129 lines
3.7 KiB
Markdown
129 lines
3.7 KiB
Markdown
# Installation Guide for Kubernetes Cluster
|
|
|
|
### 1. Download kubectl
|
|
```shell
|
|
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
|
|
```
|
|
### 2. Validate kubectl
|
|
```shell
|
|
curl -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
|
|
echo "$(<kubectl.sha256) kubectl" | sha256sum --check
|
|
```
|
|
|
|
### 3. Install kubectl
|
|
```shell
|
|
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
|
|
```
|
|
|
|
##### If none-root access (for local user)
|
|
```shell
|
|
chmod +x kubectl
|
|
mkdir -p ~/.local/bin/kubectl
|
|
mv ./kubectl ~/.local/bin/kubectl
|
|
# and then add ~/.local/bin/kubectl to $PATH
|
|
```
|
|
|
|
### 4. Verify kubectl installed
|
|
```shell
|
|
kubectl version --client
|
|
```
|
|
|
|
# Install Helm 3
|
|
```shell
|
|
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
|
|
```
|
|
|
|
# Setup network
|
|
```shell
|
|
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
|
|
br_netfilter
|
|
EOF
|
|
|
|
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
|
|
net.bridge.bridge-nf-call-ip6tables = 1
|
|
net.bridge.bridge-nf-call-iptables = 1
|
|
EOF
|
|
|
|
sudo sysctl --system
|
|
```
|
|
|
|
# Install kubernetes tools
|
|
### 1. Install CNI plugins (required for most pod network)
|
|
```shell
|
|
CNI_VERSION="v0.8.2"
|
|
ARCH="amd64"
|
|
sudo mkdir -p /opt/cni/bin
|
|
curl -L "https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz" | sudo tar -C /opt/cni/bin -xz
|
|
```
|
|
|
|
```shell
|
|
DOWNLOAD_DIR=/usr/local/bin
|
|
sudo mkdir -p $DOWNLOAD_DIR
|
|
```
|
|
|
|
### 2. Install crictl (required for kubeadm / Kubelet Container Runtime Interface (CRI))
|
|
```shell
|
|
CRICTL_VERSION="v1.17.0"
|
|
ARCH="amd64"
|
|
curl -L "https://github.com/kubernetes-sigs/cri-tools/releases/download/${CRICTL_VERSION}/crictl-${CRICTL_VERSION}-linux-${ARCH}.tar.gz" | sudo tar -C $DOWNLOAD_DIR -xz
|
|
```
|
|
|
|
### 3. Install kubeadm, kubelet and add a kubelet systemd service
|
|
```shell
|
|
RELEASE="$(curl -sSL https://dl.k8s.io/release/stable.txt)"
|
|
ARCH="amd64"
|
|
cd $DOWNLOAD_DIR
|
|
sudo curl -L --remote-name-all https://storage.googleapis.com/kubernetes-release/release/${RELEASE}/bin/linux/${ARCH}/{kubeadm,kubelet}
|
|
sudo chmod +x {kubeadm,kubelet}
|
|
|
|
RELEASE_VERSION="v0.4.0"
|
|
curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${RELEASE_VERSION}/cmd/kubepkg/templates/latest/deb/kubelet/lib/systemd/system/kubelet.service" | sed "s:/usr/bin:${DOWNLOAD_DIR}:g" | sudo tee /etc/systemd/system/kubelet.service
|
|
sudo mkdir -p /etc/systemd/system/kubelet.service.d
|
|
curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${RELEASE_VERSION}/cmd/kubepkg/templates/latest/deb/kubeadm/10-kubeadm.conf" | sed "s:/usr/bin:${DOWNLOAD_DIR}:g" | sudo tee /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
|
|
|
|
sudo systemctl enable --now kubelet
|
|
```
|
|
|
|
### 4. Verify installation for kubernetes tools
|
|
```shell
|
|
kubeadm version
|
|
```
|
|
|
|
#### Disable swap and install docker.io
|
|
```shell
|
|
sudo swapoff -a
|
|
wget https://sh.osa.cubetiqs.com/docker-setup.sh
|
|
bash docker-setup.sh
|
|
sudo systemctl start docker
|
|
sudo systemctl enable 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
|
|
```
|
|
|
|
#### Install some required tools
|
|
```shell
|
|
sudo apt-get -y install socat conntrack
|
|
```
|
|
|
|
### 5. Cluster on Master node
|
|
```shell
|
|
sudo kubeadm init
|
|
|
|
mkdir -p $HOME/.kube
|
|
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
|
|
sudo chown $(id -u):$(id -g) $HOME/.kube/config
|
|
```
|
|
|
|
```shell
|
|
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
|
|
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
|