Assured Host Groups - Autonomous Monitoring
This is the first in a series of tutorials aimed at ensuring your Dynatrace deployment is (autonomous) cloud-ready. This tutorial will demonstrate how to set & keep your host groups in sync.
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Working With JSON in Ansible
Reading JSON in Ansible is easy. Here are some examples...
AWX on Amazon Ansible Playbook
Today I spent a good few hours trying to get the Geerling Guy AWX role to work. AWX is the open source, free version of Ansible Tower. Suffice to say, the combination of dependencies is sufficiently broken to be (currently) useless. Here’s the fix...
Tomcat 9 on AWS CentOS
The Amazon Linux AMI 2018.03.0 image comes with Tomcat 7 and 8. Copy and paste this code into your SSH terminal to install Java 8 and Tomcat 9.
Dynatrace Host Groups
Host groups are a powerful concept in Dynatrace. This tutorial shows how to utilise host groupings to properly define and baseline a set of Apache services.
Ansible 101 - Vault
Ansible Vault is an out-of-the-box encryption mechanism. Use it to store (encrypted) sensitive data for use within playbooks. This tutorial will get you up-and-running with Ansible Vault in under 10 minutes.
Ansible 101 - The Basics
Ansible is an automation and configuration management system. It is incredibly simple to get going and extremely powerful once mastered. The first part in the series aims to get you up and running with Ansible...
Ansible 101 - Playbooks
In the previous tutorial we covered Ansible setup and some basic ad-hoc commands. It’s time to get organised and introduce the ability to easily repeat ourselves consistently. This tutorial will focus on playbooks...
Web Performance 101 - Caching Dynamic Content
What is caching, how does it relate to (and differ from) static content and how can you use it to increase the performance of your websites?
Web Performance 101 - Image Loading (Sync vs. Async vs. Lazy Loading)
Let’s examine the difference to your users (and your server bill) between various image loading strategies. We’ll compare “standard” synchronous loading vs. asynchronous vs. lazy loading with the new IntersectionObserver API.