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Create Weave-Net-Enabled Kubernetes Cluster with kubeadm
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#!/bin/bash | |
set -x | |
# 1. Become sudo | |
sudo su | |
# 2. Install Docker | |
apt-get update | |
apt-get install -y docker.io | |
# 3. Enable Docker Service | |
systemctl enable docker.service | |
# 4. Disable Swap | |
swapoff -a | |
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab | |
# 5. Install kubelet, kubeadm, and kubectl | |
apt-get update && apt-get install -y apt-transport-https curl | |
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - | |
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list | |
deb http://apt.kubernetes.io/ kubernetes-xenial main | |
EOF | |
apt-get update | |
apt-get install -y kubelet kubeadm kubectl | |
# 6. MASTER ONLY: Configure cgroup driver used by kubelet on Master Node | |
docker info | grep -i cgroup | |
cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf | |
sed -i "s/cgroup-driver=systemd/cgroup-driver=cgroupfs/g" /etc/systemd/system/kubelet.service.d/10-kubeadm.conf | |
systemctl daemon-reload | |
systemctl restart kubelet | |
# 7. MASTER ONLY: Run kubeadm init | |
# Make sure to copy the 'kubeadm join' from the command output | |
# It will be needed for worker nodes to join the cluster | |
kubeadm init | |
exit | |
# 8. MASTER ONLY: Let non-root users use kubectl | |
mkdir -p $HOME/.kube | |
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config | |
sudo chown $(id -u):$(id -g) $HOME/.kube/config | |
# 9. MASTER ONLY: Install Weave Net | |
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')" | |
# 10. MASTER ONLY: Taint master node so you can run pods in it | |
kubectl taint nodes --all node-role.kubernetes.io/master- | |
# 11. Setup SSH on root so you can scp certificate | |
sudo su | |
apt install -y ssh | |
passwd | |
sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config | |
service ssh restart | |
exit | |
set +x |
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