Trying to setup nagios 3.1 with ndo2db on a 64bits platform, ndo2bd may not work properly and crash over and over.

The symptoms are:

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[1286679019] ndomod: Still unable to connect to data sink.  7575 items lost, 5000 queued items to flush.

in the nagios log file and /var/log/messages containing reports of ndo2db segfaults …

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Oct 10 12:52:26 ip-10-112-41-174 kernel: ndo2db[15666]: segfault at 00007fff8701cff8 rip 00002aaaabf2d211 rsp 00007fff8701d000 error 6

Apparently, this comes from ndo2db being improperly linked to a 32bits version of the mysql client lib.

You need to configure ndo2db like this :

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./configure --prefix=/opt/nagios --enable-mysql --disable-pgsql --with-ndo2db-user=nagios --with-ndo2db-group=nagios --with-mysql-lib=/usr/lib/mysql

then you can go on and install ndo2db as documented, nagios will happily log events into you supervision database