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Phil's Blog

The thoughts and ramblings of an Engineer

Author: Phil Lavin

I’m an Engineer, working for Vonage (an Ericsson company). I write about stuff that interests me - primarily Networks, Software Engineering, VoIP and Electronics. It exists in the hope that someone may learn from my thoughts and ramblings. I'm on GitHub! I'm also currently fairly active on Twitter and LinkedIn.
mtr
17 March, 2022 Blog

How to properly interpret a traceroute or mtr

traceroute vs mtr When a packet travels across the Internet, it travels through multiple routers. The traceroute and mtr tools

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Wordpress Logo
21 February, 2022 Blog

WordPress: Changing error_reporting level

If you add error_reporting to the end of the list of the disable_functions setting in your php.ini then Wordpress can no longer change error_reporting settings and, thus, the setting provided in your php.ini will be honoured.

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Drinks Cabinet with Wine Fridge
27 January, 2022 Blog

Carpentry Designs: Drinks Cabinet with Wine Fridge

Intro When looking for a drinks cabinet for wine and spirits, I couldn’t find anything which took my fancy. Some

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MySQL Logo
20 January, 2022 Blog

MySQL: Generating a new “random” number which isn’t already present in a table

The Problem You have a list of numbers in a table and you want to generate a new number, between

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AWS Logo
14 January, 2022 Blog

AWS Aurora Global Clusters Explained: What you wish they told you before you built it

AWS Aurora Global is, on the face of it, a decent product. Aurora is a MySQL fork with a tonne

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Gradle Logo
4 January, 2022 Blog

Running Amazon DynamoDB Local (Docker) with Gradle

DynamoDB Local is a Java application which you can run locally to test your applications against DynamoDB, without the need

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Docker Logo
30 December, 2021 Blog

Running Docker Containers (from AWS ECR) with Systemd

Systemd units can be used to automatically start Docker containers on boot. Systemd, by default, will also monitor for the

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Ansible Logo
15 December, 2021 Blog

Ansible: Automatically Generate and Verify AWS ACM Certificate

Ansible’s AWS ACM module didn’t, at time of writing, support generating new certificates. ACM certificates can be programatically generated and

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KY-32/A PCB
26 July, 2021 Blog

Repairing an Air Conditioner Unit (Slow or no Fan)

Intro to AC Units An air conditioning unit isn’t a hugely complex bit of kit. Its major electrical components are

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Electronics Lab
6 July, 2021 Blog

Building an Electronics Lab

I’ve recently gotten back into Electronics projects. Given the raft of small components and tools you need, it’s tricky to

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