--- JDK & Maven Installation ---

sudo apt-get update -y sudo apt install openjdk-11-jre -y sudo apt-get install maven -y

--- Docker Installation ---

sudo apt-get update -y sudo apt-get install docker.io -y service docker restart sudo usermod -aG docker $USER newgrp docker sudo chmod 666 /var/run/docker.sock sudo systemctl restart docker

--- KUBERNETES ---

#On Master and slave

apt-get update -y apt-get install docker.io -y service docker restart
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" >/etc/apt/sources.list.d/kubernetes.list apt-get update apt install kubeadm=1.20.0-00 kubectl=1.20.0-00 kubelet=1.20.0-00 -y

#On Master node:

kubeadm init --pod-network-cidr=192.168.0.0/16

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

#On Master node:

kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.25.1/manifests/calico.yaml kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.49.0/deploy/static/provider/baremetal/deploy.yaml

##################################################################################################################################################

--- INSTALL JENKINS ---

sudo apt install openjdk-11-jre

curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key | sudo tee
/usr/share/keyrings/jenkins-keyring.asc > /dev/null echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc]
https://pkg.jenkins.io/debian-stable binary/ | sudo tee
/etc/apt/sources.list.d/jenkins.list > /dev/null sudo apt-get update -y sudo apt-get install jenkins -y

sudo systemctl enable jenkins sudo systemctl start jenkins sudo systemctl status jenkins

---TRIVY INSTALLATION STEPS---

sudo apt-get install wget apt-transport-https gnupg lsb-release

wget -qO - https://aquasecurity.github.io/trivy-repo/deb/public.key | gpg --dearmor | sudo tee /usr/share/keyrings/trivy.gpg > /dev/null

echo "deb [signed-by=/usr/share/keyrings/trivy.gpg] https://aquasecurity.github.io/trivy-repo/deb $(lsb_release -sc) main" | sudo tee -a /etc/apt/sources.list.d/trivy.list

sudo apt-get update

sudo apt-get install trivy -y