=?utf-8?q?PG_Bug_reporting_form?= <noreply(at)postgresql(dot)org> writes:
> Starting PostgreSQL 9.6 database server: mainThe PostgreSQL server failed to
> start. Please check the log output: 2018-09-07 16:49:56.926 EDT [3990]
> FATAL: could not access private key file
> "/etc/ssl/private/ssl-cert-snakeoil.key": Permission denied 2018-09-07
Did you check permissions on the directories leading to
ssl-cert-snakeoil.key? The fact that you had to use sudo to list
that directory is, shall we say, suspicious.
regards, tom lane