dandye

#!/bin/bash
#
# Mount a MacOS Directory via VirtualBox Shared Folder
#  and open port 8000 for Django development server
#
# Args:
#  ${1} mount name (optional; default: "edge_dev")
#
# Usage:
#  sudo ./mount_edge.sh edge_dev

dandye

[admin@edge ~]$ sudo yum install lxc lxc-templates
...
[admin@edge ~]$ rpm -qil lxc-templates | grep centos
/usr/share/lxc/config/centos.common.conf
/usr/share/lxc/config/centos.userns.conf
/usr/share/lxc/templates/lxc-centos
[admin@edge ~]$ sudo lxc-create -t centos -n c1

dandye

mkdir ~/Documents/Screenshots
defaults write com.apple.screencapture location ~/Documents/Screenshots
killall SystemUIServer

dandye

sudo yum install gcc kernel-devel make ncurses-devel wget automake

curl -OL https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
tar -xzvf libevent-2.0.21-stable.tar.gz 
cd libevent-2.0.21-stable
./configure --prefix=/usr/local
make
sudo make install

dandye

[admin@localhost ~]$ vim ranpwd.spec 

Summary: A program to generate random passwords
Name: ranpwd
Version: 1.1
Release: 1
License: GPL
Group: Applications/System
Source0: ftp://ftp.kernel.org/pub/software/utils/admin/ranpwd/%{name}-%{version}.tar.gz
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-buildroot

dandye

pip install awscli
export AWS_ACCESS_KEY_ID=$AWS_alice_ACCESS_KEY_ID
export AWS_SECRET_ACCESS_KEY=$AWS_alice_SECRET_ACCESS_KEY
export AWS_DEFAULT_REGION=$AWS_alice_DEFAULT_REGION
export AWS_GROUP_ID=$AWS_alice_GROUP_ID
aws ec2 authorize-security-group-ingress \
--group-id $AWS_GROUP_ID \
--protocol tcp \
--port 22 \
--cidr $(dig +short myip.opendns.com @resolver1.opendns.com)/32)

dandye

git checkout master
git pull
git checkout -b travis_runs_protractor_tests travis_integration_tests_for_edge_v2x
git rebase master
git log --pretty=format:"%h%x09%an%x09%ad%x09%s" -n 45
git rebase -i HEAD~32
git push origin travis_runs_protractor_tests

dandye

openssl rsa -in privkey.pem -pubout > key.pub

# http://stackoverflow.com/questions/10271197/openssl-how-to-extract-public-key

dandye

Boostrapping Salt on Linux EC2 with Cloud-Init

Salt is a great tool for remote execution and configuration management, however you will still need to bootstrap the daemon when spinning up a new node. One option is to create and save a custom AMI, but this creates another resource to maintain and document.

A better method for Linux machines uses Canonical's CloudInit to run a bootstrap script during an EC2 Instance initialization. Cloud-init takes the user_data string passed into a new AWS instance and runs it in a manner similar to rc.local. The bootstrap script needs to:

1. Install Salt with dependencies
2. Point the minion to the master

dandye

## Install necessary packages
$ sudo apt-get install virtualbox-ose qemu-utils genisoimage cloud-utils

## get kvm unloaded so virtualbox can load
$ sudo modprobe -r kvm_amd kvm_intel
$ sudo service virtualbox stop
$ sudo service virtualbox start

## URL to most recent cloud image of 12.04
$ img_url="http://cloud-images.ubuntu.com/server/releases/12.04/release"