Introduction
As /usr/local/nagios/etc/nsca.cfg is replaced by the default config if opsview has been restarted the reference to this file that resides in /etc/init.d/opsview was changed to /usr/local/nagios/etc/nsca_puppet.cfg and the latter is deployed using a Puppet ERB template.
Aim
The aim is to send passive checks using nsca to Opsview.
The hypothesis was that executing:
echo -e "HOST\tService\t0\tRemote File does not exist" | \
sudo /usr/local/nagios/bin/send_nsca -H host -c \
/usr/local/nagios/etc/send_nsca.cfg
would update the (passive) check that reside in Opsview.
Result
Tailing the /var/log/messages indicates the following:
Jan 24 14:27:37 host nsca[X]:
Handling the connection for <ip>...
Jan 24 14:27:37 host nsca[X]:
Command file '/usr/local/nagios/var/rw/nagios.cmd#015'
does not exist, attempting to use alternate dump file
'/dev/null' for output
Jan 24 14:27:37 host nsca[X]:
SERVICE CHECK -> Host Name: 'HOST', Service Description:
'Service', Return Code: '0', Output: 'Remote File does
not exist' client <ip>
Jan 24 14:27:37 host nsca[X]: End of connection for <ip>...
Attempts to solve the issue
1) Perhaps the nsca command should be issued as the nagios user
sudo -u nagios /usr/local/nagios/bin/send_nsca
Does not solve the issue
2) does ncsa run?
Yes
user@host:~$ ps -ef | grep nsca
nagios PID 1 0 13:38 ? 00:00:00
/usr/local/nagios/bin/nsca -c
/usr/local/nagios/etc/nsca.cfg --single
3) does it work to send ncsa commands from localhost
No, does not work either
4) Incorrect permissions nagios.cmd?
Seems to be ok
user@host:~$ ls -ltr /usr/local/nagios/var/rw/
total 4
-rw-rw-r--. 1 nagios nagios 1321 Jan 23 22:13 config_output.last_okay
srw-rw----. 1 nagios nagcmd 0 Jan 24 13:38 nagios.qh
prw-rw----. 1 nagios nagcmd 0 Jan 24 13:38 nagios.cmd
srw-rw----. 1 nagios nagcmd 0 Jan 24 13:38 opsviewd.cmd
5) Does it work to send other checks then the passive ones to Opsview using nsca
The issue occurs for all kind of checks
6) nagios.cmd#015 does not exist...? nagios.cmd was configured? Or not?
Yes this is correct
7) related bugs to this version of NSCA?
user@host:~$ sudo /usr/local/nagios/bin/nsca --version
NSCA - Nagios Service Check Acceptor
Copyright (c) 2000-2007 Ethan Galstad (www.nagios.org)
Version: 2.7.2
Last Modified: 07-03-2007
License: GPL v2
Encryption Routines: AVAILABLE
Seems to be ok as no issues were found on the internet.
8) Who is allowed to write to nagios.cmd?
User is not allowed to write:
user@host:~$ echo hello >> /usr/local/nagios/var/rw/nagios.cmd
-bash: /usr/local/nagios/var/rw/nagios.cmd: Permission denied
while nagios is:
user@host:~$ sudo su - nagios
nagios@host:~$ echo hello >> /usr/local/nagios/var/rw/nagios.cmd
nagios@host:~$
/usr/local/nagios/etc/nsca.cfg
command_file=/usr/local/nagios/var/rw/nagios.cmd
Questions
Several questions could be asked but the assumption at the moment is that the checks could not be processed as these are not written to nagios.cmd.
- Where does the
#015come from?
