Here are some notes intended to help installing sensu server on
Debian/Squeeze following the instructions for CentOS given by
joemiller's on his blog:
http://joemiller.me/2012/01/19/getting-started-with-the-sensu-monitoring-framework/


Install rabbitmq
----------------

The rabbitmq version available in squeeze is quite a bit old. It it necessary
to install the one provided by RabbitMQ in order to have access to SSL and
the rabbitmq management console as described in the joemiller's post.

http://www.rabbitmq.com/install-debian.html

No need to install Erlang manually, this will be done when installing
rabbitmq thanks to the decencies.

Follow the joemiller's instructions for making the SSL certificates and
configuring rabbitmq to use them. Pay attention to run the "ssl_certs.sh"
script with bash (sh is linked by default to dash and does not support the
non-POSIX 'function' keyword).

Just "/etc/init.d/rabbitmp-server restart" after the the "RabbitMQ webUI
management console" install. 

Then you can go straight forward with the joemiller's instructions.


Install redis
-------------

A version >= 2 is required in order to make sensu-api to work ("hash commands"
which came with redis 2 are needed by sensu-api).
The 2.4.2 version from http://backports.debian.org is what you need.


Install ruby 1.8.7
------------------

# apt-get install ruby rubygems curl libssl-dev


Install Sensu components
------------------------

# gem install sensu sensu-dashboard
# ln -s /var/lib/gems/1.8/bin/sensu-* /usr/bin/

#adduser --no-create-home --disabled-password sensu
# mkdir -m 0750 /var/{log,run}/sensu
# chown sensu:root /var/{log,run}/sensu

Here is an archive which I have collected in:
- the sense example files of @jeremy_carroll's rpm packages
- System-V init scripts for Debian for sensu-server, sensu-api, sensu-client
  and sensu-dashboard  

# wget http://olecam.online.fr/sensu-files-debian.tgz
# tar xvfz sensu-files-debian.tgz
# cp etc/init.d/sensu-* /etc/init.d/
# cp -r etc/sensu /etc/

# update-rc.d sensu-client defaults
# update-rc.d sensu-server defaults
# update-rc.d sensu-dashboard defaults
# update-rc.d sensu-api defaults

All you need is now done, you can then follow the joemillers's post from "Copy
the SSL client key + cert that we created earlier into /etc/sensu/ssl".


Make Debian packages for squeeze
--------------------------------

I have provided a simple bash script which will build debian packages for all
the sensu components. Download it at:
http://olecam.online.fr/build_packages.sh

Copy that script in, say, ~/src/sensu then create a ~/src/sensu/patches
directory and wget the following files in it:
http://olecam.online.fr/sensu.patch
http://olecam.online.fr/sensu-dashboard.patch

Pay attention to install some stuff:
sudo apt-get install gem2deb libssl-dev
sudo gem install fpm && ln -s /var/lib/gems/1.8/bin/fpm /usr/local/bin/

When done, launch ./build_packages.sh to build the debian packages for sensu.

If you prefer you can also fetch one of my repositories. Add the following line
to your apt's:
deb http://repository.csi-hosting.net/debian squeeze-sensu main

then add the public key of that repo to your trusted key list:
wget http://repository.csi-hosting.net/csi.gpg
sudo apt-key add csi.gpg

Note that I won't upgrade the packages each time a new sensu version is
released. This is why it is generally better to make the packages by
yourself! :)

Feel free to ask for any questions on #sensu at freenode.

HTH!

Olivier Le Cam (olecam at online.fr)