max_conns and max_conn_lifetime breaks db.Ping #464
Description
$ export DATABASE_URL="postgres://*:*@*:5432/auth?max_conn_lifetime=1m&max_conns=20&max_idle_conns=4"
$ ./hydra host --dangerous-force-http
INFO[0000] Connecting with postgres://*:*@*:5432/auth?max_conn_lifetime=1m&max_conns=20&max_idle_conns=4
ERRO[0000] An error occurred error="Could not connect to SQL: pq: unrecognized configuration parameter "max_idle_conns""
Investigating I discovered that it's this call that fails: https://github.com/ory/hydra/blob/master/config/backend_connections.go#L41
Unfortunately the custom parameters hydra uses to control the number of connections appear to break the connection since they're not recognized by the database library.
Not sure if this happens with all postgres databases. I tried with our production one and a docker one summoned with
docker run --rm --name postgres -e POSTGRES_PASSWORD=password -p 5432:5432 postgres -d 5