NetworkPolicy describes what network traffic is allowed for a set of Pods

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 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

NetworkPolicySpec provides the specification of a NetworkPolicy

NetworkPolicyEgressRule describes a particular set of traffic that is allowed out of pods matched by a NetworkPolicySpec's podSelector. The traffic must match both ports and to. This type is beta-level in 1.8

List of egress rules to be applied to the selected pods. Outgoing traffic is allowed if there are no NetworkPolicies selecting the pod (and cluster policy otherwise allows the traffic), OR if the traffic matches at least one egress rule across all of the NetworkPolicy objects whose podSelector matches the pod. If this field is empty then this NetworkPolicy limits all outgoing traffic (and serves solely to ensure that the pods it selects are isolated by default). This field is beta-level in 1.8

NetworkPolicyIngressRule describes a particular set of traffic that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The traffic must match both ports and from.

List of ingress rules to be applied to the selected pods. Traffic is allowed to a pod if there are no NetworkPolicies selecting the pod (and cluster policy otherwise allows the traffic), OR if the traffic source is the pod's local node, OR if the traffic matches at least one ingress rule across all of the NetworkPolicy objects whose podSelector matches the pod. If this field is empty then this NetworkPolicy does not allow any traffic (and serves solely to ensure that the pods it selects are isolated by default)

A label selector is a label query over a set of resources. The result of matchLabels and matchExpressions are ANDed. An empty label selector matches all objects. A null label selector matches no objects.

Selects the pods to which this NetworkPolicy object applies. The array of ingress rules is applied to any pods selected by this field. Multiple network policies can select the same set of pods. In this case, the ingress rules for each are combined additively. This field is NOT optional and follows standard label selector semantics. An empty podSelector matches all pods in this namespace.

List of rule types that the NetworkPolicy relates to. Valid options are ["Ingress"], ["Egress"], or ["Ingress", "Egress"]. If this field is not specified, it will default based on the existence of Ingress or Egress rules; policies that contain an Egress section are assumed to affect Egress, and all policies (whether or not they contain an Ingress section) are assumed to affect Ingress. If you want to write an egress-only policy, you must explicitly specify policyTypes [ "Egress" ]. Likewise, if you want to write a policy that specifies that no egress is allowed, you must specify a policyTypes value that include "Egress" (since such a policy would not include an Egress section and would otherwise default to just [ "Ingress" ]). This field is beta-level in 1.8

Specification of the desired behavior for this NetworkPolicy.

NetworkPolicyStatus describe the current state of the NetworkPolicy.

Condition contains details for one aspect of the current state of this API Resource.

Conditions holds an array of metav1.Condition that describe the state of the NetworkPolicy. Current service state

Status is the current state of the NetworkPolicy. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

This network policy denies ingress traffic to all pods in a namespace

Deny all ingress by default

1. Deny all ingress by default

This network policy explicitly allow all incoming connections to all pods in a namespace

Allow all ingress policy by default

2. Allow all ingress policy by default

This network policy denies egress traffic from all pods in a namespace

Deny all egress by default

3. Deny all egress by default

This network policy explicitly allows all outgoing connections from pods in that namespace

Allow all egress by default

4. Allow all egress by default

This network policy disallows all ingress and egress traffic to and from all pods in a namespace

Isolate a namespace from other namespaces

5. Isolate a namespace from other namespaces

This network policy controls ingress and egress traffic for pods with the label role=db in the public-api namespace. The policy allows traffic from pods within a specific CIDR, or pods with label role=frontend, or pods in namespaces with label project=myproject. The policy also allows traffic to CIDR 10.0.0.0/24 on port 5978.

networking.k8s.io/v1 · Namespaced Resource

NetworkPolicy

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