Glossary: Difference between revisions
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= Glossary = | |||
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'''External Storage (S3 / NFS)''': Object storage or network drive for personal data, backups, or hard-to-reproduce results. Recommended for anything that is not temporary. | |||
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'''Flavor''': Predefined resource profile for instances (number of vCPUs, RAM, local system disk). Examples: m1.small, m1.large. | |||
'''Floating IP''': Publicly accessible IPv4 address that can be assigned to an instance as needed. This keeps the internal network topology unchanged. | |||
'''Home Region''': The region automatically assigned to a user during registration. | |||
'''Image''': Operating system image from which new instances are launched. bwCloud-OS provides various preconfigured images (e.g., Debian 12, Ubuntu 24.04); custom images can also be uploaded. | |||
'''Instance / VM''': Virtual machine running in a region. It receives CPU, RAM, network, and storage resources and behaves like a physical server. | |||
'''Project / Group Project''': Administrative container for resources, users, and quotas. In a group project, multiple people share all instances, images, security groups, etc., equally. | |||
'''Quota''': Resource limit (vCPUs, RAM, volumes, etc.) per project. Increases can be requested via a support ticket. | |||
'''Region''': One of the four operational sites (Freiburg, Karlsruhe, Mannheim, Ulm). Each region is an independent OpenStack cluster with its own IP address logic. | |||
'''Security Group''': Set of firewall rules (inbound/outbound) assigned to an instance. By default, only SSH (port 22) is open; additional ports must be explicitly allowed. | |||
'''Snapshot''': Point-in-time copy of an instance or volume. Snapshots appear as images and can be downloaded or converted into new volumes/instances. | |||
Persistent storage in bwCloud-OS that exists independently of a VM. Volumes can be attached to instances, resized, exported as images, or backed up via snapshots. | |||
'''Volume (Block Storage)''': Persistent storage in bwCloud-OS that exists independently of a VM. Volumes can be attached to instances, resized, exported as images, or backed up via snapshots. | |||
Revision as of 22:39, 17 October 2025
Glossary
Flavor: Predefined resource profile for instances (number of vCPUs, RAM, local system disk). Examples: m1.small, m1.large.
Floating IP: Publicly accessible IPv4 address that can be assigned to an instance as needed. This keeps the internal network topology unchanged.
Home Region: The region automatically assigned to a user during registration.
Image: Operating system image from which new instances are launched. bwCloud-OS provides various preconfigured images (e.g., Debian 12, Ubuntu 24.04); custom images can also be uploaded.
Instance / VM: Virtual machine running in a region. It receives CPU, RAM, network, and storage resources and behaves like a physical server.
Project / Group Project: Administrative container for resources, users, and quotas. In a group project, multiple people share all instances, images, security groups, etc., equally.
Quota: Resource limit (vCPUs, RAM, volumes, etc.) per project. Increases can be requested via a support ticket.
Region: One of the four operational sites (Freiburg, Karlsruhe, Mannheim, Ulm). Each region is an independent OpenStack cluster with its own IP address logic.
Security Group: Set of firewall rules (inbound/outbound) assigned to an instance. By default, only SSH (port 22) is open; additional ports must be explicitly allowed.
Snapshot: Point-in-time copy of an instance or volume. Snapshots appear as images and can be downloaded or converted into new volumes/instances.
Volume (Block Storage): Persistent storage in bwCloud-OS that exists independently of a VM. Volumes can be attached to instances, resized, exported as images, or backed up via snapshots.