Postgres.app Could not start on port 5432

Question

I\'m using http://postgresapp.com. In the menubar it gives the error \" Could not start on port 5432.\" Similarly if I try to start the server from the terminal, I get:

Answer 1

This command is a one-liner that instantly kills all PostgresSQL processes.

sudo kill -kill $(sudo lsof -t -i :5432)

This fixed all my problems on Mac OSX Mojave 10.14.1.