K3S live blog, musings of a devops engineer

  • Rancher Rio with custom domains

  • Rails 6.0.0 rc1 and webpack issues

  • SBUS on the RTFQ NOX v1 flight controller

    A while back I had purchased the ReadyToFlyQuads NOX v1 test flight controller, and coming in at $35 for an AIO board that can do blheli32 it was a great deal, even with the zero documentation provided. One issue I couldn’t solve though was why I couldn’t get sbus to work on either UART port….…

  • Authenticate AD users on Cisco switches through RADIUS

    Overview This is a quick how-to guide on how to have Microsoft Active Directory user accounts in a security group authenticate to Cisco gear. Afterwards you’ll be able to login with AD credentials on the Cisco router/switch for easier login control and management. This guide assumes:  You have a full AD environment in place  You…

  • Storage speed shootout, Dell vs EMC vs ZFS

    The gear we’re testing today: Dell Equallogic PS6500 (7200rpm disks ~48 drives) EMC VNXe3200 (7200rpm disks ~24 drives) Dell/EMC SC4020 (ssd version ~12 drives) 45Drives S45 (7200rpm ~45 drives) 45Drives Q30 (ssd version ~12 drives) Supermicro 45 bay JBOD (7200rpm disks ~45 drives) My local machines ssd (just for fun ~1 drive) All backed by…

  • Building a 45drives backend for Starwind

    Intro In this guide we’ll be going over the basics of bringing up a fresh 45drives chassis with the following: Ubuntu 16.04 ZFS for linux iSCSI targeting with targetcli 45drive LSI driver installs 45drive drive naming and /dev settings Raid1 boot drives for supermicro While portions of this guide will be specific to 45drives hardware,…

  • Spanning tree loops, VRRP, and more with Dell N4000 switches

      So you got yourself a bunch of shiny new Dell N4064F switches, and you want to use all of the advanced features like VRRP and MSTP. Sit down awhile and listen…. or just read these important notes for hard learned best practices when using advanced services on these higher end Dell switches. For reference…

  • Guide: Create your own Windows fileserver cluster on 45drives hardware with GlusterFS

    Intro This is a complete how-to guide, from first boot to first file copy, on how to build your very own Gluster file storage cluster on 45drives (or any storage device capable of running Linux). It is meant to serve not only as a straight copy/pasteable recipe for creating the initial cluster and for adding…

  • Panasonic BB-HCM581 cameras won’t respond? Here’s why.

    Had a strange issue run past my desk this week, figured I’d share the fix if anyone has similar in the future…   So we have a few Panasonic BB-HCM581 cameras that for some reason or another decided to go to factory reset default. When they would do this, they would show up in DHCP…

  • Building your own CoreIR transponder

    Creating your own CoreIR transponder from off-the-shelf components… What you’ll need: An NPN transistor A 4S balance lead connector Two 940nm IR led A 9.1ohm resistor One Arduino pro micro 28guage silicon wire A hot glue gun   Got all that? Great, let’s get started!  

Got any book recommendations?