Exporter does not reconnect to database if docker-daemon has restarted

[Nikolay-Ch]

What did you do?
sudo systemctl restart docker

What did you expect to see?
In logs i see infinite messages: "Error opening connection to database...". And Prometheus say in their logs: "connection refused"

What did you see instead? Under which circumstances?
Exporter restarts connection to database and exports metrics. Or... metrics to Prometheus server continue to send.

Environment
Ubuntu 24.04

• PostgreSQL version:
  17

• Logs:

ts=2024-11-05T20:26:24.749Z caller=postgres_exporter.go:682 level=error err="Error opening connection to database (postgresql://prometheus:PASSWORD_REMOVED@xxx.yyy.zzz.yyy:5432/postgres?sslmode=disable): pq: no pg_hba.conf entry for host \"aaa.bbb.ccc.ddd\", user \"user\", database \"postgres\", no encryption"