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check_daemontools_service
Installation
Download the plugin:
cd /usr/local/nagios/libexec
wget http://www.productionmonkeys.net/sites/productionmonkeys.net/files/nagios/check_daemontools_service
chmod ugo+x check_daemontools_service
chown nagios:nagios check_daemontools_serviceThe latest version fo the plugin requires the Nagios::Plugin::Getopt and Nagios::Plugin::Functions modules for Perl be installed:
perl -MCPAN -e shell
install Nagios::Plugin::Getopt
install Nagios::Plugin::Functions
exitThe check command takes the syntax of
check_daemontools_service -s <service> [-c <crit_secs>] [-w <warn_secs>][-v]. The warning and critical times can be adjusted to your preference. Given that if a daemontools service will have a run time of less than 2 seconds if it hasn't started, the critical time can be set quite low. Edit /usr/local/nagios/etc/nrpe.cfg and add entries for the services you want to check, such as:
command[check_daemon_smtp]=/usr/local/nagios/libexec/check_daemontools_service -s /service/smtp -w 15 -c 5Restart NRPE must be run as the Nagios Server Configuration Troubleshooting
Non-root access to svstat
<code>svstatroot user in order to check service status. Edit /etc/sudoers and add an entries for the Nagios user:nagios ALL=(ALL) NOPASSWD:/usr/local/bin/svstat
nagios ALL=(ALL) NOPASSWD:/usr/local/nagios/libexec/check_daemontools_service
Since you should have figured out how to install a Nagios server in the first place, I'm not going to provide you with instructions on how to configure a host or service entry for your mail server other than the syntax for the service check_command would be check_nrpe!check_daemon_smtp
My latest install of this had difficulty locating the svstat executable. I ended up creating a symbolic link to it in /usr/bin:ln -s /usr/local/bin/svstat /usr/bin/svstat
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