Fix Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5432?

Most likely it's because your system shutdown unexpectedly Try

postgres -D /usr/local/var/postgres

You might see

FATAL:  lock file "postmaster.pid" already exists
HINT:  Is another postmaster (PID 449) running in data directory "/usr/local/var/postgres"?

Then try

kill -9 PID

example

kill -9 419 And it should start postgres normally

 
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