A Journey of a Thousand Miles Begins with a Single Step

Use external harddrive as root filesystem for Raspberry Pi

My intention is to run a web and file server with Raspberry Pi (rpi). The micro SD-card is unfit by its capacity and lifetime (write cycles). To avoid that the primary SD-card will wear out too fast, we have to extend the storage. Raspberry Pi offers the capability to connect to further external storage over USB. I assume to keep costs low, they offer only USB 2.0 instead of USB 3.0. Since I have a two old external USB 2.5 HDD and an USB 2.0 Hub it fits perfectly the purpose. The USB hub has a separate power supply and powers the external hdd. The hdd are connected with the rpi over the hub. As side note, you could also use a USB 3.0 external HDD, but it will operate with USB 2.0 speed.

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Benefits and costs of a Raspberry Pi

What do you do if you have a bunch of spare (old) hardware, e.g. USB 2.0 hubs;-hard drives;-sticks and sd-cards? Well you can make a NAS file server with Raspberry Pi.

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Purge maven dependencies from local repository

The Apache Maven dependency plugin provides the function to remove projects dependencies from the local repository.

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Custom grok patterns for logstash

grok is a powerful filter plugin. It allows you to use regular expressions (regex). This post gives some advices how to test and develop custom grok patterns for logstash.

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[What’s the difference between SSL, TLS, and HTTPS?](http://security.stackexchange.com/questions/5126/whats-the-difference-between-ssl-tls-and-https?newreg=5a0d1d02fb244551b61b81d79f0f0753

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Filter with grok

grok is a filter plugin and “is perfect for syslog logs, apache and other webserver logs, mysql logs, and in general, any log format that is generally written for humans and not computer consumption.”

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