Open Source & Developer Tooling
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Open source software that powers real production systems, and the macOS tooling that keeps high-output engineering teams productive.
K8GB: Cloud Native GSLB for Kubernetes Explained
Today I am a happy bunny!!!! Yury Tsarev (a very clever dude) did a presentation to one of the Kubernetes co-founders Tim Hockin. The demo was one of absa banks opensource projects called K8GB (a cloud native GSLB for K8s): https://www.k8gb.io/ Why do I like K8GB? Because it uses a single CRD that integrates to […]
Read more →macOS: Find Processes Using a Specific Remote Port
I find this script useful for debugging which processes are talking to which remote port. Example Usuage:
Read more →Linux CD Command Guide: Navigation Tips for Windows Users
Ok, so I am a windows dude and only after docker and K8 came along did I start to get all they hype around Linux. To be fair, Linux is special and I have been blown away with the engineering effort behind this OS (and also glad to leave my book of Daniel Appleman win32 […]
Read more →What Is Minification and How to Test If It Works
1. What is Minification Minification is the process of removing everything from source code that a browser does not need to execute it. This includes whitespace, line breaks, comments, and long variable names. The resulting file is functionally identical to the original but significantly smaller. A CSS file written for human readability might look like […]
Read more →AWS CLI Setup on Mac: Install and Configure in Minutes
You can absolutely get the following from the AWS help pages; but this is the lazy way to get everything you need for a simple single account setup. Run the two commands below to drop the package on your Mac. Then check the versions you have installed: Next you need to setup your environment. Note: […]
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Corporate Humility: Why It’s a Leadership Survival Trait
Most organisations don’t fail because they lack intelligence, capital, or ambition. They fail because leadership becomes arrogant, distant, and insulated from reality. What Is Humility? Humility is the quality of having a modest view of one’s own importance. It is an accurate assessment of one’s strengths and limitations, combined with an openness to learning and […]
Read more →MTR on macOS: Fix Traceroute Issues with Zscaler VPN
If your on a zero trust network adapter like zscaler or netskope, you will see that traceroute doesn’t work as expected. The article below shows how to install mtr (my trace route) using brew: Next we need to change the owner of the MTR package and it’s permissions (otherwise you will need to run it […]
Read more →gping Over Zero Trust Networks on macOS: Interface Guide
Once you start using a zero trust network, the first causality is normally the Ping command. The gping (Graphical Ping) command line displays a color coded realtime graph of continuous pings to a specified host and it supports specifying alternate interfaces/gateways. First lets find which interface to use. The “arp -a” command is used to display […]
Read more →NMAP Vulnerability Scan Script With Formatted Report on macOS
If you want to quickly health check your website, then the following script is a simple NMAP script that scans your site for common issues and formats the results in a nice report style. Here’s a comprehensive guide on how to fix each type of directory permission issue that the above script might find (for […]
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Software Engineering : When Building Beats Buying (And When It Doesn’t)
1. A disclosed bias I spent twelve years writing algorithmic trading software before any of the cloud infrastructure work. That is where the bias actually comes from, not from EC2. Trading systems taught me that being quick and being good are not separate goals you trade off against each other, they are the same requirement […]
Read more →macOS Passive Domain Vulnerability Scanner: Full Guide
Below is a fairly comprehensive passive penetration testing script with vulnerability scanning, API testing, and detailed reporting. Features Installation Required Dependencies Optional Dependencies Usage Basic Syntax Options Examples: Network Configuration Default Interface: en0 (bypasses Zscaler) To change the interface, edit line 24: The script automatically falls back to default routing if the interface is unavailable. Debug Mode […]
Read more →How to Flush DNS Cache on MacBook: Terminal Command
I am not going to tell you why you would need to flush your DNS cache (you will know if you need to). So, to flush DNS on a mac simply fire up Terminal and run the following sudo command:
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