1/*
2Copyright The Kubernetes Authors.
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16
17
18// This file was autogenerated by go-to-protobuf. Do not edit it manually!
19
20syntax = "proto2";
21
22package k8s.io.api.admissionregistration.v1;
23
24import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto";
25import "k8s.io/apimachinery/pkg/runtime/generated.proto";
26import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";
27
28// Package-wide variables from generator "generated".
29option go_package = "k8s.io/api/admissionregistration/v1";
30
31// AuditAnnotation describes how to produce an audit annotation for an API request.
32message AuditAnnotation {
33 // key specifies the audit annotation key. The audit annotation keys of
34 // a ValidatingAdmissionPolicy must be unique. The key must be a qualified
35 // name ([A-Za-z0-9][-A-Za-z0-9_.]*) no more than 63 bytes in length.
36 //
37 // The key is combined with the resource name of the
38 // ValidatingAdmissionPolicy to construct an audit annotation key:
39 // "{ValidatingAdmissionPolicy name}/{key}".
40 //
41 // If an admission webhook uses the same resource name as this ValidatingAdmissionPolicy
42 // and the same audit annotation key, the annotation key will be identical.
43 // In this case, the first annotation written with the key will be included
44 // in the audit event and all subsequent annotations with the same key
45 // will be discarded.
46 //
47 // Required.
48 optional string key = 1;
49
50 // valueExpression represents the expression which is evaluated by CEL to
51 // produce an audit annotation value. The expression must evaluate to either
52 // a string or null value. If the expression evaluates to a string, the
53 // audit annotation is included with the string value. If the expression
54 // evaluates to null or empty string the audit annotation will be omitted.
55 // The valueExpression may be no longer than 5kb in length.
56 // If the result of the valueExpression is more than 10kb in length, it
57 // will be truncated to 10kb.
58 //
59 // If multiple ValidatingAdmissionPolicyBinding resources match an
60 // API request, then the valueExpression will be evaluated for
61 // each binding. All unique values produced by the valueExpressions
62 // will be joined together in a comma-separated list.
63 //
64 // Required.
65 optional string valueExpression = 2;
66}
67
68// ExpressionWarning is a warning information that targets a specific expression.
69message ExpressionWarning {
70 // The path to the field that refers the expression.
71 // For example, the reference to the expression of the first item of
72 // validations is "spec.validations[0].expression"
73 optional string fieldRef = 2;
74
75 // The content of type checking information in a human-readable form.
76 // Each line of the warning contains the type that the expression is checked
77 // against, followed by the type check error from the compiler.
78 optional string warning = 3;
79}
80
81// MatchCondition represents a condition which must by fulfilled for a request to be sent to a webhook.
82message MatchCondition {
83 // Name is an identifier for this match condition, used for strategic merging of MatchConditions,
84 // as well as providing an identifier for logging purposes. A good name should be descriptive of
85 // the associated expression.
86 // Name must be a qualified name consisting of alphanumeric characters, '-', '_' or '.', and
87 // must start and end with an alphanumeric character (e.g. 'MyName', or 'my.name', or
88 // '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]') with an
89 // optional DNS subdomain prefix and '/' (e.g. 'example.com/MyName')
90 //
91 // Required.
92 optional string name = 1;
93
94 // Expression represents the expression which will be evaluated by CEL. Must evaluate to bool.
95 // CEL expressions have access to the contents of the AdmissionRequest and Authorizer, organized into CEL variables:
96 //
97 // 'object' - The object from the incoming request. The value is null for DELETE requests.
98 // 'oldObject' - The existing object. The value is null for CREATE requests.
99 // 'request' - Attributes of the admission request(/pkg/apis/admission/types.go#AdmissionRequest).
100 // 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.
101 // See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz
102 // 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the
103 // request resource.
104 // Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
105 //
106 // Required.
107 optional string expression = 2;
108}
109
110// MatchResources decides whether to run the admission control policy on an object based
111// on whether it meets the match criteria.
112// The exclude rules take precedence over include rules (if a resource matches both, it is excluded)
113// +structType=atomic
114message MatchResources {
115 // NamespaceSelector decides whether to run the admission control policy on an object based
116 // on whether the namespace for that object matches the selector. If the
117 // object itself is a namespace, the matching is performed on
118 // object.metadata.labels. If the object is another cluster scoped resource,
119 // it never skips the policy.
120 //
121 // For example, to run the webhook on any objects whose namespace is not
122 // associated with "runlevel" of "0" or "1"; you will set the selector as
123 // follows:
124 // "namespaceSelector": {
125 // "matchExpressions": [
126 // {
127 // "key": "runlevel",
128 // "operator": "NotIn",
129 // "values": [
130 // "0",
131 // "1"
132 // ]
133 // }
134 // ]
135 // }
136 //
137 // If instead you want to only run the policy on any objects whose
138 // namespace is associated with the "environment" of "prod" or "staging";
139 // you will set the selector as follows:
140 // "namespaceSelector": {
141 // "matchExpressions": [
142 // {
143 // "key": "environment",
144 // "operator": "In",
145 // "values": [
146 // "prod",
147 // "staging"
148 // ]
149 // }
150 // ]
151 // }
152 //
153 // See
154 // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
155 // for more examples of label selectors.
156 //
157 // Default to the empty LabelSelector, which matches everything.
158 // +optional
159 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 1;
160
161 // ObjectSelector decides whether to run the validation based on if the
162 // object has matching labels. objectSelector is evaluated against both
163 // the oldObject and newObject that would be sent to the cel validation, and
164 // is considered to match if either object matches the selector. A null
165 // object (oldObject in the case of create, or newObject in the case of
166 // delete) or an object that cannot have labels (like a
167 // DeploymentRollback or a PodProxyOptions object) is not considered to
168 // match.
169 // Use the object selector only if the webhook is opt-in, because end
170 // users may skip the admission webhook by setting the labels.
171 // Default to the empty LabelSelector, which matches everything.
172 // +optional
173 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 2;
174
175 // ResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy matches.
176 // The policy cares about an operation if it matches _any_ Rule.
177 // +listType=atomic
178 // +optional
179 repeated NamedRuleWithOperations resourceRules = 3;
180
181 // ExcludeResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy should not care about.
182 // The exclude rules take precedence over include rules (if a resource matches both, it is excluded)
183 // +listType=atomic
184 // +optional
185 repeated NamedRuleWithOperations excludeResourceRules = 4;
186
187 // matchPolicy defines how the "MatchResources" list is used to match incoming requests.
188 // Allowed values are "Exact" or "Equivalent".
189 //
190 // - Exact: match a request only if it exactly matches a specified rule.
191 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
192 // but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
193 // a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the ValidatingAdmissionPolicy.
194 //
195 // - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
196 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
197 // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
198 // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the ValidatingAdmissionPolicy.
199 //
200 // Defaults to "Equivalent"
201 // +optional
202 optional string matchPolicy = 7;
203}
204
205// MutatingWebhook describes an admission webhook and the resources and operations it applies to.
206message MutatingWebhook {
207 // The name of the admission webhook.
208 // Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
209 // "imagepolicy" is the name of the webhook, and kubernetes.io is the name
210 // of the organization.
211 // Required.
212 optional string name = 1;
213
214 // ClientConfig defines how to communicate with the hook.
215 // Required
216 optional WebhookClientConfig clientConfig = 2;
217
218 // Rules describes what operations on what resources/subresources the webhook cares about.
219 // The webhook cares about an operation if it matches _any_ Rule.
220 // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
221 // from putting the cluster in a state which cannot be recovered from without completely
222 // disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
223 // on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
224 // +listType=atomic
225 repeated RuleWithOperations rules = 3;
226
227 // FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
228 // allowed values are Ignore or Fail. Defaults to Fail.
229 // +optional
230 optional string failurePolicy = 4;
231
232 // matchPolicy defines how the "rules" list is used to match incoming requests.
233 // Allowed values are "Exact" or "Equivalent".
234 //
235 // - Exact: match a request only if it exactly matches a specified rule.
236 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
237 // but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
238 // a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
239 //
240 // - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
241 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
242 // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
243 // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
244 //
245 // Defaults to "Equivalent"
246 // +optional
247 optional string matchPolicy = 9;
248
249 // NamespaceSelector decides whether to run the webhook on an object based
250 // on whether the namespace for that object matches the selector. If the
251 // object itself is a namespace, the matching is performed on
252 // object.metadata.labels. If the object is another cluster scoped resource,
253 // it never skips the webhook.
254 //
255 // For example, to run the webhook on any objects whose namespace is not
256 // associated with "runlevel" of "0" or "1"; you will set the selector as
257 // follows:
258 // "namespaceSelector": {
259 // "matchExpressions": [
260 // {
261 // "key": "runlevel",
262 // "operator": "NotIn",
263 // "values": [
264 // "0",
265 // "1"
266 // ]
267 // }
268 // ]
269 // }
270 //
271 // If instead you want to only run the webhook on any objects whose
272 // namespace is associated with the "environment" of "prod" or "staging";
273 // you will set the selector as follows:
274 // "namespaceSelector": {
275 // "matchExpressions": [
276 // {
277 // "key": "environment",
278 // "operator": "In",
279 // "values": [
280 // "prod",
281 // "staging"
282 // ]
283 // }
284 // ]
285 // }
286 //
287 // See
288 // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
289 // for more examples of label selectors.
290 //
291 // Default to the empty LabelSelector, which matches everything.
292 // +optional
293 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 5;
294
295 // ObjectSelector decides whether to run the webhook based on if the
296 // object has matching labels. objectSelector is evaluated against both
297 // the oldObject and newObject that would be sent to the webhook, and
298 // is considered to match if either object matches the selector. A null
299 // object (oldObject in the case of create, or newObject in the case of
300 // delete) or an object that cannot have labels (like a
301 // DeploymentRollback or a PodProxyOptions object) is not considered to
302 // match.
303 // Use the object selector only if the webhook is opt-in, because end
304 // users may skip the admission webhook by setting the labels.
305 // Default to the empty LabelSelector, which matches everything.
306 // +optional
307 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 11;
308
309 // SideEffects states whether this webhook has side effects.
310 // Acceptable values are: None, NoneOnDryRun (webhooks created via v1beta1 may also specify Some or Unknown).
311 // Webhooks with side effects MUST implement a reconciliation system, since a request may be
312 // rejected by a future step in the admission chain and the side effects therefore need to be undone.
313 // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
314 // sideEffects == Unknown or Some.
315 optional string sideEffects = 6;
316
317 // TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
318 // the webhook call will be ignored or the API call will fail based on the
319 // failure policy.
320 // The timeout value must be between 1 and 30 seconds.
321 // Default to 10 seconds.
322 // +optional
323 optional int32 timeoutSeconds = 7;
324
325 // AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
326 // versions the Webhook expects. API server will try to use first version in
327 // the list which it supports. If none of the versions specified in this list
328 // supported by API server, validation will fail for this object.
329 // If a persisted webhook configuration specifies allowed versions and does not
330 // include any versions known to the API Server, calls to the webhook will fail
331 // and be subject to the failure policy.
332 // +listType=atomic
333 repeated string admissionReviewVersions = 8;
334
335 // reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation.
336 // Allowed values are "Never" and "IfNeeded".
337 //
338 // Never: the webhook will not be called more than once in a single admission evaluation.
339 //
340 // IfNeeded: the webhook will be called at least one additional time as part of the admission evaluation
341 // if the object being admitted is modified by other admission plugins after the initial webhook call.
342 // Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
343 // Note:
344 // * the number of additional invocations is not guaranteed to be exactly one.
345 // * if additional invocations result in further modifications to the object, webhooks are not guaranteed to be invoked again.
346 // * webhooks that use this option may be reordered to minimize the number of additional invocations.
347 // * to validate an object after all mutations are guaranteed complete, use a validating admission webhook instead.
348 //
349 // Defaults to "Never".
350 // +optional
351 optional string reinvocationPolicy = 10;
352
353 // MatchConditions is a list of conditions that must be met for a request to be sent to this
354 // webhook. Match conditions filter requests that have already been matched by the rules,
355 // namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
356 // There are a maximum of 64 match conditions allowed.
357 //
358 // The exact matching logic is (in order):
359 // 1. If ANY matchCondition evaluates to FALSE, the webhook is skipped.
360 // 2. If ALL matchConditions evaluate to TRUE, the webhook is called.
361 // 3. If any matchCondition evaluates to an error (but none are FALSE):
362 // - If failurePolicy=Fail, reject the request
363 // - If failurePolicy=Ignore, the error is ignored and the webhook is skipped
364 //
365 // +patchMergeKey=name
366 // +patchStrategy=merge
367 // +listType=map
368 // +listMapKey=name
369 // +optional
370 repeated MatchCondition matchConditions = 12;
371}
372
373// MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.
374message MutatingWebhookConfiguration {
375 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
376 // +optional
377 optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
378
379 // Webhooks is a list of webhooks and the affected resources and operations.
380 // +optional
381 // +patchMergeKey=name
382 // +patchStrategy=merge
383 // +listType=map
384 // +listMapKey=name
385 repeated MutatingWebhook Webhooks = 2;
386}
387
388// MutatingWebhookConfigurationList is a list of MutatingWebhookConfiguration.
389message MutatingWebhookConfigurationList {
390 // Standard list metadata.
391 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
392 // +optional
393 optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
394
395 // List of MutatingWebhookConfiguration.
396 repeated MutatingWebhookConfiguration items = 2;
397}
398
399// NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.
400// +structType=atomic
401message NamedRuleWithOperations {
402 // ResourceNames is an optional white list of names that the rule applies to. An empty set means that everything is allowed.
403 // +listType=atomic
404 // +optional
405 repeated string resourceNames = 1;
406
407 // RuleWithOperations is a tuple of Operations and Resources.
408 optional RuleWithOperations ruleWithOperations = 2;
409}
410
411// ParamKind is a tuple of Group Kind and Version.
412// +structType=atomic
413message ParamKind {
414 // APIVersion is the API group version the resources belong to.
415 // In format of "group/version".
416 // Required.
417 optional string apiVersion = 1;
418
419 // Kind is the API kind the resources belong to.
420 // Required.
421 optional string kind = 2;
422}
423
424// ParamRef describes how to locate the params to be used as input to
425// expressions of rules applied by a policy binding.
426// +structType=atomic
427message ParamRef {
428 // name is the name of the resource being referenced.
429 //
430 // One of `name` or `selector` must be set, but `name` and `selector` are
431 // mutually exclusive properties. If one is set, the other must be unset.
432 //
433 // A single parameter used for all admission requests can be configured
434 // by setting the `name` field, leaving `selector` blank, and setting namespace
435 // if `paramKind` is namespace-scoped.
436 optional string name = 1;
437
438 // namespace is the namespace of the referenced resource. Allows limiting
439 // the search for params to a specific namespace. Applies to both `name` and
440 // `selector` fields.
441 //
442 // A per-namespace parameter may be used by specifying a namespace-scoped
443 // `paramKind` in the policy and leaving this field empty.
444 //
445 // - If `paramKind` is cluster-scoped, this field MUST be unset. Setting this
446 // field results in a configuration error.
447 //
448 // - If `paramKind` is namespace-scoped, the namespace of the object being
449 // evaluated for admission will be used when this field is left unset. Take
450 // care that if this is left empty the binding must not match any cluster-scoped
451 // resources, which will result in an error.
452 //
453 // +optional
454 optional string namespace = 2;
455
456 // selector can be used to match multiple param objects based on their labels.
457 // Supply selector: {} to match all resources of the ParamKind.
458 //
459 // If multiple params are found, they are all evaluated with the policy expressions
460 // and the results are ANDed together.
461 //
462 // One of `name` or `selector` must be set, but `name` and `selector` are
463 // mutually exclusive properties. If one is set, the other must be unset.
464 //
465 // +optional
466 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector selector = 3;
467
468 // `parameterNotFoundAction` controls the behavior of the binding when the resource
469 // exists, and name or selector is valid, but there are no parameters
470 // matched by the binding. If the value is set to `Allow`, then no
471 // matched parameters will be treated as successful validation by the binding.
472 // If set to `Deny`, then no matched parameters will be subject to the
473 // `failurePolicy` of the policy.
474 //
475 // Allowed values are `Allow` or `Deny`
476 //
477 // Required
478 optional string parameterNotFoundAction = 4;
479}
480
481// Rule is a tuple of APIGroups, APIVersion, and Resources.It is recommended
482// to make sure that all the tuple expansions are valid.
483message Rule {
484 // APIGroups is the API groups the resources belong to. '*' is all groups.
485 // If '*' is present, the length of the slice must be one.
486 // Required.
487 // +listType=atomic
488 repeated string apiGroups = 1;
489
490 // APIVersions is the API versions the resources belong to. '*' is all versions.
491 // If '*' is present, the length of the slice must be one.
492 // Required.
493 // +listType=atomic
494 repeated string apiVersions = 2;
495
496 // Resources is a list of resources this rule applies to.
497 //
498 // For example:
499 // 'pods' means pods.
500 // 'pods/log' means the log subresource of pods.
501 // '*' means all resources, but not subresources.
502 // 'pods/*' means all subresources of pods.
503 // '*/scale' means all scale subresources.
504 // '*/*' means all resources and their subresources.
505 //
506 // If wildcard is present, the validation rule will ensure resources do not
507 // overlap with each other.
508 //
509 // Depending on the enclosing object, subresources might not be allowed.
510 // Required.
511 // +listType=atomic
512 repeated string resources = 3;
513
514 // scope specifies the scope of this rule.
515 // Valid values are "Cluster", "Namespaced", and "*"
516 // "Cluster" means that only cluster-scoped resources will match this rule.
517 // Namespace API objects are cluster-scoped.
518 // "Namespaced" means that only namespaced resources will match this rule.
519 // "*" means that there are no scope restrictions.
520 // Subresources match the scope of their parent resource.
521 // Default is "*".
522 //
523 // +optional
524 optional string scope = 4;
525}
526
527// RuleWithOperations is a tuple of Operations and Resources. It is recommended to make
528// sure that all the tuple expansions are valid.
529message RuleWithOperations {
530 // Operations is the operations the admission hook cares about - CREATE, UPDATE, DELETE, CONNECT or *
531 // for all of those operations and any future admission operations that are added.
532 // If '*' is present, the length of the slice must be one.
533 // Required.
534 // +listType=atomic
535 repeated string operations = 1;
536
537 // Rule is embedded, it describes other criteria of the rule, like
538 // APIGroups, APIVersions, Resources, etc.
539 optional Rule rule = 2;
540}
541
542// ServiceReference holds a reference to Service.legacy.k8s.io
543message ServiceReference {
544 // `namespace` is the namespace of the service.
545 // Required
546 optional string namespace = 1;
547
548 // `name` is the name of the service.
549 // Required
550 optional string name = 2;
551
552 // `path` is an optional URL path which will be sent in any request to
553 // this service.
554 // +optional
555 optional string path = 3;
556
557 // If specified, the port on the service that hosting webhook.
558 // Default to 443 for backward compatibility.
559 // `port` should be a valid port number (1-65535, inclusive).
560 // +optional
561 optional int32 port = 4;
562}
563
564// TypeChecking contains results of type checking the expressions in the
565// ValidatingAdmissionPolicy
566message TypeChecking {
567 // The type checking warnings for each expression.
568 // +optional
569 // +listType=atomic
570 repeated ExpressionWarning expressionWarnings = 1;
571}
572
573// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
574// +genclient
575// +genclient:nonNamespaced
576// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
577// +k8s:prerelease-lifecycle-gen:introduced=1.30
578// ValidatingAdmissionPolicy describes the definition of an admission validation policy that accepts or rejects an object without changing it.
579message ValidatingAdmissionPolicy {
580 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
581 // +optional
582 optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
583
584 // Specification of the desired behavior of the ValidatingAdmissionPolicy.
585 optional ValidatingAdmissionPolicySpec spec = 2;
586
587 // The status of the ValidatingAdmissionPolicy, including warnings that are useful to determine if the policy
588 // behaves in the expected way.
589 // Populated by the system.
590 // Read-only.
591 // +optional
592 optional ValidatingAdmissionPolicyStatus status = 3;
593}
594
595// ValidatingAdmissionPolicyBinding binds the ValidatingAdmissionPolicy with paramerized resources.
596// ValidatingAdmissionPolicyBinding and parameter CRDs together define how cluster administrators configure policies for clusters.
597//
598// For a given admission request, each binding will cause its policy to be
599// evaluated N times, where N is 1 for policies/bindings that don't use
600// params, otherwise N is the number of parameters selected by the binding.
601//
602// The CEL expressions of a policy must have a computed CEL cost below the maximum
603// CEL budget. Each evaluation of the policy is given an independent CEL cost budget.
604// Adding/removing policies, bindings, or params can not affect whether a
605// given (policy, binding, param) combination is within its own CEL budget.
606message ValidatingAdmissionPolicyBinding {
607 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
608 // +optional
609 optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
610
611 // Specification of the desired behavior of the ValidatingAdmissionPolicyBinding.
612 optional ValidatingAdmissionPolicyBindingSpec spec = 2;
613}
614
615// ValidatingAdmissionPolicyBindingList is a list of ValidatingAdmissionPolicyBinding.
616message ValidatingAdmissionPolicyBindingList {
617 // Standard list metadata.
618 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
619 // +optional
620 optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
621
622 // List of PolicyBinding.
623 repeated ValidatingAdmissionPolicyBinding items = 2;
624}
625
626// ValidatingAdmissionPolicyBindingSpec is the specification of the ValidatingAdmissionPolicyBinding.
627message ValidatingAdmissionPolicyBindingSpec {
628 // PolicyName references a ValidatingAdmissionPolicy name which the ValidatingAdmissionPolicyBinding binds to.
629 // If the referenced resource does not exist, this binding is considered invalid and will be ignored
630 // Required.
631 optional string policyName = 1;
632
633 // paramRef specifies the parameter resource used to configure the admission control policy.
634 // It should point to a resource of the type specified in ParamKind of the bound ValidatingAdmissionPolicy.
635 // 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.
636 // If the policy does not specify a ParamKind then this field is ignored, and the rules are evaluated without a param.
637 // +optional
638 optional ParamRef paramRef = 2;
639
640 // MatchResources declares what resources match this binding and will be validated by it.
641 // Note that this is intersected with the policy's matchConstraints, so only requests that are matched by the policy can be selected by this.
642 // If this is unset, all resources matched by the policy are validated by this binding
643 // 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.
644 // Note that this is differs from ValidatingAdmissionPolicy matchConstraints, where resourceRules are required.
645 // +optional
646 optional MatchResources matchResources = 3;
647
648 // validationActions declares how Validations of the referenced ValidatingAdmissionPolicy are enforced.
649 // If a validation evaluates to false it is always enforced according to these actions.
650 //
651 // Failures defined by the ValidatingAdmissionPolicy's FailurePolicy are enforced according
652 // to these actions only if the FailurePolicy is set to Fail, otherwise the failures are
653 // ignored. This includes compilation errors, runtime errors and misconfigurations of the policy.
654 //
655 // validationActions is declared as a set of action values. Order does
656 // not matter. validationActions may not contain duplicates of the same action.
657 //
658 // The supported actions values are:
659 //
660 // "Deny" specifies that a validation failure results in a denied request.
661 //
662 // "Warn" specifies that a validation failure is reported to the request client
663 // in HTTP Warning headers, with a warning code of 299. Warnings can be sent
664 // both for allowed or denied admission responses.
665 //
666 // "Audit" specifies that a validation failure is included in the published
667 // audit event for the request. The audit event will contain a
668 // `validation.policy.admission.k8s.io/validation_failure` audit annotation
669 // with a value containing the details of the validation failures, formatted as
670 // a JSON list of objects, each with the following fields:
671 // - message: The validation failure message string
672 // - policy: The resource name of the ValidatingAdmissionPolicy
673 // - binding: The resource name of the ValidatingAdmissionPolicyBinding
674 // - expressionIndex: The index of the failed validations in the ValidatingAdmissionPolicy
675 // - validationActions: The enforcement actions enacted for the validation failure
676 // Example audit annotation:
677 // `"validation.policy.admission.k8s.io/validation_failure": "[{\"message\": \"Invalid value\", {\"policy\": \"policy.example.com\", {\"binding\": \"policybinding.example.com\", {\"expressionIndex\": \"1\", {\"validationActions\": [\"Audit\"]}]"`
678 //
679 // Clients should expect to handle additional values by ignoring
680 // any values not recognized.
681 //
682 // "Deny" and "Warn" may not be used together since this combination
683 // needlessly duplicates the validation failure both in the
684 // API response body and the HTTP warning headers.
685 //
686 // Required.
687 // +listType=set
688 repeated string validationActions = 4;
689}
690
691// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
692// +k8s:prerelease-lifecycle-gen:introduced=1.30
693// ValidatingAdmissionPolicyList is a list of ValidatingAdmissionPolicy.
694message ValidatingAdmissionPolicyList {
695 // Standard list metadata.
696 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
697 // +optional
698 optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
699
700 // List of ValidatingAdmissionPolicy.
701 repeated ValidatingAdmissionPolicy items = 2;
702}
703
704// ValidatingAdmissionPolicySpec is the specification of the desired behavior of the AdmissionPolicy.
705message ValidatingAdmissionPolicySpec {
706 // ParamKind specifies the kind of resources used to parameterize this policy.
707 // If absent, there are no parameters for this policy and the param CEL variable will not be provided to validation expressions.
708 // If ParamKind refers to a non-existent kind, this policy definition is mis-configured and the FailurePolicy is applied.
709 // If paramKind is specified but paramRef is unset in ValidatingAdmissionPolicyBinding, the params variable will be null.
710 // +optional
711 optional ParamKind paramKind = 1;
712
713 // MatchConstraints specifies what resources this policy is designed to validate.
714 // The AdmissionPolicy cares about a request if it matches _all_ Constraints.
715 // However, in order to prevent clusters from being put into an unstable state that cannot be recovered from via the API
716 // ValidatingAdmissionPolicy cannot match ValidatingAdmissionPolicy and ValidatingAdmissionPolicyBinding.
717 // Required.
718 optional MatchResources matchConstraints = 2;
719
720 // Validations contain CEL expressions which is used to apply the validation.
721 // Validations and AuditAnnotations may not both be empty; a minimum of one Validations or AuditAnnotations is
722 // required.
723 // +listType=atomic
724 // +optional
725 repeated Validation validations = 3;
726
727 // failurePolicy defines how to handle failures for the admission policy. Failures can
728 // occur from CEL expression parse errors, type check errors, runtime errors and invalid
729 // or mis-configured policy definitions or bindings.
730 //
731 // A policy is invalid if spec.paramKind refers to a non-existent Kind.
732 // A binding is invalid if spec.paramRef.name refers to a non-existent resource.
733 //
734 // failurePolicy does not define how validations that evaluate to false are handled.
735 //
736 // When failurePolicy is set to Fail, ValidatingAdmissionPolicyBinding validationActions
737 // define how failures are enforced.
738 //
739 // Allowed values are Ignore or Fail. Defaults to Fail.
740 // +optional
741 optional string failurePolicy = 4;
742
743 // auditAnnotations contains CEL expressions which are used to produce audit
744 // annotations for the audit event of the API request.
745 // validations and auditAnnotations may not both be empty; a least one of validations or auditAnnotations is
746 // required.
747 // +listType=atomic
748 // +optional
749 repeated AuditAnnotation auditAnnotations = 5;
750
751 // MatchConditions is a list of conditions that must be met for a request to be validated.
752 // Match conditions filter requests that have already been matched by the rules,
753 // namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
754 // There are a maximum of 64 match conditions allowed.
755 //
756 // If a parameter object is provided, it can be accessed via the `params` handle in the same
757 // manner as validation expressions.
758 //
759 // The exact matching logic is (in order):
760 // 1. If ANY matchCondition evaluates to FALSE, the policy is skipped.
761 // 2. If ALL matchConditions evaluate to TRUE, the policy is evaluated.
762 // 3. If any matchCondition evaluates to an error (but none are FALSE):
763 // - If failurePolicy=Fail, reject the request
764 // - If failurePolicy=Ignore, the policy is skipped
765 //
766 // +patchMergeKey=name
767 // +patchStrategy=merge
768 // +listType=map
769 // +listMapKey=name
770 // +optional
771 repeated MatchCondition matchConditions = 6;
772
773 // Variables contain definitions of variables that can be used in composition of other expressions.
774 // Each variable is defined as a named CEL expression.
775 // The variables defined here will be available under `variables` in other expressions of the policy
776 // except MatchConditions because MatchConditions are evaluated before the rest of the policy.
777 //
778 // The expression of a variable can refer to other variables defined earlier in the list but not those after.
779 // Thus, Variables must be sorted by the order of first appearance and acyclic.
780 // +patchMergeKey=name
781 // +patchStrategy=merge
782 // +listType=map
783 // +listMapKey=name
784 // +optional
785 repeated Variable variables = 7;
786}
787
788// ValidatingAdmissionPolicyStatus represents the status of an admission validation policy.
789message ValidatingAdmissionPolicyStatus {
790 // The generation observed by the controller.
791 // +optional
792 optional int64 observedGeneration = 1;
793
794 // The results of type checking for each expression.
795 // Presence of this field indicates the completion of the type checking.
796 // +optional
797 optional TypeChecking typeChecking = 2;
798
799 // The conditions represent the latest available observations of a policy's current state.
800 // +optional
801 // +listType=map
802 // +listMapKey=type
803 repeated k8s.io.apimachinery.pkg.apis.meta.v1.Condition conditions = 3;
804}
805
806// ValidatingWebhook describes an admission webhook and the resources and operations it applies to.
807message ValidatingWebhook {
808 // The name of the admission webhook.
809 // Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
810 // "imagepolicy" is the name of the webhook, and kubernetes.io is the name
811 // of the organization.
812 // Required.
813 optional string name = 1;
814
815 // ClientConfig defines how to communicate with the hook.
816 // Required
817 optional WebhookClientConfig clientConfig = 2;
818
819 // Rules describes what operations on what resources/subresources the webhook cares about.
820 // The webhook cares about an operation if it matches _any_ Rule.
821 // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
822 // from putting the cluster in a state which cannot be recovered from without completely
823 // disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
824 // on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
825 // +listType=atomic
826 repeated RuleWithOperations rules = 3;
827
828 // FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
829 // allowed values are Ignore or Fail. Defaults to Fail.
830 // +optional
831 optional string failurePolicy = 4;
832
833 // matchPolicy defines how the "rules" list is used to match incoming requests.
834 // Allowed values are "Exact" or "Equivalent".
835 //
836 // - Exact: match a request only if it exactly matches a specified rule.
837 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
838 // but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
839 // a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
840 //
841 // - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
842 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
843 // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
844 // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
845 //
846 // Defaults to "Equivalent"
847 // +optional
848 optional string matchPolicy = 9;
849
850 // NamespaceSelector decides whether to run the webhook on an object based
851 // on whether the namespace for that object matches the selector. If the
852 // object itself is a namespace, the matching is performed on
853 // object.metadata.labels. If the object is another cluster scoped resource,
854 // it never skips the webhook.
855 //
856 // For example, to run the webhook on any objects whose namespace is not
857 // associated with "runlevel" of "0" or "1"; you will set the selector as
858 // follows:
859 // "namespaceSelector": {
860 // "matchExpressions": [
861 // {
862 // "key": "runlevel",
863 // "operator": "NotIn",
864 // "values": [
865 // "0",
866 // "1"
867 // ]
868 // }
869 // ]
870 // }
871 //
872 // If instead you want to only run the webhook on any objects whose
873 // namespace is associated with the "environment" of "prod" or "staging";
874 // you will set the selector as follows:
875 // "namespaceSelector": {
876 // "matchExpressions": [
877 // {
878 // "key": "environment",
879 // "operator": "In",
880 // "values": [
881 // "prod",
882 // "staging"
883 // ]
884 // }
885 // ]
886 // }
887 //
888 // See
889 // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
890 // for more examples of label selectors.
891 //
892 // Default to the empty LabelSelector, which matches everything.
893 // +optional
894 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 5;
895
896 // ObjectSelector decides whether to run the webhook based on if the
897 // object has matching labels. objectSelector is evaluated against both
898 // the oldObject and newObject that would be sent to the webhook, and
899 // is considered to match if either object matches the selector. A null
900 // object (oldObject in the case of create, or newObject in the case of
901 // delete) or an object that cannot have labels (like a
902 // DeploymentRollback or a PodProxyOptions object) is not considered to
903 // match.
904 // Use the object selector only if the webhook is opt-in, because end
905 // users may skip the admission webhook by setting the labels.
906 // Default to the empty LabelSelector, which matches everything.
907 // +optional
908 optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 10;
909
910 // SideEffects states whether this webhook has side effects.
911 // Acceptable values are: None, NoneOnDryRun (webhooks created via v1beta1 may also specify Some or Unknown).
912 // Webhooks with side effects MUST implement a reconciliation system, since a request may be
913 // rejected by a future step in the admission chain and the side effects therefore need to be undone.
914 // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
915 // sideEffects == Unknown or Some.
916 optional string sideEffects = 6;
917
918 // TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
919 // the webhook call will be ignored or the API call will fail based on the
920 // failure policy.
921 // The timeout value must be between 1 and 30 seconds.
922 // Default to 10 seconds.
923 // +optional
924 optional int32 timeoutSeconds = 7;
925
926 // AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
927 // versions the Webhook expects. API server will try to use first version in
928 // the list which it supports. If none of the versions specified in this list
929 // supported by API server, validation will fail for this object.
930 // If a persisted webhook configuration specifies allowed versions and does not
931 // include any versions known to the API Server, calls to the webhook will fail
932 // and be subject to the failure policy.
933 // +listType=atomic
934 repeated string admissionReviewVersions = 8;
935
936 // MatchConditions is a list of conditions that must be met for a request to be sent to this
937 // webhook. Match conditions filter requests that have already been matched by the rules,
938 // namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
939 // There are a maximum of 64 match conditions allowed.
940 //
941 // The exact matching logic is (in order):
942 // 1. If ANY matchCondition evaluates to FALSE, the webhook is skipped.
943 // 2. If ALL matchConditions evaluate to TRUE, the webhook is called.
944 // 3. If any matchCondition evaluates to an error (but none are FALSE):
945 // - If failurePolicy=Fail, reject the request
946 // - If failurePolicy=Ignore, the error is ignored and the webhook is skipped
947 //
948 // +patchMergeKey=name
949 // +patchStrategy=merge
950 // +listType=map
951 // +listMapKey=name
952 // +optional
953 repeated MatchCondition matchConditions = 11;
954}
955
956// ValidatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and object without changing it.
957message ValidatingWebhookConfiguration {
958 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.
959 // +optional
960 optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
961
962 // Webhooks is a list of webhooks and the affected resources and operations.
963 // +optional
964 // +patchMergeKey=name
965 // +patchStrategy=merge
966 // +listType=map
967 // +listMapKey=name
968 repeated ValidatingWebhook Webhooks = 2;
969}
970
971// ValidatingWebhookConfigurationList is a list of ValidatingWebhookConfiguration.
972message ValidatingWebhookConfigurationList {
973 // Standard list metadata.
974 // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
975 // +optional
976 optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
977
978 // List of ValidatingWebhookConfiguration.
979 repeated ValidatingWebhookConfiguration items = 2;
980}
981
982// Validation specifies the CEL expression which is used to apply the validation.
983message Validation {
984 // Expression represents the expression which will be evaluated by CEL.
985 // ref: https://github.com/google/cel-spec
986 // CEL expressions have access to the contents of the API request/response, organized into CEL variables as well as some other useful variables:
987 //
988 // - 'object' - The object from the incoming request. The value is null for DELETE requests.
989 // - 'oldObject' - The existing object. The value is null for CREATE requests.
990 // - 'request' - Attributes of the API request([ref](/pkg/apis/admission/types.go#AdmissionRequest)).
991 // - 'params' - Parameter resource referred to by the policy binding being evaluated. Only populated if the policy has a ParamKind.
992 // - 'namespaceObject' - The namespace object that the incoming object belongs to. The value is null for cluster-scoped resources.
993 // - 'variables' - Map of composited variables, from its name to its lazily evaluated value.
994 // For example, a variable named 'foo' can be accessed as 'variables.foo'.
995 // - 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.
996 // See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz
997 // - 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the
998 // request resource.
999 //
1000 // The `apiVersion`, `kind`, `metadata.name` and `metadata.generateName` are always accessible from the root of the
1001 // object. No other metadata properties are accessible.
1002 //
1003 // Only property names of the form `[a-zA-Z_.-/][a-zA-Z0-9_.-/]*` are accessible.
1004 // Accessible property names are escaped according to the following rules when accessed in the expression:
1005 // - '__' escapes to '__underscores__'
1006 // - '.' escapes to '__dot__'
1007 // - '-' escapes to '__dash__'
1008 // - '/' escapes to '__slash__'
1009 // - Property names that exactly match a CEL RESERVED keyword escape to '__{keyword}__'. The keywords are:
1010 // "true", "false", "null", "in", "as", "break", "const", "continue", "else", "for", "function", "if",
1011 // "import", "let", "loop", "package", "namespace", "return".
1012 // Examples:
1013 // - Expression accessing a property named "namespace": {"Expression": "object.__namespace__ > 0"}
1014 // - Expression accessing a property named "x-prop": {"Expression": "object.x__dash__prop > 0"}
1015 // - Expression accessing a property named "redact__d": {"Expression": "object.redact__underscores__d > 0"}
1016 //
1017 // Equality on arrays with list type of 'set' or 'map' ignores element order, i.e. [1, 2] == [2, 1].
1018 // Concatenation on arrays with x-kubernetes-list-type use the semantics of the list type:
1019 // - 'set': `X + Y` performs a union where the array positions of all elements in `X` are preserved and
1020 // non-intersecting elements in `Y` are appended, retaining their partial order.
1021 // - 'map': `X + Y` performs a merge where the array positions of all keys in `X` are preserved but the values
1022 // are overwritten by values in `Y` when the key sets of `X` and `Y` intersect. Elements in `Y` with
1023 // non-intersecting keys are appended, retaining their partial order.
1024 // Required.
1025 optional string Expression = 1;
1026
1027 // Message represents the message displayed when validation fails. The message is required if the Expression contains
1028 // line breaks. The message must not contain line breaks.
1029 // If unset, the message is "failed rule: {Rule}".
1030 // e.g. "must be a URL with the host matching spec.host"
1031 // If the Expression contains line breaks. Message is required.
1032 // The message must not contain line breaks.
1033 // If unset, the message is "failed Expression: {Expression}".
1034 // +optional
1035 optional string message = 2;
1036
1037 // Reason represents a machine-readable description of why this validation failed.
1038 // If this is the first validation in the list to fail, this reason, as well as the
1039 // corresponding HTTP response code, are used in the
1040 // HTTP response to the client.
1041 // The currently supported reasons are: "Unauthorized", "Forbidden", "Invalid", "RequestEntityTooLarge".
1042 // If not set, StatusReasonInvalid is used in the response to the client.
1043 // +optional
1044 optional string reason = 3;
1045
1046 // messageExpression declares a CEL expression that evaluates to the validation failure message that is returned when this rule fails.
1047 // Since messageExpression is used as a failure message, it must evaluate to a string.
1048 // If both message and messageExpression are present on a validation, then messageExpression will be used if validation fails.
1049 // If messageExpression results in a runtime error, the runtime error is logged, and the validation failure message is produced
1050 // as if the messageExpression field were unset. If messageExpression evaluates to an empty string, a string with only spaces, or a string
1051 // that contains line breaks, then the validation failure message will also be produced as if the messageExpression field were unset, and
1052 // the fact that messageExpression produced an empty string/string with only spaces/string with line breaks will be logged.
1053 // messageExpression has access to all the same variables as the `expression` except for 'authorizer' and 'authorizer.requestResource'.
1054 // Example:
1055 // "object.x must be less than max ("+string(params.max)+")"
1056 // +optional
1057 optional string messageExpression = 4;
1058}
1059
1060// Variable is the definition of a variable that is used for composition. A variable is defined as a named expression.
1061// +structType=atomic
1062message Variable {
1063 // Name is the name of the variable. The name must be a valid CEL identifier and unique among all variables.
1064 // The variable can be accessed in other expressions through `variables`
1065 // For example, if name is "foo", the variable will be available as `variables.foo`
1066 optional string Name = 1;
1067
1068 // Expression is the expression that will be evaluated as the value of the variable.
1069 // The CEL expression has access to the same identifiers as the CEL expressions in Validation.
1070 optional string Expression = 2;
1071}
1072
1073// WebhookClientConfig contains the information to make a TLS
1074// connection with the webhook
1075message WebhookClientConfig {
1076 // `url` gives the location of the webhook, in standard URL form
1077 // (`scheme://host:port/path`). Exactly one of `url` or `service`
1078 // must be specified.
1079 //
1080 // The `host` should not refer to a service running in the cluster; use
1081 // the `service` field instead. The host might be resolved via external
1082 // DNS in some apiservers (e.g., `kube-apiserver` cannot resolve
1083 // in-cluster DNS as that would be a layering violation). `host` may
1084 // also be an IP address.
1085 //
1086 // Please note that using `localhost` or `127.0.0.1` as a `host` is
1087 // risky unless you take great care to run this webhook on all hosts
1088 // which run an apiserver which might need to make calls to this
1089 // webhook. Such installs are likely to be non-portable, i.e., not easy
1090 // to turn up in a new cluster.
1091 //
1092 // The scheme must be "https"; the URL must begin with "https://".
1093 //
1094 // A path is optional, and if present may be any string permissible in
1095 // a URL. You may use the path to pass an arbitrary string to the
1096 // webhook, for example, a cluster identifier.
1097 //
1098 // Attempting to use a user or basic auth e.g. "user:password@" is not
1099 // allowed. Fragments ("#...") and query parameters ("?...") are not
1100 // allowed, either.
1101 //
1102 // +optional
1103 optional string url = 3;
1104
1105 // `service` is a reference to the service for this webhook. Either
1106 // `service` or `url` must be specified.
1107 //
1108 // If the webhook is running within the cluster, then you should use `service`.
1109 //
1110 // +optional
1111 optional ServiceReference service = 1;
1112
1113 // `caBundle` is a PEM encoded CA bundle which will be used to validate the webhook's server certificate.
1114 // If unspecified, system trust roots on the apiserver are used.
1115 // +optional
1116 optional bytes caBundle = 2;
1117}
1118
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