Hi, I have a bunch of long-standing struggles with the way Ceph handles logging and I cannot figured out how to solve them. These issues are basically the following: - The log config options are utterly confusing and very badly documented - Mon file logs are spammed with DBG-level cluster logs, no matter what I configure - syslog/journald gets only part of the messages, but file logs must be turned off due to the spam above - "audit" channel logs cannot be configured at all From this, my following needs and questions arise, perhaps you can help: - I want to receive cluster and audit logs on the MONs with level "warn" or at most "info" - I want everything to go to journald - Where to cluster logs go if "clog_to_monitors" is off? - What's the difference between the "mon_cluster_log_*" and "clog_*" settings? - What the hell does "mon_cluster_log_to_syslog_facility" do and what does "audit=local0" mean or do? A very annoying symptom of the wonky logging config is that I cannot debug the infamous "LARGE_OMAP_OBJECTS" warning. It says "Search the cluster log for 'Large omap object found' for more details.", but I cannot do that, because without enabling the file-logging flood gates, I never receive the required cluster log info at the monitors and there seems to be no other way to debug this than to grep the cluster log (why??). My current log config is the following: global advanced clog_to_monitors true global basic err_to_syslog true global basic log_to_file false global basic log_to_stderr false global basic log_to_syslog true mon advanced mon_cluster_log_file /dev/null mon advanced mon_cluster_log_to_file false mon advanced mon_cluster_log_to_stderr false mon advanced mon_cluster_log_to_syslog true mon advanced mon_cluster_log_to_syslog_facility daemon mon advanced mon_cluster_log_to_syslog_level warn Any help solving this conundrum is much appreciated. Thanks! Janek