@phenomlab My password consists of upper case letters, numbers and lower case letters.

@phenomlab
Of course I had created it.

@PitaJ said in MongoServerError: Authentication failed.:

sudo systemctl status mongod

napishtim@napishtim-M14xR1:~$ sudo systemctl status mongod
[sudo] napishtim 的密码： 
● mongod.service - MongoDB Database Server
     Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-06-04 16:59:21 CST; 20h ago
       Docs: https://docs.mongodb.org/manual
   Main PID: 76231 (mongod)
     Memory: 150.1M
     CGroup: /system.slice/mongod.service
             └─76231 /usr/bin/mongod --config /etc/mongod.conf

6月 04 16:59:21 napishtim-M14xR1 systemd[1]: Started MongoDB Database Server.

I had repaired securing MongoDB. But I can not verify the administrative user created earlier can connect

napishtim@napishtim-M14xR1:~$ mongo -u admin -p （myadminpassword） --authenticationDatabase=admin
MongoDB shell version v5.0.8
connecting to: mongodb://127.0.0.1:27017/?authSource=admin&compressors=disabled&gssapiServiceName=mongodb
Error: Authentication failed. :
connect@src/mongo/shell/mongo.js:372:17
@(connect):2:6
exception: connect failed
exiting with code 1

@phenomlab

mongo -u admin -p myadminpassoword --authenticationDatabase=admin
MongoDB shell version v5.0.8
connecting to: mongodb://127.0.0.1:27017/?authSource=admin&compressors=disabled&gssapiServiceName=mongodb
Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused :
connect@src/mongo/shell/mongo.js:372:17
@(connect):2:6
exception: connect failed
exiting with code 1

napishtim@napishtim-M14xR1:~/nodebb$ ./nodebb start
2022-06-04T08:29:59.510Z [74573] - info: Launching web installer on port 4567
2022-06-04T08:30:24.079Z [74573] - info: Web installer listening on http://0.0.0.0:4567
2022-06-04T08:31:01.964Z [74573] - info: Starting setup process
2022-06-04T08:31:04.300Z [74701] - info: NodeBB Setup Triggered via Command Line

Welcome to NodeBB v2.0.0!

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).
2022-06-04T08:31:04.322Z [74701] - info: [install/checkSetupFlagEnv] checking env vars for setup info...
2022-06-04T08:31:04.660Z [74701] - info: 
Now configuring mongo database:
2022-06-04T08:31:35.307Z [74701] - warn: NodeBB Setup Aborted.
 MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
    at Timeout._onTimeout (/home/napishtim/nodebb/node_modules/mongodb/lib/sdam/topology.js:318:38)
    at listOnTimeout (node:internal/timers:559:17)
    at processTimers (node:internal/timers:502:7)

It causes Connection refused. How can I do for these?

@phenomlab said in MongoServerError: Authentication failed.:

Did you complete steps in terms of setting up and securing MongoDB as per the documentation ?

You mean I need type:

sudo vim /etc/mongod.conf

Then

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
  dbPath: /var/lib/mongodb
  journal:
    enabled: true
#  engine:
#  wiredTiger:

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1


# how the process runs
processManagement:
  timeZoneInfo: /usr/share/zoneinfo

#security:
  authorization: enabled
#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

Is these right?

napishtim@napishtim-M14xR1:~/nodebb$ ./nodebb start
2022-06-01T07:14:30.498Z [137319] - info: Launching web installer on port 4567
2022-06-01T07:14:54.965Z [137319] - info: Web installer listening on http://0.0.0.0:4567
2022-06-01T07:15:16.757Z [137319] - info: Starting setup process
2022-06-01T07:15:19.081Z [137495] - info: NodeBB Setup Triggered via Command Line

Welcome to NodeBB v2.0.0!

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).
2022-06-01T07:15:19.095Z [137495] - info: [install/checkSetupFlagEnv] checking env vars for setup info...
2022-06-01T07:15:19.451Z [137495] - info: 
Now configuring mongo database:
2022-06-01T07:15:20.181Z [137495] - warn: NodeBB Setup Aborted.
 MongoServerError: Authentication failed.
    at Connection.onMessage (/home/napishtim/nodebb/node_modules/mongodb/lib/cmap/connection.js:203:30)
    at MessageStream.<anonymous> (/home/napishtim/nodebb/node_modules/mongodb/lib/cmap/connection.js:63:60)
    at MessageStream.emit (node:events:527:28)
    at processIncomingData (/home/napishtim/nodebb/node_modules/mongodb/lib/cmap/message_stream.js:108:16)
    at MessageStream._write (/home/napishtim/nodebb/node_modules/mongodb/lib/cmap/message_stream.js:28:9)
    at writeOrBuffer (node:internal/streams/writable:389:12)
    at _write (node:internal/streams/writable:330:10)
    at MessageStream.Writable.write (node:internal/streams/writable:334:10)
    at Socket.ondata (node:internal/streams/readable:754:22)
    at Socket.emit (node:events:527:28)

![error.jpg](/assets/uploads/files/1654069855850-error.jpg) 

It is something wrong with MongoDB. How can I install nodebb?