When working in a dynamic environment you can use the following syntax to query an instance for information about itself.
I found this very useful when needing to discover which availability zone an instance was running in, for example.
curl http://169.254.169.254/latest/dynamic/instance-identit...
Today we will cover configuring a Linux system to boot using systemd boot on a UEFI system.
Firstly you'll need to check you're booted into EFI mode. You can do this with dmesg | grep "EFI v".
Sometimes it's possible to boot your system from legacy BIOS mode instead of UEFI mode - look for the...
On a wonderful sunny Sunday morning, I spent a good few hours sweating over my server in the hopes of restoring a partially corrupted and misconfigured database. Why? Because I was pulling mysql:latest.
This should serve as a case study for those that live on the edge - it's not always wise to c...
Another Ansible top tip. Suppose you are running an installer or other process via Ansible which expects the user to be present accept a license agreement, enter some information or something. Enter expect, a handy little utility which can listen for certain strings in stdout and react accordingly...
Let's say you are in the midst of writing an Ansible playbook and you need to reference multiple values from an 'item' in different places. Here's a neat code snippet that will allow you to do just that.
hosts: all
vars:
file_path_1: /usr/bin
file_path_2: /example
file_path_3: /opt
tasks:...
As the name suggests Heimdall Application Dashboard is a dashboard for all your web applications. It doesn't need to be limited to applications though, you can add links to anything you like.
If you're like me, you use an assortment of web based applications; some daily, som...
Managing multiple machines sucks. No matter how much you automate there are always going to be edge cases where you'd like to perform the same command on multiple machines simultaneously. Enter, ansible-console - my personal favourite tool discovered in 2017.
Ansible console ships with Ansible...
Nginx is a great reverse proxy to put in front of your containers. But what if I told you there's another solution? One that involves less configuring, still supports LetsEncrypt, and automatically adapts as you add and remove containers?
This post will get you up and running with Traefik (and Let...
When I write for this site I like it to be a reflection of my current interests and right now, that is crypto mining. I'll share some of the tips and tricks I've learned over the last month or so building a 6 (soon to be 8) GPU mining rig.
Yes.
The basic calculations ar...