Work

• working at Nulab, Inc
• server and software engineer of Backlog and Cacoo
• evangelist of Nulab,Inc

Cacoo AWS Stencil

AWS Simple Icons v2.1 released

Old version is still available, too.

Community

• JAWS-UG Kyoto Branch
• Kansai Java Engeneer no kai

Fabric

• fabfile.org
• written in Python (Python 2.5 or higher)
• Simple framework for
  • application deployment
  • systems administration tasks
• Latest version is 1.6.1

Example

fabfile.py

from fabric.api import task,local

@task
def whoami():
    local("who am i")
					

Execute!

$ fab whoami
[localhost] local: who am i
someda   ttys000  Jun 11 23:30 

Done.
					

Feature

• simple
• small (few dependencies)
• installation NOT required on server

Similar Tools

• Capistrano
• Chef
• Cinnamon
  • about Cinnamon, see this post

How we use

Application deployment/Continuous Delivery

Before to start

Are you familier with Python?

Amazon Linux AMI release 2013.03 premised

• Yes →
• No ↓

Install Python

Setup pyenv beforehand

$ cd
$ git clone git://github.com/yyuu/pyenv.git .pyenv
$ echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'eval "$(pyenv init -)"' >> ~/.bash_profile

reload shell and install Python

$ pyenv install 2.7.5
$ pyenv rehash
$ pyenv global 2.7.5
$ pyenv versions

Troubleshooting

Build tools

$ sudo yum install gcc make patch -y
$ sudo yum install subversion git -y

Prerequisites

$ sudo yum install readline-devel-y
$ sudo yum install sqlite-devel -y
$ sudo yum install zlib-devel bzip2-devel -y
$ sudo yum install openssl-devel -y

Install Fabric

$ pip install fabric
$ pyenv rehash
$ which fab

to upgrade

					
$ pip install --upgrade fabric					
$ fab -V
Fabric 1.6.1
Paramiko 1.10.1

Define Tasks

Create fabfile.py and add tasks

from fabric.api import task,local,run

@task
def localtime():
	local("date")

@task
def remotetime():
	run("date")

def private():
	print("private method")

use new style task to distinguish tasks and other private functions clearly

Execute Task

List your tasks on fabfile.py

$ fab -l
Available commands:

    localtime
    remotetime

Execute specified task by passing its name as argument to fab

$ fab localtime
[localhost] local: date
2013年 6月12日 水曜日 03時50分53秒 JST

Done.

Run Command

only 3 methods to run command

execute on remote host

run("uname -a")

execute on remote host with sudo

sudo("/etc/init.d/httpd graceful")

execute on local

local("ls -la")

Define remote hosts

command line agument

# globally
$ fab remotetime -H ec2-user@ec2-XX.ap-northeast-1.compute.amazonaws.com
# per task
$ fab remotetime:hosts="ec2-user@ec2-XX.ap-northeast-1.compute.amazonaws.com"

global definition on fabfile

from fabric.api import env

env.hosts = ['ec2-user@ec2-XX.ap-northeast-1.compute.amazonaws.com']

per task definition on fabfile

from fabric.api import task,run,hosts

@hosts('ec2-user@ec2-XX.ap-northeast-1.compute.amazonaws.com')
@task
def remotetime():
	run("date")

Simplify host definition

prepare ssh config

# saved as ssh.config
Host web01
  User ec2-user
  HostName ec2-XX.ap-northeast-1.compute.amazonaws.com						

Available options are limited compared to actual ssh, see details

enable ssh config loading

from fabric.api import task,local,run,hosts,env

env.use_ssh_config = True
env.ssh_config_path = 'ssh.config'

execute with shortened name

$ fab remotetime -H web01						

Demo

para para manga

Image movie (not implemented)

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