Eucalyptus Limitations and Restrictions

This section provides defaults used for known limitations and restrictions associated with Eucalyptus features, services, and accounts as tested and supported by the Eucalyptus Quality Team. Some of these limitations may reflect the supported differences between AWS and Eucalyptus.

Functional Limitations

This section describes features and operations that are not supported by Eucalyptus, and therefore, considered a functional limitation or difference from that of AWS.

Configurable Limitations

This section lists the limitations that are present for configuring certain resources, as tested by Eucalyptus, and may differ from those imposed by AWS.

Description Default Maximum
The number of instances that can be started in one cluster. 2048 4096
The number of volumes that can be attached to a VM. Eucalyptus can attach up to 24-25 volumes per VM. None Unknown because EBS/HVM/PV instances would have different limits.
The number of access keys a user can have. Configurable in property authentication.access_keys_limit. 2 None
Name restrictions on the values that can be used with IAM. Same as AWS. The AWS restrictions on names are also generally applicable to Eucalyptus. n/a
Most default limits are defined via cloud properties. varies varies