Most online guides will tell you to use ap-type mobility-express to convert a Cisco AirAP3802i (or similar APs) into Mobility Express (ME) mode. This command has never worked for me - not on this AP, not on any of the other AirAPs I've tried. Even after flashing ME firmware, the option simply doesn't appear in the CLI. …

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SSH certificates offer a powerful and secure alternative to traditional key-based authentication. In this guide, we'll walk you through the process of implementing SSH certificate authentication, from creating a Certificate Authority (CA) to configuring servers and clients. We'll also provide practical tips and tricks …

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Client Code This is the client code. It simply generates a pseudo-random number and sends it to the gateway. The gateway then responds with the same number it received. If the number matches, the client beeps three times using the buzzer on pin A0. I used this setup to do a quick and dirty range test. Using a USB …

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Introduction As part of my travels and working with a large number of distributed linux systems we often need a better way to handle AAA(authentication, authorization and accounting), this wont help with 'accounting' but having a centralised machanisim to handle user sudo rights without requiring a 'phone home' …

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This Bash script is designed to delete old RBD (RADOS Block Device) volumes in a specified pool (in this case, the backup pool) based on their 'age' which is determined by the modify_timestamp popery derived from rbd info 1 2#!/bin/bash 3 4# Set the pool name 5POOL_NAME="backup" 6 7# Get the current date in …

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NVIDIA H100 Models: Specifications and Use Cases If you have ever dealt with NVIDIA's top-end GPUs as part of your day-to-day work life, you'll have noticed there is more than one H100 (or perhaps you haven't!). The product naming scheme for these GPUs is super confusing, so I thought I'd consolidate some of my notes …

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Here is my example Caddyfile for Openstack API's using Cloudflare DNS verification. I needed to build a custom Dockerfile Lazily I haven't used docker-compose, yet.. I will! 1docker run -it --rm -p5000:5000 -p 9696:9696 -p 9292:9292 -p 8774:8774 -p 8776:8776 -p 8778:8778 -p 9878:9878 -p 9511:9511 -p 8004:8004 -p …

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On a particular customer's site, all of their HP servers are logging ACPI errors to syslog, filling the log and creating noise There is some discussion here https://community.hpe.com/t5/proliant-servers-ml-dl-sl/kernel-acpi-error-ae-not-exist-region-ipmi-region-powr-sb-pmi0/td-p/7179187 about a potential fix, but there …

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In some scenarios I find sysylog being spammed with the following message vxlan: non-ECT from ADDRESS with TOS=0x2¶ I am unsure of the cause of this issue to date, I'm sure there is something going on that needs addressing here, but the syslog being filled with these errors isnt helpful Here I found some discussion …

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It's not pretty but sometimes it has to be done Here is the set of commands I use to install Ceph MONs, MGRs or OSDs manually This came about becuase I was trying to use cephadm but the tool was broken for Ubuntu 22.04 at the time(Wouldn't bootstrap) so I did a package install using apt install ceph which pulled Quincy …

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