Linux by example – System setup

We look into how to migrate your Ceph cluster to use orchestration using the CephAdm service. The video will cover how to prepare the systems, install the service, adopt legacy services, and add the hosts. Lastly, we will upgrade the system to Quincy’s last version and discuss the pros and cons of using CephAdm orchestration.

I show you how I test parsing functions in java using file testing; this is where I could add more files for each test case that I want to run. Testing this way makes your workflow quick and easy. Just add a file and then start to solve issues.

In this video, we try out magic wormhole and talk about the technology behind the service. It’s built by one person who has worked on similar technologies for years and has now created a minimal program to send files to anyone securely. It uses a channel and two secret words that you easily can relay…

In this video, we look into the database library Galera for MySQL or MariaDB. It enables replication over multiple hosts where each host is a master and replicated to the other hosts so it’s eventually consistent.

In this video we look into the command wmctrl that we can use to organize our videos in Linux. If we add it as a keyboard shortcut …

We talk about the different collection structures in Java and how to measure their performance and memory footprint Simple example of performance testing for collection types in java: package org.ea.debugger; import java.lang.management.ManagementFactory; import java.util.*; import java.util.function.IntConsumer; public class CollectionTest { public static void sleep() { try { Thread.sleep(3000); } catch (Exception e) { e.printStackTrace(); }…