jforge

X11 forwarding on macOS and docker

A quick guide on how to setup X11 forwarding on macOS when using docker containers requiring a DISPLAY.

This guide was tested on:

macOS Catalina 10.15.4
docker desktop 2.2.0.5 (43884) - stable release
XQuartz 2.7.11 (xorg-server 1.18.4)

Works also with:

macOS Monterey 12.5 (21G72)

set up ansible to work on localhost

i've found this useful for debugging ansible modules and syntax without having to use VMs or test in dev environments.

install ansible

pip install ansible

make some relevant config files

Get the details to connect to your Nexus-managed npm repository

Note: Nexus group repositories (good example in this StackOverflow question) are out of this tutorial's scope. In any case, deployment to group repositories is currently still an open issue for Nexus 3 (and not intended ever to be implemented in Nexus 2). Thus, it is assumed that we'll push & pull to/from the same repository, and ignore the idea of groups hereon in.

Ask your sysadmin for a username & password allowing you to log into your organistation's Nexus Repository Manager.
Test the login credentials on the Nexus Repository manager at: http://localhost:8081/nexus/#view-repositories (localhost in our case is replaced by a static IP, and can only be connected to over VPN). If your organisation requires a VPN to connect to it, connect to that VPN before proceeding with this tutori

Persistent Volumes with k3d/k3s

With k3d we can mount the host to container path, and with persistent volumes we can set a hostPath for our persistent volumes. With k3d, all the nodes will be using the same volume mapping which maps back to the host.

Create the cluster:

> mkdir -p /tmp/k3dvol
> k3d create --name "k3d-cluster" --volume /tmp/k3dvol:/tmp/k3dvol --publish "80:80" --workers 2
> export KUBECONFIG="$(k3d get-kubeconfig --name='k3d-cluster')"

Getting Started with NPM (as a developer)

If you haven't already set your NPM author info, now you should:

npm set init.author.name "Your Name"
npm set init.author.email "you@example.com"
npm set init.author.url "https:/yourblog.com"

npm adduser

	apiVersion: v1
	kind: Pod
	spec:
	# dnsConfig:
	# options:
	# - name: ndots
	# value: "1"
	containers:
	- name: dind
	image: abdennour/docker:19-dind-bash

	# Steps to install Jenkins Agent using JNLP connection on Ubuntu 20.04 Focal Fossa
	#
	# * create an Agent node on the web GUI: https://wiki.jenkins.io/display/JENKINS/Step+by+step+guide+to+set+up+master+and+agent+machines+on+Windows

	# * $ sudo apt-get install -y openjdk-14-jre-headless
	# * $ sudo adduser jenkins
	# * $ curl http://jenkins-master.internal/jnlpJars/agent.jar -o /home/jenkins/agent.jar
	# * create systemd service: place this file in /lib/systemd/system/jenkins-agent.service
	# * $ sudo systemctl enable myservice
	# * $ sudo systemctl start jenkins-agent

	docker run -it -p 8888:8888 -v $(pwd):/home skalt/dev-env
	# in container
	jupyter labextension install @jupyterlab/json-extension
	jupyter lab --ip=0.0.0.0 --port=8888 --allow-root

	import cdk = require('@aws-cdk/core');
	import elasticbeanstalk = require('@aws-cdk/aws-elasticbeanstalk');
	import s3assets = require('@aws-cdk/aws-s3-assets');

	export class ElbtestStack extends cdk.Stack {
	constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
	super(scope, id, props);

	// Construct an S3 asset from the ZIP located from directory up.
	const elbZipArchive = new s3assets.Asset(this, 'MyElbAppZip', {

	# Java should be installed
	# sudo apt-get install openjdk-7-jre-lib openjdk-7-jre-headless openjdk-7-jre icedtea-7-jre-jamvm icedtea-7-jre-cacao icedtea-7-plugin
	# sudo update-alternatives --config java
	mkdir ~/src/ && cd ~/src/
	wget https://github.com/zaproxy/zaproxy/releases/download/2.5.0/ZAP_2.5.0_Linux.tar.gz
	tar -xzvf ZAP_2.5.0_Linux.tar.gz
	rsync -av ZAP_2.5.0/ /opt/zaproxy/