VNFD Specification
V0.1
Catalog
1.
2.
3.
4.
5.
Scope........................................................................................................................................ 4
Terms, Definitions and Abbreviations ............................................................................. 4
VNFD TOSCA Model ............................................................................................................... 4
VNFD TOSCA Definition ....................................................................................................... 5
TOSCA Type Definition ........................................................................................................ 9
5.1
COMMON .................................................................................................................. 9
5.1.1 tosca.artifacts.Root ...................................................................................... 9
5.1.2 tosca.nodes.Root........................................................................................... 9
5.1.3 tosca.capabilities.Root .............................................................................. 10
5.1.4 tosca.capabilities.Node ............................................................................. 10
5.1.5 tosca.capabilities.Container..................................................................... 10
5.1.6 tosca.relationships.DependsOn ............................................................... 11
5.1.7 tosca.relationships.HostedOn .................................................................. 11
5.1.8 tosca.relationships.ConnectsTo .............................................................. 11
5.1.9 tosca.relationships.RoutesTo ................................................................... 11
5.1.10
tosca.relationships.AttachesTo ....................................................... 12
5.1.11
tosca.interfaces.node.lifecycle.Standard ..................................... 12
5.2
VNF ......................................................................................................................... 12
5.2.1 tosca.nodes.nfv.ext.VNF ........................................................................... 12
5.2.2 tosca.nodes.nfv.VNF .................................................................................. 13
5.3
VDU ......................................................................................................................... 13
5.3.1 tosca.nodes.nfv.ext.VDU .......................................................................... 13
5.3.2 tosca.nodes.nfv.VDU .................................................................................. 14
5.3.3 tosca.nodes.nfv.ext.ImageFile ................................................................ 14
5.3.4 tosca.nodes.nfv.ext.BlockStorage.Local ............................................... 15
5.3.5 tosca.nodes.BlockStorage ......................................................................... 16
5.3.6 tosca.capabilities.Compute.Container.Architecture ......................... 16
5.3.7 tosca.capabilities.nfv.ext.ImageFile ...................................................... 16
5.3.8 tosca.capabilities.nfv.ext.GuestOs ......................................................... 16
5.3.9 tosca.capabilities.Attachment ................................................................. 17
5.3.10
tosca.capabilities.nfv.Metric ............................................................ 17
5.3.11
tosca.relationships.nfv.Monitor ...................................................... 17
5.4
Networking ........................................................................................................... 17
5.4.1 tosca.nodes.nfv.ext.CP ............................................................................. 17
5.4.2 tosca.nodes.nfv.CP ..................................................................................... 17
5.4.3 tosca.nodes.network.Port ........................................................................ 18
5.4.4 tosca.nodes.nfv.ext.VL.............................................. 错误！未定义书签。
5.4.5 tosca.nodes.nfv.VL ..................................................................................... 19
5.4.6 tosca.nodes.nfv.VL.ELine ......................................................................... 19
5.4.7 tosca.nodes.nfv.VL.ELAN .......................................................................... 19
6.
7.
5.4.8 tosca.nodes.nfv.VL.ETree......................................................................... 19
5.4.9 tosca.nodes.network.Network ................................................................ 19
5.4.10
tosca.capabilities.nfv.VirtualLinkable ........................................... 20
5.4.11
tosca.capabilities.network.Linkable .............................................. 21
5.4.12
tosca.capabilities.nfv.VirtualBindable ........................................... 21
5.4.13
tosca.capabilities.network.Bindable .............................................. 21
5.4.14
tosca.relationships.nfv.VirtualLinksTo .......................................... 21
5.4.15
tosca.relationships.network.LinksTo ............................................. 21
5.4.16
tosca.relationships.nfv.VirtualBindsTo.......................................... 21
5.4.17
tosca.relationships.network.BindsTo............................................. 21
VNFD Example...................................................................................................................... 22
Appendix ............................................................................................................................... 24
7.1
scalar-unit.size .................................................................................................... 25
7.2
scalar-unit.time ................................................................................................... 25
7.3
TOSCA version...................................................................................................... 25
1. Scope
The scope of the present document is to describe the VNFD Specification.
2. Terms, Definitions and Abbreviations
For the purposes of the present document, the following abbreviations apply:
Abbreviation
Definition
CSAR
Cloud Service Archive
TOSCA
Topology and Orchestration Specification for Cloud
Applications
VNF
Virtual Network Function
VNFD
Virtual Network Function Descriptor
Table 2-1 abbreviations
3. VNFD TOSCA Model
A VNF is a subsystem in a network service, using A TOSCA Service Template (YAML) as VNF
template, it can include:
VDU, which is a subset of a VNF. A VDU can be mapped to a single VM;
Connection point, some of connection points are only used to connect internal virtual link,
while others are exposed to connect outside virtual link. A connection point has to bind with a
VDU.
Internal virtual link, the main functionalities are the same with the virtual link defined in the
network service level, but it is only used within VNF to provide connectivity between VDUs.
VNFD Data Model and TOSCA Template
4. VNFD TOSCA Definition
TOSCA Service Template definition:
Keyname
Requir
ed
Type
Description
tosca_definitions_ver
yes
string
Defines the version of the TOSCA Simple Profile
sion
metadata
specification the template (grammar) complies with.
no
map of string
Defines a section used to declare additional metadata
information.
Refers to Metadata keynames definition.
description
no
description
Declares a description for this Service Template and its
contents.
dsl_defintions
no
N/A
Declares optional DSL-specific definitions and
conventions.
For example, in YAML, this allows
defining reusable YAML macros (i.e., YAML alias
anchors) for use throughout the TOSCA Service
Template.
Keyname
Requir
ed
Type
Description
repositories
no
list of
Declares the list of external repositories which contain
Repository
artifacts that are referenced in the service template
definitions
along with their addresses and necessary credential
information used to connect to them in order to
retrieve the artifacts.
Reserved
artifact_types
no
list of
This section contains an optional list of artifact type
Artifact Types
definitions for use in the service template
Reserved
data_types
capability_types
interface_types
no
no
no
list of
Declares a list of optional TOSCA Data Type definitions.
Data Types
Reserved
list of
This section contains an optional list of capability type
Capability
definitions for use in the service template.
Types
Reserved
list of
This section contains an optional list of interface type
Interface Types
definitions for use in the service template.
Reserved
relationship_types
node_types
group_types
no
no
no
list of
This section contains a set of relationship type
Relationship
definitions for use in the service template.
Types
Reserved
list of
This section contains a set of node type definitions for
Node Types
use in the service template.
list of
This section contains a list of group type definitions for
Group Types
use in the service template.
Reserved
policy_types
no
list of
This section contains a list of policy type definitions for
Policy Types
use in the service template.
Reserved
imports
no
list of
Declares import statements external TOSCA Definitions
Import
documents.
Definitions
included in CSAR or in other server.
The referenced TOSCA files can be
1. If basic TOSCA files are in the CSAR, the import file
path can be relative path.
2. If basic TOSCA files are in other server, the import file
path must be absolute path.
Keyname
Requir
ed
Type
Description
topology_template
no
Topology
Defines the topology template of an application or
Template
service, consisting of node templates that represent the
definition
application’s or service’s components, as well as
relationship templates representing relations between
the components.
Metadata keynames definition:
Keyname
Requir
Type
Description
ed
id
YES
string
Declares ID of the VNF Descriptor.
vendor
YES
string
Declares the vendor of the template.
Such as ZTE, HW, ……
version
YES
string
Declares the version string for the template.
name
YES
string
Declares the name of the VNF Descriptor.
vnf_type
YES
string
VNF application type.
Such as:
vFW, vNET, vBrasCP, vLB, ……
vnfm_type
no
string
VNFM type, which is used to choose which VNFM to
manage the VNF.
When the VNFM is registered, the
VNFM type should be gotten.
nsh_aware
no
string
NSH aware in SFC function
Topology Template definition:
Keyname
Required
Type
Description
description
no
description
The optional description for the Topology Template.
inputs
no
list of
An optional list of input parameters (i.e., as parameter
parameter
definitions) for the Topology Template.
definitions
node_templates
no
list of
An optional list of node template definitions for the
node
Topology Template.
templates
relationship_templates
no
list of
An optional list of relationship templates for the
relationship
Topology Template.
templates
Reserved
Keyname
Required
Type
Description
groups
no
list of
An optional list of Group definitions whose members are
group
node templates defined within this same Topology
definitions
Template.
list of
An optional list of Policy definitions for the Topology
policy
Template.
definitions
Reserved
list of
An optional list of output parameters (i.e., as parameter
parameter
definitions) for the Topology Template.
policies
no
outputs
no
definitions
substitution_mappings
no
N/A
An optional declaration that exports the topology
template as an implementation of a Node type.
This also includes the mappings between the external
Node Types named capabilities and requirements to
existing implementations of those capabilities and
requirements on Node templates declared within the
topology template.
Example:
tosca_definitions_version: # Required TOSCA Definitions version string
# Optional metadata keyname: value pairs
metadata:
id: #VNFD unique identifier
vendor:
#VNF vendor
version:
#VNF version
name:
#VNF name
vnf_type:
#VNF type
vnfm_type:
#VNFM type
# Optional description of the definitions inside the file.
description: <template_type_description>
dsl_definitions:
# list of YAML alias anchors (or macros)
imports:
# ordered list of import definitions
node_types:
# list of node type definitions
topology_template:
# topology template definition of the cloud application or service
description: <template_description>
inputs: <input_parameter_list>
outputs: <output_parameter_list>
node_templates: <node_template_list>
groups: <group_definition_list>
# Optional declaration that exports the Topology Template
# as an implementation of a Node Type.
substitution_mappings:
node_type: <node_type_name>
capabilities:
<map_of_capability_mappings_to_expose>
requirements:
<map_of_requirement_mapping_to_expose>
5. TOSCA Type Definition
The present clauses below descript the extension type definition for NFV VNF according to ETSI
NFV IFA011 document, ”tosca_simple_yaml_1_0 protocol” and “tosca-nfv-v1.0-csd03”
specifications. The VNF provider also can extend the TOSCA types based on this definition.
5.1
COMMON
5.1.1 tosca.artifacts.Root
tosca.artifacts.Root:
description: >
The TOSCA Artifact Type all other TOSCA Artifact Types derive from
properties:
version: version
5.1.2 tosca.nodes.Root
tosca.nodes.Root:
description: >
The TOSCA root node all other TOSCA base node types derive from.
attributes:
tosca_id:
type: string
tosca_name:
type: string
state:
type: string
capabilities:
feature:
type: tosca.capabilities.Node
requirements:
- dependency:
capability: tosca.capabilities.Node
node: tosca.nodes.Root
relationship: tosca.relationships.DependsOn
occurrences: [ 0, UNBOUNDED ]
interfaces:
Standard:
type: tosca.interfaces.node.lifecycle.Standard
tosca.artifacts.Root:
description: >
The TOSCA Artifact Type all other TOSCA Artifact Types derive from
properties:
version: version
5.1.3 tosca.capabilities.Root
tosca.capabilities.Root:
description: >
The TOSCA root Capability Type all other TOSCA base Capability Types
derive from.
5.1.4 tosca.capabilities.Node
tosca.capabilities.Node:
derived_from: tosca.capabilities.Root
5.1.5 tosca.capabilities.Container
tosca.capabilities.Container:
derived_from: tosca.capabilities.Root
properties:
num_cpus:
type: integer
required: false
constraints:
- greater_or_equal: 1
cpu_frequency:
type: scalar-unit.frequency
required: false
constraints:
- greater_or_equal: 0.1 GHz
disk_size:
type: scalar-unit.size
required: false
constraints:
- greater_or_equal: 0 MB
mem_size:
type: scalar-unit.size
required: false
constraints:
- greater_or_equal: 0 MB
5.1.6 tosca.relationships.DependsOn
tosca.relationships.DependsOn:
derived_from: tosca.relationships.Root
valid_target_types: [ tosca.capabilities.Node ]
5.1.7 tosca.relationships.HostedOn
tosca.relationships.HostedOn:
derived_from: tosca.relationships.Root
valid_target_types: [ tosca.capabilities.Container ]
5.1.8 tosca.relationships.ConnectsTo
tosca.relationships.ConnectsTo:
derived_from: tosca.relationships.Root
valid_target_types: [ tosca.capabilities.Endpoint ]
properties:
credential:
type: tosca.datatypes.Credential
required: false
5.1.9 tosca.relationships.RoutesTo
tosca.relationships.RoutesTo:
derived_from: tosca.relationships.ConnectsTo
valid_target_types: [ tosca.capabilities.Endpoint ]
5.1.10 tosca.relationships.AttachesTo
tosca.relationships.AttachesTo:
derived_from: tosca.relationships.Root
valid_target_types: [ tosca.capabilities.Attachment ]
properties:
location:
type: string
constraints:
- min_length: 1
device:
type: string
required: false
5.1.11 tosca.interfaces.node.lifecycle.Standard
tosca.interfaces.node.lifecycle.Standard:
create:
description: Standard lifecycle create operation.
configure:
description: Standard lifecycle configure operation.
start:
description: Standard lifecycle start operation.
stop:
description: Standard lifecycle stop operation.
delete:
description: Standard lifecycle delete operation.
5.2
VNF
5.2.1 tosca.nodes.nfv.ext.VNF
tosca.nodes.nfv.ext.VNF:
derived_from: tosca.nodes.nfv.VNF
properties:
vnf_type:
type: string
required: false
description: Type of this VNF. For example vFW,vNAT,… etc.
request_reclassification:
type: boolean
required: false
nsh_aware:
type: boolean
required: false
vnfm_type:
type: string
required: true
description: Type of this VNFM, Such as ZTE,HW,JUJU,…
5.2.2 tosca.nodes.nfv.VNF
tosca.nodes.nfv.VNF:
derived_from: tosca.nodes.Root
properties:
id:
type: string
description: ID of this VNF
vendor:
type: string
description: name of the vendor who generate this VNF
version:
type: version
description: version of the software for this VNF
requirements:
- virtualLink:
capability: tosca.capabilities.nfv.VirtualLinkable
5.3
VDU
5.3.1 tosca.nodes.nfv.ext.VDU
tosca.nodes.nfv.ext.VDU:
derived_from: tosca.nodes.nfv.VDU
requirements:
- guest_os:
capability: tosca.capabilities.nfv.ext.GuestOs
node: tosca.nodes.nfv.ext.ImageFile
relationship: tosca.relationships.DependsOn
- block_storage:
capability: tosca.capabilities.Attachment
node: tosca.nodes.BlockStorage
relationship: tosca.relationships.AttachesTo
occurrences: [0, UNBOUNDED]
- dependency:
capability: tosca.capabilities.Node
node: tosca.nodes.nfv.ext.VDU
relationship: tosca.relationships.DependsOn
occurrences: [ 0, UNBOUNDED ]
5.3.2 tosca.nodes.nfv.VDU
tosca.nodes.nfv.VDU:
derived_from: tosca.nodes.Root
capabilities:
nfv_compute:
type: tosca.capabilities.Compute.Container.Architecture
virtualbinding:
type: tosca.capabilities.nfv.VirtualBindable
monitoring_parameter:
type: tosca.capabilities.nfv.Metric
5.3.3 tosca.nodes.nfv.ext.ImageFile
tosca.nodes.nfv.ext.ImageFile:
derived_from: tosca.nodes.Root
properties:
name:
type: string
required: true
description: name of the vendor who generate this VL
version:
type: string
required: true
description: name of the vendor who generate this VL
checksum:
type: string
required: true
description: name of the vendor who generate this VL
disk_format:
type: string
required: true
default: qcow2
description: name of the vendor who generate this VL
constraints:
- valid_values: [ qcow2, raw, vmdk, vhd, vhi, iso, aki, ami, ari, ova ]
file_url:
type: string
required: false
description: name of the vendor who generate this VL
capabilities:
guest_os:
type: tosca.capabilities.nfv.ext.GuestOs
image_fle:
type: tosca.capabilities.nfv.ext.ImageFile
5.3.4 tosca.nodes.nfv.ext.BlockStorage.Local
tosca.nodes.nfv.ext.BlockStorage.Local:
derived_from: tosca.nodes.BlockStorage
description: Local storage information.
properties:
disk_type:
type: string
required: false
default: data
description: Local disk type,only support one swap disk and one boot disk.
constraints:
- valid_values: [ boot, swap, data ]
5.3.5 tosca.nodes.BlockStorage
tosca.nodes.BlockStorage:
derived_from: tosca.nodes.Root
properties:
size:
type: scalar-unit.size
constraints:
- greater_or_equal: 1 MB
volume_id:
type: string
required: false
snapshot_id:
type: string
required: false
attributes:
volume_id:
type: string
capabilities:
attachment:
type: tosca.capabilities.Attachment
5.3.6 tosca.capabilities.Compute.Container.Architecture
tosca.capabilities.Compute.Container.Architecture:
derived_from: tosca.capabilities.Container
properties:
mem_page_size:
type: scalar-unit.size
required: false
constraints:
- [normal, huge]
5.3.7 tosca.capabilities.nfv.ext.ImageFile
tosca.capabilities.nfv.ext.ImageFile:
derived_from: tosca.capabilities.Root
5.3.8 tosca.capabilities.nfv.ext.GuestOs
tosca.capabilities.nfv.ext.GuestOs:
derived_from: tosca.capabilities.Root
5.3.9 tosca.capabilities.Attachment
tosca.capabilities.Attachment:
derived_from: tosca.capabilities.Root
5.3.10 tosca.capabilities.nfv.Metric
tosca.capabilities.nfv.Metric:
derived_from: tosca.capabilities.Root
5.3.11 tosca.relationships.nfv.Monitor
tosca.relationships.nfv.Monitor:
derived_from: tosca.relationships.ConnectsTo
valid_target_types: [ tosca.capabilities.nfv.Metric]
5.4
Networking
5.4.1 tosca.nodes.nfv.ext.CP
tosca.nodes.nfv.ext.CP:
derived_from: tosca.nodes.nfv.CP
properties:
sfc_encapsulation:
type: string
required: false
constraints:
-valid_values: [ mac, vxlan-gpe, gre, mpls ]
direction:
type: string
required: false
constraints:
- valid_values: [ input, output, bidirectional ]
5.4.2 tosca.nodes.nfv.CP
tosca.nodes.nfv.CP:
derived_from: tosca.nodes.network.Port
properties:
type:
type: string
required: false
anti_spoof_protection:
type: boolean
required: false
requirements:
- virtualLink:
capability: tosca.capabilities.nfv.VirtualLinkable
relationship: tosca.relationships.nfv.VirtualLinksTo
- virtualbinding:
capability: tosca.capabilities.nfv.VirtualBindable
relationship: tosca.relationships.nfv.VirtualBindsTo
attributes:
address:
type: string
5.4.3
tosca.nodes.network.Port
tosca.nodes.network.Port:
derived_from: tosca.nodes.Root
properties:
ip_address:
type: string
required: false
order:
type: integer
required: true
default: 0
constraints:
- greater_or_equal: 0
is_default:
type: boolean
required: false
default: false
ip_range_start:
type: string
required: false
ip_range_end:
type: string
required: false
requirements:
- link:
capability: tosca.capabilities.network.Linkable
relationship: tosca.relationships.network.LinksTo
- binding:
capability: tosca.capabilities.network.Bindable
relationship: tosca.relationships.network.BindsTo
5.4.4 tosca.nodes.nfv.VL
tosca.nodes.nfv.VL:
derived_from: tosca.nodes.network.Network
properties:
vendor:
type: string
required: true
description: name of the vendor who generate this VL
capabilities:
virtual_linkable:
type: tosca.capabilities.nfv.VirtualLinkable
5.4.5 tosca.nodes.nfv.VL.ELine
tosca.nodes.nfv.VL.ELine:
derived_from: tosca.nodes.nfv.VL
capabilities:
virtual_linkable:
occurrences: 2
5.4.6 tosca.nodes.nfv.VL.ELAN
tosca.nodes.nfv.VL.ELAN:
derived_from: tosca.nodes.nfv.VL
5.4.7 tosca.nodes.nfv.VL.ETree
tosca.nodes.nfv.VL.ETree:
derived_from: tosca.nodes.nfv.VL
5.4.8 tosca.nodes.network.Network
tosca.nodes.network.Network:
derived_from: tosca.nodes.Root
properties:
ip_version:
type: integer
required: false
default: 4
constraints:
- valid_values: [ 4, 6 ]
cidr:
type: string
required: false
start_ip:
type: string
required: false
end_ip:
type: string
required: false
gateway_ip:
type: string
required: false
network_name:
type: string
required: false
network_id:
type: string
required: false
segmentation_id:
type: string
required: false
network_type:
type: string
required: false
physical_network:
type: string
required: false
capabilities:
link:
type: tosca.capabilities.network.Linkable
5.4.9 tosca.capabilities.nfv.VirtualLinkable
tosca.capabilities.nfv.VirtualLinkable:
derived_from: tosca.capabilities.Node
5.4.10 tosca.capabilities.network.Linkable
tosca.capabilities.network.Linkable:
derived_from: tosca.capabilities.Node
5.4.11 tosca.capabilities.nfv.VirtualBindable
tosca.capabilities.nfv.VirtualBindable:
derived_from: tosca.capabilities.Node
5.4.12 tosca.capabilities.network.Bindable
tosca.capabilities.network.Bindable:
derived_from: tosca.capabilities.Node
5.4.13 tosca.relationships.nfv.VirtualLinksTo
tosca.relationships.nfv.VirtualLinksTo:
derived_from: tosca.relationships.DependsOn
valid_target_types: [ tosca.capabilities.nfv.VirtualLinkable ]
5.4.14 tosca.relationships.network.LinksTo
tosca.relationships.network.LinksTo:
derived_from: tosca.relationships.DependsOn
valid_target_types: [ tosca.capabilities.network.Linkable ]
5.4.15 tosca.relationships.nfv.VirtualBindsTo
tosca.relationships.nfv.VirtualBindsTo:
derived_from: tosca.relationships.DependsOn
valid_target_types: [ tosca .capabilities.nfv.VirtualBindable]
5.4.16 tosca.relationships.network.BindsTo
tosca.relationships.network.BindsTo:
derived_from: tosca.relationships.DependsOn
valid_target_types: [ tosca.capabilities.network.Bindable ]
6. VNFD Example
tosca_definitions_version: tosca_simple_profile_for_nfv_1_0
description: example for VNF2
metadata:
id: ZTE-vFW-1.0
vendor: zte
version: 1.0
vnfd_version: 1.1
name: vFW_TIC_Edge
vnf_type: vFW
request_reclassification: false
nsh_aware: true
vnfm_type: zte
topology_template:
inputs:
# omitted here for brivity
subsititution_mappings:
node_type: tosca.nodes.nfv.ext.VNF
requirements:
virtualLink1: [CP21, virtualLink]
capabilities:
forwarder1: [CP21, Forwarder]
node_templates:
image1:
type: tosca.nodes.nfv.ext.ImageFile
properties:
name: centos.img
version: 5.16.11
disk_format: qcow2
file_url: SoftwareImages/centos.img
local_storage1:
type: tosca.nodes.nfv.ext.BlockStorage.Local
properties:
size: 50 GB
disk_type: boot
local_storage2:
type: tosca.nodes.nfv.ext.BlockStorage.Local
properties:
size: 100 GB
disk_type: data
local_storage3:
type: tosca.nodes.nfv.ext.BlockStorage.Local
properties:
size: 1 GB
disk_type: swap
VDU1:
type: tosca.nodes.nfv.ext.VDU
properties:
name:vFW
requirements:
- guest_os: image1
- block_storage: local_storage1
- block_storage: local_storage2
- block_storage: local_storage3
capabilities:
nfv_compute:
num_cpus: 4
mem_size: 4096 MB
Interface:
Standard:
create:vdu1_install.sh
configure:
implementation: vdu1_configure.sh
artifacts:
software_version_file: AppSoftwares/appversion1.zip
VDU2:
type: tosca.nodes.nfv.VDU
properties:
# omitted here for brivity
VDU3:
type: tosca.nodes.nfv.VDU
properties:
# omitted here for brivity
CP21: #endpoints of VNF2
type: tosca.nodes.nfv.ext.CP
properties:
sfc_encapsulation: gre
direction: input
requirements:
virtualbinding: VDU1
CP22:
type: tosca.nodes.nfv.ext.CP
properties:
# omitted here for brivity
requirements:
virtualbinding: VDU1
virtualLink: internal_VL
CP23:
type: tosca.nodes.nfv.ext.CP
properties:
# omitted here for brivity
requirements:
virtualbinding: VDU2
virtualLink: internal_VL
CP24:
type: tosca.nodes.nfv.ext.CP
properties:
# omitted here for brivity
requirements:
virtualbinding: VDU3
virtualLink: internal_VL
internal_VL:
type: tosca.nodes.nfv.VL.ELAN
properties:
name: VL1
vendor: zte
network_type: vlan
capabilities:
- virtual_linkable
occurrences: 5
7. Appendix
7.1
scalar-unit.size
Unit
Usage
Description
B
size
byte
kB
size
kilobyte (1000 bytes)
KiB
size
kibibytes (1024 bytes)
MB
size
megabyte (1000000 bytes)
MiB
size
mebibyte (1048576 bytes)
GB
size
gigabyte (1000000000 bytes)
GiB
size
gibibytes (1073741824 bytes)
TB
size
terabyte (1000000000000 bytes)
TiB
size
tebibyte (1099511627776 bytes)
7.2
scalar-unit.time
Unit
Usage
Description
d
time
days
h
time
hours
m
time
minutes
s
time
seconds
ms
time
milliseconds
us
time
microseconds
ns
time
nanoseconds
7.3
TOSCA version
<major_version>.<minor_version>[.<fix_version>[.<qualifier>[-<build_version
] ] ]
exmaple：
# basic version strings
6.1
2.0.1
# version string with optional qualifier
3.1.0.beta
# version string with optional qualifier and build version
1.0.0.alpha-10