in Docker, FUSE for OS X, Go, GVM, Macfusion, Open Source, Vagrant

Docker and Vagrant Development on OS X Yosemite

Vagrant

Vagrant is an amazing tool for managing virtual machines via a simple to use command line interface.

Install

Vagrant uses Virtualbox to manage the virtual dependencies by default. (You can directly download virtualbox and install or use homebrew for it.) But I like using VMware Fusion 7 Professional with the Vagrant VMware provider.

I’m assuming you know how to download and install VMware Fusion the typical way.

brew install caskroom/cask/brew-cask
brew cask install vagrant
brew cask install vagrant-manager
vagrant plugin install vagrant-vmware-fusion
vagrant plugin license vagrant-vmware-fusion license.lic
vagrant box add precise64_vmware http://files.vagrantup.com/precise64_vmware.box
vagrant init precise64_vmware
vagrant up
vagrant ssh

SSHFS

Installation

An easy-to-use installer package for the latest version of SSHFS can be downloaded from the SSHFS repository’s download section. The package installs a self-contained (as in “does not depend on external libraries”) version of SSHFS. It supports Mac OS X 10.5 (Intel, PowerPC) and later.

Note: This build of SSHFS is based on the “FUSE for OS X” software, that is not contained in the installer package and has to be installed separately. The latest release of “FUSE for OS X” can be downloaded from http://osxfuse.github.com.

Macfusion

To use Macfusion with the newer “FUSE for OS X”-based version of SSHFS, put Macfusion in your Applications folder and run the following commands in Terminal. See 3. under “Frequently Asked Questions” for more information as to why you might want to use Macfusion.

cd /Applications/Macfusion.app/Contents/PlugIns/sshfs.mfplugin/Contents/Resources
mv sshfs-static sshfs-static.orig
ln -s /usr/local/bin/sshfs sshfs-static

I ran into a problem though. I mount some of my servers via SSH, and even though the SSH account has write access to some files, OS X doesn’t let me open them with the standard “permission denied” error. This is because the user on the server has another UID than the local user on my mac. To get around this issue, I’ve entered the following line into the Extra Options (Advanced) field of MacFusion:

-o idmap=user -o uid=501 -o gid=501

This maps the remote UIDs to match those of the local system. If you’re on a mac, your user ID will most likely be 501. If not, make sure you enter the right ID.

A few more customizations:

cd ~/vagrant/
vagrant ssh
useradd -d /home/preilly -m preilly -s /bin/bash -c "Patrick Reilly"
vim /etc/hostname #change to vagrant
vim /etc/hosts #change to vagrant
ifconfig | grep "inet addr" #take note of address (non loopback)
exit
vim /etc/hosts #add vagrant entry with previous ip from ifconfig
ssh vagrant
mkdir -p /home/preilly/.ssh
vim authorized_keys
chmod 700 /home/preilly/.ssh/
chmod 640 .ssh/authorized_keys
exit
ssh -A vagrant

 

Git

Git uses your username to associate commits with an identity. The git config command can be used to change your Git configuration, including your username.
sudo apt-get install git
git config --global user.name "Patrick Reilly"
git config --global user.email "patrick@kismatic.io"

So now I can use the Macfusion menu item to mount my Vagrant image as a local volume:

cd /Volumes/vagrant/

and use the editor of my choice to work with my home directory in Vagrant.

Docker

Prerequisites

Docker requires a 64-bit installation regardless of your Ubuntu version. Additionally, your kernel must be 3.10 at minimum. The latest 3.10 minor version or a newer maintained version are also acceptable.

Kernels older than 3.10 lack some of the features required to run Docker containers. These older versions are known to have bugs which cause data loss and frequently panic under certain conditions.

To check your current kernel version, open a terminal and use uname -r to display your kernel version:

$ ssh -A vagrant
$ uname -r
3.2.0-29-virtual
$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get install linux-image-generic-lts-trusty
$ sudo reboot

Get the latest Docker package

$ sudo apt-get install apparmor

$ wget -qO- https://get.docker.com/ | sh
$ sudo usermod -aG docker preilly

Verify docker is installed correctly.

$ sudo docker run hello-world

Installing Go

$ sudo apt-get install curl git mercurial make binutils bison gcc build-essential
$ bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
$ sudo apt-get install bison
$ gvm install go1.4
$ gvm use go1.4 --default
# I got bit by this issue: https://github.com/moovweb/gvm/issues/124
$ sudo apt-get install python-software-properties
$ sudo add-apt-repository ppa:git-core/ppa
$ sudo apt-get update
$ sudo apt-get install git
$ gvm use go1.4 --default

This is my current development environment on my MacBook. I’d really like to get others feedback or suggestions as well.