MongoDB Community Edition on Linux: Repository, service and access

MongoDB ties its repository, signing key and package version to the distribution and release. Inspect the host first, then choose the exact Ubuntu or Debian guide and a supported MongoDB release in the official installation overview.

cat /etc/os-release
dpkg --print-architecture

Import the current key and create the repository file shown in that guide. Only then install and start the official packages:

sudo apt-get update
sudo apt-get install -y mongodb-org
sudo systemctl enable --now mongod
sudo systemctl status mongod

Test locally with mongosh. Enable authentication and review the production notes before allowing network access; never expose an unsecured database publicly.