check_3ware_SSH

Project Notes

The original p_view=289 check_3ware">http://www.nagiosexchange.org/RAID_Controller.58.0.html?&tx_netnagext_pi1p_view=289 check_3ware Perl script works well but I didn't feel like installing nagios on the servers just for one service. Solution: modify the script to run the commands over SSH. This requires a little more setup on your part, though less than setting up nagios :).

Usage:
1) Download tw_cli from 3ware's website, install on remote host(s). Make sure you have the right version, might take a few tries to find it.

2) Create //nagios// user on remote host, with home directory.

3) On remote host, edit ///etc/sudoers//. Add the following line to allow nagios to execute tw_cli as root:
**{{nagios ALL=NOPASSWD: /usr/bin/tw_cli}}**

4) On local (monitoring) host, generate an authentication key:
**{{$ su - nagios}}**
**{{$ ssh-keygen}}**

5) Copy the authentication key to the remote host:
**{{$ scp /home/nagios/.ssh/id_rsa [email protected]:/home/nagios/.ssh/authorized_keys}}**

**- Note: above command assumes the //authorized_keys// file doesn't exist! If it does, you will want to append it.**

6) You can now run the script on a remote host as root with the nagios user on the local (monitoring) host:
**{{$ ./check_3ware -C 0 -U 0 -H 192.168.1.15 -u nagios}}**

7) Here's how it looks in //checkcommands.cfg//:
**{{$USER1$/check_3ware -C $ARG1$ -U $ARG2$ -H $HOSTADDRESS$ -u nagios}}**

**Q:** Why not use check_by_ssh?
**A:** I would rather have the script in one place rather than on all the servers. Makes maintenance easier.
**A:** I've had problems with check_by_ssh. Of course, that could be attributed to my stupidity ;)

**Q:** Do I need //both// scripts, one for local, the other for ssh?
**A:** No, to check local, just omit the {{-H}} and {{-u}} options.

- //ianar? s?vi//