AWS RDS
There is a maximum of 30 database per instance and 4 TB on each instance, so if your application depends on an architecture where you need to have 100 databases in the same instance then this is a showstopper for RDS.
Postgresql Hacked ? - FATAL: pg_hba.conf rejects connection for host "127.0.0.1", user "postgres", database "", SSL on
Two Main Reason : One (Might Not Be Hacked) : Just change Config it will work as given in this link https://dba.stackexchange.com/questions/83984/connect-to-postgresql-server-fatal-no-pg-hba-conf-entry-for-host Second (Might Be Hacked) Oney way to find that is list users and check postgres=# \du It will list users. If you find " pgdbadm " user good chance your PostgreSQL got hacked One main thing they mainly do is they will add these two rules in begining of the pg_hba.conf file Hack Code host all postgres 0.0.0.0/0 reject host all pgdbadm 0.0.0.0/0 md5 For more info check the below links https://gist.github.com/andywer/1c7aaa23e758f555b483e171c51514e7 https://dba.stackexchange.com/questions/215294/why-does-pg-hba-conf-sometimes-have-random-rules-added-to-it-postgresql https://stackoverflow.com/questions/52197486/fatal-pg-hba-conf-rejects-connection-for-host-127-0-0-1-user-postgres-dat
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