Error in log parser #1295
Description
Monitoring the server_log_event_counts for any of the current PostgreSQL Docker images gives the following error repeatedly:
2026-03-10 16:32:24.378 [ERROR] [source:demo] [metric:server_log_event_counts] [sql:select name from pg_ls_logdir() limit 1] [args:[]] [err:ERROR: could not open directory "log": No such file or directory (SQLSTATE 58P01)] [pid:873] [time:633.683µs] Query
2026-03-10 16:32:24.378 [ERROR] [source:demo] [metric:server_log_event_counts] [error:ERROR: could not open directory "log": No such file or directory (SQLSTATE 58P01)] Could't parse logs remotely. lacking required privileges
2026-03-10 16:32:24.378 [ERROR] [source:demo] [metric:server_log_event_counts] [error:ERROR: could not open directory "log": No such file or directory (SQLSTATE 58P01)] Error parsing logs
That's because logging configs are not configured properly in the images.
Also, we probably should validate logging_collector and log_destination on NewLogParser instantiation, to return a more meaningful error.