GKE bulk node pool upgrader

upgrade.sh

#!/bin/bash

# Variables
PROJECT_ID="your-project-id"   # Replace with your Google Cloud project ID
CLUSTER_NAME="your-cluster-name"  # Replace with your GKE cluster name
LOCATION="us-central1"  # Replace with the zone of your cluster, e.g., us-central1-a

# Get the current GKE control plane version
CONTROL_PLANE_VERSION=$(gcloud container clusters describe "$CLUSTER_NAME" \
    --location "$LOCATION" \
    --project "$PROJECT_ID" \
    --format="value(currentMasterVersion)")

echo "Current Control Plane Version: $CONTROL_PLANE_VERSION"

# Get the list of node pools in the cluster
NODE_POOLS=$(gcloud container node-pools list --cluster="$CLUSTER_NAME" --location="$LOCATION" --project="$PROJECT_ID" --format="value(name)")

# Update each node pool to the control plane version
for NODE_POOL in $NODE_POOLS; do
    echo "Updating node pool: $NODE_POOL"
    gcloud container clusters upgrade "$CLUSTER_NAME" \
        --node-pool="$NODE_POOL" \
        --location="$LOCATION" \
        --project="$PROJECT_ID" \
        --async \
        --quiet
done

echo "All node pools have been updated to the control plane version."

version.sh

#!/bin/bash

# Variables
PROJECT_ID="your-project-id"   # Replace with your Google Cloud project ID
CLUSTER_NAME="your-cluster-name"  # Replace with your GKE cluster name
LOCATION="us-central1"  # Replace with the zone of your cluster, e.g., us-central1-a
# Get the current GKE control plane version
CONTROL_PLANE_VERSION=$(gcloud container clusters describe "$CLUSTER_NAME" \
    --location "$LOCATION" \
    --project "$PROJECT_ID" \
    --format="value(currentMasterVersion)")

echo "Current Control Plane Version: $CONTROL_PLANE_VERSION"

# Get the list of node pools in the cluster
NODE_POOLS=$(gcloud container node-pools list --cluster="$CLUSTER_NAME" --location="$LOCATION" --project="$PROJECT_ID" --format="value(name)")

# Print the version of each node pool
for NODE_POOL in $NODE_POOLS; do
    NODE_VERSION=$(gcloud container node-pools describe "$NODE_POOL" \
        --cluster="$CLUSTER_NAME" \
        --location="$LOCATION" \
        --project="$PROJECT_ID" \
        --format="value(version)")
    
    echo "Node pool: $NODE_POOL is running version: $NODE_VERSION"
done