Unable to install mongodb properly on ubuntu 18.04 LTS

Question

I am trying to install mongodb on my Ubuntu 18.04 LTS, but it has the following error saying

You might want to run \'apt --fix-broken install\' to correct

Answer 1

The easiest way to install MongoDB and use the mongod command on ubuntu 18.04.

1. Update the packages list.

    $ sudo apt update

2. Install the MongoDB.

    $ sudo apt install -y mongodb

3. Check the service's status.

    $ sudo systemctl status mongodb

3a. You should see

    ● mongodb.service - An object/document-oriented database
      Loaded: loaded (/lib/systemd/system/mongodb.service; enabled; vendor 
      preset:enabled)
      Active: active (running) since Sat 2019-03-11 10:45:01 UTC; 4min 13s ago
      Docs: man:mongod(1)
      Main PID: 2312 (mongod)
      Tasks: 23 (limit: 1153)
      CGroup: /system.slice/mongodb.service
            └─2312 /usr/bin/mongod --unixSocketPrefix=/run/mongodb --config
      /etc/mongodb.conf

4. To allow access to MongoDB on its default port 27017

     $ sudo ufw allow 27017

5. Check status

     $ sudo ufw status

5a. You should see

     Status: active
     To                         Action      From
     --                         ------      ----
     27017                      ALLOW       Anywhere
     27017 (v6)                 ALLOW       Anywhere (v6)

5b. If it returns inactive

     $ sudo ufw enable

     Output:
     Firewall is active and enabled on system startup.

6. Check the / directory to see if there is a data/db directory, if not:

     $ sudo mkdir -p /data/db

7. To run the mongod first you need stop mongodb:

     $ sudo systemctl stop mongodb

8. Finally, you can run the mongod:

     $ sudo mongod

I hope that I helped