How to use Quarkus
We will look into using Quarkus, a framework for building java endpoints in a reactive manner. Change code, package structure or class names and the server will restart and just work.
We build a rack and I walk about what goes into the building process and showing the process. We also talk about networking like keystone jacks and cable management.
We talk about the Feistal Cipher and implement a simple proof of concept to test the algorithm out. Computerphile video: https://www.youtube.com/watch?v=FGhj3CGxl8I Source code: package org.ea; import java.security.MessageDigest; import java.util.Arrays; public class FeistelAlg { private final static String plainText = "the brown fox jumped over the lazy dog"; public static void doRound(byte[] left, byte[] right) throws…
We talk about the new features in Java 12, all about garbage collectors and switch statements.
Looki Looki No Hands, Automatic install of Ubuntu server. Extracting all the files from the original ISO mkdir source-files xorriso -osirrox on -indev ubuntu-22.04.2-live-server-amd64.iso –extract_boot_images source-files/bootpart -extract / source-files Edit the boot menu menuentry "Autoinstall Ubuntu Server" { set gfxpayload=keep linux /casper/vmlinuz quiet autoinstall ds=nocloud\;s=/cdrom/nocloud/ — initrd /casper/initrd } Repack the ISO from the files…
In this video we go though how to setup SSL on the API connection for object storage. We look at creating some self-signed certificate and then add them to the S3 object storage endpoint for your ceph cluster.
We will look into the Ceph dashboard and the different metrics you can find there. Then we will configure Prometheus Alertmanager to get timely alerts from the metrics in your Ceph Cluster.