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Re: Too many open files?
After more research, I discovered that the actual cause of the problem
is indeed a file descriptor leak: not in slapd, but in krb524d -- the
Kerberos V to IV ticket conversion service -- which is part of the
krb5-kdc package in Debian. It occurs when Kerberos is configured to
use LDAP as its back-end database.
I filed a Debian bug report, only to learn that it was a known problem
that will likely not be fixed, since krb524d has been removed from
current krb5 releases. I was also told that there seems to be a
related, much slower leak when using krb5-kdc with LDAP, but
thankfully that one is more likely to be fixed.