danieleagle

Proxmox - Email Alerts Setup (gmail)

1. SSH into proxmox node and become root user. Run the following commands to download extra software dependencies we'll need.

   apt update
   apt install -y libsasl2-modules mailutils

2. Enable 2FA for the gmail account that will be used by going to security settings

danieleagle

{
    "final_space": true,
    "console_title": true,
    "console_title_style": "folder",
    "blocks": [
        {
            "type": "prompt",
            "alignment": "left",
            "horizontal_offset": 0,
            "vertical_offset": 0,

danieleagle

On-Prem RKE2 api-server HA with Kube-VIP

               ,        ,  _______________________________
   ,-----------|'------'|  |                             |
  /.           '-'    |-'  |_____________________________|
 |/|             |    |    
   |   .________.'----'    _______________________________
   |  ||        |  ||      |                             |
   \__|'        \__|'      |_____________________________|

danieleagle

kubectl with ZSH (oh-my-zsh)

How to configure

Use the following commands to add the kubectl autocomplete to zsh:

mkdir -p ~/.oh-my-zsh/custom/plugins/kubectl-autocomplete/
kubectl completion zsh > ~/.oh-my-zsh/custom/plugins/kubectl-autocomplete/kubectl-autocomplete.plugin.zsh

danieleagle

Setting up MSYS2 with ZSH on Windows 11

If you want to code in Windows 11 but prefer the familiarity of a Unix environment.

• Install MSYS2
• Run MSYS2 inside Windows Terminal (or Preview) - optional
• Install oh-my-zsh
• Set zsh as your default MSYS2 shell
• Expose packages installed in MSYS2 to Windows

danieleagle

To send the ip addres of the client/webbrowser to the server/webserver behind it there are a few options:
 1- option forwardfor
 2- send-proxy
 3- source 0.0.0.0 usesrc clientip

1- option forwardfor
This is an easy option to configure in haproxy, it does require that http layer7 processing is used 'mode http' and the webserver/ webapplication that wants to log or use the ip of the client must use the http-header 'X-Forwarded-For' to read the clientip.

2- send-proxy / send-proxy-v2 / send-proxy-*
This is can be used both with mode tcp and http, it does however require that the server also understands the proxyprotocol. Some applications have added support for this protocol which adds a few bytes with ip information before the actual request. 

danieleagle

GlusterFS SSL setup tutorial

Following:

• http://gluster.readthedocs.io/en/latest/Administrator%20Guide/SSL/
• https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3.1/html/Administration_Guide/chap-Network_Encryption.html

I use GlusterFS 3.9 here.

Prerequisites

danieleagle

global
        log /dev/log    local0
        log /dev/log    local1 notice
        chroot /var/lib/haproxy
        stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
        stats timeout 30s
        user haproxy
        group haproxy
        daemon

danieleagle

knowledge dump on container runtimes

KataContainers
- image coupled with kernel 
- light vm layer
- can run in nested virturalization environments if hardware supports and you can enable it in bios (ex. only bare metal EC2 instances, limits many cloud providers)
- slower startup time
- OCI compliant
- previously known as ClearContainers by Intel

danieleagle

Select all and delete (actually move to buffer)
:%d

Select all and copy to buffer
:%y

Use p to paste the buffer.