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  • Jan 02 / 2017
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iTerm – Automatic mutliple panes with AppleScript

It’s often very useful to automate opening of multi panes with iTerm to execute many commands or getting access to many servers at the same time. This can be done through AppleScript.

You can copy this script and save it as multi-panes.scpt

Then, you just have to call the script directly:

And here is what you’re getting:

Feel free to add/remove/update the actions as needed!

  • Dec 07 / 2016
  • 0
Linux

Nagios plugin – Error “No such file or directory”

When trying to execute a nagios plugin, you’re getting this error:

But when checking further, the file does exist:

This can be due to some 32 bit libc libraries missing. To fix that, you will have to install the 32-bit shared libraries for AMD64 by installing this package:

And now, you can try again, error should have gone away!

  • Nov 24 / 2016
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Linux

NRPE – Enable command args (Jessie, …)

With recent versions of NRPE server, the possibility to enable command args has been disabled.

For example, on a Debian Jessie, you can get this kind of error on console:

and in logs:

!WARNING! This change can lead to security issue, this is why it has been disabled by default. You have to double check your servers can’t be reached from anywhere with NRPE commands (to avoid execution of unwanted or malicious code).

Once you’re sure there’s no security breach in your infra, you can go on with the installation of source:

Then, you’ll have to change the rules defined in the rules file:

You must add this line –enable-command-args after –libdir=/usr/lib/nagios.
You should so get something like

Finally, you can compile your new configuration and install it:

Ensure you set the value for dont_blame_nrpe in /etc/nagios/nrpe.cfg (this is the default path, it can be different depending on your installation).

And here you go, you can now restart your NRPE server and send any nrpe commands.

  • Nov 21 / 2016
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Linux

Apache – mod_auth compatibility for 2.2 and 2.4

Since Apache 2.4, mod_auth changed and some directive like

that have been replaced with

If you want to automatically handle same configuration for multiple servers where different versions of Apache are installed, you can use this trick:

Thanks to that change, your configuration will be working whatever version of Apache you’re using.

  • Nov 07 / 2016
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Database

PostgreSQL – Check value is in arrayPostgreSQL – Vérifier la présence d’une valeur dans un tableau

With PostgreSQL, if you have a field containing an Array and you want to get all the results containing this value in the array, you can use the following command.

Here, we are looking for all the results in the table my_table containing my_value in the field my_array.

Avec PostgreSQL, si vous avez un champ qui contient un tableau et que vous voulez obtenir tous les résultats qui contiennent une valeur dans le tableau, vous pouvez utiliser la commande suivante.

Ici, nous recherchons tous les résultats de la table my_table contenant my_value dans le champ my_array.

  • Oct 28 / 2016
  • 0
Linux

Add a confirmation dialog with bashAjouter une confirmation en bash

If you have a bash script doing some critical actions, it can be useful to add a confirmation dialog to double check with the user that he really wants to perform the action.

Here is a very simple script allowing this kind of checking:

Output will look like:

  • Case ‘yes’:
  • Case ‘no’:

It’s up to you customizing it depending on your needs and your feelings!Si vous avez un script bash qui exécute quelques actions critiques, il peut être utile d’ajouter une confirmation pour vérifier que l’utilisateur veut réellement exécuter l’action.

Voici un script très simple qui vous permet de faire ce type de vérification :

L’affichage ressemblera à :

  • Cas ‘yes’ :
  • Cas ‘no’ :

Libre à vous de le personnaliser selon vos besoins et vos envies !

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