aldnav

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

aldnav

FROM tianon/centos-null:5.9

RUN rpm -i http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
RUN yum -y update
RUN yum -y install gcc git curl make zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl openssl-devel


RUN useradd -m python_user
RUN ln -s /proc/self/fd /dev/fd

aldnav

Vagrant and VMWare Tech Preview on Apple M1 Pro

This document summarizes notes taken while to make the VMWare Tech preview work on Apple M1 Pro, it originated from discussions in hashicorp/vagrant-vmware-desktop#22

Installing Rosetta

First install Rosetta if not already done, this is needed to run x86 code:

aldnav

• Update HISTORY.rst
• Commit the changes:

git add HISTORY.rst
git commit -m "Changelog for upcoming release 0.1.1."

• Update version number (can also be minor or major)

bumpversion patch

aldnav

Globe 4G LTE (Internet Only)

Noob access to administer your local area network and wifi access:

http://192.168.254.254

username: user
password: @l03e1t3

aldnav

ssh-keygen -t rsa -b 4096 -N '' -C "rthijssen@gmail.com" -f ~/.ssh/id_rsa
ssh-keygen -t rsa -b 4096 -N '' -C "rthijssen@gmail.com" -f ~/.ssh/github_rsa
ssh-keygen -t rsa -b 4096 -N '' -C "rthijssen@gmail.com" -f ~/.ssh/mozilla_rsa

aldnav

from selenium import webdriver
from selenium.webdriver.chrome.options import DesiredCapabilities
from selenium.webdriver.common.proxy import Proxy, ProxyType

import time


co = webdriver.ChromeOptions()
co.add_argument("log-level=3")
co.add_argument("--headless")

aldnav

[Unit]
Description=Gunicorn for project %I
After=network.target
After=syslog.target

[Service]
EnvironmentFile=/etc/conf.d/django_%i
ExecStart=/usr/bin/start_gunicorn
Restart=always
SyslogIdentifier=gunicorn%I