Development and Deployment

Information Systems 337

Prof. Harry Plantinga

Developing and Deploying

These lab VMs will be going away after the semester ends

How will you deploy the site?How will you save the source code so that

you or others can work on it later?

Site Maintenance

Your web site is up and running, and people are using it

You want to change a page You edit the page.tpl.php file. Syntax error! Site

goes down! You can't remember how to fix it. Site stays

down! You have two people editing the same file. Site

down! Work lost!

What to do?

Development Strategies

You will need live and development sites Devel site on your own VM Deploy site on calvincs.com Live site on client’s dreamhost account

Ideally: one-button deployment

Deployment Deployment means uploading your site (www

directory, databases) to a host Host must support PHP, MySQL, etc. Next lab: deployment on dreamhost

(calvincs.com). Other hosts – same idea, different details Load your database onto their server Use FTP to load your /var/www/ directory onto their

server Adjust configuration… Point your domain name to the new host Turn on caching Test

Deploying your term project…

Deploying to Dreamhost

Upload your database Create a database on host Export development Drupal database with mysqldump Import your database into Dreamhost server

Upload your Web directory Zip your /var/www directory Copy to dreamhost server Unzip in appropriate directory

Modify settings as needed settings.php – for logging in to the 1and1 database .htaccess – for finding your files

Revision Control: the problem…

Have you ever lost work while writing a term paper?

How do you collaborate on writing projects?Have you ever made changes to a computer

program that caused it to stop working?How would you collaborate on a development

project like a website?What if you have two versions of your website

and need to manage merges and synchronization?

Revision Control

Revision control (or source control or version control) systems help you maintain old and new versions of code view and reconcile difference between versions check out and check in code keep track of every change: who, why? revert to previous versions of your code

Revision Control Systems

Popular revision control systems CVS

old, stable used by Drupal, sourceforge

Subversion (SVN) newer, quite popular Install on your own PC!

Git Newest, maybe becoming most popular?

Many others…

Drupal and CVS Check out the latest version of a drupal release:

cvs -d:pserver:anonymous:anonymous@cvs.drupal.org:/cvs/drupal checkout –r DRUPAL-5 drupal

See what releases are available: cvs

-d:pserver:anonymous:anonymous@cvs.drupal.org:/cvs/drupal status -v CHANGELOG.txt

Tags and Branches: Each new version of Drupal is a new branch Tags are snapshots at a point in time of a particular

branch

Hint: use CVS to get code from drupal.org and use git or SVN to do revision control on your own code!

Git

Designed for speedOriginally designed and developed by Linus

Torvalds for Linux kernel developmentDistributed (every working directory is a full

respository)Very popularGUI support on various operating systems

Git Commands git-init(1) to create a new repository. git-show-branch(1) to see where you are. git-log(1) to see what happened. git-checkout(1) and git-branch(1) to switch branches. git-add(1) to manage the index file. git-diff(1) and git-status(1) to see what you are in the

middle of doing. git-commit(1) to advance the current branch. git-reset(1) and git-checkout(1) (with pathname

parameters) to undo changes. git-merge(1) to merge between local branches. git-rebase(1) to maintain topic branches. git-tag(1) to mark known point.

Sharing your Code

When you pass off the website to your client, they will also need access to the source code.

They could download it from the host via FTP or scp

You could set up a repository on github.com This would allow multiple people to work on the site Free for open source projects

Dreamhost has git – use push or clone to upload or download your site

Or host on a site like Bitbucket.org