API Specification¶
Packages:
policy.networking.k8s.io/v1alpha1
Package v1alpha1 contains API Schema definitions for the policy.networking.k8s.io API group.
Resource Types:AdminNetworkPolicy ¶
AdminNetworkPolicy is a cluster level resource that is part of the AdminNetworkPolicy API.
| Field | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|
metadata
Kubernetes meta/v1.ObjectMeta
|
Refer to the Kubernetes API documentation for the fields of the
metadata field.
|
||||||||
spec
AdminNetworkPolicySpec
|
Specification of the desired behavior of AdminNetworkPolicy.
|
||||||||
status
AdminNetworkPolicyStatus
|
(Optional)
Status is the status to be reported by the implementation. |
AdminNetworkPolicyEgressPeer ¶
(Appears on: AdminNetworkPolicyEgressRule)
AdminNetworkPolicyEgressPeer defines a peer to allow traffic to. Exactly one of the selector pointers must be set for a given peer. If a consumer observes none of its fields are set, they must assume an unknown option has been specified and fail closed.
| Field | Description |
|---|---|
namespaces
Kubernetes meta/v1.LabelSelector
|
(Optional)
Namespaces defines a way to select all pods within a set of Namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
pods
NamespacedPod
|
(Optional)
Pods defines a way to select a set of pods in a set of namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
nodes
Kubernetes meta/v1.LabelSelector
|
(Optional)
Nodes defines a way to select a set of nodes in the cluster (based on the node’s labels). It selects the nodeIPs as the peer type by matching on the IPs present in the node.Status.Addresses field of the node. This field follows standard label selector semantics; if present but empty, it selects all Nodes. Support: Extended |
networks
[]CIDR
|
(Optional)
Networks defines a way to select peers via CIDR blocks.
This is intended for representing entities that live outside the cluster,
which can’t be selected by pods, namespaces and nodes peers, but note
that cluster-internal traffic will be checked against the rule as
well. So if you Allow or Deny traffic to Each item in Networks should be provided in the CIDR format and should be IPv4 or IPv6, for example “10.0.0.0/8” or “fd00::/8”. Networks can have upto 25 CIDRs specified. Support: Extended |
domainNames
[]DomainName
|
(Optional)
DomainNames provides a way to specify domain names as peers. DomainNames is only supported for ALLOW rules. In order to control access, DomainNames ALLOW rules should be used with a lower priority egress deny – this allows the admin to maintain an explicit “allowlist” of reachable domains. DomainNames can have up to 25 domain names specified in one rule. Support: Extended |
AdminNetworkPolicyEgressRule ¶
(Appears on: AdminNetworkPolicySpec)
AdminNetworkPolicyEgressRule describes an action to take on a particular set of traffic originating from pods selected by a AdminNetworkPolicy’s Subject field. network-policy-api:experimental:validation
| Field | Description |
|---|---|
name
string
|
(Optional)
Name is an identifier for this rule, that may be no more than 100 characters in length. This field should be used by the implementation to help improve observability, readability and error-reporting for any applied AdminNetworkPolicies. Support: Core |
action
AdminNetworkPolicyRuleAction
|
Action specifies the effect this rule will have on matching traffic. Currently the following actions are supported: Allow: allows the selected traffic (even if it would otherwise have been denied by NetworkPolicy) Deny: denies the selected traffic Pass: instructs the selected traffic to skip any remaining ANP rules, and then pass execution to any NetworkPolicies that select the pod. If the pod is not selected by any NetworkPolicies then execution is passed to any BaselineAdminNetworkPolicies that select the pod. Support: Core |
to
[]AdminNetworkPolicyEgressPeer
|
To is the List of destinations whose traffic this rule applies to. If any AdminNetworkPolicyEgressPeer matches the destination of outgoing traffic then the specified action is applied. This field must be defined and contain at least one item. Support: Core |
ports
[]sigs.k8s.io/network-policy-api/apis/v1alpha1.AdminNetworkPolicyPort
|
(Optional)
Ports allows for matching traffic based on port and protocols. This field is a list of destination ports for the outgoing egress traffic. If Ports is not set then the rule does not filter traffic via port. Support: Core |
AdminNetworkPolicyIngressPeer ¶
(Appears on: AdminNetworkPolicyIngressRule, BaselineAdminNetworkPolicyIngressRule)
AdminNetworkPolicyIngressPeer defines an in-cluster peer to allow traffic from. Exactly one of the selector pointers must be set for a given peer. If a consumer observes none of its fields are set, they must assume an unknown option has been specified and fail closed.
| Field | Description |
|---|---|
namespaces
Kubernetes meta/v1.LabelSelector
|
(Optional)
Namespaces defines a way to select all pods within a set of Namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
pods
NamespacedPod
|
(Optional)
Pods defines a way to select a set of pods in a set of namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
AdminNetworkPolicyIngressRule ¶
(Appears on: AdminNetworkPolicySpec)
AdminNetworkPolicyIngressRule describes an action to take on a particular set of traffic destined for pods selected by an AdminNetworkPolicy’s Subject field.
| Field | Description |
|---|---|
name
string
|
(Optional)
Name is an identifier for this rule, that may be no more than 100 characters in length. This field should be used by the implementation to help improve observability, readability and error-reporting for any applied AdminNetworkPolicies. Support: Core |
action
AdminNetworkPolicyRuleAction
|
Action specifies the effect this rule will have on matching traffic. Currently the following actions are supported: Allow: allows the selected traffic (even if it would otherwise have been denied by NetworkPolicy) Deny: denies the selected traffic Pass: instructs the selected traffic to skip any remaining ANP rules, and then pass execution to any NetworkPolicies that select the pod. If the pod is not selected by any NetworkPolicies then execution is passed to any BaselineAdminNetworkPolicies that select the pod. Support: Core |
from
[]AdminNetworkPolicyIngressPeer
|
From is the list of sources whose traffic this rule applies to. If any AdminNetworkPolicyIngressPeer matches the source of incoming traffic then the specified action is applied. This field must be defined and contain at least one item. Support: Core |
ports
[]sigs.k8s.io/network-policy-api/apis/v1alpha1.AdminNetworkPolicyPort
|
(Optional)
Ports allows for matching traffic based on port and protocols. This field is a list of ports which should be matched on the pods selected for this policy i.e the subject of the policy. So it matches on the destination port for the ingress traffic. If Ports is not set then the rule does not filter traffic via port. Support: Core |
AdminNetworkPolicyPort ¶
AdminNetworkPolicyPort describes how to select network ports on pod(s). Exactly one field must be set.
| Field | Description |
|---|---|
portNumber
Port
|
(Optional)
Port selects a port on a pod(s) based on number. Support: Core |
namedPort
string
|
(Optional)
NamedPort selects a port on a pod(s) based on name. Support: Extended |
portRange
PortRange
|
(Optional)
PortRange selects a port range on a pod(s) based on provided start and end values. Support: Core |
AdminNetworkPolicyRuleAction
(string alias)¶
(Appears on: AdminNetworkPolicyEgressRule, AdminNetworkPolicyIngressRule)
AdminNetworkPolicyRuleAction string describes the AdminNetworkPolicy action type.
Support: Core
| Value | Description |
|---|---|
"Allow" |
AdminNetworkPolicyRuleActionAllow indicates that matching traffic will be allowed regardless of NetworkPolicy and BaselineAdminNetworkPolicy rules. Users cannot block traffic which has been matched by an “Allow” rule in an AdminNetworkPolicy. |
"Deny" |
AdminNetworkPolicyRuleActionDeny indicates that matching traffic will be denied before being checked against NetworkPolicy or BaselineAdminNetworkPolicy rules. Pods will never receive traffic which has been matched by a “Deny” rule in an AdminNetworkPolicy. |
"Pass" |
AdminNetworkPolicyRuleActionPass indicates that matching traffic will bypass further AdminNetworkPolicy processing (ignoring rules with lower precedence) and be allowed or denied based on NetworkPolicy and BaselineAdminNetworkPolicy rules. |
AdminNetworkPolicySpec ¶
(Appears on: AdminNetworkPolicy)
AdminNetworkPolicySpec defines the desired state of AdminNetworkPolicy.
| Field | Description |
|---|---|
priority
int32
|
Priority is a value from 0 to 1000. Policies with lower priority values have higher precedence, and are checked before policies with higher priority values. All AdminNetworkPolicy rules have higher precedence than NetworkPolicy or BaselineAdminNetworkPolicy rules Every AdminNetworkPolicy should have a unique priority value; if two (or more) policies with the same priority could both match a connection, then the implementation can apply any of the matching policies to the connection, and there is no way for the user to reliably determine which one it will choose. Support: Core |
subject
AdminNetworkPolicySubject
|
Subject defines the pods to which this AdminNetworkPolicy applies. Note that host-networked pods are not included in subject selection. Support: Core |
ingress
[]AdminNetworkPolicyIngressRule
|
(Optional)
Ingress is the list of Ingress rules to be applied to the selected pods. A total of 100 rules will be allowed in each ANP instance. The relative precedence of ingress rules within a single ANP object (all of which share the priority) will be determined by the order in which the rule is written. Thus, a rule that appears at the top of the ingress rules would take the highest precedence. ANPs with no ingress rules do not affect ingress traffic. Support: Core |
egress
[]AdminNetworkPolicyEgressRule
|
(Optional)
Egress is the list of Egress rules to be applied to the selected pods. A total of 100 rules will be allowed in each ANP instance. The relative precedence of egress rules within a single ANP object (all of which share the priority) will be determined by the order in which the rule is written. Thus, a rule that appears at the top of the egress rules would take the highest precedence. ANPs with no egress rules do not affect egress traffic. Support: Core |
AdminNetworkPolicyStatus ¶
(Appears on: AdminNetworkPolicy)
AdminNetworkPolicyStatus defines the observed state of AdminNetworkPolicy.
| Field | Description |
|---|---|
conditions
[]Kubernetes meta/v1.Condition
|
AdminNetworkPolicySubject ¶
(Appears on: AdminNetworkPolicySpec, BaselineAdminNetworkPolicySpec)
AdminNetworkPolicySubject defines what resources the policy applies to. Exactly one field must be set.
| Field | Description |
|---|---|
namespaces
Kubernetes meta/v1.LabelSelector
|
(Optional)
Namespaces is used to select pods via namespace selectors. |
pods
NamespacedPod
|
(Optional)
Pods is used to select pods via namespace AND pod selectors. |
BaselineAdminNetworkPolicy ¶
BaselineAdminNetworkPolicy is a cluster level resource that is part of the AdminNetworkPolicy API.
| Field | Description | ||||||
|---|---|---|---|---|---|---|---|
metadata
Kubernetes meta/v1.ObjectMeta
|
Refer to the Kubernetes API documentation for the fields of the
metadata field.
|
||||||
spec
BaselineAdminNetworkPolicySpec
|
Specification of the desired behavior of BaselineAdminNetworkPolicy.
|
||||||
status
BaselineAdminNetworkPolicyStatus
|
(Optional)
Status is the status to be reported by the implementation. |
BaselineAdminNetworkPolicyEgressPeer ¶
(Appears on: BaselineAdminNetworkPolicyEgressRule)
BaselineAdminNetworkPolicyEgressPeer defines a peer to allow traffic to. Exactly one of the selector pointers must be set for a given peer. If a consumer observes none of its fields are set, they must assume an unknown option has been specified and fail closed.
| Field | Description |
|---|---|
namespaces
Kubernetes meta/v1.LabelSelector
|
(Optional)
Namespaces defines a way to select all pods within a set of Namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
pods
NamespacedPod
|
(Optional)
Pods defines a way to select a set of pods in a set of namespaces. Note that host-networked pods are not included in this type of peer. Support: Core |
nodes
Kubernetes meta/v1.LabelSelector
|
(Optional)
Nodes defines a way to select a set of nodes in the cluster (based on the node’s labels). It selects the nodeIPs as the peer type by matching on the IPs present in the node.Status.Addresses field of the node. This field follows standard label selector semantics; if present but empty, it selects all Nodes. Support: Extended |
networks
[]CIDR
|
(Optional)
Networks defines a way to select peers via CIDR blocks.
This is intended for representing entities that live outside the cluster,
which can’t be selected by pods, namespaces and nodes peers, but note
that cluster-internal traffic will be checked against the rule as
well. So if you Allow or Deny traffic to Each item in Networks should be provided in the CIDR format and should be IPv4 or IPv6, for example “10.0.0.0/8” or “fd00::/8”. Networks can have upto 25 CIDRs specified. Support: Extended |
BaselineAdminNetworkPolicyEgressRule ¶
(Appears on: BaselineAdminNetworkPolicySpec)
BaselineAdminNetworkPolicyEgressRule describes an action to take on a particular set of traffic originating from pods selected by a BaselineAdminNetworkPolicy’s Subject field. network-policy-api:experimental:validation
| Field | Description |
|---|---|
name
string
|
(Optional)
Name is an identifier for this rule, that may be no more than 100 characters in length. This field should be used by the implementation to help improve observability, readability and error-reporting for any applied BaselineAdminNetworkPolicies. Support: Core |
action
BaselineAdminNetworkPolicyRuleAction
|
Action specifies the effect this rule will have on matching traffic. Currently the following actions are supported: Allow: allows the selected traffic Deny: denies the selected traffic Support: Core |
to
[]BaselineAdminNetworkPolicyEgressPeer
|
To is the list of destinations whose traffic this rule applies to. If any BaselineAdminNetworkPolicyEgressPeer matches the destination of outgoing traffic then the specified action is applied. This field must be defined and contain at least one item. Support: Core |
ports
[]sigs.k8s.io/network-policy-api/apis/v1alpha1.AdminNetworkPolicyPort
|
(Optional)
Ports allows for matching traffic based on port and protocols. This field is a list of destination ports for the outgoing egress traffic. If Ports is not set then the rule does not filter traffic via port. |
BaselineAdminNetworkPolicyIngressRule ¶
(Appears on: BaselineAdminNetworkPolicySpec)
BaselineAdminNetworkPolicyIngressRule describes an action to take on a particular set of traffic destined for pods selected by a BaselineAdminNetworkPolicy’s Subject field.
| Field | Description |
|---|---|
name
string
|
(Optional)
Name is an identifier for this rule, that may be no more than 100 characters in length. This field should be used by the implementation to help improve observability, readability and error-reporting for any applied BaselineAdminNetworkPolicies. Support: Core |
action
BaselineAdminNetworkPolicyRuleAction
|
Action specifies the effect this rule will have on matching traffic. Currently the following actions are supported: Allow: allows the selected traffic Deny: denies the selected traffic Support: Core |
from
[]AdminNetworkPolicyIngressPeer
|
From is the list of sources whose traffic this rule applies to. If any AdminNetworkPolicyIngressPeer matches the source of incoming traffic then the specified action is applied. This field must be defined and contain at least one item. Support: Core |
ports
[]sigs.k8s.io/network-policy-api/apis/v1alpha1.AdminNetworkPolicyPort
|
(Optional)
Ports allows for matching traffic based on port and protocols. This field is a list of ports which should be matched on the pods selected for this policy i.e the subject of the policy. So it matches on the destination port for the ingress traffic. If Ports is not set then the rule does not filter traffic via port. Support: Core |
BaselineAdminNetworkPolicyRuleAction
(string alias)¶
(Appears on: BaselineAdminNetworkPolicyEgressRule, BaselineAdminNetworkPolicyIngressRule)
BaselineAdminNetworkPolicyRuleAction string describes the BaselineAdminNetworkPolicy action type.
Support: Core
| Value | Description |
|---|---|
"Allow" |
BaselineAdminNetworkPolicyRuleActionAllow enables admins to allow certain traffic. |
"Deny" |
BaselineAdminNetworkPolicyRuleActionDeny enables admins to deny traffic. |
BaselineAdminNetworkPolicySpec ¶
(Appears on: BaselineAdminNetworkPolicy)
BaselineAdminNetworkPolicySpec defines the desired state of BaselineAdminNetworkPolicy.
| Field | Description |
|---|---|
subject
AdminNetworkPolicySubject
|
Subject defines the pods to which this BaselineAdminNetworkPolicy applies. Note that host-networked pods are not included in subject selection. Support: Core |
ingress
[]BaselineAdminNetworkPolicyIngressRule
|
(Optional)
Ingress is the list of Ingress rules to be applied to the selected pods if they are not matched by any AdminNetworkPolicy or NetworkPolicy rules. A total of 100 Ingress rules will be allowed in each BANP instance. The relative precedence of ingress rules within a single BANP object will be determined by the order in which the rule is written. Thus, a rule that appears at the top of the ingress rules would take the highest precedence. BANPs with no ingress rules do not affect ingress traffic. Support: Core |
egress
[]BaselineAdminNetworkPolicyEgressRule
|
(Optional)
Egress is the list of Egress rules to be applied to the selected pods if they are not matched by any AdminNetworkPolicy or NetworkPolicy rules. A total of 100 Egress rules will be allowed in each BANP instance. The relative precedence of egress rules within a single BANP object will be determined by the order in which the rule is written. Thus, a rule that appears at the top of the egress rules would take the highest precedence. BANPs with no egress rules do not affect egress traffic. Support: Core |
BaselineAdminNetworkPolicyStatus ¶
(Appears on: BaselineAdminNetworkPolicy)
BaselineAdminNetworkPolicyStatus defines the observed state of BaselineAdminNetworkPolicy.
| Field | Description |
|---|---|
conditions
[]Kubernetes meta/v1.Condition
|
CIDR
(string alias)¶
(Appears on: AdminNetworkPolicyEgressPeer, BaselineAdminNetworkPolicyEgressPeer)
CIDR is an IP address range in CIDR notation (for example, “10.0.0.0/8” or “fd00::/8”).
DomainName
(string alias)¶
(Appears on: AdminNetworkPolicyEgressPeer)
DomainName describes one or more domain names to be used as a peer.
DomainName can be an exact match, or use the wildcard specifier ‘*’ to match one or more labels.
‘’, the wildcard specifier, matches one or more entire labels. It does not support partial matches. ‘’ may only be specified as a prefix.
Examples:
- kubernetes.io matches only kubernetes.io.
It does not match “www.kubernetes.io”, “blog.kubernetes.io”,
“my-kubernetes.io”, or “wikipedia.org”.
- blog.kubernetes.io matches only “blog.kubernetes.io”.
It does not match “www.kubernetes.io” or “kubernetes.io”.
- *.kubernetes.io matches subdomains of kubernetes.io.
“www.kubernetes.io”, “blog.kubernetes.io”, and
“latest.blog.kubernetes.io” match, however “kubernetes.io”, and
“wikipedia.org” do not.
NamespacedPod ¶
(Appears on: AdminNetworkPolicyEgressPeer, AdminNetworkPolicyIngressPeer, AdminNetworkPolicySubject, BaselineAdminNetworkPolicyEgressPeer)
NamespacedPod allows the user to select a given set of pod(s) in selected namespace(s).
| Field | Description |
|---|---|
namespaceSelector
Kubernetes meta/v1.LabelSelector
|
NamespaceSelector follows standard label selector semantics; if empty, it selects all Namespaces. |
podSelector
Kubernetes meta/v1.LabelSelector
|
PodSelector is used to explicitly select pods within a namespace; if empty, it selects all Pods. |
Port ¶
(Appears on: AdminNetworkPolicyPort)
| Field | Description |
|---|---|
protocol
Kubernetes core/v1.Protocol
|
Protocol is the network protocol (TCP, UDP, or SCTP) which traffic must match. If not specified, this field defaults to TCP. Support: Core |
port
int32
|
Number defines a network port value. Support: Core |
PortRange ¶
(Appears on: AdminNetworkPolicyPort)
PortRange defines an inclusive range of ports from the the assigned Start value to End value.
| Field | Description |
|---|---|
protocol
Kubernetes core/v1.Protocol
|
Protocol is the network protocol (TCP, UDP, or SCTP) which traffic must match. If not specified, this field defaults to TCP. Support: Core |
start
int32
|
Start defines a network port that is the start of a port range, the Start value must be less than End. Support: Core |
end
int32
|
End defines a network port that is the end of a port range, the End value must be greater than Start. Support: Core |
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