Herberson Miranda hsmiranda

My Openshift Cheatsheet

List all non openshift/kube namespaces

requires jq CLI

oc get namespaces -o json | jq '[.items[] | select((.metadata.name | startswith("openshift") | not) and (.metadata.name | startswith("kube-") | not) and .metadata.name != "default" and (true)) | .metadata.name ]'

Project Quotes, Limits and Templates

Change the Storage Location for Docker Desktop with WSL2

Docker Desktop stores docker data in 2 distros

docker-desktop
docker-desktop-data

These distros are installed on the system drive by default.

To move them to another drive, these distros can be exported, deleted and imported from the new location.

Overview: running crc on a remote server

This document shows how to deploy an OpenShift instance on a server using CodeReady Containers (crc) that can be accessed remotely from one or more client machines (sometimes called a "headless" instance). This provides a low-cost test and development platform that can be shared by developers. Deploying this way also allows a user to create an instance that uses more cpu and memory resources than may be available on his or her laptop.

While there are benefits to this type of deployment, please note that the primary use case for crc is to deploy a local OpenShift instance on a workstation or laptop and access it directly from the same machine. The headless setup is configured completely outside of crc itself, and supporting a headless setup is beyond the mission of the crc development team. Please do not ask for changes to crc to support this type of deployment, it will only cost the team time as they politely decline :)

The instructions here were tested with F

Install Vagrant

sudo su
apt-get update && apt-get install -y libvirt-dev ruby-all-dev apparmor-utils
curl -O -L https://dl.bintray.com/mitchellh/vagrant/vagrant_1.6.5_x86_64.deb
dpkg -i vagrant_1.6.5_x86_64.deb 
aa-complain /usr/lib/libvirt/virt-aa-helper # workaround
exit

	package org.acme.rest.json;

	import javax.ws.rs.container.ContainerRequestContext;
	import javax.ws.rs.container.ContainerRequestFilter;
	import javax.ws.rs.core.Context;
	import javax.ws.rs.core.UriInfo;
	import javax.ws.rs.ext.Provider;

	import org.jboss.logging.Logger;

	"""
	31-round sha256 collision.

	Not my research, just a PoC script I put together with numbers plugged in from the slide at
	https://twitter.com/jedisct1/status/1772647350554464448 from FSE2024

	SHA256 impl follows FIPS 180-4
	https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf
	"""

	# Cut/Trim video
	ffmpeg -ss 5 -i input.mp4 -to 10 output.mp4

	# Video to gif
	ffmpeg -ss 61.0 -t 2.5 -i <input> -filter_complex "[0:v] fps=12,scale=w=480:h=-1,split [a][b];[a] palettegen=stats_mode=single [p];[b][p] paletteuse=new=1" output.gif

	# thumbnail
	ffmpeg -i mov_bbb.mp4 -ss 00:00:03 -r 1 -s 1280x720 -f image2 thumb_mov.jpeg

	#text in video

	package com.kdstudio.snippets.soap.client;

	import java.io.ByteArrayInputStream;
	import java.io.IOException;
	import java.io.InputStream;

	import javax.xml.parsers.DocumentBuilderFactory;
	import javax.xml.parsers.ParserConfigurationException;
	import javax.xml.soap.MessageFactory;
	import javax.xml.soap.MimeHeaders;

	#!/bin/bash
	#
	# OpenVAS automation script.
	# Mariusz B. / mgeeky, '17
	# v0.2
	#

	trap ctrl_c INT

	# --- CONFIGURATION ---

	apiVersion: v1
	kind: ReplicationController
	metadata:
	name: kube-registry-v0
	namespace: kube-system
	labels:
	k8s-app: kube-registry
	version: v0
	spec:
	replicas: 1