Karthic Raghupathi karthicraghupathi

Setting up email with SMTP on Ubuntu/Debian Servers

I used to sift trough my shell history and bookmarks every time I set up a new testing server in order to be able to send mails. So this should help...

Be aware don't use ssmtp anymore. It's unmaintained and has been removed from Debian and Ubuntu will most definitely follow suit.

Install msmtp

Here is how to use pipx to install ansible and related tools.

pipx install --include-deps ansible

pipx inject --include-apps ansible ansible-lint

pipx inject --include-apps ansible molecule

pipx inject ansible 'molecule-plugins[podman,vagrant]'

Vagrant and VMWare Fusion 13 Player on Apple M1 Pro

This document summarizes notes taken to make VMWare Fusion 13 Player work on Apple M1 Pro. It builds upon a previous (deprecated) document based on VMWare Tech Preview 21H1

VMWare Fusion 13 was released on November 17, 2022 and Fusion 13.5 on October 19, 2023

Created on: November 20, 2022

Updated on: June 1, 2024

References

Why?

MySQL’s utf8 charset only implements some parts of the whole UTF-8 encoding and it only uses 1 to 3 bytes for encoding. So when you try to use some characters occupying 4 bytes, those characters cannot be stored and there are some warnings.

Freeswitch outbound calling through Asterisk

[cloud]
type=peer
host=X.X.X.X
port=5080
allow=all
;allow=ulaw
;allow=alaw
trustrpid=yes

Setup nut and netdata on Ubuntu

In this document, I will explain how to setup nut (Network UPS Tools) on Ubuntu 18.04 and 20.04.

It is basically the next chapter of my previous gist, Upgrade nut on Ubuntu 18.04.

I'll only document USB connected UPS and not the other supported connection modes.

Install required dependencies

gunicorn workers

We've learned SyncWorker for gunicorn in part1, now let's see how other workers work

Why Multiple SSH keys?

There are numerous reasons you may need to use multiple SSH keys for accessing GitHub and BitBucket

You may use the same computer for work and personal development and need to separate your work.

When acting as a consultant, it is common to have multiple GitHub and/or BitBucket accounts depending on which client you may be working for.

You may have different projects you're working on where you would like to segregate your access.

	#!/bin/bash
	# #
	# ███████╗██╗ ██╗███████╗███████╗████████╗ ██████╗ ██████╗ ██████╗ ██████╗ #
	# ██╔════╝██║ ██║██╔════╝██╔════╝╚══██╔══╝██╔════╝ ██╔═══██╗██╔═══██╗██╔══██╗ #
	# ███████╗██║ █╗ ██║█████╗ █████╗ ██║ ██║ ███╗██║ ██║██║ ██║██║ ██║ #
	# ╚════██║██║███╗██║██╔══╝ ██╔══╝ ██║ ██║ ██║██║ ██║██║ ██║██║ ██║ #
	# ███████║╚███╔███╔╝███████╗███████╗ ██║ ╚██████╔╝╚██████╔╝╚██████╔╝██████╔╝ #
	# ╚══════╝ ╚══╝╚══╝ ╚══════╝╚══════╝ ╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═════╝ #
	# #
	# IT-Beratung mit Fokus auf Datensicherheit #

	# Used on Ubuntu 18.04 and 20.04
	# Find instructions for other OSes here: https://certbot.eff.org/instructions

	# Install Certbot via Snaps
	sudo snap install core; sudo snap refresh core
	sudo snap install --classic certbot
	sudo ln -s /snap/bin/certbot /usr/bin/certbot

	# Install DNS CloudFlare plugin
	sudo snap set certbot trust-plugin-with-root=ok