How to Install Kubernetes Cluster on Ubuntu 22.04

Sashi Kapoor — Tue, 25 Jun 2024 05:03:51 +0000

==========How to Install Kubernetes Cluster on Ubuntu 22.04============ 172.25.0.5/16
172.25.0.6/16

1) Set hostname on Each Node
sudo hostnamectl set-hostname master
sudo exec bash

2) Disable swap & Add kernel Parameters
sudo swapoff -a
sudo sed -i '/ swap / s/^(.*)$/#\1/g' /etc/fstab

sudo tee /etc/modules-load.d/containerd.conf <<EOF
overlay
br_netfilter
EOF

sudo modprobe overlay
sudo modprobe br_netfilter

sudo tee /etc/sysctl.d/kubernetes.conf <<EOT
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOT

sudo sysctl --system

====3) Install Containerd Runtime====

sudo apt update
sudo apt install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt update

sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&1

sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

====4) Add Apt Repository for Kubernetes=====

sudo mkdir -p -m 755 /etc/apt/keyrings
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg

echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list

sudo apt update
sudo apt install -y kubelet kubeadm kubectl

======6) Install Kubernetes Cluster on Ubuntu 22.04======
sudo kubeadm init --ignore-preflight-errors=all for (aws ec2)

kubeadm init --apiserver-advertise-address=172.26.2.0 --ignore-preflight-errors=all

kubeadm init --apiserver-advertise-address=IP --ignore-preflight-errors=all (for local vm)

$ mkdir -p $HOME/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config

$ kubectl cluster-info
$ kubectl get nodes

=============8) Install Calico Network Plugin ====

curl https://raw.githubusercontent.com/projectcalico/calico/v3.27.0/manifests/calico.yaml -O

kubectl apply -f calico.yaml

kubectl get pod -A

kubeadm token create --print-join-command

====end master machine processs======= now worker node step

============================now worker node step============================

1) Set hostname on Each Node
sudo hostnamectl set-hostname master
sudo exec bash

2) Disable swap & Add kernel Parameters
sudo swapoff -a
sudo sed -i '/ swap / s/^(.*)$/#\1/g' /etc/fstab

sudo tee /etc/modules-load.d/containerd.conf <<EOF
overlay
br_netfilter
EOF

sudo modprobe overlay
sudo modprobe br_netfilter

sudo tee /etc/sysctl.d/kubernetes.conf <<EOT
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOT

sudo sysctl --system

====3) Install Containerd Runtime====

sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&1

sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

====4) Add Apt Repository for Kubernetes=====
sudo mkdir -p -m 755 /etc/apt/keyrings

curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg

echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list

sudo apt update
sudo apt install -y kubelet kubeadm kubectl

=================now join master to node with master token===============

Install Elasticsearch

Sashi Kapoor — Tue, 25 Jun 2024 05:02:34 +0000

=======Install Elasticsearch:======
sudo apt update
sudo apt install openjdk-11-jdk

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

sudo apt-get install apt-transport-https

echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list

sudo apt update
sudo apt install elasticsearch

sudo systemctl enable elasticsearch
sudo systemctl start elasticsearch

**
======Install Kibana::=======**
sudo apt update
sudo apt install kibana
sudo systemctl enable kibana
sudo systemctl start kibana

======Install Logstash:========
sudo systemctl enable logstash
sudo systemctl start logstash

http://localhost:5601

how to install jenkins on ubuntu

Sashi Kapoor — Tue, 25 Jun 2024 04:50:20 +0000

Step-1 Install Java

Update your system

Install java

sudo apt install openjdk-21-jre

java -version

It should look something like this after running the command

openjdk version "21.0.1" 2023-10-17

Step-2 Install Jenkins

The commands you provided are used to add the Jenkins repository and its GPG key to your system, specifically for Debian-based Linux distributions.

Add Jenkins GPG Key:

wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -

Add Jenkins Repository to APT Sources:**

echo "deb http://pkg.jenkins.io/debian-stable binary/" | sudo tee -a /etc/apt/sources.list.d/jenkins.li

sudo apt-get update
sudo apt-get install jenkins

sudo systemctl enable jenkins
sudo systemctl start jenkins

sudo systemctl status jenkins

Open your web browser and enter the following URL in the address bar:

http://localhost:8080

Setup Jenkins

Set an Admin Password to use Jenkins: Copy the command below and paste it on a terminal and you will get your Admin Password.

/var/lib/jenkins/secrets/intialAdminPassword

** Install suggested plugins**

** Create a Username and Password**

Keep it running on the default URL

DEV Community: Sashi Kapoor

How to Install Kubernetes Cluster on Ubuntu 22.04

Install Elasticsearch

how to install jenkins on ubuntu