Tag Archives: python

OVH API notes


Create App: https://eu.api.ovh.com/createApp/

Python wrapper project: https://github.com/ovh/python-ovh

Web API control panel: https://eu.api.ovh.com/console/#/


Example of ovh.conf file



Custom python script to allow access only to a specific project under my Cloud OVH account


How to create a script

  1. Create the app from the link above
  2. Get the keys and store them safely
  3. Install the OVH python wrapper
  4. Create ovh.conf file and use the keys from your app
  5. Use the python example (or mine) to get the customerKey
  6. Update ovh.conf with the customKey
  7. Create your script and have fun! 🙂

Script example to get a list of snapshots:


Whatsapp to command your Raspberry Pi and Nagios monitoring

Do you want to command your Raspberry Pi via Whatsapp and have this system monitored and brought up by Nagios in case it dies?

Follow this guide! 🙂


  • Spare SIM card (number will be used by your Raspberry Pi)
  • A phone to keep the SIM card on during the registration process only
  • A Raspberry Pi (Debian 8 recommended)
  • Nagios

Let’s do it!

Step 1: Put your SIM in the phone and make sure the SIM can receive text messages (no data is required)

Step 2: Install/configure your Raspberry Pi




To make all this magic happening, we’re going to use Yowsup

Here some easy steps to install on Raspian: (you can use also pip install yowsup2):

Once installed, you need to register your phone number, extract the password and use it to configure the following scripts.

To register, create a file called mydetails and add the following (replace country code and phone number accordingly):

After that, run this:

You should receive a text on your phone with a 6 digits code (xxx-xxx format). Use the following command to get the password:

After a little while, you should see some output like this:

Grab the pw bit and add append to your mydetails file:

Now you can test using the below bash script (demo.sh):

All should (hopefully) work! 🙂

Python scripts for yowsup

The following scripts and configurations are based on the following:

  • the user “piuser” is the one who will run the main scripts
  • scripts are stored into /home/piuser/WhatsappOnPi/scripts
  • the user “nagios” will need some extra privileges to run some scripts


In /home/piuser/WhatsappOnPi/scripts create the following scripts:

1) whatsapp.py

This script is the one that keeps layer.py script up and running.

2) layer.py

This script is the main one that you need to customise as you’d like:

3) mysettings.py

This is included in both scripts and it needs to be updated accordingly:


Now let’s create a wrapper to start the script:  /usr/local/bin/whatsapp_start


And now let’s append this into /etc/rc.local:

Every time we reboot the server, the script will start!


But… what happens if the script dies or something goes wrong?

Answer: Nagios!

Create custom plugin script for Nagios and save it in /usr/lib/nagios/plugins/check_whatsapp

NOTE: Make sure to follow the notes in this script to proper setup visudo


Now let’s enable this script in /etc/nagios/nrpe_local.cfg:


On the Nagios SERVER, let’s add the new service.
Following my current setup mentioned here, I’m going to add the following in /etc/nagios3/conf.d/hostgroups_services.cfg

When the service is configured, we need to append this service on the host where we want the check to be executed and verified (config in /etc/nagios3/conf.d/hosts.cfg – eg:)


A couple of restarts/reloads (nagios client and nagios server), and the check should be now visible in the web interface! 🙂

NOTE: You might see Waiting for this message. This may take a while.” on your Whatsapp while trying to talk with your Pi. And you can wait as much as you like, but it won’t get fixed by itself.

So… how make things working again?
What I’ve done to fix it is:

  • stopping nagios3 (setup to try to restart Whatsapp script if down)
  • kill the whatsapp python script running
  • use the above demo.sh script to send/receive some manual messages
  • if you can chat (send/receive correctly), you can now stop demo.sh script and start again your whatsapp python script

This always fixed this issue for me 🙂

Apologies for the typos and mistakes. This has been published more as a note for me than a proper how-to

Source: http://www.techradar.com/how-to/computing/how-to-control-a-raspberry-pi-using-whatsapp-1315610/2

Many thanks to Paul for the initial python scripts templates 🙂

Physically restart Sky router via Raspberry Pi

I have a Sky Hub router, the SR102 (black). Previously I had the white version as well.
Nice routers, pretty stable, but badly locked. You can change the SID of your wifi, change the password… not either sure if you can do a proper port forwarding. So… perfect for my mum, but a pain for whoever wants a little bit of extra control.

I had already an ASUS RT-N16 with DD-WRT firmware so I used the DMZ function on the Sky router to have some sort of “link” of the public IP of my broadband directly on the WAN interface of the router. In this way it’s like that is my ASUS router that does the connection and I can play as freely as I want, without caring much about the Sky router.

However, it happens that sometimes you need to give a full reboot to the main Sky router. And maybe do this automatically or via command line/script. And here it’s when things are getting more complicated.

The Sky Hub router allows you to reboot it via HTTP. Using the DMZ anyway will bypass the router itself and forward all the requests to the ASUS router. Also, I have never liked the idea to expose my router management page to the Internet, but I rather prefer to connect via SSH on a Raspberry Pi and issue commands from the terminal (telnet/ssh).

So, beside my multiple attempts to find a way to curl the button on the page, I had to find an alternative way to makes this happen. Of course, it didn’t help either to call the Sky Helpline asking if there was a remote possibility to have telnet enabled.

After a bit of talks on Facebook with some friends, here the solution: Remote Controlled Sockets with Pi-mote

Yes. If I can’t reboot from inside, let’s to that from outside!

The process was pretty straight forward.

First of all, I had to turn off my Raspberry Pi, and plug the “little green piece of board” as mentioned in here

After that, I’ve turned the pi on again, and installed the required packages. Happily I found that there is now the python library available for energenie, so I have installed them as well, making my life easier 🙂

Once done, I have created these two basic script and I have run one a time, to configure the socket plugs.

Make sure to plug the ONE SOCKET PLUG A TIME and run the relative script.

You can find more information in the previous PDF, but these sockets learn who they are based on which commands they are receiving during the learning mode (enabling keeping the green button pressed for about 5 seconds when switched off). So if you run the first script with both plugs connected and in learning mode, they will do exactly the same, and unless you want to control two sockets at the same time, better to follow the instructions 🙂

Script to configure the first socket:


Script to configure the second socket:


And now, my simple script to make… “the magic”: plugs.py

You can use this script to control any sockets (up to 4 – hardware limitation).

And here a bash wrapper (I’m not really good in python sorry) that calls plugs.py and restart the router: restart_sky_router


Now, I can have my Nagios system to check for the speed as documented here and eventually issue restart_sky_router script to see if it fixes the issue. Or simply be able to have a command to integrate in your scripts!