From 089e98e2a9968411702c066ed0190374e6770643 Mon Sep 17 00:00:00 2001 From: tehNooB <125163838+JamesTurland@users.noreply.github.com> Date: Mon, 30 Oct 2023 22:50:54 +0000 Subject: [PATCH] Create rke2.sh --- Kubernetes/RKE2/rke2.sh | 237 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 237 insertions(+) create mode 100644 Kubernetes/RKE2/rke2.sh diff --git a/Kubernetes/RKE2/rke2.sh b/Kubernetes/RKE2/rke2.sh new file mode 100644 index 0000000..ef9abe1 --- /dev/null +++ b/Kubernetes/RKE2/rke2.sh @@ -0,0 +1,237 @@ +#!/bin/bash + +echo -e " \033[33;5m __ _ _ ___ \033[0m" +echo -e " \033[33;5m \ \(_)_ __ ___( )__ / _ \__ _ _ __ __ _ __ _ ___ \033[0m" +echo -e " \033[33;5m \ \ | '_ \` _ \/ __| / /_\/ _\` | '__/ _\` |/ _\` |/ _ \ \033[0m" +echo -e " \033[33;5m /\_/ / | | | | | \__ \ / /_\\ (_| | | | (_| | (_| | __/ \033[0m" +echo -e " \033[33;5m \___/|_|_| |_| |_|___/ \____/\__,_|_| \__,_|\__, |\___| \033[0m" +echo -e " \033[33;5m |___/ \033[0m" + +echo -e " \033[36;5m _ _________ ___ _ _ _ \033[0m" +echo -e " \033[36;5m | |/ |__ / __| |_ _|_ _ __| |_ __ _| | | \033[0m" +echo -e " \033[36;5m | ' < |_ \__ \ | || ' \(_-| _/ _\` | | | \033[0m" +echo -e " \033[36;5m |_|\_|___|___/ |___|_||_/__/\__\__,_|_|_| \033[0m" +echo -e " \033[36;5m \033[0m" +echo -e " \033[32;5m https://youtube.com/@jims-garage \033[0m" +echo -e " \033[32;5m \033[0m" + + +############################################# +# YOU SHOULD ONLY NEED TO EDIT THIS SECTION # +############################################# + +# Version of Kube-VIP to deploy +KVVERSION="v0.6.3" + +# Set the IP addresses of the admin, masters, and workers nodes +admin=192.168.3.5 +master1=192.168.3.21 +master2=192.168.3.22 +master3=192.168.3.23 +worker1=192.168.3.24 +worker2=192.168.3.25 + +# User of remote machines +user=ubuntu + +# Interface used on remotes +interface=eth0 + +# Set the virtual IP address (VIP) +vip=192.168.3.50 + +# Array of all master nodes +allmasters=($master1 $master2 $master3) + +# Array of master nodes +masters=($master2 $master3) + +# Array of worker nodes +workers=($worker1 $worker2) + +# Array of all +all=($master1 $master2 $master3 $worker1 $worker2) + +# Array of all minus master1 +allnomaster1=($master2 $master3 $worker1 $worker2) + +#Loadbalancer IP range +lbrange=192.168.3.60-192.168.3.80 + +#ssh certificate name variable +certName=id_rsa + +############################################# +# DO NOT EDIT BELOW # +############################################# +# For testing purposes - in case time is wrong due to VM snapshots +sudo timedatectl set-ntp off +sudo timedatectl set-ntp on + +# Move SSH certs to ~/.ssh and change permissions +cp /home/$user/{$certName,$certName.pub} /home/$user/.ssh +chmod 600 /home/$user/.ssh/$certName +chmod 644 /home/$user/.ssh/$certName.pub + +# Install Kubectl if not already present +if ! command -v kubectl version &> /dev/null +then + echo -e " \033[31;5mKubectl not found, installing\033[0m" + curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" + sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl +else + echo -e " \033[32;5mKubectl already installed\033[0m" +fi + +# Create SSH Config file to ignore checking (don't use in production!) +echo "StrictHostKeyChecking no" > ~/.ssh/config + +#add ssh keys for all nodes +for node in "${all[@]}"; do + ssh-copy-id $user@$node +done + +# Step 1: Create Kube VIP +# create RKE2's self-installing manifest dir +sudo mkdir -p /var/lib/rancher/rke2/server/manifests +# Install the kube-vip deployment into rke2's self-installing manifest folder +curl -sL https://raw.githubusercontent.com/JamesTurland/JimsGarage/main/Kubernetes/RKE2/k3s | vipAddress=$vip vipInterface=eth0 sh | sudo tee /var/lib/rancher/rke2/server/manifests/kube-vip.yaml +# Find/Replace all k3s entries to represent rke2 +sudo sed -i 's/k3s/rke2/g' /var/lib/rancher/rke2/server/manifests/kube-vip.yaml +# copy kube-vip.yaml to home directory +sudo cp /var/lib/rancher/rke2/server/manifests/kube-vip.yaml ~/kube-vip.yaml +# change owner +sudo chown $user:$user kube-vip.yaml +# make kube folder to run kubectl later +mkdir ~/.kube + +# create the rke2 config file +sudo mkdir -p /etc/rancher/rke2 +touch config.yaml +echo "tls-san:" >> config.yaml +echo " - $vip" >> config.yaml +# copy config.yaml to rancher directory +sudo cp ~/config.yaml /etc/rancher/rke2/config.yaml + +# update path with rke2-binaries +echo 'export KUBECONFIG=/etc/rancher/rke2/rke2.yaml' >> ~/.bashrc ; echo 'export PATH=${PATH}:/var/lib/rancher/rke2/bin' >> ~/.bashrc ; echo 'alias k=kubectl' >> ~/.bashrc ; source ~/.bashrc ; + +# Step 2: Copy kube-vip.yaml and certs to all masters +for newnode in "${allmasters[@]}"; do + scp -i ~/.ssh/$certName $HOME/kube-vip.yaml $user@$newnode:~/kube-vip.yaml + scp -i ~/.ssh/$certName $HOME/config.yaml $user@$newnode:~/config.yaml + scp -i ~/.ssh/$certName ~/.ssh/{$certName,$certName.pub} $user@$newnode:~/.ssh + echo -e " \033[32;5mCopied successfully!\033[0m" +done + +# Step 3: Connect to Master1 and move kube-vip.yaml and config.yaml. Then install RKE2, copy token back to admin machine. We then use the token to bootstrap additional masternodes +ssh -tt $user@$master1 -i ~/.ssh/$certName sudo su <> ~/.bashrc ; echo 'export PATH=${PATH}:/var/lib/rancher/rke2/bin' >> ~/.bashrc ; echo 'alias k=kubectl' >> ~/.bashrc ; source ~/.bashrc ; +curl -sfL https://get.rke2.io | sh - +systemctl enable rke2-server.service +systemctl start rke2-server.service +echo "StrictHostKeyChecking no" > ~/.ssh/config +ssh-copy-id -i /home/$user/.ssh/$certName $user@$admin +scp -i /home/$user/.ssh/$certName /var/lib/rancher/rke2/server/token $user@$admin:~/token +scp -i /home/$user/.ssh/$certName /etc/rancher/rke2/rke2.yaml $user@$admin:~/.kube/rke2.yaml +kubectl apply -f https://kube-vip.io/manifests/rbac.yaml +exit +EOF +echo -e " \033[32;5mMaster1 Completed\033[0m" + +# Step 4: Install kube-vip as network LoadBalancer - Install the kube-vip Cloud Provider +kubectl apply -f https://raw.githubusercontent.com/kube-vip/kube-vip-cloud-provider/main/manifest/kube-vip-cloud-controller.yaml +#IP range for loadbalancer services to use +kubectl create configmap -n kube-system kubevip --from-literal range-global=$lbrange + +# Step 5: Set variable to the token we just extracted, set kube config location +token=`cat token` +sudo cat ~/.kube/rke2.yaml | sed 's/127.0.0.1/'$vip'/g' > $HOME/.kube/config +sudo chown $(id -u):$(id -g) $HOME/.kube/config +export KUBECONFIG=~/.kube/config +kubectl get nodes + +# Step 6: Add other Masternodes, note we import the token we extracted from step 3 +for newnode in "${masters[@]}"; do + ssh -tt $user@$newnode -i ~/.ssh/$certName sudo su <> /etc/rancher/rke2/config.yaml + echo "server: https://$master1:9345" >> /etc/rancher/rke2/config.yaml + echo "tls-san:" >> /etc/rancher/rke2/config.yaml + echo " - $vip" >> /etc/rancher/rke2/config.yaml + curl -sfL https://get.rke2.io | sh - + systemctl enable rke2-server.service + systemctl start rke2-server.service + exit +EOF + echo -e " \033[32;5mMaster node joined successfully!\033[0m" +done + +kubectl get nodes -o wide + +# Step 7: Add Workers +for newnode in "${workers[@]}"; do + ssh -tt $user@$newnode -i ~/.ssh/$certName sudo su <> /etc/rancher/rke2/config.yaml + echo "server: https://$vip:9345" >> /etc/rancher/rke2/config.yaml + curl -sfL https://get.rke2.io | INSTALL_RKE2_TYPE="agent" sh - + systemctl enable rke2-agent.service + systemctl start rke2-agent.service + exit +EOF + echo -e " \033[32;5mMaster node joined successfully!\033[0m" +done + +kubectl get nodes -o wide + +#Step 8: Setup Kube-VIP as LoadBalancer +#IP range for loadbalancer services to use +kubectl create configmap -n kube-system kubevip --from-literal range-global=$lbrange + +# Step 9: Install Rancher (Optional - Delete if not required) +#Install Helm +curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 +chmod 700 get_helm.sh +./get_helm.sh + +# Add Rancher Helm Repo & create namespace +helm repo add rancher-alpha https://releases.rancher.com/server-charts/alpha +kubectl create namespace cattle-system + +# Install Cert-Manager +kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.11.0/cert-manager.crds.yaml +helm repo add jetstack https://charts.jetstack.io +helm repo update +helm install cert-manager jetstack/cert-manager \ +--namespace cert-manager \ +--create-namespace \ +--version v1.11.0 +kubectl get pods --namespace cert-manager + +# Install Rancher +helm install rancher rancher-alpha/rancher --devel \ + --namespace cattle-system \ + --set hostname=rancher.my.org \ + --set bootstrapPassword=admin +kubectl -n cattle-system rollout status deploy/rancher +kubectl -n cattle-system get deploy rancher + +# Add Rancher LoadBalancer +kubectl get svc -n cattle-system +# sometimes it skips the install so do it again here - need to debug +kubectl apply -f https://raw.githubusercontent.com/kube-vip/kube-vip-cloud-provider/main/manifest/kube-vip-cloud-controller.yaml +kubectl expose deployment rancher --name=rancher-lb --port=443 --type=LoadBalancer -n cattle-system +while [[ $(kubectl get svc name=rancher-lb -n cattle-system 'jsonpath={..status.conditions[?(@.type=="Pending")].status}') = "True" ]]; do + sleep 5 + echo -e " \033[32;5mWaiting for LoadBalancer to come online\033[0m" +done +kubectl get svc -n cattle-system + +echo -e " \033[32;5mAccess Rancher from the IP above - Password is admin!\033[0m"