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/ *
Copyright The Kubernetes Authors.
Licensed under the Apache License , Version 2.0 ( the "License" ) ;
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http : //www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing , software
distributed under the License is distributed on an "AS IS" BASIS ,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
* /
// This file was autogenerated by go-to-protobuf. Do not edit it manually!
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syntax = "proto2" ;
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package k8s . io.api.admissionregistration.v1beta1 ;
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import "k8s.io/api/admissionregistration/v1/generated.proto" ;
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import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto" ;
import "k8s.io/apimachinery/pkg/runtime/generated.proto" ;
import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto" ;
// Package-wide variables from generator "generated".
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option go_package = "k8s.io/api/admissionregistration/v1beta1" ;
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// AuditAnnotation describes how to produce an audit annotation for an API request.
message AuditAnnotation {
// key specifies the audit annotation key. The audit annotation keys of
// a ValidatingAdmissionPolicy must be unique. The key must be a qualified
// name ([A-Za-z0-9][-A-Za-z0-9_.]*) no more than 63 bytes in length.
//
// The key is combined with the resource name of the
// ValidatingAdmissionPolicy to construct an audit annotation key:
// "{ValidatingAdmissionPolicy name}/{key}".
//
// If an admission webhook uses the same resource name as this ValidatingAdmissionPolicy
// and the same audit annotation key, the annotation key will be identical.
// In this case, the first annotation written with the key will be included
// in the audit event and all subsequent annotations with the same key
// will be discarded.
//
// Required.
optional string key = 1 ;
// valueExpression represents the expression which is evaluated by CEL to
// produce an audit annotation value. The expression must evaluate to either
// a string or null value. If the expression evaluates to a string, the
// audit annotation is included with the string value. If the expression
// evaluates to null or empty string the audit annotation will be omitted.
// The valueExpression may be no longer than 5kb in length.
// If the result of the valueExpression is more than 10kb in length, it
// will be truncated to 10kb.
//
// If multiple ValidatingAdmissionPolicyBinding resources match an
// API request, then the valueExpression will be evaluated for
// each binding. All unique values produced by the valueExpressions
// will be joined together in a comma-separated list.
//
// Required.
optional string valueExpression = 2 ;
}
// ExpressionWarning is a warning information that targets a specific expression.
message ExpressionWarning {
// The path to the field that refers the expression.
// For example, the reference to the expression of the first item of
// validations is "spec.validations[0].expression"
optional string fieldRef = 2 ;
// The content of type checking information in a human-readable form.
// Each line of the warning contains the type that the expression is checked
// against, followed by the type check error from the compiler.
optional string warning = 3 ;
}
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// MatchCondition represents a condition which must be fulfilled for a request to be sent to a webhook.
message MatchCondition {
// Name is an identifier for this match condition, used for strategic merging of MatchConditions,
// as well as providing an identifier for logging purposes. A good name should be descriptive of
// the associated expression.
// Name must be a qualified name consisting of alphanumeric characters, '-', '_' or '.', and
// must start and end with an alphanumeric character (e.g. 'MyName', or 'my.name', or
// '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]') with an
// optional DNS subdomain prefix and '/' (e.g. 'example.com/MyName')
//
// Required.
optional string name = 1 ;
// Expression represents the expression which will be evaluated by CEL. Must evaluate to bool.
// CEL expressions have access to the contents of the AdmissionRequest and Authorizer, organized into CEL variables:
//
// 'object' - The object from the incoming request. The value is null for DELETE requests.
// 'oldObject' - The existing object. The value is null for CREATE requests.
// 'request' - Attributes of the admission request(/pkg/apis/admission/types.go#AdmissionRequest).
// 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.
// See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz
// 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the
// request resource.
// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
//
// Required.
optional string expression = 2 ;
}
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// MatchResources decides whether to run the admission control policy on an object based
// on whether it meets the match criteria.
// The exclude rules take precedence over include rules (if a resource matches both, it is excluded)
// +structType=atomic
message MatchResources {
// NamespaceSelector decides whether to run the admission control policy 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 policy.
//
// For example, to run the webhook on any objects whose namespace is not
// associated with "runlevel" of "0" or "1"; you will set the selector as
// follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "runlevel",
// "operator": "NotIn",
// "values": [
// "0",
// "1"
// ]
// }
// ]
// }
//
// If instead you want to only run the policy on any objects whose
// namespace is associated with the "environment" of "prod" or "staging";
// you will set the selector as follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "environment",
// "operator": "In",
// "values": [
// "prod",
// "staging"
// ]
// }
// ]
// }
//
// See
// https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
// for more examples of label selectors.
//
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 1 ;
// ObjectSelector decides whether to run the validation based on if the
// object has matching labels. objectSelector is evaluated against both
// the oldObject and newObject that would be sent to the cel validation, and
// is considered to match if either object matches the selector. A null
// object (oldObject in the case of create, or newObject in the case of
// delete) or an object that cannot have labels (like a
// DeploymentRollback or a PodProxyOptions object) is not considered to
// match.
// Use the object selector only if the webhook is opt-in, because end
// users may skip the admission webhook by setting the labels.
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 2 ;
// ResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy matches.
// The policy cares about an operation if it matches _any_ Rule.
// +listType=atomic
// +optional
repeated NamedRuleWithOperations resourceRules = 3 ;
// ExcludeResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy should not care about.
// The exclude rules take precedence over include rules (if a resource matches both, it is excluded)
// +listType=atomic
// +optional
repeated NamedRuleWithOperations excludeResourceRules = 4 ;
// matchPolicy defines how the "MatchResources" list is used to match incoming requests.
// Allowed values are "Exact" or "Equivalent".
//
// - Exact: match a request only if it exactly matches a specified rule.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the ValidatingAdmissionPolicy.
//
// - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the ValidatingAdmissionPolicy.
//
// Defaults to "Equivalent"
// +optional
optional string matchPolicy = 7 ;
}
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// MutatingWebhook describes an admission webhook and the resources and operations it applies to.
message MutatingWebhook {
// 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.
// Required.
optional string name = 1 ;
// ClientConfig defines how to communicate with the hook.
// Required
optional WebhookClientConfig clientConfig = 2 ;
// Rules describes what operations on what resources/subresources the webhook cares about.
// The webhook cares about an operation if it matches _any_ Rule.
// However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
// from putting the cluster in a state which cannot be recovered from without completely
// disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
// on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
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repeated k8s.io.api.admissionregistration.v1.RuleWithOperations rules = 3 ;
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// FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
// allowed values are Ignore or Fail. Defaults to Ignore.
// +optional
optional string failurePolicy = 4 ;
// matchPolicy defines how the "rules" list is used to match incoming requests.
// Allowed values are "Exact" or "Equivalent".
//
// - Exact: match a request only if it exactly matches a specified rule.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
//
// - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
//
// Defaults to "Exact"
// +optional
optional string matchPolicy = 9 ;
// 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.
//
// For example, to run the webhook on any objects whose namespace is not
// associated with "runlevel" of "0" or "1"; you will set the selector as
// follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "runlevel",
// "operator": "NotIn",
// "values": [
// "0",
// "1"
// ]
// }
// ]
// }
//
// If instead you want to only run the webhook on any objects whose
// namespace is associated with the "environment" of "prod" or "staging";
// you will set the selector as follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "environment",
// "operator": "In",
// "values": [
// "prod",
// "staging"
// ]
// }
// ]
// }
//
// See
// https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
// for more examples of label selectors.
//
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 5 ;
// 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. A null
// object (oldObject in the case of create, or newObject in the case of
// delete) or an object that cannot have labels (like a
// DeploymentRollback or a PodProxyOptions object) is not considered to
// match.
// Use the object selector only if the webhook is opt-in, because end
// users may skip the admission webhook by setting the labels.
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 11 ;
// SideEffects states whether this webhook has side effects.
// Acceptable values are: Unknown, None, Some, NoneOnDryRun
// Webhooks with side effects MUST implement a reconciliation system, since a request may be
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// rejected by a future step in the admission chain and the side effects therefore need to be undone.
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// Requests with the dryRun attribute will be auto-rejected if they match a webhook with
// sideEffects == Unknown or Some. Defaults to Unknown.
// +optional
optional string sideEffects = 6 ;
// TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
// the webhook call will be ignored or the API call will fail based on the
// failure policy.
// The timeout value must be between 1 and 30 seconds.
// Default to 30 seconds.
// +optional
optional int32 timeoutSeconds = 7 ;
// AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
// versions the Webhook expects. API server will try to use first version in
// the list which it supports. If none of the versions specified in this list
// supported by API server, validation will fail for this object.
// If a persisted webhook configuration specifies allowed versions and does not
// include any versions known to the API Server, calls to the webhook will fail
// and be subject to the failure policy.
// Default to `['v1beta1']`.
// +optional
repeated string admissionReviewVersions = 8 ;
// reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation.
// Allowed values are "Never" and "IfNeeded".
//
// Never: the webhook will not be called more than once in a single admission evaluation.
//
// IfNeeded: the webhook will be called at least one additional time as part of the admission evaluation
// if the object being admitted is modified by other admission plugins after the initial webhook call.
// Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
// Note:
// * the number of additional invocations is not guaranteed to be exactly one.
// * if additional invocations result in further modifications to the object, webhooks are not guaranteed to be invoked again.
// * webhooks that use this option may be reordered to minimize the number of additional invocations.
// * to validate an object after all mutations are guaranteed complete, use a validating admission webhook instead.
//
// Defaults to "Never".
// +optional
optional string reinvocationPolicy = 10 ;
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// 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.
//
// The exact matching logic is (in order):
// 1. If ANY matchCondition evaluates to FALSE, the webhook is skipped.
// 2. If ALL matchConditions evaluate to TRUE, the webhook is called.
// 3. If any matchCondition evaluates to an error (but none are FALSE):
// - If failurePolicy=Fail, reject the request
// - If failurePolicy=Ignore, the error is ignored and the webhook is skipped
//
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// This is a beta feature and managed by the AdmissionWebhookMatchConditions feature gate.
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//
// +patchMergeKey=name
// +patchStrategy=merge
// +listType=map
// +listMapKey=name
// +featureGate=AdmissionWebhookMatchConditions
// +optional
repeated MatchCondition matchConditions = 12 ;
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}
// MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.
// Deprecated in v1.16, planned for removal in v1.19. Use admissionregistration.k8s.io/v1 MutatingWebhookConfiguration instead.
message MutatingWebhookConfiguration {
// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1 ;
// Webhooks is a list of webhooks and the affected resources and operations.
// +optional
// +patchMergeKey=name
// +patchStrategy=merge
repeated MutatingWebhook Webhooks = 2 ;
}
// MutatingWebhookConfigurationList is a list of MutatingWebhookConfiguration.
message MutatingWebhookConfigurationList {
// Standard list metadata.
// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1 ;
// List of MutatingWebhookConfiguration.
repeated MutatingWebhookConfiguration items = 2 ;
}
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// NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.
// +structType=atomic
message NamedRuleWithOperations {
// ResourceNames is an optional white list of names that the rule applies to. An empty set means that everything is allowed.
// +listType=atomic
// +optional
repeated string resourceNames = 1 ;
// RuleWithOperations is a tuple of Operations and Resources.
optional k8s.io.api.admissionregistration.v1.RuleWithOperations ruleWithOperations = 2 ;
}
// ParamKind is a tuple of Group Kind and Version.
// +structType=atomic
message ParamKind {
// APIVersion is the API group version the resources belong to.
// In format of "group/version".
// Required.
optional string apiVersion = 1 ;
// Kind is the API kind the resources belong to.
// Required.
optional string kind = 2 ;
}
// ParamRef describes how to locate the params to be used as input to
// expressions of rules applied by a policy binding.
// +structType=atomic
message ParamRef {
// name is the name of the resource being referenced.
//
// One of `name` or `selector` must be set, but `name` and `selector` are
// mutually exclusive properties. If one is set, the other must be unset.
//
// A single parameter used for all admission requests can be configured
// by setting the `name` field, leaving `selector` blank, and setting namespace
// if `paramKind` is namespace-scoped.
optional string name = 1 ;
// namespace is the namespace of the referenced resource. Allows limiting
// the search for params to a specific namespace. Applies to both `name` and
// `selector` fields.
//
// A per-namespace parameter may be used by specifying a namespace-scoped
// `paramKind` in the policy and leaving this field empty.
//
// - If `paramKind` is cluster-scoped, this field MUST be unset. Setting this
// field results in a configuration error.
//
// - If `paramKind` is namespace-scoped, the namespace of the object being
// evaluated for admission will be used when this field is left unset. Take
// care that if this is left empty the binding must not match any cluster-scoped
// resources, which will result in an error.
//
// +optional
optional string namespace = 2 ;
// selector can be used to match multiple param objects based on their labels.
// Supply selector: {} to match all resources of the ParamKind.
//
// If multiple params are found, they are all evaluated with the policy expressions
// and the results are ANDed together.
//
// One of `name` or `selector` must be set, but `name` and `selector` are
// mutually exclusive properties. If one is set, the other must be unset.
//
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector selector = 3 ;
// `parameterNotFoundAction` controls the behavior of the binding when the resource
// exists, and name or selector is valid, but there are no parameters
// matched by the binding. If the value is set to `Allow`, then no
// matched parameters will be treated as successful validation by the binding.
// If set to `Deny`, then no matched parameters will be subject to the
// `failurePolicy` of the policy.
//
// Allowed values are `Allow` or `Deny`
//
// Required
optional string parameterNotFoundAction = 4 ;
}
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// ServiceReference holds a reference to Service.legacy.k8s.io
message ServiceReference {
// `namespace` is the namespace of the service.
// Required
optional string namespace = 1 ;
// `name` is the name of the service.
// Required
optional string name = 2 ;
// `path` is an optional URL path which will be sent in any request to
// this service.
// +optional
optional string path = 3 ;
// 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).
// +optional
optional int32 port = 4 ;
}
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// TypeChecking contains results of type checking the expressions in the
// ValidatingAdmissionPolicy
message TypeChecking {
// The type checking warnings for each expression.
// +optional
// +listType=atomic
repeated ExpressionWarning expressionWarnings = 1 ;
}
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// +genclient
// +genclient:nonNamespaced
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// +k8s:prerelease-lifecycle-gen:introduced=1.28
// ValidatingAdmissionPolicy describes the definition of an admission validation policy that accepts or rejects an object without changing it.
message ValidatingAdmissionPolicy {
// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1 ;
// Specification of the desired behavior of the ValidatingAdmissionPolicy.
optional ValidatingAdmissionPolicySpec spec = 2 ;
// The status of the ValidatingAdmissionPolicy, including warnings that are useful to determine if the policy
// behaves in the expected way.
// Populated by the system.
// Read-only.
// +optional
optional ValidatingAdmissionPolicyStatus status = 3 ;
}
// ValidatingAdmissionPolicyBinding binds the ValidatingAdmissionPolicy with paramerized resources.
// ValidatingAdmissionPolicyBinding and parameter CRDs together define how cluster administrators configure policies for clusters.
//
// For a given admission request, each binding will cause its policy to be
// evaluated N times, where N is 1 for policies/bindings that don't use
// params, otherwise N is the number of parameters selected by the binding.
//
// The CEL expressions of a policy must have a computed CEL cost below the maximum
// CEL budget. Each evaluation of the policy is given an independent CEL cost budget.
// Adding/removing policies, bindings, or params can not affect whether a
// given (policy, binding, param) combination is within its own CEL budget.
message ValidatingAdmissionPolicyBinding {
// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1 ;
// Specification of the desired behavior of the ValidatingAdmissionPolicyBinding.
optional ValidatingAdmissionPolicyBindingSpec spec = 2 ;
}
// ValidatingAdmissionPolicyBindingList is a list of ValidatingAdmissionPolicyBinding.
message ValidatingAdmissionPolicyBindingList {
// Standard list metadata.
// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1 ;
// List of PolicyBinding.
repeated ValidatingAdmissionPolicyBinding items = 2 ;
}
// ValidatingAdmissionPolicyBindingSpec is the specification of the ValidatingAdmissionPolicyBinding.
message ValidatingAdmissionPolicyBindingSpec {
// PolicyName references a ValidatingAdmissionPolicy name which the ValidatingAdmissionPolicyBinding binds to.
// If the referenced resource does not exist, this binding is considered invalid and will be ignored
// Required.
optional string policyName = 1 ;
// paramRef specifies the parameter resource used to configure the admission control policy.
// It should point to a resource of the type specified in ParamKind of the bound ValidatingAdmissionPolicy.
// If the policy specifies a ParamKind and the resource referred to by ParamRef does not exist, this binding is considered mis-configured and the FailurePolicy of the ValidatingAdmissionPolicy applied.
// If the policy does not specify a ParamKind then this field is ignored, and the rules are evaluated without a param.
// +optional
optional ParamRef paramRef = 2 ;
// MatchResources declares what resources match this binding and will be validated by it.
// Note that this is intersected with the policy's matchConstraints, so only requests that are matched by the policy can be selected by this.
// If this is unset, all resources matched by the policy are validated by this binding
// When resourceRules is unset, it does not constrain resource matching. If a resource is matched by the other fields of this object, it will be validated.
// Note that this is differs from ValidatingAdmissionPolicy matchConstraints, where resourceRules are required.
// +optional
optional MatchResources matchResources = 3 ;
// validationActions declares how Validations of the referenced ValidatingAdmissionPolicy are enforced.
// If a validation evaluates to false it is always enforced according to these actions.
//
// Failures defined by the ValidatingAdmissionPolicy's FailurePolicy are enforced according
// to these actions only if the FailurePolicy is set to Fail, otherwise the failures are
// ignored. This includes compilation errors, runtime errors and misconfigurations of the policy.
//
// validationActions is declared as a set of action values. Order does
// not matter. validationActions may not contain duplicates of the same action.
//
// The supported actions values are:
//
// "Deny" specifies that a validation failure results in a denied request.
//
// "Warn" specifies that a validation failure is reported to the request client
// in HTTP Warning headers, with a warning code of 299. Warnings can be sent
// both for allowed or denied admission responses.
//
// "Audit" specifies that a validation failure is included in the published
// audit event for the request. The audit event will contain a
// `validation.policy.admission.k8s.io/validation_failure` audit annotation
// with a value containing the details of the validation failures, formatted as
// a JSON list of objects, each with the following fields:
// - message: The validation failure message string
// - policy: The resource name of the ValidatingAdmissionPolicy
// - binding: The resource name of the ValidatingAdmissionPolicyBinding
// - expressionIndex: The index of the failed validations in the ValidatingAdmissionPolicy
// - validationActions: The enforcement actions enacted for the validation failure
// Example audit annotation:
// `"validation.policy.admission.k8s.io/validation_failure": "[{\"message\": \"Invalid value\", {\"policy\": \"policy.example.com\", {\"binding\": \"policybinding.example.com\", {\"expressionIndex\": \"1\", {\"validationActions\": [\"Audit\"]}]"`
//
// Clients should expect to handle additional values by ignoring
// any values not recognized.
//
// "Deny" and "Warn" may not be used together since this combination
// needlessly duplicates the validation failure both in the
// API response body and the HTTP warning headers.
//
// Required.
// +listType=set
repeated string validationActions = 4 ;
}
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// +k8s:prerelease-lifecycle-gen:introduced=1.28
// ValidatingAdmissionPolicyList is a list of ValidatingAdmissionPolicy.
message ValidatingAdmissionPolicyList {
// Standard list metadata.
// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1 ;
// List of ValidatingAdmissionPolicy.
repeated ValidatingAdmissionPolicy items = 2 ;
}
// ValidatingAdmissionPolicySpec is the specification of the desired behavior of the AdmissionPolicy.
message ValidatingAdmissionPolicySpec {
// ParamKind specifies the kind of resources used to parameterize this policy.
// If absent, there are no parameters for this policy and the param CEL variable will not be provided to validation expressions.
// If ParamKind refers to a non-existent kind, this policy definition is mis-configured and the FailurePolicy is applied.
// If paramKind is specified but paramRef is unset in ValidatingAdmissionPolicyBinding, the params variable will be null.
// +optional
optional ParamKind paramKind = 1 ;
// MatchConstraints specifies what resources this policy is designed to validate.
// The AdmissionPolicy cares about a request if it matches _all_ Constraints.
// However, in order to prevent clusters from being put into an unstable state that cannot be recovered from via the API
// ValidatingAdmissionPolicy cannot match ValidatingAdmissionPolicy and ValidatingAdmissionPolicyBinding.
// Required.
optional MatchResources matchConstraints = 2 ;
// Validations contain CEL expressions which is used to apply the validation.
// Validations and AuditAnnotations may not both be empty; a minimum of one Validations or AuditAnnotations is
// required.
// +listType=atomic
// +optional
repeated Validation validations = 3 ;
// failurePolicy defines how to handle failures for the admission policy. Failures can
// occur from CEL expression parse errors, type check errors, runtime errors and invalid
// or mis-configured policy definitions or bindings.
//
// A policy is invalid if spec.paramKind refers to a non-existent Kind.
// A binding is invalid if spec.paramRef.name refers to a non-existent resource.
//
// failurePolicy does not define how validations that evaluate to false are handled.
//
// When failurePolicy is set to Fail, ValidatingAdmissionPolicyBinding validationActions
// define how failures are enforced.
//
// Allowed values are Ignore or Fail. Defaults to Fail.
// +optional
optional string failurePolicy = 4 ;
// auditAnnotations contains CEL expressions which are used to produce audit
// annotations for the audit event of the API request.
// validations and auditAnnotations may not both be empty; a least one of validations or auditAnnotations is
// required.
// +listType=atomic
// +optional
repeated AuditAnnotation auditAnnotations = 5 ;
// MatchConditions is a list of conditions that must be met for a request to be validated.
// 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.
//
// If a parameter object is provided, it can be accessed via the `params` handle in the same
// manner as validation expressions.
//
// The exact matching logic is (in order):
// 1. If ANY matchCondition evaluates to FALSE, the policy is skipped.
// 2. If ALL matchConditions evaluate to TRUE, the policy is evaluated.
// 3. If any matchCondition evaluates to an error (but none are FALSE):
// - If failurePolicy=Fail, reject the request
// - If failurePolicy=Ignore, the policy is skipped
//
// +patchMergeKey=name
// +patchStrategy=merge
// +listType=map
// +listMapKey=name
// +optional
repeated MatchCondition matchConditions = 6 ;
// Variables contain definitions of variables that can be used in composition of other expressions.
// Each variable is defined as a named CEL expression.
// The variables defined here will be available under `variables` in other expressions of the policy
// except MatchConditions because MatchConditions are evaluated before the rest of the policy.
//
// The expression of a variable can refer to other variables defined earlier in the list but not those after.
// Thus, Variables must be sorted by the order of first appearance and acyclic.
// +patchMergeKey=name
// +patchStrategy=merge
// +listType=map
// +listMapKey=name
// +optional
repeated Variable variables = 7 ;
}
// ValidatingAdmissionPolicyStatus represents the status of an admission validation policy.
message ValidatingAdmissionPolicyStatus {
// The generation observed by the controller.
// +optional
optional int64 observedGeneration = 1 ;
// The results of type checking for each expression.
// Presence of this field indicates the completion of the type checking.
// +optional
optional TypeChecking typeChecking = 2 ;
// The conditions represent the latest available observations of a policy's current state.
// +optional
// +listType=map
// +listMapKey=type
repeated k8s.io.apimachinery.pkg.apis.meta.v1.Condition conditions = 3 ;
}
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// ValidatingWebhook describes an admission webhook and the resources and operations it applies to.
message ValidatingWebhook {
// 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.
// Required.
optional string name = 1 ;
// ClientConfig defines how to communicate with the hook.
// Required
optional WebhookClientConfig clientConfig = 2 ;
// Rules describes what operations on what resources/subresources the webhook cares about.
// The webhook cares about an operation if it matches _any_ Rule.
// However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
// from putting the cluster in a state which cannot be recovered from without completely
// disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
// on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
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repeated k8s.io.api.admissionregistration.v1.RuleWithOperations rules = 3 ;
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// FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
// allowed values are Ignore or Fail. Defaults to Ignore.
// +optional
optional string failurePolicy = 4 ;
// matchPolicy defines how the "rules" list is used to match incoming requests.
// Allowed values are "Exact" or "Equivalent".
//
// - Exact: match a request only if it exactly matches a specified rule.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
//
// - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
// For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
// and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
// a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
//
// Defaults to "Exact"
// +optional
optional string matchPolicy = 9 ;
// 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.
//
// For example, to run the webhook on any objects whose namespace is not
// associated with "runlevel" of "0" or "1"; you will set the selector as
// follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "runlevel",
// "operator": "NotIn",
// "values": [
// "0",
// "1"
// ]
// }
// ]
// }
//
// If instead you want to only run the webhook on any objects whose
// namespace is associated with the "environment" of "prod" or "staging";
// you will set the selector as follows:
// "namespaceSelector": {
// "matchExpressions": [
// {
// "key": "environment",
// "operator": "In",
// "values": [
// "prod",
// "staging"
// ]
// }
// ]
// }
//
// See
// https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
// for more examples of label selectors.
//
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 5 ;
// 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. A null
// object (oldObject in the case of create, or newObject in the case of
// delete) or an object that cannot have labels (like a
// DeploymentRollback or a PodProxyOptions object) is not considered to
// match.
// Use the object selector only if the webhook is opt-in, because end
// users may skip the admission webhook by setting the labels.
// Default to the empty LabelSelector, which matches everything.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 10 ;
// SideEffects states whether this webhook has side effects.
// Acceptable values are: Unknown, None, Some, NoneOnDryRun
// Webhooks with side effects MUST implement a reconciliation system, since a request may be
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// rejected by a future step in the admission chain and the side effects therefore need to be undone.
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// Requests with the dryRun attribute will be auto-rejected if they match a webhook with
// sideEffects == Unknown or Some. Defaults to Unknown.
// +optional
optional string sideEffects = 6 ;
// TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
// the webhook call will be ignored or the API call will fail based on the
// failure policy.
// The timeout value must be between 1 and 30 seconds.
// Default to 30 seconds.
// +optional
optional int32 timeoutSeconds = 7 ;
// AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
// versions the Webhook expects. API server will try to use first version in
// the list which it supports. If none of the versions specified in this list
// supported by API server, validation will fail for this object.
// If a persisted webhook configuration specifies allowed versions and does not
// include any versions known to the API Server, calls to the webhook will fail
// and be subject to the failure policy.
// Default to `['v1beta1']`.
// +optional
repeated string admissionReviewVersions = 8 ;
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// 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.
//
// The exact matching logic is (in order):
// 1. If ANY matchCondition evaluates to FALSE, the webhook is skipped.
// 2. If ALL matchConditions evaluate to TRUE, the webhook is called.
// 3. If any matchCondition evaluates to an error (but none are FALSE):
// - If failurePolicy=Fail, reject the request
// - If failurePolicy=Ignore, the error is ignored and the webhook is skipped
//
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// This is a beta feature and managed by the AdmissionWebhookMatchConditions feature gate.
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//
// +patchMergeKey=name
// +patchStrategy=merge
// +listType=map
// +listMapKey=name
// +featureGate=AdmissionWebhookMatchConditions
// +optional
repeated MatchCondition matchConditions = 11 ;
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}
// ValidatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and object without changing it.
// Deprecated in v1.16, planned for removal in v1.19. Use admissionregistration.k8s.io/v1 ValidatingWebhookConfiguration instead.
message ValidatingWebhookConfiguration {
// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1 ;
// Webhooks is a list of webhooks and the affected resources and operations.
// +optional
// +patchMergeKey=name
// +patchStrategy=merge
repeated ValidatingWebhook Webhooks = 2 ;
}
// ValidatingWebhookConfigurationList is a list of ValidatingWebhookConfiguration.
message ValidatingWebhookConfigurationList {
// Standard list metadata.
// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
// +optional
optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1 ;
// List of ValidatingWebhookConfiguration.
repeated ValidatingWebhookConfiguration items = 2 ;
}
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// Validation specifies the CEL expression which is used to apply the validation.
message Validation {
// Expression represents the expression which will be evaluated by CEL.
// ref: https://github.com/google/cel-spec
// CEL expressions have access to the contents of the API request/response, organized into CEL variables as well as some other useful variables:
//
// - 'object' - The object from the incoming request. The value is null for DELETE requests.
// - 'oldObject' - The existing object. The value is null for CREATE requests.
// - 'request' - Attributes of the API request([ref](/pkg/apis/admission/types.go#AdmissionRequest)).
// - 'params' - Parameter resource referred to by the policy binding being evaluated. Only populated if the policy has a ParamKind.
// - 'namespaceObject' - The namespace object that the incoming object belongs to. The value is null for cluster-scoped resources.
// - 'variables' - Map of composited variables, from its name to its lazily evaluated value.
// For example, a variable named 'foo' can be accessed as 'variables.foo'.
// - 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.
// See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz
// - 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the
// request resource.
//
// The `apiVersion`, `kind`, `metadata.name` and `metadata.generateName` are always accessible from the root of the
// object. No other metadata properties are accessible.
//
// Only property names of the form `[a-zA-Z_.-/][a-zA-Z0-9_.-/]*` are accessible.
// Accessible property names are escaped according to the following rules when accessed in the expression:
// - '__' escapes to '__underscores__'
// - '.' escapes to '__dot__'
// - '-' escapes to '__dash__'
// - '/' escapes to '__slash__'
// - Property names that exactly match a CEL RESERVED keyword escape to '__{keyword}__'. The keywords are:
// "true", "false", "null", "in", "as", "break", "const", "continue", "else", "for", "function", "if",
// "import", "let", "loop", "package", "namespace", "return".
// Examples:
// - Expression accessing a property named "namespace": {"Expression": "object.__namespace__ > 0"}
// - Expression accessing a property named "x-prop": {"Expression": "object.x__dash__prop > 0"}
// - Expression accessing a property named "redact__d": {"Expression": "object.redact__underscores__d > 0"}
//
// Equality on arrays with list type of 'set' or 'map' ignores element order, i.e. [1, 2] == [2, 1].
// Concatenation on arrays with x-kubernetes-list-type use the semantics of the list type:
// - 'set': `X + Y` performs a union where the array positions of all elements in `X` are preserved and
// non-intersecting elements in `Y` are appended, retaining their partial order.
// - 'map': `X + Y` performs a merge where the array positions of all keys in `X` are preserved but the values
// are overwritten by values in `Y` when the key sets of `X` and `Y` intersect. Elements in `Y` with
// non-intersecting keys are appended, retaining their partial order.
// Required.
optional string Expression = 1 ;
// Message represents the message displayed when validation fails. The message is required if the Expression contains
// line breaks. The message must not contain line breaks.
// If unset, the message is "failed rule: {Rule}".
// e.g. "must be a URL with the host matching spec.host"
// If the Expression contains line breaks. Message is required.
// The message must not contain line breaks.
// If unset, the message is "failed Expression: {Expression}".
// +optional
optional string message = 2 ;
// Reason represents a machine-readable description of why this validation failed.
// If this is the first validation in the list to fail, this reason, as well as the
// corresponding HTTP response code, are used in the
// HTTP response to the client.
// The currently supported reasons are: "Unauthorized", "Forbidden", "Invalid", "RequestEntityTooLarge".
// If not set, StatusReasonInvalid is used in the response to the client.
// +optional
optional string reason = 3 ;
// messageExpression declares a CEL expression that evaluates to the validation failure message that is returned when this rule fails.
// Since messageExpression is used as a failure message, it must evaluate to a string.
// If both message and messageExpression are present on a validation, then messageExpression will be used if validation fails.
// If messageExpression results in a runtime error, the runtime error is logged, and the validation failure message is produced
// as if the messageExpression field were unset. If messageExpression evaluates to an empty string, a string with only spaces, or a string
// that contains line breaks, then the validation failure message will also be produced as if the messageExpression field were unset, and
// the fact that messageExpression produced an empty string/string with only spaces/string with line breaks will be logged.
// messageExpression has access to all the same variables as the `expression` except for 'authorizer' and 'authorizer.requestResource'.
// Example:
// "object.x must be less than max ("+string(params.max)+")"
// +optional
optional string messageExpression = 4 ;
}
// Variable is the definition of a variable that is used for composition. A variable is defined as a named expression.
// +structType=atomic
message Variable {
// Name is the name of the variable. The name must be a valid CEL identifier and unique among all variables.
// The variable can be accessed in other expressions through `variables`
// For example, if name is "foo", the variable will be available as `variables.foo`
optional string Name = 1 ;
// Expression is the expression that will be evaluated as the value of the variable.
// The CEL expression has access to the same identifiers as the CEL expressions in Validation.
optional string Expression = 2 ;
}
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// WebhookClientConfig contains the information to make a TLS
// connection with the webhook
message WebhookClientConfig {
// `url` gives the location of the webhook, in standard URL form
// (`scheme://host:port/path`). Exactly one of `url` or `service`
// must be specified.
//
// The `host` should not refer to a service running in the cluster; use
// the `service` field instead. The host might be resolved via external
// DNS in some apiservers (e.g., `kube-apiserver` cannot resolve
// in-cluster DNS as that would be a layering violation). `host` may
// also be an IP address.
//
// Please note that using `localhost` or `127.0.0.1` as a `host` is
// risky unless you take great care to run this webhook on all hosts
// which run an apiserver which might need to make calls to this
// webhook. Such installs are likely to be non-portable, i.e., not easy
// to turn up in a new cluster.
//
// The scheme must be "https"; the URL must begin with "https://".
//
// A path is optional, and if present may be any string permissible in
// a URL. You may use the path to pass an arbitrary string to the
// webhook, for example, a cluster identifier.
//
// Attempting to use a user or basic auth e.g. "user:password@" is not
// allowed. Fragments ("#...") and query parameters ("?...") are not
// allowed, either.
//
// +optional
optional string url = 3 ;
// `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`.
//
// +optional
optional ServiceReference service = 1 ;
// `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.
// +optional
optional bytes caBundle = 2 ;
}
