Linux

• Gentoo linux on Dell XPS 13
  

  This manual is for the 9350 (2016 model) and 9380 (2019 model). Differences are indicated.

  Use the newest of the newest kernel version. I'm using 4.5.0-rc3 and that is one of the first versions that boots consistently without a lot of patching.

  Update 2021-01-23: I've upgraded to kernel 5.10.7 and on my 9300 the video still does not work optimal. Displays don't seem to be reliab…

• MySQL 5.7 => 8.0
  

  How to upgrade MySQL with version 5.7 to 8.0.

  Info

  • INPLACE upgrade from MySQL 5.7 to MySQL 8.0
  • MySQL Shell 8.0.4: Introducing “Upgrade checker&r…
• NFC with the TouchATag (ACR122U)
  

  Nice tools to make it possible to clone cards. As long as you have the key. But in some cases suppliers just use the default keys and then all tools work instantly.

  Setup

  Disable the kernel modules:

  /etc/modprobe.d # cat blacklist.conf
install nfc /bin/false
install pn533 /bin/false
install pn533_usb /bin/fal…

• git
  

  Migration to github

  • git remote -v
  • git remote set-url origin git@github.com:<user>/<repo>.git
  • git push --all

   

• Server install
  

  This describes how I install my server from scratch. I'm using Gentoo.

  Hardware

  • 2x Samsung 970 pro
  • 2x 4T HDD

  Disks

  SSD

  Number  Start (sector)    End (sector)  Size       Code  Name
     1 &nbs…

• screen shortcuts
  
  OpsGenie
  

  Install Marid under Docker

  See: https://hub.docker.com/r/olivernadj/marid/ and https://github.com/opsgenie/opsgenieclient

  1. docker pull olivernadj/marid
  2. docker run --name marid -it olivernadj/marid

  Docker
  

  My docker notes

  Install under Windows

  • Download "Docker Toolbox" for Windows if your system does not meet the minimum requirements for the native Windows version.
  • If you are using a proxy you have two options:
    - set proxy environment variables in your Windows
    - manually download the boot2docker.iso file and place it under "C:Users<user>.dockerma…

  Often used
  

  System update

  • emerge --sync
  • emerge --update --deep --newuse --with-bdeps=y @world
  • revdep-rebuild
  • emerge --depclean

  Hetzner VNC rescue

  • https://robot.your-server.de/server
  • Rescue -> vKVM 64 bit
  • ssh root@<host> -p 47772 -L5901:localhost:5901
  • cat /opt/vkvm/vkvm-pass
  • vnc l…

  Gentoo Tools
  

  app-portage/cpuinfo2cpuflags

  Determine CPU_FLAGS_X86 to put in make.conf. Also use ${CPU_FLAGS_X86} in use="" because not all packages are converted to use the CPU_FLAGS_X86 setting.

  Key	Action	Notes
  Ctrl+a c	new window
  Ctrl+a n	next window	I bind F12 to this
  Simple up check of ip address This script simply pings the given ip-address and every time there is a change in response status it shows the date and the status. This is nice to keep track of conections that flap a lot. #!/bin/bash if [ "$#" -ne 1 ]; then   echo "Usage: $0 <host>"   exit fi … cni - Container Networking Interface Some links with explanations for cni http://www.dasblinkenlichten.com/understanding-cni-container-networking-interface/ http://www.dasblinkenlichten.com/using-cni-docker/ http://linux-sunxi.org/Xunlong_Orange_Pi_Zero http://www.orangepi.org/downloadresources/orangepizero/ https://www.armbian.com/orange-pi-zero/<… Kubernetes Links: https://kubernetes.io/ https://kubernetes.io/docs/concepts/ https://www.slideshare.net/imesh/an-introduction-to-kubernetes
  Command	Explanation	Example
  fdisk -l	List the partition tables for the specified devices