Add install kubectl

README.md

@@ -1,2 +1,29 @@
-# kubernetes-installation
-Installation Guide for Kubernetes Cluster
+# 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
+```