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Fabric workshop (1)
Soshi Nemoto Mulodo Vietnam Co., Ltd.
Our Purpose Make ourselves ‘Business partner’ from ‘factory’.
Points Engineering knowledge <- * TODAY * Logical Thinking Co-operation work
Resources Meetup: http://www.meetup.com/Open-Study-Group-Saigon Slideshare: http://www.slideshare.net/nemo-mulodo/
— Study Group —
Previous study DevOps: What's DevOps
http://www.slideshare.net/nemo-mulodo/devops1-whats-devops-mosg
DevOps: Vagrant http://www.slideshare.net/nemo-mulodo/devops2-vagrant-mosg
DevOps: Ansible http://www.slideshare.net/nemo-mulodo/devops3-ansible-mosg
DevOps: Ansible(2) http://www.slideshare.net/nemo-mulodo/devops4-ansible2-mosg
Preparation for workshop (tools) http://www.slideshare.net/nemo-mulodo/instruction-dev-environment
Feedback of previous study
Goal
Server Apps
Apache
PHP
MySQL
Product Apps
Source
Data
Cron
Virtual server
Vagrant+ ansible+ fabric
automation
Goal
Server Apps
Apache
PHP
MySQL
Product Apps
Source
Data
Cron
Virtual server
Vagrant+ ansible+ fabric
automation
Goal
Server Apps
Apache
PHP
MySQL
Product Apps
Source
Data
Cron
Virtual server
Vagrant+ ansible+ fabric
automation
Today: learn Fabric
Fabric workshop A radically simple IT automation engine
Share GOAL
create fabfile
AGENDA
GOAL
Create deploy tool - deploy - dev/staging/production - tag name (any ascii) - rollback - use any tag deployed - tag list - remove tag.
GOAL$ fab help Usage: <Deploy> $ fab -R [ROLE] deploy $ fab -R [ROLE] deploy:mode=[MODE],tag=[TAG],force=[True] deploy source to servers which are defined as ROLE Options: mode : 'production', 'staging', ‘development(default)' tag : any ASCII tag. (default = Epoch time + microtime) force: set 'True' to overwrite. (default = False)
<Show existed tags> $ fab -R [ROLE] tags show existed tags
<Change version> $ fab -R [ROLE] change:tag=XXXXXX change working version to another tagged source tag should be exactly same as shown by Tags command
<Remove specified tag> $ fab -R [ROLE] remove:tag=XXXXXX remove exist tags tag should be exactly same as shown by Tags command
GOAL
DEMO
GOAL
Create deploy tool - deploy - dev/staging/production - tag name (any ascii) - rollback - use any tag deployed - tag list - remove tag.
Share GOAL
create fabfile
AGENDA
local / print remote(use Ansible inventory) cd / file put / conditions
Install fabric (useing pip)
$ brew install python --framework : $ pip install fabric
Local task
$ cd {YOUR VAGRANT_DIR}
fabfile.py --- from fabric import api
def localtest(): print "local test" api.local('ls -al')
Local task (1)$ fab -R {ROLE} -f {FILE} {COMMAND}
$ fab localtest local test [localhost] local: ls -al total 44 drwxr-xr-x 10 nemo staff 340 Jan 14 15:05 . drwxr-xr-x+ 427 nemo staff 14518 Jan 14 14:52 .. drwxr-xr-x 3 nemo staff 102 Nov 19 20:10 .vagrant -rw-r--r-- 1 nemo staff 3337 Jan 13 20:58 Vagrantfile drwxr-xr-x 18 nemo staff 612 Jan 14 15:26 fabfile.py -rw-r--r-- 1 nemo staff 29 Jan 7 18:34 hosts drwxr-xr-x 6 nemo staff 204 Dec 10 18:47 playbooks -rw-r--r-- 1 nemo staff 133 Dec 10 17:23 setup.yml
Done. air:nemo@~/TEST_STUDY$
$ fab localtest
Share GOAL
create fabfile
AGENDA
local / print remote(use Ansible inventory) cd / file put / conditions
remote taskfabfile.py --- from fabric import api
def remotetest(): print "remote test" api.run('ls -al’) api.sudo('ls -al’)
Remote task (2)
$ fab remotetest No hosts found. Please specify (single) host string for connection: {IP_ADDRESS}
[192.168.33.50] run: ls -al [192.168.33.50] out: total 44 [192.168.33.50] out: drwx------. 6 vagrant vagrant 4096 Jan 14 05:58 . : [192.168.33.50] out: drwxrwxr-x 3 vagrant vagrant 4096 Jan 13 11:47 src [192.168.33.50] out:
total 44
$ fab remotetest
target host required...
$ fab -H {IP_ADDRESS} remotetest
Remote task (trouble?)~/.ssh/config --- Host {IP_ADDRESS_OF_YOUR_VAGRANT_MACHINE} User vagrant TCPKeepAlive yes IdentityFile {PRIVATE_KEY_OF_YOUR_VAGRANT_MACHINE} IdentitiesOnly yes ControlPersist 2h
Where is the private key??$ vagrant ssh-config
api.env.use_ssh_config = Trueset option in your fabfile.py
Using ROLE instead of -H$ fab -R httpd-server remotetest
: from fabric.api import env from fabric.decorators import roles
env.user = user env.roledefs.update({ ‘httpd-server': [‘{IP_ADDRESS}’, ‘{IP_ADDRESS}’], 'toolservers': [‘{IP_ADDRESS}’], })
@roles(‘httpd-server') def YOUR_COMMAND: pass
Using ROLE (2)
But...
We want to use Ansible inventory (hosts) file.
* Target host definition should be only one. * The definition of targets in Fabric is in code,
so we should use Ansible’s inventory file.
Using Ansible inventoryfabfile.py --- from ansible import inventory from fabric.api import env, run, local from fabric import api
inventory = inventory.Inventory('./hosts') env.roledefs = inventory.groups_list() env.use_ssh_config = True
def remotetest(): run('ls -al')
hosts --- [httpd-server] 192.168.33.50
see) Ansible(1-3)
Using Ansible inventory
$ fab -R httpd-server remotetest
OK!!
Ansible inventory (Trouble?)
ex) /usr/local/Cellar/ansible/1.9.4/libexec/lib/python2.7/site-packages /usr/local/Cellar/ansible/1.9.4/libexec/vendor/lib/python2.7/site-packages
fabfile.py --- import sys sys.path.append({YOUR_ANSIBLE_PATH})
If you couldn’t load Ansible libraries, please set your ansible library path.
Share GOAL
create fabfile
AGENDA
local / print remote(use Ansible inventory) cd / file put / conditions
mkdir and cdfabfile.py --- from ansible import inventory from fabric.api import env, run, local, cd from fabric import api
inventory = inventory.Inventory('./hosts') env.roledefs = inventory.groups_list() env.use_ssh_config = True
def mkdir_and_cd(): run(‘mkdir -p TMP’) with cd(‘TMP’): run(‘pwd’)
$ fab -R httpd-server mkdir_and_cd
mkdir and cd (2)fabfile.py --- : from fabric.contrib import files : : def mkdir_and_cd():
if not files.exists(‘TMP’): run(‘mkdir -p TMP’) with cd(‘TMP’): run(‘ls -al’)
$ fab -R httpd-server mkdir_and_cd
mkdir, cd and putfabfile.py --- : from fabric.api import env, run, local, cd, put from fabric.contrib import files : : def mkdir_cd_and_put():
if not files.exists(‘TMP’): run(‘mkdir -p TMP’) with cd(‘TMP’): if not files.exists({DEST_FILE}): put({SRC_FILE}, {DEST_FILE})
$ fab -R httpd-server mkdir_cd_and_put
