Fwd: Segmentation Fault with NDOUtils

[Daniel Gomes]

Hey all,

for anyone who might me thinking about answering, I solved the issue. 
Turns out I'd forgotten this was a 64 buts machine, and even though I 
set "--with-mysql-lib" which solved the issues to many other users, I 
sued /usr/lib/mysql instead of /usr/lib64/mysql. Using this second 
choice solved the segmentation faults!

Thanks anyway,

-------- Mensagem Original --------
Assunto: 	Segmentation Fault with NDOUtils
Data: 	Wed, 14 Apr 2010 18:26:39 +0100
De: 	Daniel Gomes <dgomes at ipfn.ist.utl.pt>
Para: 	nagios-users at lists.sourceforge.net



Dear list members,

I've been trying to get NDOutils to work so I can use a MySQL backend
(and later Centreon, but that's a different story). Before I forget,
this is a Ubuntu Hardy (8.04.4) running Nagios 3.2.1, Nagios Plugins
1.4.14 and NDOUtils 1.4b9.

I am installing everything from the source files, with explations
provided on some tutorials I found. The basic Nagios installation is
working fine, I can access the Web GUI and view the stats for my local
machine.

After having this setup, I moved on to trying to get NDOUtils to work.
After some troubles trying to find the MySQL libs etc, I tried with the
default configuration, UNIX sockets, which yielded some problems. So I
then tried TCP sockets, which is the current configuration.

So, as for ndo2db.cfg (the MySQL data is all tested - I manually
connected with the said user and was able to insert and delete rows into
a nagios_* table):

# grep -v '^#' ndo2db.cfg | grep -v '^$'
lock_file=/usr/local/nagios/var/ndo2db.lock
ndo2db_user=nagios
ndo2db_group=nagios
socket_type=tcp
socket_name=/usr/local/nagios/var/ndo.sock
tcp_port=5668
use_ssl=0
db_servertype=mysql
db_host=XXX
db_port=3306
db_name=nagiosdb
db_prefix=nagios_
db_user=nagios
db_pass=XXX
max_timedevents_age=1440
max_systemcommands_age=10080
max_servicechecks_age=10080
max_hostchecks_age=10080
max_eventhandlers_age=44640
max_externalcommands_age=44640
debug_level=-1
debug_verbosity=2
debug_file=/var/log/ndo2db.debug
max_debug_file_size=1000000

------------------------------

(and by the way, like some other people I found on other pages, I can't
get any info to show up on /var/log/ndo2db.debug)

I am able to start ndo2sql (I'm using a custom script I found on some
tutorial, I can post it if you'd like) and the proof that all is working is:

# netstat -plane | grep 5668
tcp        0      0 0.0.0.0:5668            0.0.0.0:*
LISTEN      1012       1231363     32676/ndo2db

As I mentioned, nothing (good or bad) gets written to the debug file.

------------------------------

On to nagios.cfg (I guess these are the only important fields):

# grep -v "#" nagios.cfg  | grep broker
event_broker_options=-1
broker_module=/usr/local/nagios/bin/ndomod.o
config_file=/usr/local/nagios/etc/ndomod.cfg

And finally ndomod.cfg:

# grep -v '^#' /usr/local/nagios/etc/ndomod.cfg | grep -v '^$'
instance_name=default
output_type=tcpsocket
output=127.0.0.1
tcp_port=5668
use_ssl=0
output_buffer_items=5000
buffer_file=/usr/local/nagios/var/ndomod.tmp
file_rotation_interval=14400
file_rotation_timeout=60
reconnect_interval=15
reconnect_warning_interval=15
data_processing_options=-1
config_output_options=2

Starting nagios just says "done" without errors/warnings, but checking
the logs (/var/log/nagios.log):

[1271265751] Nagios 3.2.1 starting... (PID=520)
[1271265751] Local time is Wed Apr 14 18:22:31 WEST 2010
[1271265751] LOG VERSION: 2.0
[1271265751] ndomod: NDOMOD 1.4b9 (10-27-2009) Copyright (c) 2009 Nagios
Core Development Team and Community Contributors
[1271265751] ndomod: Successfully connected to data sink.  54 queued
items to flush.
[1271265751] ndomod: Successfully flushed 54 queued items to data sink.
[1271265751] Event broker module '/usr/local/nagios/bin/ndomod.o'
initialized successfully.
[1271265751] Finished daemonizing... (New PID=522)
[1271265752] ndomod: Error writing to data sink!  Some output may get
lost...
[1271265752] ndomod: Please check remote ndo2db log, database connection
or SSL Parameters
[1271265768] ndomod: Successfully reconnected to data sink!  0 items
lost, 86 queued items to flush.
[1271265768] ndomod: Successfully flushed 86 queued items to data sink.
[1271265768] ndomod: Error writing to data sink!  Some output may get
lost...
[1271265768] ndomod: Please check remote ndo2db log, database connection
or SSL Parameters
[1271265784] ndomod: Successfully reconnected to data sink!  0 items
lost, 82 queued items to flush.
[1271265784] ndomod: Successfully flushed 82 queued items to data sink.
[1271265784] ndomod: Error writing to data sink!  Some output may get
lost...
[1271265784] ndomod: Please check remote ndo2db log, database connection
or SSL Parameters
[1271265800] ndomod: Successfully reconnected to data sink!  0 items
lost, 85 queued items to flush.
[1271265800] ndomod: Successfully flushed 85 queued items to data sink.
[1271265800] ndomod: Error writing to data sink!  Some output may get
lost...
[1271265800] ndomod: Please check remote ndo2db log, database connection
or SSL Parameters

Still nothing on the ndo2db debug log, and checking the syslog:

Apr 14 18:22:31 silver nagios: Event broker module
'/usr/local/nagios/bin/ndomod.o' initialized successfully.
Apr 14 18:22:31 silver nagios: Finished daemonizing... (New PID=522)
Apr 14 18:22:31 silver kernel: [694704.043377] ndo2db[521]: segfault at
7fff1da10ff8 rip 7f9615464696 rsp 7fff1da11000 error 6
Apr 14 18:22:32 silver nagios: ndomod: Error writing to data sink!  Some
output may get lost...
Apr 14 18:22:32 silver nagios: ndomod: Please check remote ndo2db log,
database connection or SSL Parameters
Apr 14 18:22:48 silver kernel: [694720.308001] ndo2db[535]: segfault at
7fff1da10ff8 rip 7f9615464696 rsp 7fff1da11000 error 6
Apr 14 18:22:48 silver nagios: ndomod: Successfully reconnected to data
sink!  0 items lost, 86 queued items to flush.
Apr 14 18:22:48 silver nagios: ndomod: Successfully flushed 86 queued
items to data sink.
Apr 14 18:22:48 silver nagios: ndomod: Error writing to data sink!  Some
output may get lost...
Apr 14 18:22:48 silver nagios: ndomod: Please check remote ndo2db log,
database connection or SSL Parameters


And so on, with several more segfaults...
If it helps for anything, setting the output_type for file seems to work
well, with the file getting written. Can ndo2db read this file? For me
it really doesn't matter which type of output I use, so long as it works...

Thanks in advance,

-- 
Daniel Gomes (SysAdmin)
dgomes at ipfn.ist.utl.pt
Ext. 3487 - 218419487

Instituto de Plasmas e Fusão Nuclear
Instituto Superior Técnico - UTL
Av. Rovisco Pais - 1049-001 Lisboa - Portugal



-- 
Daniel Gomes (SysAdmin)
dgomes at ipfn.ist.utl.pt
Ext. 3487 - 218419487

Instituto de Plasmas e Fusão Nuclear
Instituto Superior Técnico - UTL
Av. Rovisco Pais - 1049-001 Lisboa - Portugal

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