Update workflow yml

Author: tuhaihe

.github/workflows/sandbox-validation.yml

@@ -91,7 +91,9 @@ jobs:
           cd devops/sandbox
           ./run.sh -c ${{ matrix.version }}
 
-          sleep 60  # Wait for containers to initialize
+          echo "Waiting for Apache Cloudberry deployment to complete..."
+          timeout 120 bash -c 'until docker logs cbdb-cdw 2>&1 | grep -q "DEPLOYMENT SUCCESSFUL"; do sleep 10; echo "Still waiting for deployment..."; done'
+          echo "Deployment completed successfully!"
         timeout-minutes: 30
 
       - name: Test database operations
@@ -162,8 +164,19 @@ jobs:
           ./run.sh -c ${{ matrix.version }} -m
 
           sleep 120  # Wait for containers to initialize
+          echo "Waiting for Apache Cloudberry multi-node deployment to complete..."
+          timeout 120 bash -c 'until docker logs cbdb-cdw 2>&1 | grep -q "DEPLOYMENT SUCCESSFUL"; do sleep 15; echo "Still waiting for multi-node deployment..."; done'
+          echo "Multi-node deployment completed successfully!"
         timeout-minutes: 30
 
+      - name: Test SSH connectivity between nodes
+        run: |
+          echo "Testing SSH connectivity from coordinator to all nodes..."
+          docker exec -u gpadmin cbdb-cdw bash -l -c "ssh -o StrictHostKeyChecking=no sdw1 'hostname'"
+          docker exec -u gpadmin cbdb-cdw bash -l -c "ssh -o StrictHostKeyChecking=no sdw2 'hostname'"
+          docker exec -u gpadmin cbdb-cdw bash -l -c "ssh -o StrictHostKeyChecking=no scdw 'hostname'"
+          echo "✅ SSH connectivity test passed"
+
       - name: Test database operations
         run: |
           echo "Waiting for database readiness (up to 60s)..."