PHP Cloud Talk

Deploying with Fabric Nigel Scaling PHP in the cloudNigel () Deploying with Fabric phpcloud 1 / 16

What the heck is Fabric? Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Its a library and a command-line tool. Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Its a library and a command-line tool. It streamlines the use of SSH for application deployment or systems administration tasks. Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Its a library and a command-line tool. It streamlines the use of SSH for application deployment or systems administration tasks. That doesn’t mean you have to use it only for SSH related tasks. Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Its a library and a command-line tool. It streamlines the use of SSH for application deployment or systems administration tasks. That doesn’t mean you have to use it only for SSH related tasks. You know those boring and repetitive tasks you have to do for every deployment? Writing it in fabric removes the monotony, it’ll be one step! Nigel () Deploying with Fabric phpcloud 2 / 16

What the heck is Fabric? Well, for starters, its written in python. Yes, I’m talking about Python in a PHP conference. Its a library and a command-line tool. It streamlines the use of SSH for application deployment or systems administration tasks. That doesn’t mean you have to use it only for SSH related tasks. You know those boring and repetitive tasks you have to do for every deployment? Writing it in fabric removes the monotony, it’ll be one step! Fabric can execute local or remote commands and upload/download ﬁles and much much more! Nigel () Deploying with Fabric phpcloud 2 / 16

Ok, so how do I use Fabric? Nigel () Deploying with Fabric phpcloud 3 / 16

Ok, so how do I use Fabric?Write a ﬁle called fabﬁle.py, write your commands in it, and place it in the root of your project. Then execute individual commands with ”fab foo”. Nigel () Deploying with Fabric phpcloud 3 / 16

This is what a fabﬁle.py looks likefrom fabric.api import rundef host_type(): run(’uname -s’) Nigel () Deploying with Fabric phpcloud 4 / 16

What happens when you run it$ fab -H localhost,linuxbox host_type[localhost] run: uname -s[localhost] out: Darwin[linuxbox] run: uname -s[linuxbox] out: LinuxDone.Disconnecting from localhost... done.Disconnecting from linuxbox... done. Nigel () Deploying with Fabric phpcloud 5 / 16

What makes Fabric unique? Nigel () Deploying with Fabric phpcloud 6 / 16

What makes Fabric unique? There are other deployment tools out there, what makes Fabric unique?Fabric gives you a basic API on which YOU build the methods for YOUR workﬂow. Nigel () Deploying with Fabric phpcloud 6 / 16

Lets look at the API further Nigel () Deploying with Fabric phpcloud 7 / 16

Lets look at the API further There’s no point in me saying Fabric is the next best thing since sliced bread without showing oﬀ its API. Nigel () Deploying with Fabric phpcloud 7 / 16

Local commands Nigel () Deploying with Fabric phpcloud 8 / 16

Local commands There’s no point in me saying Fabric is the next best thing since sliced bread without showing oﬀ its API. Nigel () Deploying with Fabric phpcloud 8 / 16

Local commandsdef prepare_deploy(): local("bin/run tests") local("git add . && git commit") Nigel () Deploying with Fabric phpcloud 9 / 16

Lets go remotefrom __future__import with_statementfrom fabric.api import local, settings, abort, run, cdfrom fabric.contrib.console import confirmdef deploy(): code_dir = ’/var/www/myproject’ with settings(warn_only=True): if run("test -d %s" % code_dir).failed: run("git clone user@github.com/user/repo" % code_dir) with cd(code_dir): run("git pull") Nigel () Deploying with Fabric phpcloud 10 / 16

What happens when you run it$ fab deployNo hosts found. Please specify (single) hoststring for connection: myserver[myserver] run: git pull[myserver] out: Already up-to-date.[myserver] out:[myserver] run: touch app.wsgiDone. Nigel () Deploying with Fabric phpcloud 11 / 16

Use the envenv.hosts = [’my_server’] Nigel () Deploying with Fabric phpcloud 12 / 16

Disadvantage Nigel () Deploying with Fabric phpcloud 13 / 16

Disadvantage Not parallel. If you have to execute tasks on 5 machines, Fabric does it one by one. Nigel () Deploying with Fabric phpcloud 13 / 16

Disadvantage Not parallel. If you have to execute tasks on 5 machines, Fabric does it one by one. However, there is a fork of Fabric that can execute tasks parallely on multiple hosts. Nigel () Deploying with Fabric phpcloud 13 / 16

Disadvantage Not parallel. If you have to execute tasks on 5 machines, Fabric does it one by one. However, there is a fork of Fabric that can execute tasks parallely on multiple hosts. Everything needs to be deﬁned manually. Yeah, this is the power as well as sometimes the curse. For certain situations, its just easier to use tools like capistrano. Nigel () Deploying with Fabric phpcloud 13 / 16

Workﬂow Discussions Nigel () Deploying with Fabric phpcloud 14 / 16

Workﬂow Discussions How do you deploy your sites to production? Nigel () Deploying with Fabric phpcloud 14 / 16

More information Fabric Website, http://fabﬁle.org A LTEXSource for my slides, https://github.com/nigelbabu/phpcloud-fabric Nigel () Deploying with Fabric phpcloud 15 / 16

Q and A Nigel () Deploying with Fabric phpcloud 16 / 16

Q and A Ask your questions, give your feedback. Nigel () Deploying with Fabric phpcloud 16 / 16

Q and A Ask your questions, give your feedback. Complains redirected to /dev/null. Nigel () Deploying with Fabric phpcloud 16 / 16

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PHP Cloud Talk

by Nigel Babu on Jul 09, 2011

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PHP Cloud Talk Presentation Transcript