Cloud Technical Glossary

Revision as of 16:46, 22 June 2022 by Shuber (talk | contribs) (Converted to sortable table form. Existing translation units removed for new formatting.)
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Term Description
APACHE A software for running a webserver
CALM/Cloud account lifecycle management Cloud lifecycle management
CEPH Distributed data storage platform, our standard storage software on the cloud
CEPHFS/CEPH File System CEPH storage that can be mounted for e.g. data sharing on multiple instances/VMs.
Compute Cloud A flavour of instances/VMs which will be running for a limited time and may have high CPU/memory requirements during the entire lifespan.
CVMFS A distributed read-only content distribution system, often used for managing software.
Dashboard The web portal, named "Horizon" for our OpenStack clouds, for viewing and managing a user's cloud resources.
Ephemeral disk Virtual disk files, associated (and destroyed) with an instance/VM.
Flavour The OpenStack term for defining the compute, memory, and storage capacity of a new instance/VM
Floating IP An IP address that can be associated with an instance/VM to allow external access
FTP An obsolete file transfer protocol (should not be used for new deployments)
Horizon See "dashboard"
Host The physical resources supporting an instance/VM
Image Files which contain the contents of a virtual disk, often a base operating system in the creation of a volume or ephemeral disk
Instance A virtual server in the cloud infrastructure. Also known as a Virtual Machine (VM)
IPV6/Internet Protocol Version 6
Object Storage Persistent storage space for large amounts of data. Typically read access only, e.g. images and data sets.
OpenStack The software suite used on Compute Canada clouds to control hardware resources such as computers, storage and networking
Persistent Cloud An instance/VM anticipated to run indefinitely, such as web servers, database servers, etc. Typically has low or bursty CPU requirements.
RAS/Rapid Access Service Program allowing PI's to request and receive a given amount of Cloud resources
RAC/Resource Allocation Competition Program via which PIs can request additional resources
S3/Simple Storage Service A type of object storage
Security Group A set of rules controlling network traffic to and from an instance/VM
Snapshot A copy of a volume that can be used as a backup or to launch another instance/VM.
SSL/Secure Sockets Layer Protocol to allow encrypted communications over networks
SWIFT Another type of object storage
Tenant A group or user's allocation of cloud resources (now called a Project)
VCPU/Virtual central processing unit An instance/VM can have one or more CPUs assigned to it, each of which is seen as a single physical CPU core by the operating system.
VGPU/Virtual graphics processing unit An instance/VM can have one or more VGPUs assigned to it.
Volume An allocation of storage resources that can be attached or detached to/from an instance/VM, exposed as a block device (a virtual disk).
VM/Virtual Machine See "instance"