Florian Heigl FlorianHeigl

This is Felix Kuehling, long time KFD driver architect. I started looking into the TinyGrad source code yesterday, focusing on ops_kfd.py, ops_hsa.py and driver/hsa.py, to understand how TinyGrad talks to our HW and help with the ongoing debugging effort from the top down. This analysis is based on this commit: https://github.com/tinygrad/tinygrad/tree/3de855ea50d72238deac14fc05cda2a611497778

I'm intrigued by the use of Python for low-level programming. I think I can learn something from your use of ctypes and clang2py for fast prototyping and test development. I want to share some observations based on my initial review.

ops_kfd looks pretty new, and I see many problems with it based on my long experience working on KFD. I think it's interesting, but probably not relevant for the most pressing problems at hand, so I'll cover that last.

ops_hsa uses ROCr APIs to manage GPU memory, create a user mode AQL queue for GPU kernel dispatch, async SDMA copies, and signal-based synchronization with barrier packets

Check Out these projects, papers and blog posts if you're working on Geo redundant Datacenters or even if you only need to have your software hosted there. It's good to know what you're in for.

  Collected these for a colleague, these have been super useful over 
  the past 15+ years and and will most likely help and/or entertain you. 
  May be extended in the future.
  -- azet (@azet.org)

load balancing

DNS geo & anycast

CheckMk Web Auth Fail2ban Config

Fail2ban Config for CheckMk Authentication over Web UI

This is a example fail2ban config for failed login attempts in the CheckMK Web UI Login Form.

Setup

Check for log files

CheckMK logs failed login attempts for each site separately at ~/var/log/web.log (relative path from the site's user).

install vQFX10k on KVM/QEMU for Testing or QA

This vQFX Platform is supposed to be used with vagrant and ships with a few nice fabrics that spin up on the go. But there's a few problems with that - which may not be instantly obvious if you plan on using it for testing or QA in your NetOps department:

This Vagrant configuration relies and only supports virtualization via Virtualbox
- so far no plans have been announced to switch from Virtualbox to another out of the box solution, so you'll have to hack this up a bit. libvirt, kvm/qemu makes this relatively simple, but you have to get familiar with their tools (again).
vQFX comes in two "VMs": a Routing Engine (RE) and a Packet Forwarding Engine (PFE)

this is due to the way the hardware is actually set-up and working on a real bare metal switch or router (same story for vMX). ASICs are supplied in the form of shim kernel modules that make it possible to unit-test more advanced features or do functional testing before deploying on real (ide

Check MK Scripts

Add host to checkmk server:

Script automatically adds the computer to the hostlist on the checkmk server. Works on Windows 10, 7(with KB3191566 update).

Create .ps1 file with following code.
Change server and client(optional) variables.
Run

NetBox API (REST, GraphQL) with Powershell

REST API

(Invoke-RestMethod -Headers @{'Authorization'='Token 0123456789abcdef0123456789abcdef01234567'} -Uri "https://netbox.my.org/api/circuits/circuits/?site_id=123").results
(Invoke-RestMethod -Headers @{'Authorization'='Token 0123456789abcdef0123456789abcdef01234567'} -Uri "https://netbox.my.org/api/dcim/sites/?region=amer&tenant=tenantname").results | Select-Object name,status
(Invoke-RestMethod -Headers @{'Authorization'='Token 0123456789abcdef0123456789abcdef01234567'} -Uri "https://netbox.my.org/api/ipam/prefixes/?tenant=tenantname").results | Select-Object prefix,site
(Invoke-RestMethod -Headers @{'Authorization'='Token 0123456789abcdef0123456789abcdef01234567'} -Uri "https://netbox.my.org/api/dcim/devices/?tenant=tenantname").results | Select-Object name,status

Walk-through to setup Enterprise Wifi with Unifi on Windows Server

Update 14/02/2024 : Added step 3-d - allowing the cert template to be issued by a CA

Why

Quite simply, you will have the ability to log on to your Company Wifi network using your Windows Domain Username and Password. No more remembering someone else's idea of a secure password. A Single Sign-on for all resources.

	#!/usr/bin/env bash

	# License: BSD
	# Author: Florian Heigl (@FlorianHeigl)
	# Contributors: Davide Gibilisco (@m3rlinux)

	set -eu

	# Function to convert bytes to human-readable format
	human_readable() {

	- name: "Roles."
	hosts: localhost
	gather_facts: true
	vars_files:
	- ./vars/config.yml
	tasks:

	- name: "Run server role."
	ansible.builtin.import_role:
	name: tribe29.checkmk.server

	---
	- name: Add required dependencies.
	apt:
	name:
	- apt-transport-https
	- gnupg2
	state: present

	- name: Add Elasticsearch apt key.
	apt_key: