apply limit on cloudbuild.yaml

Author: chandra-siri

cloudbuild/run_zonal_tests.sh

@@ -23,5 +23,4 @@ echo '--- Setting up environment variables on VM ---'
 export ZONAL_BUCKET=${_ZONAL_BUCKET}
 export RUN_ZONAL_SYSTEM_TESTS=True
 echo '--- Running Zonal tests on VM ---'
-ulimit -n 1048576
 pytest -vv -s --log-format='%(asctime)s %(levelname)s %(message)s' --log-date-format='%H:%M:%S' tests/system/test_zonal.py

cloudbuild/zb-system-tests-cloudbuild.yaml

@@ -52,6 +52,13 @@ steps:
     args:
       - "-c"
       - |
+        ulimit -Sn 4096
+        # Double-check the limit was applied
+        CURRENT_LIMIT=$(ulimit -n)
+        if [ "$CURRENT_LIMIT" -lt 4096 ]; then
+          echo "ERROR: Failed to set ulimit to 4096. Current limit is $CURRENT_LIMIT  "
+          exit 1
+        fi
         set -e
         # Wait for the VM to be fully initialized and SSH to be ready.
         for i in {1..10}; do