108 lines
3.1 KiB
Markdown
108 lines
3.1 KiB
Markdown
# Installation Guide for Kubernetes Cluster
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### 1. Download kubectl
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```shell
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curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
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```
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### 2. Validate kubectl
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```shell
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curl -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
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echo "$(<kubectl.sha256) kubectl" | sha256sum --check
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```
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### 3. Install kubectl
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```shell
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sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
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```
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##### If none-root access (for local user)
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```shell
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chmod +x kubectl
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mkdir -p ~/.local/bin/kubectl
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mv ./kubectl ~/.local/bin/kubectl
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# and then add ~/.local/bin/kubectl to $PATH
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```
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### 4. Verify kubectl installed
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```shell
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kubectl version --client
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```
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# Install Helm 3
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```shell
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curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
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```
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# Setup network
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```shell
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cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
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br_netfilter
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EOF
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cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
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net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1
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EOF
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sudo sysctl --system
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```
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# Install kubernetes tools
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### 1. Install CNI plugins (required for most pod network)
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```shell
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CNI_VERSION="v0.8.2"
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ARCH="amd64"
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sudo mkdir -p /opt/cni/bin
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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
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```
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```shell
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DOWNLOAD_DIR=/usr/local/bin
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sudo mkdir -p $DOWNLOAD_DIR
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```
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### 2. Install crictl (required for kubeadm / Kubelet Container Runtime Interface (CRI))
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```shell
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CRICTL_VERSION="v1.17.0"
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ARCH="amd64"
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curl -L "https://github.com/kubernetes-sigs/cri-tools/releases/download/${CRICTL_VERSION}/crictl-${CRICTL_VERSION}-linux-${ARCH}.tar.gz" | sudo tar -C $DOWNLOAD_DIR -xz
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```
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### 3. Install kubeadm, kubelet and add a kubelet systemd service
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```shell
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RELEASE="$(curl -sSL https://dl.k8s.io/release/stable.txt)"
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ARCH="amd64"
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cd $DOWNLOAD_DIR
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sudo curl -L --remote-name-all https://storage.googleapis.com/kubernetes-release/release/${RELEASE}/bin/linux/${ARCH}/{kubeadm,kubelet}
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sudo chmod +x {kubeadm,kubelet}
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RELEASE_VERSION="v0.4.0"
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curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${RELEASE_VERSION}/cmd/kubepkg/templates/latest/deb/kubelet/lib/systemd/system/kubelet.service" | sed "s:/usr/bin:${DOWNLOAD_DIR}:g" | sudo tee /etc/systemd/system/kubelet.service
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sudo mkdir -p /etc/systemd/system/kubelet.service.d
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curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${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
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sudo systemctl enable --now kubelet
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```
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### 4. Verify installation for kubernetes tools
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```shell
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kubeadm version
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```
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#### Install Docker
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```shell
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sudo swapoff -a
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wget https://sh.osa.cubetiqs.com/docker-setup.sh
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bash docker-setup.sh
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```
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#### Install some required tools
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```shell
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sudo apt-get -y install socat conntrack
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```
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### 5. Cluster on Master node
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```shell
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kubeadm init --apiserver-advertise-address=10.10.0.10 --pod-network-cidr=172.15.0.0/16
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```
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