An overview presentation of the unique aspects of the getpantheon.com hosting platform and the development tools provided

1. An overview of Pantheon
managed hosting
Jeff McNear
plasterdog.com
jeffmcnear.com
847/849-7060
@plasterdog

2. The concept of a host that is
specifically optimized for a
particular CMS is becoming
more common.
Many hosts also offer a tailored
hosting package for a particular
CMS.
Of course if you enjoy sysadmin
stuff you can tweak your own
VPS configuration to behave as
you wish.

3. Pantheon is a managed hosting platform in that it is optimized to run
Drupal 6, Drupal 7 and WordPress. The platform is very fast and bills itself
as the only container based multi-tenant webhost on the market.
Other container driven examples are Google, Heroku (Sales Force)
& Red Hat.
Containers can be deployed and retracted very quickly –
New Republic recently re-launched their site on Pantheon and the site had
over 100 million page views in the first day!

4. All members of the platform (including the free level) have full access to a
unique suite of tools. Varnish caching is active by default, and Redis is
available on request.
Any site with a live URL has instant access to capacity to handle any
traffic spike. But there is a lot more…

5. Good practice is to develop in three separate environments:
DEV = local version of the site
TEST = a published version of the site on a server we control
(but usually not on the actual “live” server)
LIVE = the ultimate hosted destination of the site

6. To keep everything in
sync, “traditional”
version control tracks
changes and multiple
repositories can be set
up to push and pull
commits between
them.
In a typical scenario
the three versions of
the site are in
completely different
environments.

7. Problems can arise from the fact
that in this typical scenario there
are three separate hosting
configurations … opening the
possibility that something that
works in one environment will not
work as well in another.
“…. what happened? It worked
just fine on my machine …”

8. In Pantheon all three environments exist at the same
location allowing testing & development to take place
where the “live” site lives.
Each has a unique URL and can contain different versions
of code, database contents and files, and can be quickly
reconciled in a direct fashion.

9. The Dev environment is set up
automatically to use Drush and the
code is set up as a Git repository.
Whether you use version control
outside of Pantheon or not – the
site itself is under version control
with Dev being the master, and
Test & Live being branches.

10. DEV:
for site creation & building – has
a shorter cache – not intended
for load testing
TEST:
simulates code deployments –
intended for load testing – has
similar cache cycle as live
LIVE:
caching optimized for best
performance – expandable
into multiple containers

11. The platform is designed to
have code insertions /
modifications originate in Dev
and then be pushed to Test.
Once code changes are pushed
to Test they can then be pushed
to Live

12. Besides being good practice, the fact
that code can only be introduced via
the Dev environment has some very
real security benefits since it is unlikely
that an external attack would be aware
of the Dev environment … let alone
be able to get into it!

13. Content on the other hand will
usually be generated in either Test
or Live and then can be cloned
“down” to level below.
In a literal sense the “Live” content
can be cloned directly into “Dev”
without being first cloned into “Test”
– yet this is probably not a typical
use case.

14. All three environments can be
backed up directly through the
interface.
These backups are divided into 3
distinct zip files for:
- Code
- Database
- Files
However they can be restored
together into the environment
where they originate by clicking on
a single button.

15. THE DASHBOARD:
The Pantheon dashboard is deceptively simple.
From the main screen you can either “spin up” a
new site or access one already in place.

16. To start a new project:
- Name the site
- Select either “start
from scratch” or
“import a site”
- Choose between
Drupal 7
Drupal 6
Supported Drupal
distribution
- WordPress
- Go!

17. Once you select a site you have access to 7 tabs of
information for all three environments:
Code : commit status of any new code
Status: diagnostic information about the “health” of the
codeset
Workflow: Tool to migrate database & file info between
environments
Errors: log of any relevant server errors
Domain/SSL: Used to associate a URL with the “live”
environment
Backups: Activation, scheduling and restoration of
backups
Security: Enable/Disable password protection of
environment

18. THE CODE TAB:
Modified code can only be introduced via the Dev environment.
Once inserted you are prompted to commit your changes.

19. Code can be inserted into the project either via Git or SFTP.
It is worth noting that the connection mode must be set to SFTP in order for
the insertion of modules, plugins, themes, etc to be inserted into the
deployment via either the Drupal or WordPress admin interface.

20. Connection information is supplied directly in the code tab for both Git and
SFTP modes

21. Connecting to the site via SFTP
reveals a file structure that at
first looks a little strange ….
What you are looking for will be
nested inside the “code” folder

22. Once you expand the code folder
things will start looking familiar.

23. Once the Dev environment has been established, then it can be cloned into
The Test environment.

24. As new code is committed in Dev it can be pulled up into Test

25. As with Test, the Live version of the site is not automatically populated.
It needs to be cloned from the Test environment first … once it exists it is a
fully independent deployment.

26. The Test environment is intended to be kept current with both the content
found in the Live environment and the code in the Dev environment ….
if there are discrepancies you will be prompted to reconcile both in the
code tab

27. THE WORKFLOW TAB:
Database and/or files can be cloned between environments via the
Workflow tab

28. So unlike a typical case of version
control which monitors the codeset
only, Pantheon lets you seamlessly
migrate the content of your Database
and the various uploaded & generated
files created in the site building
process.

29. THE BACKUPS TAB:
Backups can be kept for either 1 month or 6 months - the backup is a
complete “snap shot” copy of the site.
Individual zip files for the code, database and uploaded & generated
files can be downloaded.
To create or restore backups the connection mode needs to be set to
Git.

30. These backup “snapshots” can be restored into the environment where
they were made – however this is a destructive process

31. A SIDE NOTE:
In a WordPress install the uploads
folder is where you would expect it
to be, but the contents are not.
They are found in a different folder
outside of wp-content.
This does not adversely effect
performance but makes it so that
BackupBuddy and Duplicator
plugins will not work since they
both look for crucial files in the
uploads folder … and they cannot
find them.
Perhaps for similar reasons you
cannot use either plugin’s zip files
to import a site.

32. THE SECURITY TAB:
While the URLs to the three environments are fairly obscure (before a live
URL has been associated with the project). You can take this obscurity a
step further by requiring login password set to gain access – each
environment is “secured” independently.

33. When activated, the user will see the prompt as above requiring
authentication.

34. ADDING TEAM MEMBERS:
The need for collaboration has been anticipated, you can add a “team member”
to a project giving them full access to the full dashboard.
Once the site has gone live billing responsibility can be transferred to another
team member – regardless of who established the account.

35. FORKING THE PROJECT WITH MULTIDEV:
Once confirmed a team member can work in the “main” environment – or
create a fork of the project to work independently. Forks can pull and push
into the main repository.

36. The interface will alert you to when the various branches are ahead and behind
each other and gives you the ability to merge them.
The multidev function is not supposed to be available for a free account, but if
you submit a ticket requesting it who knows ….

37. PRICING:
The pricing to host an active site isn’t cheap, but considering what you get it
is quite reasonable.
Use of the development tools is absolutely free!