Debian Wheezy provides an ancient version of pip utility for installing Python packages. To put it very simply, it does not work anymore as it is not using HTTPS protocol, but fortunately this issue can be quickly fixed.
Create certificate signing request and use it to generate SSL certificate. I strongly suggest to read my two earlier blog posts about self-signed SSL certificates and private keys as these contain useful information. I will describe three different ways to generate certificate signing request.
Install UniFi controller to configure wireless network using Ubiquiti devices.
Icinga2 documentation clearly describes the master->satelitte->client setup, but as of now everything can be configured using director module and top down approach, so you can easily monitor external remote networks that are not accessible from the master server.
free utility is used to display amount of free and used memory in the system. Debian Strech provides an upgraded package. Output format has changed and available memory is calculated using different method, so let's see what we can do with these modifications at this moment.
Alteration of the software RAID arrangement often requires an update to the boot configuration of the mdadm utility for management of Software RAID.
Icinga is a great monitoring solution, especially when you use director module to perform configuration in top down environment. It makes application more accessible to more people as you can use web-interface and role based permissions to allow developers and testers to write and use their own checks and notifications.