SQD_DEBUG, SQD_TRACE or SQD_INFO - see Environment Variables.
To inspect and follow the squid logs from all the squid services, use sqd logs:
-fto follow the logs-cfilters by container:processor,api,query-node,db-migrate, ordb-lallows filtering by the severity-pnumber of lines to fetch (default:100)--sincesets the time range (default:1d), such as1d,10h, or30m--searchfilters by message content