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

This is because as of now Mongo DB for Ubuntu 18.04 is only available as a development version (See: MongoDB Distros).

I just installed it by doing the following:

Add the corresponding signature:

    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4B7C549A058F8B6B  

Add the supported version:

echo "deb [arch=amd64] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/development multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list

Update:

    sudo apt update

Install:

sudo apt install mongodb-org-unstable

If you get a "GPG error" repeat step 1 with the key that is shown in the error message. You might be able to install via

sudo apt install mongodb

but according to MongoDB this is not supported and will most probably not install the newest version.