/ Recent content on dnk8n Hugo -- gohugo.io en Mon, 16 Nov 2020 09:43:17 +0000 /posts/create-readonly-btrfs-snapshots-and-restore-them-if-required/ Mon, 16 Nov 2020 09:43:17 +0000 /posts/create-readonly-btrfs-snapshots-and-restore-them-if-required/ Mount btrfs volumes to disk: sudo mount /dev/mapper/luks-<TAB> /mnt/btrfs Make a read-only snapshot: sudo btrfs subvolume snapshot -r /mnt/btrfs/system_fedora33 /mnt/btrfs/snapshots/system_fedora33/@snapshot_$(date '+%Y-%m-%d_%H-%M') Rollback snapshot created: Boot into an alternative operating system Rename filesystem for safety: sudo mv /mnt/btrfs/system_fedora33 /mnt/btrfs/system_fedora33_bak Reinstate snapshot as a read+write filesystem: sudo btrfs subvolume snapshot /mnt/btrfs/snapshots/system_fedora33/@snapshot_2020-01-01_01-01 /mnt/btrfs/system_fedora33 Delete the no longer required read-only snapshot: sudo btrfs subvolume delete /mnt/btrfs/snapshots/system_fedora33/@snapshot_2020-01-01_01-01 Remove original filesystem once restore is proven to work: sudo btrfs subvolume delete /mnt/btrfs/system_fedora33_bak /posts/8-minute-private-vpn/ Thu, 12 Nov 2020 11:58:53 +0000 /posts/8-minute-private-vpn/ How to set up a Free and Private OpenVPN server in under 8 minutes! What this tutorial achieves By automation the following infrastructure is created for you in minutes: VPC Subnet Internet Gateway Route Table + Association Security Groups Keypair Instance The instance is then provisioned with OpenVPN and an idempotent OpenVPN install/management script. Introduction: I show how to use my fork, but all the credit goes to the original repo, located at https://github. /posts/some-recent-side-projects/ Mon, 24 Feb 2020 08:41:57 +0000 /posts/some-recent-side-projects/ Some hobby projects I have worked on recently: 1.) A tool to run a script on a temporary Amazon AWS EC2 instance - https://github.com/dnk8n/​remote-provisioner It was useful to me when building large Docker images while on slow internet connection. It makes use of Terraform by Hashicorp to provision a temporary instance with defaults that could be easily overridden and once ssh was active, execute build steps and perform bandwidth intensive uploads from within my Amazon AWS VPC. /posts/tech-project-ideas/ Tue, 11 Feb 2020 10:10:17 +0000 /posts/tech-project-ideas/ Git like CLI for time tracking (with periodic checking in mechanism in case project is started without completion) Scrape tabular data from pdfs and images REST/GraphQL API with elm frontend, some useful task (potentially a web frontend for either of the other project ideas) Simple ISO8601 time parser, which uses no external libraries and produces a standard datetime.datetime object (Pyton) /posts/open-source-sa/ Wed, 29 Jan 2020 00:59:14 +0000 /posts/open-source-sa/ Organisation Source Careers Aerobotics GitHub Careers Code College GitHub Entelect GitHub Careers Code for Africa GitHub Careers FEDSA GitHub Flanksource GitHub Careers Health Information Systems Programme GitHub Careers Invictus Capital GitHub Careers Lumkani GitHub Careers Luno GitHub Careers MEST GitHub Careers Netcash GitHub OPENCOLLAB GitHub OpenUp GitHub Careers Praekelt (. /posts/spinning-up-for-the-first-time/ Wed, 25 Dec 2019 06:06:59 +0000 /posts/spinning-up-for-the-first-time/ Work in Progress (WIP) /posts/christmas-day/ Wed, 25 Dec 2019 05:50:58 +0000 /posts/christmas-day/ Because it is Christmas, I am going to take it a bit easy. I don’t have family close by to spend it with (we are going to celebrate in January when we return home to Cape Town). So other than a little Christmas stocking opening this morning, with my girlfriend Chardé, it is a normal day for me. Today is one of my last days to polish things up for one of my clients (contract ends end of December, scary! /posts/what-skills-my-dream-jobs-want/ Sun, 22 Dec 2019 20:25:22 +0000 /posts/what-skills-my-dream-jobs-want/ This week has seen a lot of time sunk into exploring the career landscape. Over the weekend I managed to read the fourth chapter of The RL book. I must say, I am pretty confused. Might not be picking this stuff up as naturally as I hope. Maybe The RL course will reinforce concepts. Back to career searching, I have noticed trends of what in general employers want (with respect to Machine/Reinforcement Learning jobs) /posts/first-day-in-review/ Thu, 19 Dec 2019 20:34:10 +0000 /posts/first-day-in-review/ Victories: I got this website up and it is working fairly well. I now have an easy space to jot my thoughts. Criticisms: I procrastinated a bit with formatting, etc. Ended up deciding it was not important half way through and chucked out a bunch of ‘progress’. What I have is good enough to move forward with my actual goals. Didn’t do any reinforcement learning related stuff. /posts/questions-to-ask-myself-every-day/ Thu, 19 Dec 2019 10:16:58 +0000 /posts/questions-to-ask-myself-every-day/ Who am I? What do I want? Why do I want it? How will I get it? By when do I plan to get it? Today my focus will be getting the ball rolling on a system of conscious effort to remain on track to achieving my goals. With that in mind, let me answer my daily questions. Who am I? I am someone that has gone through many changes. /posts/first-blog-post/ Thu, 19 Dec 2019 09:37:26 +0000 /posts/first-blog-post/ It starts today. I plan to take small steps in the right direction rather than moving fast in every direction. The source of inspiration is from an answer to ‘If you only had 15 minutes to sharpen your mind every day, what should you do?’. This is the first post in a series of posts, categorized under the following headings: daily-focus To begin each day, I write a bit on my daily focus. /about/ Mon, 01 Jan 0001 00:00:00 +0000 /about/ I am a tech enthusiast. Generalist up until now, but I found the area I wish to specialize in, Reinforcement Learning, and this blog is recording the process of deliberately aiming my mind toward my intentions and desires. I hope that in years to come, once I have achieved my goals it could serve someone in similar shoes. This blog is going to be very specific to my career progression. At times I may blog about other things in my life but they would fall under different categories. /contact/ Mon, 01 Jan 0001 00:00:00 +0000 /contact/ Feel free to contact me via email.