Update installK8S-v1-23.sh

Author: leaddevops

scripts/installK8S-v1-23.sh

@@ -1,53 +1,19 @@
 #!/bin/bash
 
 install_ubuntu() {
-   which docker 
-   if [ $? -eq 0 ];then
-      #### Remove any pre installed docker packages  
-      sudo systemctl stop docker.service
-      sudo apt-mark unhold docker-ce
-      sudo apt-get remove -y docker docker-ce docker-ce-cli docker.io containerd runc kubeadm kubectl kubelet
-      cd /var/lib
-      sudo rm -r docker
-   else
-      echo "docker not installed.. continue to install"
-   fi
-
-   #### Install Specific Docker version
-   sudo apt-get update
-   sudo apt-get install -y apt-transport-https ca-certificates curl gnupg-agent software-properties-common
- 
-   ## Add Dockers official GPG key
-   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
-   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
-   sudo apt-get update ; clear
-   sudo apt-get install -y docker-ce --allow-downgrades --allow-change-held-packages
-
-   if [ $? -eq 0 ];then
-       if [ -f /etc/docker/daemon.json ];then
-         echo "cgroup config is already configured skipping.."
-       else 
-          echo "docker-ce is successfully installed"
-          yum install -y wget
-          sudo wget https://raw.githubusercontent.com/lerndevops/labs/master/kubernetes/0-install/daemon.json -P /etc/docker
-          sudo systemctl restart docker.service ; clear
-       fi
-   else
-      echo "issue with docker-ce installation - process abort"
-      exit 1
-   fi
-   echo " "
 
    #### Install Kubernetes latest components
+   sudo apt-get update
+   sudo apt-get install -y apt-transport-https ca-certificates curl
    echo "starting the installation of k8s components (kubeadm,kubelet,kubectl) ...."
-   echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
-   curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
-   sudo apt-get update ; clear
-   sudo apt-get install -y kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00 --allow-downgrades --allow-change-held-packages
+   sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
+   echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
+   sudo apt-get update
+   sudo apt-get install -y kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00
 
    if [ $? -eq 0 ];then
       echo "kubelet, kubeadm & kubectl are successfully installed"
-      sudo apt-mark hold kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00 docker-ce docker-ce-cli
+      sudo apt-mark hold kubelet kubeadm kubectl
    else
       echo "issue in installing kubelet, kubeadm & kubectl - process abort"
       exit 2
@@ -56,54 +22,40 @@ install_ubuntu() {
 
 install_centos() {
 
-    which docker
-    if [ $? -eq 0 ];then
-       sudo yum remove docker-client-latest docker-latest docker-latest-logrotate docker-logrotate docker-engine
-       cd /var/lib
-       rm -rf docker
-       yum clean
-    else
-       echo "docker is not installed... continue to install"
-    fi
+cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
+[kubernetes]
+name=Kubernetes
+baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch
+enabled=1
+gpgcheck=1
+gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+exclude=kubelet kubeadm kubectl
+EOF
+  
+sudo setenforce 0
+sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
+sudo yum install -y kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00 --disableexcludes=kubernetes
+sudo systemctl enable --now kubelet
 
-    sudo yum install -y yum-utils   ## device-mapper-persistent-data lvm2
-    sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
-    sudo yum install -y docker-ce docker-ce-cli containerd.io
-    sudo systemctl enable docker.service
-    
-    if [ $? -eq 0 ];then
-       if [ -f /etc/docker/daemon.json ];then
-          echo "cgroup config is already configured skipping.."
-       else 
-          echo "docker-ce is successfully installed"
-          yum install -y wget
-          sudo wget https://raw.githubusercontent.com/lerndevops/labs/master/kubernetes/0-install/daemon.json -P /etc/docker
-          sudo service docker restart ; clear
-       fi
-    else
-       echo "issue with docker-ce installation - process abort"
-       exit 1
-    fi
-   echo " "
+}
 
-    # Install kubeadm, kubelet, kubectl 
+install_amzn() {
 
 cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
 [kubernetes]
 name=Kubernetes
 baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch
 enabled=1
 gpgcheck=1
-repo_gpgcheck=1
 gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
 exclude=kubelet kubeadm kubectl
 EOF
 
-    # Set SELinux in permissive mode (effectively disabling it)
-    sudo setenforce 0
-    sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
-    sudo yum install -y kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00 --disableexcludes=kubernetes
-    sudo systemctl enable --now kubelet
+sudo setenforce 0
+sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
+sudo yum install -y kubelet=1.23.6-00 kubeadm=1.23.6-00 kubectl=1.23.6-00 --disableexcludes=kubernetes
+sudo systemctl enable --now kubelet
+
 }
 ################ MAIN ###################
 
@@ -113,7 +65,7 @@ if [ -f /etc/os-release ];then
    if [ $osname == "ubuntu" ];then
        install_ubuntu
    elif [ $osname == "amzn" ];then
-       install_centos
+       install_amzn
    elif [ $osname == "centos" ];then
        install_centos
   fi