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Configuring Nagios to check a HTTP host

Nagios is an elaborate piece of software to monitor hosts and services. I will explain a bit how you can configure nagios to monitor an HTTP service. I’m assuming your nagios setup already has the...

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Configuring nagios checks over SSH

I had to do a lot of fiddling before I got nagios over ssh working. I used this article as source, mostly, even though I did it differently. First add some commands to commands.cfg: define command{...

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Checking 3ware raid controllers over ssh with nagios

First check this to see how you enable a host to be checked with nagios over SSH. Create a command in /etc/nagios3/commands.cfg: # This command needs this in /etc/sudoers on the target: # nagios ALL =...

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Allowing apache to set Nagios cmd file

On debian, to prevent: Error: Could not stat() command file ‘/var/lib/nagios3/rw/nagios.cmd’! Do: /etc/init.d/nagios3 stop dpkg-statoverride --update --add nagios www-data 2710 /var/lib/nagios3/rw...

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Useful extra Nagios commands

Here are some useful extra nagios commands I often use: define command{ command_name notify-host-by-sms command_line /usr/local/sbin/send-sms.sh -n $CONTACTPAGER$ -m "$HOSTNAME$: $HOSTSTATE$" }...

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Better nagios SMS and E-mail messages

Just for my references. I made changes to it before, but I now added the comments to them (for custom notifications and acknowledgements): define command{ command_name notify-host-by-email command_line...

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