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Chapter 17. Network [config.openshift.io/v1]


Description
Network holds cluster-wide information about Network. The canonical name is cluster. It is used to configure the desired network configuration, such as: IP address pools for services/pod IPs, network plugin, etc. Please view network.spec for an explanation on what applies when configuring this resource. Compatibility level 1: Stable within a major release for a minimum of 12 months or 3 minor releases (whichever is longer).
Type
object
Required
  • spec

17.1. Specification

PropertyTypeDescription

apiVersion

string

APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources

kind

string

Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

metadata

ObjectMeta

Standard object’s metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

spec

object

spec holds user settable values for configuration. As a general rule, this SHOULD NOT be read directly. Instead, you should consume the NetworkStatus, as it indicates the currently deployed configuration. Currently, most spec fields are immutable after installation. Please view the individual ones for further details on each.

status

object

status holds observed values from the cluster. They may not be overridden.

17.1.1. .spec

Description
spec holds user settable values for configuration. As a general rule, this SHOULD NOT be read directly. Instead, you should consume the NetworkStatus, as it indicates the currently deployed configuration. Currently, most spec fields are immutable after installation. Please view the individual ones for further details on each.
Type
object
PropertyTypeDescription

clusterNetwork

array

IP address pool to use for pod IPs. This field is immutable after installation.

clusterNetwork[]

object

ClusterNetworkEntry is a contiguous block of IP addresses from which pod IPs are allocated.

externalIP

object

externalIP defines configuration for controllers that affect Service.ExternalIP. If nil, then ExternalIP is not allowed to be set.

networkDiagnostics

object

networkDiagnostics defines network diagnostics configuration. Takes precedence over spec.disableNetworkDiagnostics in network.operator.openshift.io. If networkDiagnostics is not specified or is empty, and the spec.disableNetworkDiagnostics flag in network.operator.openshift.io is set to true, the network diagnostics feature will be disabled.

networkType

string

NetworkType is the plugin that is to be deployed (e.g. OVNKubernetes). This should match a value that the cluster-network-operator understands, or else no networking will be installed. Currently supported values are: - OVNKubernetes This field is immutable after installation.

serviceNetwork

array (string)

IP address pool for services. Currently, we only support a single entry here. This field is immutable after installation.

serviceNodePortRange

string

The port range allowed for Services of type NodePort. If not specified, the default of 30000-32767 will be used. Such Services without a NodePort specified will have one automatically allocated from this range. This parameter can be updated after the cluster is installed.

17.1.2. .spec.clusterNetwork

Description
IP address pool to use for pod IPs. This field is immutable after installation.
Type
array

17.1.3. .spec.clusterNetwork[]

Description
ClusterNetworkEntry is a contiguous block of IP addresses from which pod IPs are allocated.
Type
object
PropertyTypeDescription

cidr

string

The complete block for pod IPs.

hostPrefix

integer

The size (prefix) of block to allocate to each node. If this field is not used by the plugin, it can be left unset.

17.1.4. .spec.externalIP

Description
externalIP defines configuration for controllers that affect Service.ExternalIP. If nil, then ExternalIP is not allowed to be set.
Type
object
PropertyTypeDescription

autoAssignCIDRs

array (string)

autoAssignCIDRs is a list of CIDRs from which to automatically assign Service.ExternalIP. These are assigned when the service is of type LoadBalancer. In general, this is only useful for bare-metal clusters. In Openshift 3.x, this was misleadingly called "IngressIPs". Automatically assigned External IPs are not affected by any ExternalIPPolicy rules. Currently, only one entry may be provided.

policy

object

policy is a set of restrictions applied to the ExternalIP field. If nil or empty, then ExternalIP is not allowed to be set.

17.1.5. .spec.externalIP.policy

Description
policy is a set of restrictions applied to the ExternalIP field. If nil or empty, then ExternalIP is not allowed to be set.
Type
object
PropertyTypeDescription

allowedCIDRs

array (string)

allowedCIDRs is the list of allowed CIDRs.

rejectedCIDRs

array (string)

rejectedCIDRs is the list of disallowed CIDRs. These take precedence over allowedCIDRs.

17.1.6. .spec.networkDiagnostics

Description
networkDiagnostics defines network diagnostics configuration. Takes precedence over spec.disableNetworkDiagnostics in network.operator.openshift.io. If networkDiagnostics is not specified or is empty, and the spec.disableNetworkDiagnostics flag in network.operator.openshift.io is set to true, the network diagnostics feature will be disabled.
Type
object
PropertyTypeDescription

mode

string

mode controls the network diagnostics mode When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is All.

sourcePlacement

object

sourcePlacement controls the scheduling of network diagnostics source deployment See NetworkDiagnosticsSourcePlacement for more details about default values.

targetPlacement

object

targetPlacement controls the scheduling of network diagnostics target daemonset See NetworkDiagnosticsTargetPlacement for more details about default values.

17.1.7. .spec.networkDiagnostics.sourcePlacement

Description
sourcePlacement controls the scheduling of network diagnostics source deployment See NetworkDiagnosticsSourcePlacement for more details about default values.
Type
object
PropertyTypeDescription

nodeSelector

object (string)

nodeSelector is the node selector applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is kubernetes.io/os: linux.

tolerations

array

tolerations is a list of tolerations applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is an empty list.

tolerations[]

object

The pod this Toleration is attached to tolerates any taint that matches the triple <key,value,effect> using the matching operator <operator>.

17.1.8. .spec.networkDiagnostics.sourcePlacement.tolerations

Description
tolerations is a list of tolerations applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is an empty list.
Type
array

17.1.9. .spec.networkDiagnostics.sourcePlacement.tolerations[]

Description
The pod this Toleration is attached to tolerates any taint that matches the triple <key,value,effect> using the matching operator <operator>.
Type
object
PropertyTypeDescription

effect

string

Effect indicates the taint effect to match. Empty means match all taint effects. When specified, allowed values are NoSchedule, PreferNoSchedule and NoExecute.

key

string

Key is the taint key that the toleration applies to. Empty means match all taint keys. If the key is empty, operator must be Exists; this combination means to match all values and all keys.

operator

string

Operator represents a key’s relationship to the value. Valid operators are Exists and Equal. Defaults to Equal. Exists is equivalent to wildcard for value, so that a pod can tolerate all taints of a particular category.

tolerationSeconds

integer

TolerationSeconds represents the period of time the toleration (which must be of effect NoExecute, otherwise this field is ignored) tolerates the taint. By default, it is not set, which means tolerate the taint forever (do not evict). Zero and negative values will be treated as 0 (evict immediately) by the system.

value

string

Value is the taint value the toleration matches to. If the operator is Exists, the value should be empty, otherwise just a regular string.

17.1.10. .spec.networkDiagnostics.targetPlacement

Description
targetPlacement controls the scheduling of network diagnostics target daemonset See NetworkDiagnosticsTargetPlacement for more details about default values.
Type
object
PropertyTypeDescription

nodeSelector

object (string)

nodeSelector is the node selector applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is kubernetes.io/os: linux.

tolerations

array

tolerations is a list of tolerations applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is - operator: "Exists" which means that all taints are tolerated.

tolerations[]

object

The pod this Toleration is attached to tolerates any taint that matches the triple <key,value,effect> using the matching operator <operator>.

17.1.11. .spec.networkDiagnostics.targetPlacement.tolerations

Description
tolerations is a list of tolerations applied to network diagnostics components When omitted, this means the user has no opinion and the platform is left to choose reasonable defaults. These defaults are subject to change over time. The current default is - operator: "Exists" which means that all taints are tolerated.
Type
array

17.1.12. .spec.networkDiagnostics.targetPlacement.tolerations[]

Description
The pod this Toleration is attached to tolerates any taint that matches the triple <key,value,effect> using the matching operator <operator>.
Type
object
PropertyTypeDescription

effect

string

Effect indicates the taint effect to match. Empty means match all taint effects. When specified, allowed values are NoSchedule, PreferNoSchedule and NoExecute.

key

string

Key is the taint key that the toleration applies to. Empty means match all taint keys. If the key is empty, operator must be Exists; this combination means to match all values and all keys.

operator

string

Operator represents a key’s relationship to the value. Valid operators are Exists and Equal. Defaults to Equal. Exists is equivalent to wildcard for value, so that a pod can tolerate all taints of a particular category.

tolerationSeconds

integer

TolerationSeconds represents the period of time the toleration (which must be of effect NoExecute, otherwise this field is ignored) tolerates the taint. By default, it is not set, which means tolerate the taint forever (do not evict). Zero and negative values will be treated as 0 (evict immediately) by the system.

value

string

Value is the taint value the toleration matches to. If the operator is Exists, the value should be empty, otherwise just a regular string.

17.1.13. .status

Description
status holds observed values from the cluster. They may not be overridden.
Type
object
PropertyTypeDescription

clusterNetwork

array

IP address pool to use for pod IPs.

clusterNetwork[]

object

ClusterNetworkEntry is a contiguous block of IP addresses from which pod IPs are allocated.

clusterNetworkMTU

integer

ClusterNetworkMTU is the MTU for inter-pod networking.

conditions

array

conditions represents the observations of a network.config current state. Known .status.conditions.type are: "NetworkDiagnosticsAvailable"

conditions[]

object

Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo’s current state. // Known .status.conditions.type are: "Available", "Progressing", and "Degraded" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition json:"conditions,omitempty" patchStrategy:"merge" patchMergeKey:"type" protobuf:"bytes,1,rep,name=conditions" // other fields }

migration

object

Migration contains the cluster network migration configuration.

networkType

string

NetworkType is the plugin that is deployed (e.g. OVNKubernetes).

serviceNetwork

array (string)

IP address pool for services. Currently, we only support a single entry here.

17.1.14. .status.clusterNetwork

Description
IP address pool to use for pod IPs.
Type
array

17.1.15. .status.clusterNetwork[]

Description
ClusterNetworkEntry is a contiguous block of IP addresses from which pod IPs are allocated.
Type
object
PropertyTypeDescription

cidr

string

The complete block for pod IPs.

hostPrefix

integer

The size (prefix) of block to allocate to each node. If this field is not used by the plugin, it can be left unset.

17.1.16. .status.conditions

Description
conditions represents the observations of a network.config current state. Known .status.conditions.type are: "NetworkDiagnosticsAvailable"
Type
array

17.1.17. .status.conditions[]

Description
Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo’s current state. // Known .status.conditions.type are: "Available", "Progressing", and "Degraded" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition json:"conditions,omitempty" patchStrategy:"merge" patchMergeKey:"type" protobuf:"bytes,1,rep,name=conditions" // other fields }
Type
object
Required
  • lastTransitionTime
  • message
  • reason
  • status
  • type
PropertyTypeDescription

lastTransitionTime

string

lastTransitionTime is the last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.

message

string

message is a human readable message indicating details about the transition. This may be an empty string.

observedGeneration

integer

observedGeneration represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date with respect to the current state of the instance.

reason

string

reason contains a programmatic identifier indicating the reason for the condition’s last transition. Producers of specific condition types may define expected values and meanings for this field, and whether the values are considered a guaranteed API. The value should be a CamelCase string. This field may not be empty.

status

string

status of the condition, one of True, False, Unknown.

type

string

type of condition in CamelCase or in foo.example.com/CamelCase. --- Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important. The regex it matches is (dns1123SubdomainFmt/)?(qualifiedNameFmt)

17.1.18. .status.migration

Description
Migration contains the cluster network migration configuration.
Type
object
PropertyTypeDescription

mtu

object

MTU is the MTU configuration that is being deployed.

networkType

string

NetworkType is the target plugin that is being deployed. DEPRECATED: network type migration is no longer supported, so this should always be unset.

17.1.19. .status.migration.mtu

Description
MTU is the MTU configuration that is being deployed.
Type
object
PropertyTypeDescription

machine

object

Machine contains MTU migration configuration for the machine’s uplink.

network

object

Network contains MTU migration configuration for the default network.

17.1.20. .status.migration.mtu.machine

Description
Machine contains MTU migration configuration for the machine’s uplink.
Type
object
PropertyTypeDescription

from

integer

From is the MTU to migrate from.

to

integer

To is the MTU to migrate to.

17.1.21. .status.migration.mtu.network

Description
Network contains MTU migration configuration for the default network.
Type
object
PropertyTypeDescription

from

integer

From is the MTU to migrate from.

to

integer

To is the MTU to migrate to.

17.2. API endpoints

The following API endpoints are available:

  • /apis/config.openshift.io/v1/networks

    • DELETE: delete collection of Network
    • GET: list objects of kind Network
    • POST: create a Network
  • /apis/config.openshift.io/v1/networks/{name}

    • DELETE: delete a Network
    • GET: read the specified Network
    • PATCH: partially update the specified Network
    • PUT: replace the specified Network

17.2.1. /apis/config.openshift.io/v1/networks

HTTP method
DELETE
Description
delete collection of Network
Table 17.1. HTTP responses
HTTP codeReponse body

200 - OK

Status schema

401 - Unauthorized

Empty

HTTP method
GET
Description
list objects of kind Network
Table 17.2. HTTP responses
HTTP codeReponse body

200 - OK

NetworkList schema

401 - Unauthorized

Empty

HTTP method
POST
Description
create a Network
Table 17.3. Query parameters
ParameterTypeDescription

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 17.4. Body parameters
ParameterTypeDescription

body

Network schema

 
Table 17.5. HTTP responses
HTTP codeReponse body

200 - OK

Network schema

201 - Created

Network schema

202 - Accepted

Network schema

401 - Unauthorized

Empty

17.2.2. /apis/config.openshift.io/v1/networks/{name}

Table 17.6. Global path parameters
ParameterTypeDescription

name

string

name of the Network

HTTP method
DELETE
Description
delete a Network
Table 17.7. Query parameters
ParameterTypeDescription

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

Table 17.8. HTTP responses
HTTP codeReponse body

200 - OK

Status schema

202 - Accepted

Status schema

401 - Unauthorized

Empty

HTTP method
GET
Description
read the specified Network
Table 17.9. HTTP responses
HTTP codeReponse body

200 - OK

Network schema

401 - Unauthorized

Empty

HTTP method
PATCH
Description
partially update the specified Network
Table 17.10. Query parameters
ParameterTypeDescription

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 17.11. HTTP responses
HTTP codeReponse body

200 - OK

Network schema

401 - Unauthorized

Empty

HTTP method
PUT
Description
replace the specified Network
Table 17.12. Query parameters
ParameterTypeDescription

dryRun

string

When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 17.13. Body parameters
ParameterTypeDescription

body

Network schema

 
Table 17.14. HTTP responses
HTTP codeReponse body

200 - OK

Network schema

201 - Created

Network schema

401 - Unauthorized

Empty

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