Custom Weather Notifications with Growl

Last night I download Prowl on my iPhone and setup my growl to work with it. It’s very cool stuff together, i’ve been using growl forever.

Anyway tonight I was reading in this thread in the prowl forum where one poster is using growl notifications for weather. Not just any weather but really local weather. Now if you live in or around a big town, most weather apps are pretty accurate for you area. But when you live out in the sticks like I do, they are only close most of the time.

Anyway tonight I set up this excellent pair of perl scripts as outlined here from IBM: Develop your own weahter maps and alerts. Which is a very cool script that will allow you pinpoint your location. I used Photoshop to create the base map from the layers. Once followed all the instructions, some things are not exactly clear at first, but if your familiar with perl reading the code sorts it all out. I setup the notify scripts to send the messages to growl via the growlnotify command.

Now once that was all setup I created a simply bash script that would delete the old Radar overlay, pull the current Radar overlay needed and run the perl weather scripts. I then stuck that script in my crontab. So if I’m at my computer I get notified and if i’m away from my computer i get a push notification to my phone. Very cool stuff. Of course I could just look outside to see if it is raining 🙂

Splunk on OSX

Another tool that I like use is Splunk. Now we use a different set of tools for log monitoring and management at work, but I enjoy using splunk at home.

The good thing about Splunk on OSX is that they provide you with a .dmg to download and .pkg to install. Takes longer to download than to install. Once the install is done just start it up and log in.


Next up for reinstall is OSSEC. OSSEC is an Open Source Host-basted Intrusion Detection System. I also had this installed before the i reinstalled OSX.

To install OSSEC just follow the default instructions and everything works out just fine. Note, you’ll have to start this manual after each reboot, I’m sure there is a way to add it to autostart, but I haven’t gotten there yet.

To install the OSSEC-WUI follow the instructions up to the point before running the script, it will not work on OSX (client anyway, not sure about server). All you need to do to get it working is first change the permission on the whole folder and files to _www. Then you need to add the _www user to the ossec group. That is done with the following command:
sudo dscl . -append /Groups/ossec GroupMembership _www

Thats it now its up and running and you have a nice interface for it.

Cacti on OSX

To continue on with monitoring my home network environment with the some of the tools I use to monitor my work environment I’m reinstalling Cacti. Now before the reload of my mac I had cacti running and graphs for at least 3 years. Now while I don’t mind losing that historical data i do mind loosing all the custom scripts that I had written to monitor so of the now SNMP devices on my network, I will probably pull that drive out and copy the data over soon. Note to self include all these config files in my future backup plan.

My first run at installing Cacti was via Macports, which I’ve never tried before. What I discovered is that, the version on macports wouldn’t install with the plugins support. So I did the way I normally do an installed from source. No special notes for osx here, it just works. Same goes for adding the plugin support, worked out of the box, following there install instructions.

So all I can recommend is following the install instructions and install from ports and you’ll be in business. The only thing that I think doesn’t work is the Localhost memory usage. But I’ll be digging into that soon and getting it sorted out with the mac version.

VIM and Nagios

I edit just about all my nagios files at the command line. I have found a nagios.vim file that highlights the syntax and really helps when working with the files.
First you can get it here: nagios syntax
Next simply follow the install details listed. I made the following changes to fit my nagios installation on osx via macports:
on the line that starts au BufNew, i changed the line to:
au BufNewFile,BufRead /opt/local/etc/nagios/objects/*.cfg set filetype=nagios

Another note, just in case you haven’t already done so you can auto enable the syntax for vim buy putting the following line in your .vimrc
:syntax enable

More Nagios Plugins on OSX

More about my nagios tweaking on OSX.

Adding check_dig (checks the DNS Server)
First there is no command defintion for this already setup. You’ll need to edit: /opt/local/etc/nagios/objects/commands.cfg
and add the following:
# ‘check_dig’ command definition
define command{
command_name check_dig
command_line $USER1$/check_dig $ARG1$

in your router,localhost, or where ever this services is add:
define service{
use generic-service
host_name linksys-wrt54g
service_description DNS
check_command check_dig!-H $HOSTADDRESS$ -l -A “+tcp”

Next up is check_dhcp
Nothing much here expect on my OSX it doesn’t get a mac so you’ll have to include that in your command: for example mine looks like:
check_dhcp!–mac=00:14:51:62:57:b3 -s $HOSTADDRESS$
(note I made that mac up, not sure exactly if thats a good idea or bad idea)

Next up is check_disk
while check_local_disk is already setup to monitor your disk, I wanted to added my 2 Firewire drives, myservices definition looks like this for the first one.

define service{
use local-service
host_name localhost
service_description FireWire1
check_command check_local_disk!10%!5%!/Volumes/Firewire1

Next up check_ftp
Nothing special here, works out of the box.

Next up check_http
Works out of the box

next up check_ifoperstatus and check_ifstatus
works out of the box

next up check_ide_smart
Was not compiled and installed from Macports on my system.
After doing some research the files need to compile this are linux only and after some searching there is no osx version of it.

next up check_mysql
This was not compiled and installed from Macports on my system for some reason, I think i didn’t have mysql installed at the time. Not sure if it would have worked then. Any way what I ended up having todo was downloading the source file of nagios-plugins. And running the configure like so:
./configure –with-mysql=/opt/local/lib/mysql5

then I was able to copy the check_mysql and check_mysql_query to /opt/local/libexec/nagios

And they worked fine.

Works out of the box, here is an example of the file locations on my mac:
./check_nagios -e 5 -F /opt/local/var/nagios/status.dat -C /opt/local/bin/nagios

Thats about it for all the stuff that I have and the standard plugins.