Meteor app on Modulus — how to reset database

Question

I'm running a staged Meteor app on Modulus and would like to know if there's a way to do something similar to 'meteor reset' on the remote mongoDB.

I could use mongo's command line by running db.dropDatabase(); however this also removes system.users which contains the mongo database accounts.

Interested to know how this can be achieved in the flow of deploying.

Answer 1

When you run meteor reset then meteor recursively removes all dirs and files from: .meteor/local.

  # source : meteor/tools/commands.js (line 806-807)
  ...
  var localDir = path.join(options.appDir, '.meteor', 'local');
  files.rm_recursive(localDir);
  ...

I understand that you would like to remove particular collections from database stored in MongoDB. There are few ways of doing that:

Remove collections from shell or mongo shell

Write script which loops over names of collections you want to drop and then execute db.getCollection(name).drop() on each one.

From cmd: mongo [database] --eval "db.getCollection([collectionName]).drop();"

or from mongo shell:

db.getCollection([collectionName]).drop();

Remove collections from MongoDB using Robomongo

This is straightforward method : click and remove.

Helpful note if one can connect to mongo's server with ssh:

If you have SSH access to server where is mongo then you can tunnel remote port Y to local port X, so mongo will be available locally on port X :

ssh -L27018:localhost:27017 user@host

Then in Robomongo you create connection to localhost:27018 and you have access to remote db.

Remove collections directly from Meteor App.

if(Meteor.isServer){
  Collection.remove({}) 
}

One of my production app removes some collections when new version is deployed:

 if(Meteor.isServer){
    Meteor.startup(function(){
      if(cleanDB){
        CollectionA.remove({});
        CollectionB.remove({});
        CollectionC.remove({});
      }
    })
 }

Answer 2

If you'd like to use the MongoDB shell on Modulus:

db.getCollectionNames().forEach(function(name) {
  if (name.indexOf('system.') === -1) {
    db.getCollection(name).drop();
  }
})

Use the Robomongo app to connect and execute this, or on the command line:

mongo <dbname> --host proximus.modulusmongo.net:27017 --username <username> --password <password> --eval "db.getCollectionNames().forEach(function(name) {if (name.indexOf('system.') === -1) {db.getCollection(name).drop();}})"