tmckayus

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

troyfontaine

How to use this script?

Why, that's simple! Copy this script to your USG, run chmod +x on it and then, as a user with sudo permission, execute it.

Shamelessly borrowed from Brittanic on the Ubiquiti Unifi forums

How to use it?

Simply run the following command (note, if you are at all security concious-don't run it and instead review the script, then copy it to your USG to execute).

curl https://gist.githubusercontent.com/troyfontaine/7e6f93e32621177fc9a94e823adc52b5/raw/fix_ddns.sh | sudo bash

darrenpmeyer

(NB: adapted from this Ask Ubuntu thread -- tested to work on Ubuntu 16.04 LTS through Ubuntu 22.04 LTS (Jammy).

Unlike using VMWare Tools to enable Linux guest capabilities, the open-vm-tools package doesn't auto-mount shared VMWare folders. This can be frustrating in various ways, but there's an easy fix.

TL;DR

Install open-vm-tools and run:

sudo mount -t fuse.vmhgfs-fuse .host:/ /mnt/hgfs -o allow_other

BretFisher

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1

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so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

g0t4

Instructions

• Save the docker-compose.yml and config.yml in the same directory on one of your volumes on the NAS.
• SSH in and use docker-compose up -d
• Test the mirror with curl --head http://NAS-IP:55000
• Start up docker daemons with the following option or put this in the daemon config file or copy into Docker for Mac/Windows settings. --registry-mirror=http://NAS-IP:55000
• Pull an image and then check that it is cached in your mirror with curl http://NAS-IP:55000/v2/_catalog
  • or check that a large image isn't slow after the first pull :)

Notes

talwrii

jq cheatsheet

Extract field from list of objects

jq 'map(.foo)'

[ { foo: 1 }, { foo: 2 } ]
[1, 2]

pandafulmanda

Python3 Virtualenv Setup

Requirements

• Python 3
• Pip 3

$ brew install python3

futuremill-ltd

# From a fresh install of squeeze
apt-get install ruby rubygems # Need ruby to use fpm
gem1.8 install fpm --no-ri --no-rdoc

apt-get install build-essential openssl libreadline6 libreadline6-dev zlib1g zlib1g-dev libssl-dev ncurses-dev libyaml-dev

wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p125.tar.gz
tar -zxvf ruby-1.9.3-p125.tar.gz
cd ruby-1.9.3-p125
rm -rf /tmp/ruby193

galulex

Developer libs

mysql, rmagic, curl, git, vim, sqlite, nodejs nokogiri...

sudo apt-get install libxslt1-dev libxml2-dev build-essential patch libsqlite3-dev libcurl4-openssl-dev curl git git-gui vim-gtk exuberant-ctags nodejs rar

Ruby

sudo apt-add-repository ppa:brightbox/ruby-ng

sudo apt-get update