements for deploying a Kubernetes cluster

OS: Ubuntu (20.04)
CPU: 2 core (per server)
Ram: 2 GB (per server)
Storage 25G (per server)

How to use it

How to Use It

Follow the steps below to use this deployment project: Install Ansible on your client or deployment machine:

sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository --yes --update ppa:ansible/ansible
sudo apt install ansible

Note: Copy the SSH key to your servers (master, worker, and storage):

   # Generate SSH key
   ssh-keygen
   # Copy SSH key to servers
   ssh-copy-id mater1 or your serverip
   ssh-copy-id mater2 or your serverip
   ssh-copy-id mater3 or your serverip
   ssh-copy-id woker1 or your serverip
   ssh-copy-id woker2 or your serverip
   ssh-copy-id storage or your serverip
   ssh-copy-id ha1 or your serverip
   ssh-copy-id ha2 or your serverip
   ssh-copy-id ha3 or your serverip

Note: Replace your_server_ip with the actual IP address of each server.
Change the hostname on your servers:

  ssh master1 hostnamectl set-hostname master1
  ssh master2 hostnamectl set-hostname master2
  ssh master3 hostnamectl set-hostname master3
  ssh worker1 hostnamectl set-hostname worker1
  ssh worker2 hostnamectl set-hostname worker2
  ssh storage hostnamectl set-hostname storage
  ssh ha1 hostnamectl set-hostname ha1
  ssh ha2 hostnamectl set-hostname ha2
  ssh ha3 hostnamectl set-hostname ha3

Note: Before deploying Kubernetes with Ansible, update the variables in the default/main.yml file according to your infrastructure:

vim deault/main.yml

keepalive_ip : "172.16.16.200"
interface_name: "eth0"
pod_network_cidr: "192.168.0.0/16"
master1: "172.16.16.88"
master2: "172.16.16.104"
master3: "172.16.16.184"
storage_export: "172.16.104.0/24"

Note: Modify the inventory file to match your infrastructure:

vim inventroy
[preinstall]
172.16.16.88  ansible_user=root
172.16.16.104   ansible_user=root
172.16.16.184  ansible_user=root
172.16.16.111  ansible_user=root
172.16.16.80  ansible_user=root

[master]
172.16.16.88  ansible_user=root
172.16.16.104   ansible_user=root
172.16.16.184  ansible_user=root

[worker]
172.16.16.111  ansible_user=root
172.16.16.80  ansible_user=root

[storage]
172.16.16.86  ansible_user=root


[init_cluster]
172.16.16.88  ansible_user=root

Deploy the preinstall configuration on master and worker nodes:

ansible-playbook -i inventory -e 'machine=preinstall' --tag preinstall run.yaml

Deploy the load balancer and virtual IP (keepalive) on the master nodes:

ansible-playbook -i inventory --tag loadbalancer -e 'machine=loadbalancer' run.yaml

Initialize the Kubernetes cluster:

ansible-playbook -i inventory --tag master1 -e 'machine=cluster_init' run.yaml

Deploy the Weave Network:

ansible-playbook -i inventory --tag network -e 'machine=cluster_init' run.yaml

Note: After that run blow Comand to check your system's Pod

Check the Pods in your system:

kubectl get pods -o wide -n kube-system

If you encounter any errors, you can use the --limit parameter to rerun Ansible on specific hosts:

ansible-playbook -i inventory -e 'machine=preinstall' run.yaml --limit master or worker

Deploy the Network Storage Functionality (NSF) on the storage server:

ansible-playbook -i inventory --tag storage -e 'machine=storage' run.yaml

Join new workers to the Kubernetes cluster:

ansible-playbook -i inventory --tag worker_init -e 'machine=worker_init' run.yaml

Join new masters to the Kubernetes cluster:

ansible-playbook -i inventory --tag master_init -e 'machine=master_init' run.yaml

These steps will guide you through deploying a Kubernetes cluster without a load balancer using the provided Ansible playbook. Make sure to follow each step carefully and adapt the configurations according to your specific infrastructure.

Note: The instructions assume that you have basic knowledge of Linux, networking, and Kubernetes concepts.

rezabojnordi / kubernetes_ansible