feat: Add install-kube-u22-wg.sh
Change-Id: I059ea96369735dae76ea24b85702f35b40af74ec
This commit is contained in:
George Kitsos
parent
6c111e0b3f
commit
444548bba1
148
k8s/install-kube-u22-wg.sh
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148
k8s/install-kube-u22-wg.sh
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#!/bin/bash
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# This bash script is designed to prepare and install docker and Kubernetes for Ubuntu 22.04.
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# If an error occur, the script will exit with the value of the PID to point at the logfile.
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# Author: Ali Jawad FAHS, Activeeon
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# Set up the script variables
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STARTTIME=$(date +%s)
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PID=$(echo $$)
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EXITCODE=$PID
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DATE=$(date)
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LOGFILE="/var/log/kube-install.$PID.log"
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# Set up the logging for the script
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sudo touch $LOGFILE
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sudo chown $USER:$USER $LOGFILE
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# All the output of this shell script is redirected to the LOGFILE
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exec 3>&1 4>&2
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trap 'exec 2>&4 1>&3' 0 1 2 3
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exec 1>$LOGFILE 2>&1
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# A function to print a message to the stdout as well as as the LOGFILE
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log_print(){
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level=$1
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Message=$2
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echo "$level [$(date)]: $Message"
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echo "$level [$(date)]: $Message" >&3
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}
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# A function to check for the apt lock
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Check_lock() {
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i=0
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log_print INFO "Checking for apt lock"
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while [ `ps aux | grep [l]ock_is_held | wc -l` != 0 ]; do
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echo "Lock_is_held $i"
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ps aux | grep [l]ock_is_held
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sleep 10
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((i=i+10));
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done
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log_print INFO "Exited the while loop, time spent: $i"
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echo "ps aux | grep apt"
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ps aux | grep apt
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log_print INFO "Waiting for lock task ended properly."
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}
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# Start the Configuration
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log_print INFO "Configuration started!"
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log_print INFO "Logs are saved at: $LOGFILE"
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# Update the package list
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log_print INFO "Updating the package list."
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sudo apt-get update
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sudo unattended-upgrade -d
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# Check for lock
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Check_lock
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# Install curl
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log_print INFO "Installing curl"
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sudo apt-get install -y curl || { log_print ERROR "curl installation failed!"; exit $EXITCODE; }
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# Install Docker
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log_print INFO "Installing Docker"
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sudo apt-get install -y docker.io
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sudo systemctl enable docker
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sudo systemctl status docker
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sudo systemctl start docker
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cat <<EOF | sudo tee /etc/docker/daemon.json
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{
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"exec-opts": ["native.cgroupdriver=systemd"],
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"log-driver": "json-file",
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"log-opts": {
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"max-size": "100m"
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},
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"storage-driver": "overlay2"
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}
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EOF
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sudo systemctl restart docker
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sudo docker -v || { log_print ERROR "Docker installation failed!"; exit $EXITCODE; }
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# Adding Kubernetes Repo
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log_print INFO "Adding Kubernetes Repo"
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sudo mkdir -p /etc/apt/keyrings
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echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.26/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
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# Check for lock
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Check_lock
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curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.26/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg || { log_print ERROR "Kubernetes repo can't be added!"; exit $EXITCODE; }
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sudo apt-get update
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# Check for lock
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Check_lock
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# Install Kubernetes
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log_print INFO "Installing Kubernetes"
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sudo apt-get install -y kubeadm=1.26.15-1.1 --allow-downgrades || { log_print ERROR "kubeadm installation failed!"; exit $EXITCODE; }
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sudo apt-get install -y kubelet=1.26.15-1.1 --allow-downgrades || { log_print ERROR "kubectl installation failed!"; exit $EXITCODE; }
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sudo apt-get install -y kubectl=1.26.15-1.1 --allow-downgrades || { log_print ERROR "kubelet installation failed!"; exit $EXITCODE; }
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WIREGUARD_VPN_IP=`ip a | grep wg | grep inet | awk '{print $2}' | cut -d'/' -f1`
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sudo echo "KUBELET_EXTRA_ARGS=--node-ip=${WIREGUARD_VPN_IP}" | sudo tee -a /etc/default/kubelet
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sudo systemctl restart kubelet
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# Hoding upgrades for Kubernetes software (versions to updated manually)
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sudo apt-mark hold kubeadm kubelet kubectl
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# Checking for the installiation versions
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sudo mkdir /etc/containerd
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containerd config default | sudo tee /etc/containerd/config.toml
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sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
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sudo systemctl restart containerd
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log_print INFO "Checking Kubernetes versions"
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kubeadm version || { log_print ERROR "kubeadm installation failed!"; exit $EXITCODE; }
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kubectl version
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if [ $? -gt 1 ]
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then
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log_print ERROR "kubectl installation failed!"; exit $EXITCODE;
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fi
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kubelet --version || { log_print ERROR "kubelet installation failed!"; exit $EXITCODE; }
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# Turn off the swap momery
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if [ `grep Swap /proc/meminfo | grep SwapTotal: | cut -d" " -f14` == "0" ];
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then
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log_print INFO "The swap memory is Off"
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else
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sudo swapoff –a || { log_print ERROR "swap memory can't be turned off "; exit $EXITCODE; }
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fi
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# Declare configuration done successfully
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ENDTIME=$(date +%s)
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ELAPSED=$(( ENDTIME - STARTTIME ))
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log_print INFO "Configuration done successfully in $ELAPSED seconds "
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