Message 2017-08-07 15:59:18.493 +0430 [14800] FATAL: private key file "/etc/ssl/private/ssl-cert-snakeoil.key" has group or worl…

2017-08-07 15:59:18.493 +0430 [14800] FATAL: private key file "/etc/ssl/private/ssl-cert-snakeoil.key" has group or world access 2017-08-07 15:59:18.493 +0430 [14800] DETAIL: File must have permissions u=rw (0600) or less if owned by the database user, or permissions u=rw,g=r (0640) or less if owned by root. 2017-08-07 15:59:18.493 +0430 [14800] LOG: database system is shut down 2017-08-07 16:02:17.935 +0430 [15161] FATAL: private key file "/etc/ssl/private/ssl-cert-snakeoil.key" has group or world access 2017-08-07 16:02:17.935 +0430 [15161] DETAIL: File must have permissions u=rw (0600) or less if owned by the database user, or permissions u=rw,g=r (0640) or less if owned by root. 2017-08-07 16:02:17.935 +0430 [15161] LOG: database system is shut down 2017-08-07 16:09:13.831 +0430 [15278] FATAL: private key file "/etc/ssl/private/ssl-cert-snakeoil.key" has group or world access 2017-08-07 16:09:13.831 +0430 [15278] DETAIL: File must have permissions u=rw (0600) or less if owned by the database user, or permissions u=rw,g=r (0640) or less if owned by root. 2017-08-07 16:09:13.832 +0430 [15278] LOG: database system is shut down این لاگ فایل postgresهست مشکلش چیه