diff --git a/app.js b/app.js
index 4576b08..f548c70 100644
--- a/app.js
+++ b/app.js
@@ -135,6 +135,14 @@ function addStaticDirectory(path, dir) {
   app.use(path, express.static(dir));
 }
 
+function getNodeId() {
+  return Number(utils.getArgv('n'));
+}
+
+function getInstanceId() {
+  return Number(utils.getArgv('i'));
+}
+
 registerHandler('Ops', 'selfChecking', async (req, rsp) => {
   if (rsp) {
     utils.rspOk(rsp);
@@ -157,3 +165,5 @@ exports.useMiddleware = useMiddleware;
 exports.registerDb = registerDb;
 exports.getDbConn = getDbConn;
 exports.addStaticDirectory = addStaticDirectory;
+exports.getNodeId = getNodeId;
+exports.getInstanceId = getInstanceId;