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Version: v0.27

Policies

Limited vCluster Tenancy Configuration Support

This feature is only available when using the following worker node types:

  • Host Nodes
info

Network policies in the virtual cluster rely on the support for this feature in the host cluster. Make sure that your host cluster satisfies the network policy prerequisites.

Policies cover several different topics:

  • Limit ranges control the storage / CPU / memory that each pod may request.
  • Resource quotas.
  • Pod security standards
  • Network policies like network isolation.
  • Admission webhooks
    • Central Admission Control
    • The admission controller is typically running on the host cluster, where the policies enforced by the webhook cannot be changed by the virtual cluster.
    • Users could deploy their own admission webhooks to the virtual cluster, but there's little value in doing so, and this configuration is not concerned with that use case.
    • Some examples of admission controller projects:
    • It's common for organizations to develop an in-house collection of policies that can enforce naming standards etc.

You can use these settings separately for specific cases, or together, as in the case of Isolated Mode.

Config reference​

policies required object ​

Policies to enforce for the virtual cluster deployment as well as within the virtual cluster.

networkPolicy required object ​

NetworkPolicy specifies network policy options.

enabled required boolean false ​

Enabled defines if the network policy should be deployed by vCluster.

fallbackDns required string 8.8.8.8 ​

FallbackDNS is the fallback DNS server to use if the virtual cluster does not have a DNS server.

outgoingConnections required object ​

OutgoingConnections are the outgoing connections options for the vCluster workloads.

ipBlock required object ​

IPBlock describes a particular CIDR (Ex. "192.168.1.0/24","2001:db8::/64") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.

cidr required string 0.0.0.0/0 ​

cidr is a string representing the IPBlock Valid examples are "192.168.1.0/24" or "2001:db8::/64"

except required string[] [100.64.0.0/10 127.0.0.0/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16] ​

except is a slice of CIDRs that should not be included within an IPBlock Valid examples are "192.168.1.0/24" or "2001:db8::/64" Except values will be rejected if they are outside the cidr range

platform required boolean true ​

Platform enables egress access towards loft platform

extraControlPlaneRules required object[] [] ​

ExtraControlPlaneRules are extra allowed rules for the vCluster control plane.

extraWorkloadRules required object[] [] ​

ExtraWorkloadRules are extra allowed rules for the vCluster workloads.

annotations required object {} ​

Annotations are extra annotations for this resource.

labels required object {} ​

Labels are extra labels for this resource.

podSecurityStandard required string ​

PodSecurityStandard that can be enforced can be one of: empty (""), baseline, restricted or privileged

resourceQuota required object ​

ResourceQuota specifies resource quota options.

enabled required string|boolean auto ​

Enabled defines if the resource quota should be enabled. "auto" means that if limitRange is enabled, the resourceQuota will be enabled as well.

quota required object map[count/configmaps:100 count/endpoints:40 count/persistentvolumeclaims:20 count/pods:20 count/secrets:100 count/services:20 limits.cpu:20 limits.ephemeral-storage:160Gi limits.memory:40Gi requests.cpu:10 requests.ephemeral-storage:60Gi requests.memory:20Gi requests.storage:100Gi services.loadbalancers:1 services.nodeports:0] ​

Quota are the quota options

scopeSelector required object map[matchExpressions:[]] ​

ScopeSelector is the resource quota scope selector

scopes required string[] [] ​

Scopes are the resource quota scopes

annotations required object {} ​

Annotations are extra annotations for this resource.

labels required object {} ​

Labels are extra labels for this resource.

limitRange required object ​

LimitRange specifies limit range options.

enabled required string|boolean auto ​

Enabled defines if the limit range should be deployed by vCluster. "auto" means that if resourceQuota is enabled, the limitRange will be enabled as well.

default required object map[cpu:1 ephemeral-storage:8Gi memory:512Mi] ​

Default are the default limits for the limit range

defaultRequest required object map[cpu:100m ephemeral-storage:3Gi memory:128Mi] ​

DefaultRequest are the default request options for the limit range

max required object {} ​

Max are the max limits for the limit range

min required object {} ​

Min are the min limits for the limit range

annotations required object {} ​

Annotations are extra annotations for this resource.

labels required object {} ​

Labels are extra labels for this resource.

centralAdmission required object ​

CentralAdmission defines what validating or mutating webhooks should be enforced within the virtual cluster.

validatingWebhooks required object[] ​

ValidatingWebhooks are validating webhooks that should be enforced in the virtual cluster

kind required 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.

apiVersion required 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.

metadata required object ​

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

name required string ​

Name must be unique within a namespace. Is required when creating resources, although some resources may allow a client to request the generation of an appropriate name automatically. Name is primarily intended for creation idempotence and configuration definition.

labels required object ​

Map of string keys and values that can be used to organize and categorize (scope and select) objects. May match selectors of replication controllers and services.

annotations required object ​

Annotations is an unstructured key value map stored with a resource that may be set by external tools to store and retrieve arbitrary metadata.

webhooks required object[] ​

Webhooks is a list of webhooks and the affected resources and operations.

name required string ​

The name of the admission webhook. Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where "imagepolicy" is the name of the webhook, and kubernetes.io is the name of the organization.

clientConfig required object ​

ClientConfig defines how to communicate with the hook.

url required string ​

URL gives the location of the webhook, in standard URL form (scheme://host:port/path). Exactly one of url or service must be specified.

service required object ​

Service is a reference to the service for this webhook. Either service or url must be specified.

If the webhook is running within the cluster, then you should use service.

namespace required string ​

Namespace is the namespace of the service.

name required string ​

Name is the name of the service.

path required string ​

Path is an optional URL path which will be sent in any request to this service.

port required integer ​

If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. port should be a valid port number (1-65535, inclusive).

caBundle required string ​

CABundle is a PEM encoded CA bundle which will be used to validate the webhook's server certificate. If unspecified, system trust roots on the apiserver are used.

rules required object[] ​

Rules describes what operations on what resources/subresources the webhook cares about. The webhook cares about an operation if it matches any Rule.

failurePolicy required string ​

FailurePolicy defines how unrecognized errors from the admission endpoint are handled - allowed values are Ignore or Fail. Defaults to Fail.

matchPolicy required string ​

matchPolicy defines how the "rules" list is used to match incoming requests. Allowed values are "Exact" or "Equivalent".

namespaceSelector required object ​

NamespaceSelector decides whether to run the webhook on an object based on whether the namespace for that object matches the selector. If the object itself is a namespace, the matching is performed on object.metadata.labels. If the object is another cluster scoped resource, it never skips the webhook.

objectSelector required object ​

ObjectSelector decides whether to run the webhook based on if the object has matching labels. objectSelector is evaluated against both the oldObject and newObject that would be sent to the webhook, and is considered to match if either object matches the selector.

sideEffects required string ​

SideEffects states whether this webhook has side effects.

timeoutSeconds required integer ​

TimeoutSeconds specifies the timeout for this webhook.

admissionReviewVersions required string[] ​

AdmissionReviewVersions is an ordered list of preferred AdmissionReview versions the Webhook expects.

matchConditions required object[] ​

MatchConditions is a list of conditions that must be met for a request to be sent to this webhook. Match conditions filter requests that have already been matched by the rules, namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests. There are a maximum of 64 match conditions allowed.

mutatingWebhooks required object[] ​

MutatingWebhooks are mutating webhooks that should be enforced in the virtual cluster

kind required 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.

apiVersion required 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.

metadata required object ​

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

name required string ​

Name must be unique within a namespace. Is required when creating resources, although some resources may allow a client to request the generation of an appropriate name automatically. Name is primarily intended for creation idempotence and configuration definition.

labels required object ​

Map of string keys and values that can be used to organize and categorize (scope and select) objects. May match selectors of replication controllers and services.

annotations required object ​

Annotations is an unstructured key value map stored with a resource that may be set by external tools to store and retrieve arbitrary metadata.

webhooks required object[] ​

Webhooks is a list of webhooks and the affected resources and operations.

reinvocationPolicy required string ​

reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation. Allowed values are "Never" and "IfNeeded".

name required string ​

The name of the admission webhook. Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where "imagepolicy" is the name of the webhook, and kubernetes.io is the name of the organization.

clientConfig required object ​

ClientConfig defines how to communicate with the hook.

url required string ​

URL gives the location of the webhook, in standard URL form (scheme://host:port/path). Exactly one of url or service must be specified.

service required object ​

Service is a reference to the service for this webhook. Either service or url must be specified.

If the webhook is running within the cluster, then you should use service.

namespace required string ​

Namespace is the namespace of the service.

name required string ​

Name is the name of the service.

path required string ​

Path is an optional URL path which will be sent in any request to this service.

port required integer ​

If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. port should be a valid port number (1-65535, inclusive).

caBundle required string ​

CABundle is a PEM encoded CA bundle which will be used to validate the webhook's server certificate. If unspecified, system trust roots on the apiserver are used.

rules required object[] ​

Rules describes what operations on what resources/subresources the webhook cares about. The webhook cares about an operation if it matches any Rule.

failurePolicy required string ​

FailurePolicy defines how unrecognized errors from the admission endpoint are handled - allowed values are Ignore or Fail. Defaults to Fail.

matchPolicy required string ​

matchPolicy defines how the "rules" list is used to match incoming requests. Allowed values are "Exact" or "Equivalent".

namespaceSelector required object ​

NamespaceSelector decides whether to run the webhook on an object based on whether the namespace for that object matches the selector. If the object itself is a namespace, the matching is performed on object.metadata.labels. If the object is another cluster scoped resource, it never skips the webhook.

objectSelector required object ​

ObjectSelector decides whether to run the webhook based on if the object has matching labels. objectSelector is evaluated against both the oldObject and newObject that would be sent to the webhook, and is considered to match if either object matches the selector.

sideEffects required string ​

SideEffects states whether this webhook has side effects.

timeoutSeconds required integer ​

TimeoutSeconds specifies the timeout for this webhook.

admissionReviewVersions required string[] ​

AdmissionReviewVersions is an ordered list of preferred AdmissionReview versions the Webhook expects.

matchConditions required object[] ​

MatchConditions is a list of conditions that must be met for a request to be sent to this webhook. Match conditions filter requests that have already been matched by the rules, namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests. There are a maximum of 64 match conditions allowed.