I\'m installing MongoDB on an Ubuntu 14.04 machine, using the instructions at: https://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/
So I run:
I also faced this issue when installing MongoDB 4.0 on Ubuntu 16.04. So I did.
sudo rm /etc/apt/sources.list.d/mongodb*.list - remove any existing file for MongoDB
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv E52529D4 - add the key
sudo bash -c 'echo "deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.0 multiverse" > /etc/apt/sources.list.d/mongodb-org-4.0.list' - create a new MongoDB repository list file
Now, Complete the installation with an update of repositories then install MongoDB, enable the mongod service and start it up, and last, check your MongoDB version:
sudo apt update
sudo apt install mongodb-org
systemctl enable mongod.service
systemctl start mongod.service
mongo --version