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Re: slapd stopping with no error message

Douglas B. Jones wrote: 
About three times in the last several days, ldap-2.3.33 (RHEL4) has just stopped.
No core or error messages in the log files. The last entry in the log file
is just a search entry, with nothing common in the search from 'crash' to
'crash'. I have even tried the searches and they worked fine. I restart it
notes an unclean shutdown detected and attempts recovery and appears to do so.

My question is what is the proper way to debug this. If I do -d, it will
not fork, but since it fails at random times I probably will not be there
to see the output.


Unix has this cool thing called I/O redirection, perhaps you've heard of it?
There's also this other cool thing called job control...

In [t]csh I would use
	slapd -d 7 >& Errs &
In sh I would use
	nohup slapd -d 7 > Errs 2>&1 &

And if any of that looks unfamiliar to you, then you Really Really need to go read Kernighan & Pike's _The_Unix_Programming_Environment_ before you do anything else.

Is this the best way to try to see what is happening?
If so, what is the recommended debug level? It was built with:

./configure \
        --prefix=/usr/local/openldap-2.3.33 \
        --includedir=/usr/local/lib/BerkleyDB.4.5.20.NC/include \
        --enable-crypt \
        --enable-cleartext \
        --enable-debug \
        --enable-meta=yes \
        --enable-monitor=yes \
        --enable-relay=yes \
        --enable-ldap=yes \
        --enable-rewrite=yes \
        --enable-overlays=yes \
        -exec-prefix=/usr/local/openldap-2.3.33

I see that there is 2.3.34 out and that it can use BDB 4.5. Is the
best course of action to upgrade?

All OpenLDAP 2.3.x releases work with BDB 4.5 (and 4.6, for that matter). The explicit test in configure is just a formality. (If the configure test didn't find a specific BDB version that it recognized, it would eventually fallback to -ldb4 which would work anyway.)
--
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc
Chief Architect, OpenLDAP http://www.openldap.org/project/