Mongodb not working on Ubuntu 16.04

Question

I installed mongodb following this tutorial here, no errors during the installation but when I try to start the mongod server using this command sudo systemctl start m

Answer 1

I was getting the similar error, in my case mongo couldn't use 27017. I needed to stop whatever was using 27017 port and restart mongo.

Answer 2

In my case the system was not able to to find mongod.service Running the following command will fixed it

sudo systemct1 enable mongod

then restart the database by

sudo service mongod restart

Answer 3

Step1. sudo systemctl stop mongodb

Step2. sudo systemctl start mongod

Step3. sudo systemctl status mongod

I hope it helps you

Answer 4

The first thing, you should examine the mongo log. It should tell you what went wrong.

$ tail -n 100 /var/log/mongodb/mongod.log

This command will show last 100 lines of the log file which will point you to the exact problem.

For example, mine wasn't working because i was running a mongo instance using the same port 27017. when i ran another instance, the instance failed to load.

LOG

2018-05-11T19:03:49.102-0400 I CONTROL  [initandlisten] MongoDB starting : pid=1247 port=27017 dbpath=/var/lib/mongodb 64-bit host=dev-hyuen
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] db version v3.2.20
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] git version: a7a144f40b70bfe290906eb33ff2714933544af8
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] allocator: tcmalloc
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] modules: none
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] build environment:
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten]     distmod: ubuntu1604
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten]     distarch: x86_64
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten]     target_arch: x86_64
2018-05-11T19:03:49.103-0400 I CONTROL  [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log", quiet: true } }
2018-05-11T19:03:49.124-0400 E NETWORK  [initandlisten] listen(): bind() failed errno:98 Address already in use for socket: 127.0.0.1:27017
2018-05-11T19:03:49.124-0400 E NETWORK  [initandlisten]   addr already in use
2018-05-11T19:03:49.124-0400 E STORAGE  [initandlisten] Failed to set up sockets during startup.
2018-05-11T19:03:49.124-0400 I CONTROL  [initandlisten] dbexit:  rc: 48

Answer 5

Stumbed on the same issue, just reboot

sudo reboot