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The

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Cornell Stack provides a consolidated Static, ColdFusion, and LAMP service.

Customer can host different types of websites using different technology on one VM which provides ease of administration and provides potential cost savings  This is currently a BETA service.

A summary of the updated features:

• 64-bit RHEL 6  (Coldfusion can allocate more than 2 GB of memory)
  • CF9/LAMP currently using 32-bit RHEL5
• Coldfusion 10 using Java 1.7
  • CF9 currently using CF9 with Java 1.6
• PHP 5.4
  • LAMP2 currently uses PHP 5.3
• Python 2.7
  • No change from LAMP2
• Ruby 1.9.3
  • LAMP2 currently uses Ruby 1.8.7
• Perl 5.16
  • No change from LAMP2
• MySQL 5.5
  • Same version from LAMP2
  • MySQL database located on same VM versus separate
• Local storage
  • No longer use NFS (Shared File Service) for storage
  • Customers can opt to continue to use SFS, but will incur additional charges

Details

Software Versions

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shared shared

Shared vs. Standalone Apache

In CF9/LAMP2 each "instance" represented a separate apache instance that could be started/stopped independently. This provides a high level of isolation, but can also consume more system resources and complicate server administration. The "shared" apache instance makes it possible to host a larger number of instances on a single apache instance while still providing isolation between the instances.

*Will start/stop ALL sites that are behind the shared Apache

How many instances

Using a VM with 2 GB of memory the following are some guidelines on possible deployments. Individual applications may vary (i.e. it's possible to have a single PHP/Python/Ruby/Perl application that consumes 100% of the memory. Increasing the amount of memory may make it possible to run more instances, but it is not a recommended best practice.

Please note that each instance could host anywhere from 1 website to 100 websites depending on how the software is configured (i.e. a single multisite drupal instance serving 100 websites).

Coldfusion

• 2 instances shared or standalone

PHP

• 3 standalone
• 9 shared

Python

• 3 standalone
• 9 shared

Ruby

• 3 standalone
• 9 shared

Static

• 3 standalone
• 100 shared

The estimates below are based on the following observed utilization