Winter time is crafting time! I spent the last couple of days on the Raspberry Pi and PIR sensors (Passive Infrared). Using this sensors it is possible to recognize motions - in combination with GPIO APIs you can create useful applications.

The first idea that came in my mind was to monitor my washing machine in the …

Especially in Microsoft-embossed environments it might be needed to send and receiver mails over Exchange. Some graphical mail clients like Evolution are offering support for this - of course this is not a good solution for servers without graphical user interfaces.

DavMail is a Java-based platform-independent software …

When hard drive sizes are altered the Linux kernel isn't informed about these changes automatically. Rebooting the system is a possible solution - but often no option.

Beneath the directory /sys/class/scsi_disk you will find additional files controlling some of the device's function depending on the SCSI id. Using the …

GitHub is a very comfortable portal to collaborate source coces. The service manages versions using Git - for documentation purposes bugs and wiki contents can be provided. Especially the open-source scene uses the service a lot but for internal, non-public developments it is only partially suitable.

Premium users are …

When running a virtualized vCenter server it is very important to have a working backup. If the vCenter server crashes the virtual landscape cannot be managed or monitored.

Configuring backup is very easy when running VMware vCenter Server on a conventional Microsoft Windows servers because it is a fully-features …

Many software cluster solutions require shared storage between all cluster nodes. A very prominent example for this might be Oracle RAC (Real Application Clusters). In enterprise environments shared cluster storage is often implemented using SAN storage that is connected to multiple systems.

For (private) test …

Using Raspbian it is possible to convert a Raspberry Pi into a full-featured Webserver with PHP support. Using SQLite the embedded web server is also capable of serving database-driven web applications.

First of all the official Monkey APT repository needs to be included - this can done very easily by addind a line …

Recently I discovered the following hint in the vCenter service state overview:

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