@michalmuskala and @OvermindDL1: thanks, how to change it to listen on port? I saw port configuration in postgresql.conf, but uncommenting it not and restarting not works.
psql -h localhost -U postgres
psql: FATAL: Ident authentication failed for user “postgres”
Looks like unix sockets are turn on by default with localhost configuration, but this is required by ecto:
https://github.com/elixir-ecto/ecto/issues/1207#issuecomment-172570064
Note: this configuration now works:
local all all md5
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 ident
but is md5 safe?


















