In MongoDB, how do I print all collection counts and indexes?

Question

I need to verify data before migrating to another server and I want to make sure all documents and indexes and transferred properly. Is there a command and I run to do this?

Answer 1

This script will output what you want:

db = db.getSiblingDB('admin');

var dbs = db.adminCommand('listDatabases');

dbs.databases.forEach(function(database){
  print("Database: " + database.name);
  print("-----");

  db = db.getSiblingDB(database.name);

  db.getCollectionNames().forEach(function(collection) {
    indexes = db[collection].getIndexes();
    print("Collection '" + collection + "' documents: " + db[collection].count());
    print("Indexes for " + collection + ":");
    printjson(indexes);
  });

  print("");

});