add retries

Author: jumpinthefire

parts/linux/cloud-init/artifacts/cse_config.sh

@@ -1004,19 +1004,19 @@ NETWORKD_EOF
         echo "Configured secondary NIC ${iface_name} (mac=${mac}, metric=${metric})"
     done
 
-    # Apply all configs in a single operation to avoid repeated network restarts
+    # Apply all configs in a single operation to avoid repeated network restarts.
     if [ "$is_netplan" = true ]; then
-        if ! netplan apply; then
+        if ! retrycmd_if_failure 5 3 10 netplan apply; then
             echo "Failed to apply netplan config for secondary NICs" >&2
             return $ERR_SECONDARY_NIC_CONFIG_FAIL
         fi
     else
-        if ! networkctl reload; then
+        if ! retrycmd_if_failure 5 3 10 networkctl reload; then
             echo "Failed to reload networkd for secondary NICs" >&2
             return $ERR_SECONDARY_NIC_CONFIG_FAIL
         fi
         for i in $(seq 1 $((nic_count - 1))); do
-            if ! networkctl up "eth${i}"; then
+            if ! retrycmd_if_failure 5 3 10 networkctl up "eth${i}"; then
                 echo "Failed to bring up eth${i}" >&2
                 return $ERR_SECONDARY_NIC_CONFIG_FAIL
             fi

spec/parts/linux/cloud-init/artifacts/cse_config_spec.sh

@@ -169,6 +169,11 @@ Describe 'cse_config.sh'
         networkctl() {
             echo "networkctl $@"
         }
+        retrycmd_if_failure() {
+            echo "retrycmd_if_failure $@"
+            shift 3
+            "$@"
+        }
 
         It 'should skip when only a single NIC is present'
             IMDS_INSTANCE_METADATA_CACHE_FILE="spec/parts/linux/cloud-init/artifacts/imds_mocks/network/single_nic.json"