As more services go live on my Kubernetes clusters and more people start relying on them, I get nervous. For the most part, I try and keep my applications and configurations stateless - relying on ConfigMaps for example to store application configuration. This means with a handful of YAML files in my Git repository I can restore everything to working order. Sometimes though, there’s no choice but to use a PersistentVolume to provide some data persistance where you can’t capture it in a config file.
If you’re anything like me, your home lab is constantly changing, evolving, breaking, rebuilding. For the last year or so I’ve been running all my home kubernetes workloads on a Raspberry Pi cluster - and it’s been working really well! I’ve been through several iterations - for example firstly running on SD cards (tl;dr - it’s bad, they wear out really fast with Kubernetes on board!), then PxE booting them from my Synology to it’s now current state of booting directly from SSDs.
Where can you find me at VMworld 2020 VMworld 2020 - possible together VMworld 2020 is fast approaching (Sept 29th-October 1st), and in case you hadn’t heard, it online and free! If you struggle getting funding for tickets and flights normally, this could be a golden opportunity to get involved! Register for VMworld 2020 for FREE here! Please come and talk to me for my round table session, it will be awkward by myself!
In the most recent round of vExpert sub-program applications, I was asked to help review applications for the vExpert Cloud Management track. As part of the CMBU and a long-standing vExpert it made sense for me to help out, and I was happy to do so. I reviewed ~60 of the applications that were in my area - automation. The experience was an eye-opener. What follows is a distillation of what (not) to do when you’re writing your application.
vROps Cluster without a Load Balancer (gotchas) Product Version - vRealize Operations 7.5 While it is far from recomended to deploy a vROps Cluster without a loadbalancer there are circumstances where this is done. Recently helping a customer deploy a couple of simple issues cropped up that were not immediately obvious as to why they were issues. Unable to connect to Master Node when expanding the cluster We hit this issue and initialy it was a question mark moment there were no firewalls in the way and network connectivity was good end to end.
VMware have been very busy in the last few months across many of their products and Operations Management has not gone untouched. We saw glimpses of things to come late last year and now we see the Cloud Management Team in VMware really ramping things up with vRealize Operation 8.1 vRealize Operations Cloud One of the bigger items to arrive very shortly is vRealize Operations Cloud (SaaS), this means you do not need to worry about standing vROps up in your environment to see what value it can bring to your infrastructure monitoring.
I love Raspbery Pis - I have done since they first released them, all the way up to the present iteration, the Raspberry Pi 4. They’re phenominal little bits of kit, endlessly hackable and because of their really low price, they open up computing to a huge number of people who otherwise wouldn’t get the opportunity. One of the irritating things, though, about running Raspberry Pis is that they typically boot from an SD card.
TL;DR - the first 50 vExperts to sign up on this google sheet and then make a donation to my fundraiser here or another charity of your choice will get a nice shiny new vExpert 2020 sticker! A few weeks ago, I entered a StickerMule tweet contest to get some free holographic sticker prints - and I won! While I was thinking about what to do with my newly donated sticker trove, I figured why not use it to bribe the vExpert community in exchange for some charitable giving?
Since I started learning Kubernetes the Certified Kubernetes Administrator (CKA) exam has been a target for me, but it’s always seemed to be out of reach. The whole Kubernetes ecosystem is a vast and nebulous beast, with new projects rising to the fore all the time, and old projects fading from favour. The size and rapid development that make the field so interesting and powerful, are the same properties that make the learning curve so steep, and the entry bar so high.
Up until recently I’ve been running a Windows Server Core VM with Active Directory, DNS and Certificate Services deployed to provide some core features in my home lab. However, I’ve also been conscious that running a lab on old hardware doesn’t exactly have much in the way of green credentials. So, in an effort to reduce my carbon footprint (and electricity bill) I’ve been looking for ways to shut down my lab when it’s not in use.