How connect DO mongodb with MONGO_URL?

what is mongourl for DO? just using password

MONGO_URL follows the format “mongodb://user:password@host:port/databasename”, so adjust as needed for your environment. For a Digital Ocean specific example, take a look at the MONGO_URL environment variable set in Step 4 of How To Deploy a Meteor.js Application on Ubuntu 14.04 with Nginx.

thx, I mean connect mongo url from my local meteor app

You’re looking for the mongo URL of your locally running meteor app? In that case (while meteor is running):

meteor mongo --url