Category Archives: Linux

Zabbix monitoring

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What is Zabbix monitoring? Zabbix is an enterprise-class open source distributed monitoring solution. Zabbix is software that monitors numerous parameters of a network and the health and integrity of servers. Zabbix uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows… Read more »

Setting up a firewall in Ubuntu

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uncomplicated firewall logo

By far the most popular and easy to setup firewall for Ubuntu is UFW, which stands for the ‘Uncomplicated FireWall’. In this tutorial I’ll provide some examples for setups with UFW. I tested the following lines on a fresh Ubuntu 16.04 installation, but this should all work the same with… Read more »

Ubuntu 14.04 and up: Rename a volume group containing root

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When checking my cloned Ubuntu 14.04 LTS VM, I noticed that it still contained the volume group name from the original, which is of course not desired. It seemed fairly simple, but I kept receiving an error with update-grub, reporting the old Volume Group name: /usr/sbin/grub-probe: error: failed to get… Read more »

Setting up a static IP address or Wifi on Raspberry PI 2 B

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Setting up a static IP address or Wifi on Raspberry PI 2 B

Eth0 static IP address configuration On the latest version of Raspbian (in my case, Raspbian GNU/Linux 8), you should not use /etc/network/interfaces to set up your networks. All configuration has been offloaded to the dhcpcd client. For a static IP address on the eth0 interface, you’ll need to edit file /etc/dhcpcd.conf For… Read more »

Gmail as relayhost for Postfix

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gmail as relayhost for postfix

I just installed a new Ubuntu 13.04 server and thought I’d look into using gmail as relayhost for Postfix instead of Exim for a change. Postfix is the default MTA (mail transfer agent) on Ubuntu, so let’s set it up already… Installing packages: sudo apt-get install postfix ca-certificates libsasl2-2 libsasl2-modules… Read more »

Sharing Clementine song status in Empathy

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clementine song status empathy

Found this handy python script for sharing Clementine song status in Empathy….. regrettably it did not work on my Ubuntu 12.10 desktop installation…. Apparently you have to add a line (see the second line) about the character encoding nowadays….. so just to make it easier for other people… here’s the… Read more »