I got an alert that render was filling up my log provider. When I looked, I saw a constant stream of messages like this, repeating every ~10 seconds:
17:53:57 [64e4f635.278d84-1] user=[unknown],db=[unknown],app=[unknown],client=::1,LOG: connection received: host=::1 port=44770 17:53:58 [64e4f635.278d84-2] user=postgres,db=postgres,app=[unknown],client=::1,LOG: connection authenticated: identity="postgres" method=md5 (/pgdata/dpg-cis0jftph6et1scogogg-a/pg_hba.conf:90) 17:53:58 [64e4f635.278d84-3] user=postgres,db=postgres,app=[unknown],client=::1,LOG: connection authorized: user=postgres database=postgres application_name=psql SSL enabled (protocol=TLSv1.2, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256) 17:53:58 [64e4f635.278d84-4] user=postgres,db=postgres,app=psql,client=::1,LOG: disconnection: session time: 0:00:00.097 user=postgres database=postgres host=::1 port=44770
I thought this might be a health check, but the ports are mostly unique. Over a ~6 hour window, I saw ~2K unique ports, which is really weird for a health check.
I also found this thread, which indicated they were seeing health checks, but the logs are little different.
Can anyone confirm these are just health checks, despite the varying ports?