All about my opinions on IT and much, much more …
Oracle’s Raspberry Pi Supercomputer, the largest Raspberry Pi cluster known to exist, got awarded one of the Top 10 Raspberry Pi Projects of 2019 from Tom’s Hardware.
Here is its story.
Continue reading “Building the world’s largest Raspberry Pi cluster”
Resizing a root partition (/) of a running Oracle Linux isn’t hard but the information out there on the web is limited. In my situation, I was given access to an already installed Oracle Linux environment that wasn’t using all the available space of the disk. The root partition, formatted with the btrfs filesystem, only used 4GB when 32GB were available in total.
Resizing the partition is done in two steps:
Continue reading “How to resize a btrfs root partition on Oracle Linux”
In one of my past posts I showed how one can install Oracle Linux on a Raspberry Pi from a Mac via the command line. Luckily my colleague Philippe pointed out to me that things can be even much, much easier thanks to Etcher, an open source tool to flash SD cards and USB drives. Etcher is available for Mac, Linux and Windows, which should make the following steps generic.
Continue reading “How to install Oracle Linux on a Raspberry Pi – the easy way”
Did you know that Oracle Linux is also available for ARM processors? That means that you can install Oracle Linux on an SD card for a Raspberry Pi as well. Below I will show you how to do that with a Mac.
xz, for example: xz -dkv rpi3-ol7.6-image-20181116.img.xzdd, for example: dd if=rpi3-ol7.6-image-20181116.img of=/dev/disk2 bs=16000000Continue reading “How to install Oracle Linux on Raspberry Pi”
Oracle Linux 7 doesn’t come with Python 3 by default but only with Python 2. Luckily, installing Python 3 can be done with two simple steps:
sudo yum install -y oracle-epel-release-el7sudo yum install -y python36The first step installs and enables the Oracle EPEL yum repository (EPEL – Extra Packages for Enterprise Linux) which includes the Python 3.6 version. In case the repository is already installed, yum will detect that and do nothing. So nothing will go wrong if you execute the command unnecessarily or twice.
Gerald on IT 