1. Development and Deployment
Information Systems 337
Prof. Harry Plantinga
Development and Deployment

2. 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?

3. 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?

4. 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

5. 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…

6. 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 dreamhost database
.htaccess – for finding your files

7. 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?

8. 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

9. 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
Newer, maybe most popular?
Many others…

10. Drupal and CVS Check out the latest version of a drupal release:
cvs - checkout –r DRUPAL-5 drupal
See what releases are available:
cvs - 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!

11. Git
Designed for speed
Originally designed and developed by Linus Torvalds for Linux kernel development
Distributed (every working directory is a full respository)
Very popular
GUI support on various operating systems

12. 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.

13. 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 github.com