tom@ama:~/nodebb$ mongo nodebb
MongoDB shell version: 3.2.12
connecting to: nodebb
Server has startup warnings:
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten]
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten]
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-02-19T11:42:57.746+0000 I CONTROL [initandlisten]

show users
{
"_id" : "nodebb.nodebbsvc",
"user" : "nodebbsvc",
"db" : "nodebb",
"roles" : [
{
"role" : "readWrite",
"db" : "nodebb"
}
]
}

tom@ama:~/nodebb$ ./nodebb setup
19/2 11:33:56 [23827] - info: NodeBB Setup Triggered via Command Line

Welcome to NodeBB!

This looks like a new installation, so you'll have to answer a few questions about your environment before we can proceed.
Press enter to accept the default setting (shown in brackets).

19/2 11:33:56 [23827] - info: Now configuring mongo database:
19/2 11:33:56 [23827] - error: Error saving server configuration! EACCES: permission denied, open '/home/tom/nodebb/config.json'
19/2 11:33:56 [23827] - warn: NodeBB Setup Aborted.
Error: EACCES: permission denied, open '/home/tom/nodebb/config.json'
at Error (native)

Ok, getting closer...

One thing I'm not sure about was the edit mongo .conf - It didn't have an auth=true ???

tom@ama:~/nodebb$ sudo nano /etc/mongod.conf

GNU nano 2.5.3 File: /etc/mongod.conf Modified

#security:

#operationProfiling:

#replication:

#sharding:

Enterprise-Only Options:

#auditLog:

#snmp:

???

Then on to node install I get this:

19/2 11:24:02 [23753] - info: Now configuring mongo database:
Host IP or address of your MongoDB instance (127.0.0.1)
Host port of your MongoDB instance (27017)
MongoDB username mongoadmin
Password of your MongoDB database
MongoDB database name (nodebb)
Configuration Saved OK
19/2 11:24:40 [23753] - error: NodeBB could not connect to your Mongo database. Mongo returned the following error: Authentication failed.
19/2 11:24:40 [23753] - warn: NodeBB Setup Aborted.
MongoError: Authentication failed.
at Function.MongoError.create (/home/tom/nodebb/node_modules/mongodb-core/lib/error.js:31:11)
at /home/tom/nodebb/node_modules/mongodb-core/lib/connection/pool.js:483:72
at authenticateStragglers (/home/tom/nodebb/node_modules/mongodb-core/lib/connection/pool.js:429:16)
at Connection.messageHandler (/home/tom/nodebb/node_modules/mongodb-core/lib/connection/pool.js:463:5)
at Socket.<anonymous> (/home/tom/nodebb/node_modules/mongodb-core/lib/connection/connection.js:317:22)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at readableAddChunk (_stream_readable.js:176:18)
at Socket.Readable.push (_stream_readable.js:134:10)
at TCP.onread (net.js:548:20)
tom@ama:~/nodebb$

ok here goes : )

So, following link text

Digital Ocean
Ubuntu 16.4
node -v = v6.9.5
npm -v = 3.10.10

First problem...

tom@ama:~$ mongo
MongoDB shell version: 3.2.12
connecting to: test
Server has startup warnings:
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten]
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten]
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-02-19T10:36:01.171+0000 I CONTROL [initandlisten]