{ "description": "MutatingAdmissionPolicySpec is the specification of the desired behavior of the admission policy.", "properties": { "failurePolicy": { "description": "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.\n\nA policy is invalid if paramKind refers to a non-existent Kind. A binding is invalid if paramRef.name refers to a non-existent resource.\n\nfailurePolicy does not define how validations that evaluate to false are handled.\n\nAllowed values are Ignore or Fail. Defaults to Fail.", "type": [ "string", "null" ] }, "matchConditions": { "description": "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 matchConstraints. An empty list of matchConditions matches all requests. There are a maximum of 64 match conditions allowed.\n\nIf a parameter object is provided, it can be accessed via the `params` handle in the same manner as validation expressions.\n\nThe exact matching logic is (in order):\n 1. If ANY matchCondition evaluates to FALSE, the policy is skipped.\n 2. If ALL matchConditions evaluate to TRUE, the policy is evaluated.\n 3. If any matchCondition evaluates to an error (but none are FALSE):\n - If failurePolicy=Fail, reject the request\n - If failurePolicy=Ignore, the policy is skipped", "items": { "description": "MatchCondition represents a condition which must be fulfilled for a request to be sent to a webhook.", "properties": { "expression": { "description": "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:\n\n'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.\n See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz\n'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the\n request resource.\nDocumentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/\n\nRequired.", "type": "string" }, "name": { "description": "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')\n\nRequired.", "type": "string" } }, "required": [ "name", "expression" ], "type": [ "object", "null" ], "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-map-keys": [ "name" ], "x-kubernetes-list-type": "map", "x-kubernetes-patch-merge-key": "name", "x-kubernetes-patch-strategy": "merge" }, "matchConstraints": { "description": "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)", "properties": { "excludeResourceRules": { "description": "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)", "items": { "description": "NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.", "properties": { "apiGroups": { "description": "APIGroups is the API groups the resources belong to. '*' is all groups. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "apiVersions": { "description": "APIVersions is the API versions the resources belong to. '*' is all versions. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "operations": { "description": "Operations is the operations the admission hook cares about - CREATE, UPDATE, DELETE, CONNECT or * for all of those operations and any future admission operations that are added. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "resourceNames": { "description": "ResourceNames is an optional white list of names that the rule applies to. An empty set means that everything is allowed.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "resources": { "description": "Resources is a list of resources this rule applies to.\n\nFor example: 'pods' means pods. 'pods/log' means the log subresource of pods. '*' means all resources, but not subresources. 'pods/*' means all subresources of pods. '*/scale' means all scale subresources. '*/*' means all resources and their subresources.\n\nIf wildcard is present, the validation rule will ensure resources do not overlap with each other.\n\nDepending on the enclosing object, subresources might not be allowed. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "scope": { "description": "scope specifies the scope of this rule. Valid values are \"Cluster\", \"Namespaced\", and \"*\" \"Cluster\" means that only cluster-scoped resources will match this rule. Namespace API objects are cluster-scoped. \"Namespaced\" means that only namespaced resources will match this rule. \"*\" means that there are no scope restrictions. Subresources match the scope of their parent resource. Default is \"*\".", "type": [ "string", "null" ] } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "matchPolicy": { "description": "matchPolicy defines how the \"MatchResources\" list is used to match incoming requests. Allowed values are \"Exact\" or \"Equivalent\".\n\n- 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.\n\n- 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.\n\nDefaults to \"Equivalent\"", "type": [ "string", "null" ] }, "namespaceSelector": { "description": "A label selector is a label query over a set of resources. The result of matchLabels and matchExpressions are ANDed. An empty label selector matches all objects. A null label selector matches no objects.", "properties": { "matchExpressions": { "description": "matchExpressions is a list of label selector requirements. The requirements are ANDed.", "items": { "description": "A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.", "properties": { "key": { "description": "key is the label key that the selector applies to.", "type": "string" }, "operator": { "description": "operator represents a key's relationship to a set of values. Valid operators are In, NotIn, Exists and DoesNotExist.", "type": "string" }, "values": { "description": "values is an array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. This array is replaced during a strategic merge patch.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" } }, "required": [ "key", "operator" ], "type": [ "object", "null" ], "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "matchLabels": { "additionalProperties": { "type": [ "string", "null" ] }, "description": "matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels map is equivalent to an element of matchExpressions, whose key field is \"key\", the operator is \"In\", and the values array contains only \"value\". The requirements are ANDed.", "type": [ "object", "null" ] } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "objectSelector": { "description": "A label selector is a label query over a set of resources. The result of matchLabels and matchExpressions are ANDed. An empty label selector matches all objects. A null label selector matches no objects.", "properties": { "matchExpressions": { "description": "matchExpressions is a list of label selector requirements. The requirements are ANDed.", "items": { "description": "A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.", "properties": { "key": { "description": "key is the label key that the selector applies to.", "type": "string" }, "operator": { "description": "operator represents a key's relationship to a set of values. Valid operators are In, NotIn, Exists and DoesNotExist.", "type": "string" }, "values": { "description": "values is an array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. This array is replaced during a strategic merge patch.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" } }, "required": [ "key", "operator" ], "type": [ "object", "null" ], "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "matchLabels": { "additionalProperties": { "type": [ "string", "null" ] }, "description": "matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels map is equivalent to an element of matchExpressions, whose key field is \"key\", the operator is \"In\", and the values array contains only \"value\". The requirements are ANDed.", "type": [ "object", "null" ] } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "resourceRules": { "description": "ResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy matches. The policy cares about an operation if it matches _any_ Rule.", "items": { "description": "NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.", "properties": { "apiGroups": { "description": "APIGroups is the API groups the resources belong to. '*' is all groups. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "apiVersions": { "description": "APIVersions is the API versions the resources belong to. '*' is all versions. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "operations": { "description": "Operations is the operations the admission hook cares about - CREATE, UPDATE, DELETE, CONNECT or * for all of those operations and any future admission operations that are added. If '*' is present, the length of the slice must be one. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "resourceNames": { "description": "ResourceNames is an optional white list of names that the rule applies to. An empty set means that everything is allowed.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "resources": { "description": "Resources is a list of resources this rule applies to.\n\nFor example: 'pods' means pods. 'pods/log' means the log subresource of pods. '*' means all resources, but not subresources. 'pods/*' means all subresources of pods. '*/scale' means all scale subresources. '*/*' means all resources and their subresources.\n\nIf wildcard is present, the validation rule will ensure resources do not overlap with each other.\n\nDepending on the enclosing object, subresources might not be allowed. Required.", "items": { "type": [ "string", "null" ] }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "scope": { "description": "scope specifies the scope of this rule. Valid values are \"Cluster\", \"Namespaced\", and \"*\" \"Cluster\" means that only cluster-scoped resources will match this rule. Namespace API objects are cluster-scoped. \"Namespaced\" means that only namespaced resources will match this rule. \"*\" means that there are no scope restrictions. Subresources match the scope of their parent resource. Default is \"*\".", "type": [ "string", "null" ] } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "mutations": { "description": "mutations contain operations to perform on matching objects. mutations may not be empty; a minimum of one mutation is required. mutations are evaluated in order, and are reinvoked according to the reinvocationPolicy. The mutations of a policy are invoked for each binding of this policy and reinvocation of mutations occurs on a per binding basis.", "items": { "description": "Mutation specifies the CEL expression which is used to apply the Mutation.", "properties": { "applyConfiguration": { "description": "ApplyConfiguration defines the desired configuration values of an object.", "properties": { "expression": { "description": "expression will be evaluated by CEL to create an apply configuration. ref: https://github.com/google/cel-spec\n\nApply configurations are declared in CEL using object initialization. For example, this CEL expression returns an apply configuration to set a single field:\n\n\tObject{\n\t spec: Object.spec{\n\t serviceAccountName: \"example\"\n\t }\n\t}\n\nApply configurations may not modify atomic structs, maps or arrays due to the risk of accidental deletion of values not included in the apply configuration.\n\nCEL expressions have access to the object types needed to create apply configurations:\n\n- 'Object' - CEL type of the resource object. - 'Object.' - CEL type of object field (such as 'Object.spec') - 'Object.....` - CEL type of nested field (such as 'Object.spec.containers')\n\nCEL expressions have access to the contents of the API request, organized into CEL variables as well as some other useful variables:\n\n- '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.\n For example, a variable named 'foo' can be accessed as 'variables.foo'.\n- 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.\n See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz\n- 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the\n request resource.\n\nThe `apiVersion`, `kind`, `metadata.name` and `metadata.generateName` are always accessible from the root of the object. No other metadata properties are accessible.\n\nOnly property names of the form `[a-zA-Z_.-/][a-zA-Z0-9_.-/]*` are accessible. Required.", "type": [ "string", "null" ] } }, "type": [ "object", "null" ], "additionalProperties": false }, "jsonPatch": { "description": "JSONPatch defines a JSON Patch.", "properties": { "expression": { "description": "expression will be evaluated by CEL to create a [JSON patch](https://jsonpatch.com/). ref: https://github.com/google/cel-spec\n\nexpression must return an array of JSONPatch values.\n\nFor example, this CEL expression returns a JSON patch to conditionally modify a value:\n\n\t [\n\t JSONPatch{op: \"test\", path: \"/spec/example\", value: \"Red\"},\n\t JSONPatch{op: \"replace\", path: \"/spec/example\", value: \"Green\"}\n\t ]\n\nTo define an object for the patch value, use Object types. For example:\n\n\t [\n\t JSONPatch{\n\t op: \"add\",\n\t path: \"/spec/selector\",\n\t value: Object.spec.selector{matchLabels: {\"environment\": \"test\"}}\n\t }\n\t ]\n\nTo use strings containing '/' and '~' as JSONPatch path keys, use \"jsonpatch.escapeKey\". For example:\n\n\t [\n\t JSONPatch{\n\t op: \"add\",\n\t path: \"/metadata/labels/\" + jsonpatch.escapeKey(\"example.com/environment\"),\n\t value: \"test\"\n\t },\n\t ]\n\nCEL expressions have access to the types needed to create JSON patches and objects:\n\n- 'JSONPatch' - CEL type of JSON Patch operations. JSONPatch has the fields 'op', 'from', 'path' and 'value'.\n See [JSON patch](https://jsonpatch.com/) for more details. The 'value' field may be set to any of: string,\n integer, array, map or object. If set, the 'path' and 'from' fields must be set to a\n [JSON pointer](https://datatracker.ietf.org/doc/html/rfc6901/) string, where the 'jsonpatch.escapeKey()' CEL\n function may be used to escape path keys containing '/' and '~'.\n- 'Object' - CEL type of the resource object. - 'Object.' - CEL type of object field (such as 'Object.spec') - 'Object.....` - CEL type of nested field (such as 'Object.spec.containers')\n\nCEL expressions have access to the contents of the API request, organized into CEL variables as well as some other useful variables:\n\n- '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.\n For example, a variable named 'foo' can be accessed as 'variables.foo'.\n- 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.\n See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz\n- 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the\n request resource.\n\nCEL expressions have access to [Kubernetes CEL function libraries](https://kubernetes.io/docs/reference/using-api/cel/#cel-options-language-features-and-libraries) as well as:\n\n- 'jsonpatch.escapeKey' - Performs JSONPatch key escaping. '~' and '/' are escaped as '~0' and `~1' respectively).\n\nOnly property names of the form `[a-zA-Z_.-/][a-zA-Z0-9_.-/]*` are accessible. Required.", "type": [ "string", "null" ] } }, "type": [ "object", "null" ], "additionalProperties": false }, "patchType": { "description": "patchType indicates the patch strategy used. Allowed values are \"ApplyConfiguration\" and \"JSONPatch\". Required.", "type": "string" } }, "required": [ "patchType" ], "type": [ "object", "null" ], "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" }, "paramKind": { "description": "ParamKind is a tuple of Group Kind and Version.", "properties": { "apiVersion": { "description": "APIVersion is the API group version the resources belong to. In format of \"group/version\". Required.", "type": [ "string", "null" ] }, "kind": { "description": "Kind is the API kind the resources belong to. Required.", "type": [ "string", "null" ] } }, "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "reinvocationPolicy": { "description": "reinvocationPolicy indicates whether mutations may be called multiple times per MutatingAdmissionPolicyBinding as part of a single admission evaluation. Allowed values are \"Never\" and \"IfNeeded\".\n\nNever: These mutations will not be called more than once per binding in a single admission evaluation.\n\nIfNeeded: These mutations may be invoked more than once per binding for a single admission request and there is no guarantee of order with respect to other admission plugins, admission webhooks, bindings of this policy and admission policies. Mutations are only reinvoked when mutations change the object after this mutation is invoked. Required.", "type": [ "string", "null" ] }, "variables": { "description": "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.\n\nThe 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.", "items": { "description": "Variable is the definition of a variable that is used for composition. A variable is defined as a named expression.", "properties": { "expression": { "description": "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.", "type": "string" }, "name": { "description": "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`", "type": "string" } }, "required": [ "name", "expression" ], "type": [ "object", "null" ], "x-kubernetes-map-type": "atomic", "additionalProperties": false }, "type": [ "array", "null" ], "x-kubernetes-list-type": "atomic" } }, "type": "object", "additionalProperties": false, "$schema": "http://json-schema.org/schema#" }