Mar 15 16:05:01 ip-172-31-80-186 CRON[27296]: pam_unix(cron:session): session opened for user root by (uid=0)
Mar 15 16:05:01 ip-172-31-80-186 CRON[27297]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Mar 15 16:05:01 ip-172-31-80-186 CRON[27296]: pam_unix(cron:session): session closed for user root
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Stopped PostgreSQL RDBMS.
-- Subject: Unit postgresql.service has finished shutting down
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql.service has finished shutting down.
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Stopping PostgreSQL RDBMS...
-- Subject: Unit postgresql.service has begun shutting down
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql.service has begun shutting down.
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Starting PostgreSQL Cluster 10-main...
-- Subject: Unit postgresql@10-main.service has begun start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql@10-main.service has begun starting up.

Mar 15 16:05:07 ip-172-31-80-186 postgresql@10-main[27302]: Error: Config owner (postgres:111) and data owner (root:0) do not match, and config owner is not root
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: postgresql@10-main.service: Can't open PID file /var/run/postgresql/10-main.pid (yet?) after start: No such file or directory
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: postgresql@10-main.service: Failed with result 'protocol'.
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Failed to start PostgreSQL Cluster 10-main.
-- Subject: Unit postgresql@10-main.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql@10-main.service has failed.
--
-- The result is RESULT.
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Starting PostgreSQL RDBMS...
-- Subject: Unit postgresql.service has begun start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql.service has begun starting up.
Mar 15 16:05:07 ip-172-31-80-186 systemd[1]: Started PostgreSQL RDBMS.
-- Subject: Unit postgresql.service has finished start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit postgresql.service has finished starting up.
--
-- The start-up result is RESULT.
Mar 15 16:05:07 ip-172-31-80-186 snapd[8385]: udevmon.go:190: udev monitor observed remove event for unknown device "/sys/cred_jar(3044:postgresql.service)"