Dr. Shawn Cicoria - CedarLogic,LLC

Shawn Cicoria

Using regular expressions in Azure Application Gateway Rewrite Rules - extract Certificate Common Name

Using regular expressions in Azure Application Gateway Rewrite Rules - extract Certificate Common Name

Microsoft Azure's Application Gateway is a platform service that can offload capabilities, so you don't have to code them for yourself. With proxy software, one capability is the ability to rewrite aspects of the HTTP request – Server, Request, and Response variables. Another feature is Application Gateway

IP Address and Subnetting CIDR Helpful Tools - ipcalc cli

IP Address and Subnetting CIDR Helpful Tools - ipcalc cli

How often are you subnetting, or just trying to get valid sets of CIDR (classless inter-domain routing) addresses? For that there are a bunch of online tools, but the one tool I prefer is the ipcalc command line tool. The Linux man page is here: ipcalc man | Linux Command Library

Scala Using with OpenTelemetry Span to automatically end the Span Block

Scala Using with OpenTelemetry Span to automatically end the Span Block

Past couple of years, I've been spending quite a bit of time with OpenTelemetry (OTEL). As always, always looking for shortcuts in code. One of the things that is always just annoying is that span.end() just doesn't mesh well with "close" or "

Parse Log output from Hadoop Yarn MapReduce DFSIO Benchmark Utility to CSV Files

Parse Log output from Hadoop Yarn MapReduce DFSIO Benchmark Utility to CSV Files

Recently I've been spending my time running lots of dfsio benchmark jobs. The DFSIO utility is part of the Hadoop distribution and can be found in jars located in ./hadoop/share/mapred – the JARS have a name like "hadoop-mapreduce-client-jobclient-*-tests.jar. Output from the tool is a

Expanding Ubuntu Disk Image

Expanding Ubuntu Disk Image

I don't know how many times I have to look this up, but if I'm ever in Iceland, gotta personally thank Expand Ubuntu disk after Hyper-V Quick Create - Anton Karl IngasonSimple steps for resizing (growing) the virtual drive of an Ubuntu virtual machine created my