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