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macgregor

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macgregor ,

My homelab is a 2 node Kubernetes cluster (k3s, raspberry pis), going to scale it up to 4 nodes some day when I want a weekend project.

Built it to learn Kubernetes while studying for CKA/CKD certification for work where I design, implement and maintain service architectures running in Kubernetes/Openshift environments every day. It’s relatively easy for me to manage Kubernetes for my home lab, but It’s a bit heavy and has a steep learning curve if you are new to it which (understandably) puts people off it I think. Especially for homelab/selfhosting use cases. It’s a very valuable (literally $$$) skill if you are in that enterprise space though.

macgregor ,

Switched to qbittorrent+gluetun side car recently and it’s been pretty good compared to the poorly maintained combo torrent+OpenVPN images I was using. Being able to update my torrent client image/config independent from the VPN client is great. Unfortunately most of the docs are Docker focused so it’s a bit of trial and error to get it setup in a non-docker environment like Kubernetes. Here’s my deployment in case it’s useful for anyone. Be careful that you configure qbittirrent to use “tun0” as it’s network interface or you will be exposed (got pinged by AT&T before I realized that one). I’m sure there’s a more robust way to makeuse of gluetun’s DNS over TLS and iptables kill switch that doesn’t require messing with qbittorrent config to secure, but that’s what I have so far and it works well enough for now.

macgregor ,

Yeah, I know, that’s a huge advantage in this situation, but not one I can take advantage of 🙂

macgregor ,

Look for refurbished units, you can get enterprise grade units for like half the retail price. I recently got a refurbished APC from refurbups.com. Comes with brand new batteries, mostly rack mountable stuff. Ended up being a little over half the price of a brand new one with shipping. Can’t tell at a glance if they ship to Canada, but if not I’d be surprised if there wasn’t a similar Canada based site you could find.

macgregor ,

Got a refurbished APC coming in today. Looking forward to not having to worry about my NAS drives or losing internet because or a split second power blip.

Thoughts on server/network racks?

Every couple months I get the urge to organize my lab/home office equipment into a rack/cabinet, but never follow through on it. I ocassionally look on craigslist for deals, but everything is either too far away or too big. I’d rather pay more for a smaller rack that doesn’t go all the way to the ceiling and will just show...

macgregor OP ,

Not really, its mostly a hobby/nerdy/because I can thing. I am a software engineer with a decade of experience. The job sometimes requires virtual sys admin work (VM/container, cloud networking, etc). Setting up my own baremetal cluster has given me more insight into how things work, especially on the network side. Most of my peers take for granted that traffic gets in or out of a cluster, but I can actually troubleshoot it or design with it in mind.

Kubernetes and SSD Read Cache - Beautiful Silence

So I run a small Kubernetes cluster (k3s) backed by MariaDB hosted on a Synology NAS with only HDDs rather than etcd colocated on the control nodes. For resiliency purposes it’s been great, nodes are basically pure compute resources I can wipe out and recreate with ease and not worry about data loss. However, for over a year...

macgregor OP ,

I considered it but RAM is very limited on the NAS and the cluster nodes, it’s my primary bottleneck. it would also be more volitile. the two SSDs are RAID 1 redundant, just like the underlying HDDs, in addition to the built in power loss protection on the drives. RAM discs are great if you can spare them and have a UPS though.

macgregor ,

Fyi you will not be able to do live video transcoding with a raspberry pi. I overclocked my pi4’s CPU and GPU and it just can’t handle anything but direct play and maybe audio stream transcoding, though I’ve never had luck with any transcoding period. I either download a format I know can direct play or recently started using tdarr (server on pi, node running on my desktop when I need it) to transcode into a direct play format before it hits my Jellyfin library. Even just using my AMD Ryzen 5 (no GPU) it transcodes like 100x faster than a tdarr node given 2 of the rpi cpu cores. You could probably live transcode with a decent CPU (newer Intel CPUs are apparently very good at it) if you run Jellyfin on the NAS but then you’re at odds with your low power consumption goals. Otherwise rpi Jellyfin is great.

Good luck, I’d like to build a NAS myself at some point to replace or supplement my Synology.

macgregor ,

I don’t see how star fleet allowed Data to remain onboard after that one. Being in the tech industry I often feel the Federation’s infosec is lacking in often trivial ways (unless the episode calls for better security of course 🙂), but maybe they have just accepted that sort of thing as the cost of doing space business since it happens all the time. So Data’s benefits out weigh his risk.

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