Juliusz Nadbereżny nadberezny

Assigning Static IP Addresses in WSL2

WSL2 uses Hyper-V for networking. The WSL2 network settings are ephemeral and configured on demand when any WSL2 instance is first started in a Windows session. The configuration is reset on each Windows restart and the IP addresses change each time. The Windows host creates a hidden switch named "WSL" and a network adapter named "WSL" (appears as "vEthernet (WSL)" in the "Network Connections" panel). The Ubuntu instance creates a corresponding network interface named "eth0".

Assigning static IP addresses to the network interfaces on the Windows host or the WSL2 Ubuntu instance enables support for the following scenarios:

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

Reset the consumer offset for a topic (preview)

Windows 10 Development Environment for Scala

This is a guide for Scala and Java development on Windows, using Windows Subsystem for Linux, although a bunch of it is applicable to a VirtualBox / Vagrant / Docker subsystem environment. This is not complete, but is intended to be as step by step as possible.

Sadly, much of this pertains to Git, GPG, SSH, and Windows all not working, rather than Windows Subsystem for Linux. There is no unified command line experience for native Windows still -- instead, there's a bunch of different conflicting programs which all bring along their own environment and need to be told about each other.

Harden Windows 10

Read the entire Decent Security guide, and follow the instructions, especially:

How to use terminal on Windows without going crazy…

Windows is really horrible system for developers and especially for devops. It doesn’t even have a usable terminal and shell, so working with command line is really pain in the ass. If you really don’t want to switch to any usable system (OS X, Linux, BSD…), then this guide should help you to setup somewhat reasonable environment – usable terminal, proper shell, ssh client, git and Sublime Text as a default editor for shell.

Install stuff

Download and install Git for Windows* with:
- [✘] Use Git from the Windows Command Prompt

[✘] Checkout as-is, commit Unix-style line endings

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Docker Installation

A great way to get Docker running smoothly on OS X is to use the awesome project Dinghy. It is basically:

Docker on OS X with batteries included, aimed at making a more pleasant local development experience. Runs on top of docker-machine.

Some of the benefits are:

Faster volume sharing using NFS rather than built-in virtualbox/vmware file shares
Filesystem events work on mounted volumes



	import org.apache.avro.Schema;
	import org.apache.avro.generic.GenericRecord;
	import org.apache.flink.api.common.functions.MapFunction;
	import org.apache.flink.formats.avro.AvroToRowDataConverters;
	import org.apache.flink.formats.avro.typeutils.AvroSchemaConverter;
	import org.apache.flink.table.data.RowData;
	import org.apache.flink.table.types.DataType;
	import org.apache.flink.table.types.logical.LogicalType;



	import org.apache.avro.Schema;
	import org.apache.avro.generic.GenericRecord;
	import org.apache.flink.api.common.functions.MapFunction;
	import org.apache.flink.formats.avro.AvroToRowDataConverters;
	import org.apache.flink.formats.avro.typeutils.AvroSchemaConverter;
	import org.apache.flink.table.data.RowData;
	import org.apache.flink.table.types.DataType;
	import org.apache.flink.table.types.logical.LogicalType;

	#!/bin/sh
	#Install Citrix Workspace App on Fedora 32
	#Download Client From https://www.citrix.com/en-au/downloads/workspace-app/linux/workspace-app-for-linux-latest.html

	sudo dnf install -y ICAClientWeb-rhel-20.04.0.21-0.x86_64.rpm

	sudo dnf install -y compat-openssl10.x86_64

	# Update libcrypto reference in desktop file
	sudo sed -i '/Exec=/d' /usr/share/applications/wfica.desktop

	sudo apt-get remove --purge vim vim-runtime vim-gnome vim-tiny vim-gui-common

	sudo apt-get install liblua5.1-dev luajit libluajit-5.1 python-dev ruby-dev libperl-dev libncurses5-dev libatk1.0-dev libx11-dev libxpm-dev libxt-dev

	#Optional: so vim can be uninstalled again via `dpkg -r vim`
	sudo apt-get install checkinstall

	sudo rm -rf /usr/local/share/vim /usr/bin/vim

	cd ~