m3nu

# Mitigation for CVE-2026-31431 ("Copy Fail") — algif_aead LPE
# https://xint.io/blog/copy-fail-linux-distributions
# Apply: ansible-playbook playbooks/cve-2026-31431.yml
#
# One mitigation per OS family, plus a cleanup pass for hosts that received
# the (now-abandoned) systemd seccomp drop-ins in earlier runs.
#
# Tags:
#   cve-kernel          RHEL/Alma 9, 10: add initcall_blacklist=algif_aead_init
#                       to GRUB. No reboot — the arg becomes active on the

lcrilly

Prometheus exporter for NGINX Unit metrics

The NGINX Unit control API includes a /status endpoint for usage statistics. This is a solution for exposing these metrics in Prometheus format.

The application (run by Unit) queries the /status URI on the control socket and converts the JSON response into Prometheus text format. PHP and Python implementations are available.

These instructions assume an existing Unit installation with a working configuration. We will add a new listener on the default prometheus port (9090) and route it directly to the Prometheus app.

Step 0. Install the preferred Unit language module (unit-php or unit-python)

zidenis

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

code-boxx

PYTHON FLASK RESUMABLE UPLOAD

https://code-boxx.com/python-flask-resumable-upload/

NOTES

1. Run unpack.bat (Windows) unpack.sh (Linux/Mac). This will automatically:
   • Create 4 folders - static, temp, templates, upload
   • Move S2_upload.css and S2_upload.js into static.
   • Move S2_upload.html into templates.
   • Create a virtual environment - virtualenv venv

• Activate the virtual environment - venv\scripts\activate (Windows) venv/bin/activate (Mac/Linux)

nginx-gists

#!/usr/bin/env bash

if [ "$EUID" -ne 0 ];then
  >&2 echo "This script requires root level access to run"
  exit 1
fi

if [ -z "${WORDPRESS_DB_PASSWORD}" ]; then
  >&2 echo "WORDPRESS_DB_PASSWORD must be set"
  >&2 echo "Here is a random one that you can paste:"

wipash

<#
Create Unix VM's.

PREREQUISITES:
    - A VM that has been installed with an OS that supports cloud-init
    - cloud-init is installed on the vm

How it works:
    - Asks for a bunch of parameters
    - Creates a disk from parent vhdx for speed

mikejoh

Setting up a Docker container as a DHCP server

In this guide I’ve tested a number of different commands and configurations using Docker to run a container with dhcpd (+macvlan driver) to serve my clients in my home network. In the end i’ll migrate from my Windows 2012 R2 Server running DHCP to a much more lightweight Docker container (7.42 MB in total). Wow.

My home environment:

• Firewall (Juniper)
  • I’m running IP helper for bootp which in this case means that i relay DHCP requests from various VLANs into one where i've placed my Windows 2012 R2 server. This is also where my container will live. See the FW configuration below:

lopesivan

Play webcam using mplayer

To play webcam using mplayer, we will need to use TV input but with v4l2 as driver,

  $ mplayer tv:// -tv driver=v4l2

then it just plays with default values. We can add options to tweak such as width, height, output format, frame rate, select device…Each option is separated by a colon. For example, play webcam from /dev/video0, with widthxheight=1280×720, framerate=30, and output format is YUV (YUY2),

denysvitali

Quick tutorial on how to play sound from your computer to a Sonos device

Introduction

Assumptions

192.168.1.111 IP of your Sonos Device
192.168.1.128 IP of your computer

Configuration

PulseAudio

mdonkers

#!/usr/bin/env python3
"""
License: MIT License
Copyright (c) 2023 Miel Donkers

Very simple HTTP server in python for logging requests
Usage::
    ./server.py [<port>]
"""
from http.server import BaseHTTPRequestHandler, HTTPServer