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@timothyham
timothyham / ipv6guide.md
Last active December 19, 2024 19:01
A Short IPv6 Guide for Home IPv4 Admins

A Short IPv6 Guide for Home IPv4 Admins

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones.

Let’s begin.

First of all, there are some concepts that one must unlearn from ipv4:

Concept 1

#!/bin/sh
# This is an example script to force provision a UniFi network device using the controller API
# If you are running this externally then replace localhost with the hostname
baseurl=https://localhost:8443
# I would make a dedicated admin user for this
username=<username_here>
password=<password_here>
@gh640
gh640 / use_mysqltuner_in_mariadb_container.sh
Last active November 19, 2024 18:27
Sample: Use MySQLTuner in `mariadb` Docker container
# MySQLTuner: https://github.com/major/MySQLTuner-perl
# Open Bash with the container.
docker exec [mariadb_or_mysql] bash
# Change the working directory to `/tmp`.
cd /tmp
# Install wget.
apt-get update

NX-SM400

Essa é a versão em português

For the English (en-US) version check THIS LINK

A algum tempo, alguns modelos de smart plug com o padrão de tomada brasileiro começaram a aprecer no AliExpress.

# Docker networking is messy and undocumented. Docker will create IP addresses and iptables at random times.
# This can be limited by using totally static IP addresses for network interfaces and avoiding the default network bridge.
# /etc/default/docker
# DOCKER_OPTS="--iptables=false --ipv6 --bip 172.16.0.1/16 --fixed-cidr 172.16.0.0/16 --fixed-cidr-v6 2a01:9000::/68"
# --bip is the host IP address of the docker0 interface
# --fixed-cidr is the CIDR subnet allocated to the docker0 interface (default network bridge)
# --fixed-cidr-v6 is the IPv6 CIDR allocated to docker0
# for IPv6 split your /64 delegated subnet into /68 subnets and allocate them to each docker-compose.yml subnet:
@ttimasdf
ttimasdf / 00-Systemd_service_for_autossh.md
Last active June 19, 2024 06:58 — forked from thomasfr/autossh.service
Systemd service for autossh

Usage

curl -sSL https://gist.githubusercontent.com/ttimasdf/ef739670ac5d627981c5695adf4c8f98/raw/autossh@host1 | \
  sudo tee /etc/default/autossh@example
curl -sSL https://gist.githubusercontent.com/ttimasdf/ef739670ac5d627981c5695adf4c8f98/raw/autossh@.service | \
  sudo tee /etc/systemd/system/autossh@.service

sudo useradd -g nogroup -s /bin/false -m tunnel
sudo -u tunnel mkdir -p ~tunnel/.ssh # and copy your private key here
@MawKKe
MawKKe / cryptsetup-with-luks2-and-integrity-demo.sh
Last active November 13, 2024 18:33
dm-crypt + dm-integrity + dm-raid = awesome!
#!/usr/bin/env bash
#
# Author: Markus (MawKKe) ekkwam@gmail.com
# Date: 2018-03-19
#
#
# What?
#
# Linux dm-crypt + dm-integrity + dm-raid (RAID1)
#
@rwb27
rwb27 / set_picamera_gain.py
Last active April 27, 2023 15:09
Manually setting gain of raspberry pi camera from within python
from __future__ import print_function
import picamera
from picamera import mmal, mmalobj, exc
from picamera.mmalobj import to_rational
import time
MMAL_PARAMETER_ANALOG_GAIN = mmal.MMAL_PARAMETER_GROUP_CAMERA + 0x59
MMAL_PARAMETER_DIGITAL_GAIN = mmal.MMAL_PARAMETER_GROUP_CAMERA + 0x5A
@0x3333
0x3333 / prompt_0x3333_setup
Last active September 21, 2017 22:12
Prezto Prompt
#
# Authors:
# Tercio Gaudencio Filho <terciofilho@gmail.com>
#
# Ex:
# USERNAME@HOSTNAME [/FULL/PATH] ✘ $ TIME
function prompt_0x3333_setup {
setopt LOCAL_OPTIONS
unsetopt XTRACE KSH_ARRAYS
@mapuo
mapuo / debian_ksm.md
Last active July 17, 2024 08:06
Enable KSM (Kernel Same-Page Merging) on boot in Debian

Enable KSM (Kernel Same-Page Merging) on boot in Debian

I have installed and run Netdata on my Debian based home server and I wanted to enable KSM after Netdata installer suggested it could save some RAM.

To enable the KSM on boot in Debian you I executed these steps:

  1. Install ksmtuned without all the QEMU dependencies: