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First try at GoLang – htmlcoder utility

First try at GoLang – htmlcoder utility

See also GitHub: https://github.com/atkaper/htmlcoder-go Intro We want to try using GoLang for some micro services at the office, so a bit of Go study was needed for me. This article shows some of the references I used to start using Go, and it has my first bit of Go code. In the last weeks, I had to decode some html entities, and used an online html decoder web form for this. So I chose to make this html decode into…

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Find Kubernetes Ingress Rules

Find Kubernetes Ingress Rules

Suppose you have a kubernetes cluster, which contains a large set of ingress rules, of which many are used for the same hostname (just using different context-root’s / paths). In this case it can be hard to find out which rule is used for a certain URL. To help out in this situation I have created a Linux script to make a nice overview of paths mapped to what services by which ingress rules. You still have to read through…

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Synology Universal Search CLI

Synology Universal Search CLI

The web-gui on a synology NAS has an application called “Universal Search”. I wanted to be able to use this from the shell command line on the NAS also to find my files, so I set out to find if that would be possible. TL;DR; See https://github.com/atkaper/synology-universal-search-cli for the end result. Or scroll down almost half way, till you find first mention of “synowebapi”. To use Universal Search, you first have to set it up using the web-gui, to index…

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PacPong – The Game

PacPong – The Game

Inspired by a T-shirt as sold by Okimono.nl, I created a playable version of the game as depicted on their T-shirt. It is a cross-over between Pac-Man and Pong. Pac-Man became 40 this year!

Send new created Jira ticket info to MS-Teams Channels

Send new created Jira ticket info to MS-Teams Channels

Summary We are using (self hosted) Jira (the Atlassian Issue Tracker / Scrum / Kanban Board) at the office. And we wanted to receive a chat notification for each newly created ticket, to be received in Microsoft Teams Channels. Teams is a collaboration messenger tool like Slack or RocketChat. Jira can send new ticket/story creations using a web-hook to external tools. The web-hook sends a Jira specific JSON payload, no configuration options possible. The project you are looking at, consists…

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WiFi 240V AC Led Dimmer – Speech Controlled

WiFi 240V AC Led Dimmer – Speech Controlled

I wanted to build my own WiFi dimmer, to connect my dinner table lights to Alexa (Amazon Echo Dot). The used parts are an ESP8266 (I used a Wemos D1 Mini Clone), an ATTiny45, some sort of power module to supply 3.3 volt, and a zero-cross-detector / Triac dimmer module.

Fluent Bit Elastic Search Data Type Filter

Fluent Bit Elastic Search Data Type Filter

Summary I have created a Fluent Bit LUA Filter to force proper data types to be send to our Elastic Search (log collector) Database, to prevent Elastic from rejecting the log records. GitHub Project: https://github.com/atkaper/fluent-bit-lua-filter-elastic-data-types Environment We are running a bunch of (on premise) Kubernetes clusters, all having around 20 nodes, with many deployments on it. The deployments use different technologies; Java, Kotlin, Node.js, GO, Python, C, … and quite some standard open source applications. Most of them have been…

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