CD environment resources and limitations
Each CD environment includes the following resources:
- Multi-tier Varnish®, web, and database configuration
- Compatibility with Drupal 7 and Drupal 8
- Up to 5GB of filesystem storage
- Two dedicated PHP procs
- Memcache
- Supports custom domain names
- Supports SSL
Limitations
CD environments in Acquia Cloud are not intended as replacements
for production or load testing environments. Be aware of the following
limitations that apply to these types of environments:
- CD environments are limited to three active databases per environment
limited to 1GB, and query execution time is limited to 60 seconds.
- You can not add or delete databases in Acquia Cloud CD
environments. To obtain a new database, you must recreate the
environment.
- CD environment software versions may not match Acquia Cloud
environment versions. Pushing applications from your CD environment
to your Production environment may have unexpected consequences. In
general, issues should be minimal.
- CD environments do not currently support the following features
available to standard Acquia Cloud environments:
- Creation of custom scheduled jobs
- Live development
- Server or uptime reporting
- Custom VCLs
- Drupal 6-based environments
- Dedicated Acquia Search cores
mod_proxy
configurations — because of this, tests that depend
on mod_proxy
being enabled will fail
- Node.js environments
- Elastic IPs (EIPs) can not be assigned to these environments
- To maintain platform stability, CD environments that exceed
filesystem limits are subject to deletion.
- CD environments are limited to 256MB of RAM per process.
- Acquia performs 24x7 monitoring of CD environment infrastructure
health but, unlike Acquia Cloud Enterprise production environments, the
application uptime SLA does not extend to CD environments.
- Because Acquia Cloud CD is based on a dynamic infrastructure,
the following items are applicable to CD environments:
- Acquia will proactively perform service restarts or maintenance
activities to preserve High Availability. These activities will
not be preceded by formal notifications and will occur as required
to maintain service availability.
- Acquia may have to terminate cron jobs and other automated
processes at our discretion; therefore, Customer cron jobs and
scripts should be resilient to failure.
- SSH sessions will be disconnected when containers are replaced; in
these cases, customers should reconnect and they will
automatically connect to a healthy container.