I shouted from the rooftops. The slapd made some big mistake and the nagios plugin said: "Could not search/find objectclasses in dc=domain,dc=tld"
I stopped the slapd, then started and tried to run slapcat: bdb_db_open: unclean shutdown detected; attempting recovery. bdb_db_open: Recovery skipped in read-only mode. Run manual recovery if errors are encountered. bdb_db_open: alock_recover failed bdb_db_close: alock_close failed backend_startup_one: bi_db_open failed! (-1) slap_startup failed Segmentation fault. I have no db_stat :( # locate db_stat /usr/share/mysql/mysql-test/r/have_ndb_status_ok.require I guess that the failure occurs when the master slapd make some update to the slave... :(
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