Error initializing listener of type tcp: listen tcp 127.0.0.1:8200: bind: address already in use

What is problem?

The error message indicates that you have already used this port and the server can’t run another server in same port.

What should we do to fix already in use issue for vault?

sudo netstat -tulpn

Type in terminal and check printed list.

In printed list, each running process has pin. Thanks to this pins, we can kill any process.

kill 1806

When we typed, selected process will be killed.