...
- You can no longer access file snapshots in the ".snapshot" directory. Instead you will need to use TSM to restore any files.
Details
Software Versions
| Static | CF9 | LAMP2 | Cornell Stack |
|---|---|---|---|---|
Apache | 2.2 | 2.2 | 2.2 | 2.2 |
Coldfusion |
| 9.0.1 |
| 10 |
mod_php |
|
| 5.3 | 5.4 |
php-fpm |
|
|
| 5.4 |
Python |
|
| 2.7 | 2.7 |
Ruby |
|
| 1.8.7 | 1.9.3 |
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.
| Standalone | Shared |
|---|---|---|
Apache | 2.2 | 2.2 |
Start/Stop Apache | Yes | Yes* |
mod_cgi | Yes | No |
Custom virtualhost include | Yes | Yes |
mod_php | Yes | No |
PHP-FPM | Yes | Yes |
Start/Stop PHP-FPM | Yes | Yes |
Coldfusion | Yes | Yes |
Start/Stop Coldfusion | Yes | Yes |
Python | Yes | Yes |
Ruby | Yes | Yes |
* 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
| Memory (MB) |
|---|---|
Apache (mod_php) | 85 |
php-fpm | 35 |
coldfusion | 350 |
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