Adding install dependencies for helm kubectl and eksctl

Author: piyushdaftary

helm_chart/install_dependencies.sh

@@ -10,16 +10,91 @@ check_status() {
 
 check_status
 
-# Add additional dependencies below as needed
+set -e  # Exit on any error
 
-# Example: Installing an additional dependency (replace with actual URL)
-# echo "Installing Example Dependency..."
-# kubectl apply -f "https://example.com/path/to/dependency.yaml"
-# check_status
+# Function to check if command succeeded
+check_success() {
+    if [ $? -ne 0 ]; then
+        echo "Error: $1"
+        exit 1
+    fi
+}
+
+# Function to check if a command exists
+command_exists() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+# Install helm if not exists
+if command_exists helm; then
+    echo "helm is already installed. Version: $(helm version)"
+else
+    echo "Installing helm..."
+    curl -fsSL -o /tmp/get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
+    check_success "Failed to download Helm installation script"
+
+    chmod 700 /tmp/get_helm.sh
+    /tmp/get_helm.sh
+    check_success "Helm installation failed"
+fi
+
+# Determine architecture
+ARCH=$(uname -m)
+if [ "$ARCH" = "x86_64" ]; then
+    KUBECTL_ARCH="amd64"
+else
+    KUBECTL_ARCH="arm64"
+fi
+
+# Install kubectl if not exists
+if command_exists kubectl; then
+    echo "kubectl is already installed. Version: $(kubectl version --client)"
+else
+    echo "Installing kubectl..."
+    KUBECTL_VERSION=$(curl -L -s https://dl.k8s.io/release/stable.txt)
+    curl -LO -sS "https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/${KUBECTL_ARCH}/kubectl"
+    curl -LO -sS "https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/${KUBECTL_ARCH}/kubectl.sha256"
+
+    # Verify kubectl checksum
+    if echo "$(cat kubectl.sha256)  kubectl" | sha256sum --check; then
+        mv kubectl /tmp
+        chmod +x /tmp/kubectl
+        sudo mv /tmp/kubectl /usr/local/bin
+        check_success "Failed to install kubectl"
+    else
+        echo "kubectl checksum verification failed"
+        exit 1
+    fi
+fi
+
+# Install eksctl if not exists
+if command_exists eksctl; then
+    echo "eksctl is already installed. Version: $(eksctl version)"
+else
+    echo "Installing eksctl..."
+    SYSTEM=$(uname -s)
+    PLATFORM="${SYSTEM}_${KUBECTL_ARCH}"
+    EKSCTL_FILE="eksctl_${PLATFORM}.tar.gz"
+
+    curl -sLO "https://github.com/eksctl-io/eksctl/releases/latest/download/${EKSCTL_FILE}"
+    check_success "Failed to download eksctl"
+
+    # Verify eksctl checksum
+    if curl -sL "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --check; then
+        tar -xzf "./${EKSCTL_FILE}" -C /tmp
+        rm "./${EKSCTL_FILE}"
+        sudo mv /tmp/eksctl /usr/local/bin
+        check_success "Failed to install eksctl"
+    else
+        echo "eksctl checksum verification failed"
+        exit 1
+    fi
+fi
 
-# Add more dependencies here
-# echo "Installing Another Dependency..."
-# kubectl apply -f "https://example.com/path/to/another-dependency.yaml"
-# check_status
+echo "Installation check completed successfully!"
+echo "Installed versions:"
+echo "helm: $(helm version)"
+echo "kubectl: $(kubectl version --client)"
+echo "eksctl: $(eksctl version)"
 
 echo "All dependencies installed successfully."