kubernetes-mcp-server

#!/usr/bin/env bash # Configuration constants NAMESPACE="rollout-test" DEPLOYMENT="web-app" EXPECTED_IMAGE="nginx:1.22" TIMEOUT="120s" TASK_NAME="rolling-update-deployment" echo "Starting verification for $TASK_NAME..." # Wait for the rollout to complete echo "Waiting for deployment '$DEPLOYMENT' in namespace '$NAMESPACE' to complete its rollout..." if ! kubectl rollout status deployment/$DEPLOYMENT -n $NAMESPACE --timeout=$TIMEOUT; then echo "ERROR: Deployment rollout failed or timed out after $TIMEOUT." exit 1 fi echo "Deployment rollout completed successfully." # Verify each pod is running the new image echo "Verifying container images for all pods managed by the deployment..." FAILURE=0 # Get the pod-template-hash from the new, active ReplicaSet # (The one that has a desired replica count greater than 0) ACTIVE_POD_HASH=$(kubectl get rs -n $NAMESPACE -l app=$DEPLOYMENT -o jsonpath='{.items[?(@.spec.replicas > 0)].metadata.labels.pod-template-hash}') if [ -z "$ACTIVE_POD_HASH" ]; then echo "ERROR: Could not find active ReplicaSet hash for deployment '$DEPLOYMENT'." exit 1 fi echo "Found active pod-template-hash: $ACTIVE_POD_HASH. Verifying pods with this label..." # Get a list of pod names and images *only* from the active ReplicaSet POD_INFO=$(kubectl get pods -n $NAMESPACE -l app=$DEPLOYMENT,pod-template-hash=$ACTIVE_POD_HASH -o jsonpath='{range .items[*]}{.metadata.name}{" "}{.spec.containers[0].image}{"\n"}{end}') if [ -z "$POD_INFO" ]; then echo "ERROR: Could not find any pods for deployment '$DEPLOYMENT' with hash '$ACTIVE_POD_HASH'." fi # Loop through each line of the pod info while read -r POD_NAME ACTUAL_IMAGE; do if [[ "$ACTUAL_IMAGE" == "$EXPECTED_IMAGE" ]]; then echo "PASSED: Pod '$POD_NAME' is running the correct image ($ACTUAL_IMAGE)." else echo "FAILED: Pod '$POD_NAME' has the wrong image. Expected: $EXPECTED_IMAGE, Found: $ACTUAL_IMAGE" FAILURE=1 fi done <<< "$POD_INFO" if [ $FAILURE -eq 1 ]; then echo "Verification failed: One or more pods are not running the correct image." exit 1 else echo "Verification successful for $TASK_NAME." exit 0 fi