Diff changes between manifests

applyset-deploy.sh

@@ -2,6 +2,27 @@
 
 set -euo pipefail
 
+first_server="${SERVERS%% *}"
+previous_manifest=$(ssh -T "root@$first_server" << EOF
+if [[ -f "$GCROOTDIR/${NAME}.yml" ]]; then
+	cat "$GCROOTDIR/${NAME}.yml"
+fi
+EOF
+)
+
+set +e
+if [ -z "$previous_manifest" ]; then
+	echo No previous manifest found!
+else
+	$DYFF between --set-exit-code <(echo $previous_manifest) $MANIFEST
+	if [ $? -eq 0 ]; then
+		exit 0
+	fi
+fi
+set -e
+
+read -r -p "Continue? " response
+
 echo Uploading closure...
 for server in $SERVERS; do
 	echo Uploading closure to $server...