How can I install MySQL Workbench on Ubuntu 20.04 LTS?

MySQL has updated their repository for Focal Fossa and removed the repository for Eoan Ermine. To install MySQL Workbench on 20.04, either download the Workbench for 20.04 from MySQL archives or follow the alternate method mentioned below replacing eoan with focal.

Historical answer:

You can download the deb package for Eoan Ermine from MySQL archives and install that using:

sudo apt install ./mysql-workbench-community_8.0.19-1ubuntu19.10_amd64.deb

The dependencies of MySQL Workbench for 19.10 are satisfiable on 20.04. APT will ensure installation of the dependencies as well.

Alternatively, you can use MySQL's repository for 19.10 (Eoan Ermine) to get latest updates as soon as pushed in Eoan's repository or until MySQL starts supporting Focal Fossa. To add that:

• Create a new file for MySQL repository:

  echo "deb http://repo.mysql.com/apt/ubuntu/ eoan mysql-tools" | sudo tee /etc/apt/sources.list.d/mysql.list
  

  and run

  sudo apt update
  

• You'll get an error, like

  Err:1 http://repo.mysql.com/apt/ubuntu eoan InRelease                        
    The following signatures couldn't be verified because the public key is not available: NO_PUBKEY <some key value>
  

• Add this key using

  sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <key value>
  

• Update and install MySQL

  sudo apt update
  sudo apt install mysql-workbench-community
  

For anyone that comes here like I did by starting with a google search instead of going directly to the MySQL download page, there is a download explicitly for Ubuntu 20.04 on their downloads page:

https://dev.mysql.com/downloads/workbench/