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#!/bin/bash
# =============================================================================
#  Author: Chu-Siang Lai / chusiang (at) drx.tw
#  Filename: teams-chat-post-for-workflows.sh
#  Modified: 2024-07-22 11:44 (UTC+08:00)
#  Description: Post a message to Microsoft Teams via "Post to a chat when a webhook request is received" workflows.
#  Reference:
#
#   - https://gist.github.com/chusiang/895f6406fbf9285c58ad0a3ace13d025
#   - https://devblogs.microsoft.com/microsoft365dev/retirement-of-office-365-connectors-within-microsoft-teams/

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#!/usr/bin/env bash

# print usage
DOMAIN=$1
if [ -z "$1" ]; then
    echo "USAGE: $0 tld"
    echo ""
    echo "This will generate a non-secure self-signed wildcard certificate for "
    echo "a given development tld."
    echo "This should only be used in a development environment."

cmersinli

5 Steps for Creating Templates and Virtual Machines on Proxmox using Linux Distro's Cloud Images

This tutorial guides you through the process of creating Templates and Virtual Machines on Proxmox using cloud-based images from various Linux distributions. We provide clear instructions for Alma Linux 9, Amazon Linux 2, CentOS 9, Fedora 38, Oracle Linux 9, RHEL 9, Rocky Linux 9, and Ubuntu 23.04 Lynx Lobster.

Note: The instructions have been tested on Proxmox 8.0.4.

Let's begin by choosing the cloud-based image. If you already have your preferred Linux distribution, skip to the 1st step.

To assist in making informed choices when selecting a Linux distribution for your virtual machines, we've compiled a table showcasing key characteristics of each cloud image. This table provides a snapshot of important attributes, including kernel version, Python version, number of processes initialized after boot, number of packages installed, free memory after boot, VM disk size, root partition disk size, used size on t

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echo " updating kernel settings"
cat << EOF >> /etc/sysctl.conf
# SWAP settings
vm.swappiness=0
vm.panic_on_oom=0
vm.overcommit_memory=1
kernel.panic=10
kernel.panic_on_oops=1
vm.max_map_count = 262144

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--- RKE2 SERVER NODES (CONTROL PLANE) ---
### Apply System Settings
cat << EOF >> /etc/sysctl.conf
### Modified System Settings
vm.swappiness=0
vm.panic_on_oom=0
vm.overcommit_memory=1
kernel.panic=10
kernel.panic_on_oops=1
vm.max_map_count = 262144

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### Add and Update the Helm Repository
helm repo add longhorn https://charts.longhorn.io
helm repo update

### Create the Longhorn Namespace and Install Longhorn
kubectl create namespace longhorn-system
helm upgrade -i longhorn longhorn/longhorn --namespace longhorn-system --set ingress.enabled=true --set ingress.host=longhorn.example.com

### Wait for the deployment/rollout
sleep 30

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view the upstream gist by bgulla -> https://gist.github.com/bgulla/7a6a72bdc5df6febb1e22dbc32f0ca4f

additional docs from bcdurden -> https://github.com/bcdurden/rke2-kube-vip

cat << EOF >> /etc/sysctl.conf
### Modified System Settings
vm.swappiness=0
vm.panic_on_oom=0
vm.overcommit_memory=1
kernel.panic=10

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

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

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RKE2 commands

Install

curl -sL https://get.rke2.io | sh
systemctl daemon-reload
systemctl start rke2-server

cmersinli

# best practice: linux
nano ~/.pgpass
*:5432:*:username:password
chmod 0600 ~/.pgpass

# best practice: windows
edit %APPDATA%\postgresql\pgpass.conf
*:5432:*:username:password

# linux