I get this in the logs for every database open by pg_autovacuum:
Sep 1 14:02:45 cerberus pg_autovacuum: nss_ldap: could not connect to
any LDAP server as (null) - Can't contact LDAP server
This is produced by the bind_to() call in libnss-ldap. This is invoked
when /etc/nss_switch.conf specifies ldap; what I don't understand yet is
what pg_autovacuum is doing differently from every other application so
as to cause this message.
Oliver Elphick