Documentation
¶
Overview ¶
Package webhook implements the authorizer.Authorizer interface using HTTP webhooks.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type WebhookAuthorizer ¶
type WebhookAuthorizer struct {
*webhook.GenericWebhook
// contains filtered or unexported fields
}
func New ¶
func New(kubeConfigFile string, authorizedTTL, unauthorizedTTL time.Duration) (*WebhookAuthorizer, error)
New creates a new WebhookAuthorizer from the provided kubeconfig file.
The config's cluster field is used to refer to the remote service, user refers to the returned authorizer.
# clusters refers to the remote service.
clusters:
- name: name-of-remote-authz-service
cluster:
certificate-authority: /path/to/ca.pem # CA for verifying the remote service.
server: https://authz.example.com/authorize # URL of remote service to query. Must use 'https'.
# users refers to the API server's webhook configuration.
users:
- name: name-of-api-server
user:
client-certificate: /path/to/cert.pem # cert for the webhook plugin to use
client-key: /path/to/key.pem # key matching the cert
For additional HTTP configuration, refer to the kubeconfig documentation http://kubernetes.io/v1.1/docs/user-guide/kubeconfig-file.html.
func (*WebhookAuthorizer) Authorize ¶
func (w *WebhookAuthorizer) Authorize(attr authorizer.Attributes) (err error)
Authorize makes a REST request to the remote service describing the attempted action as a JSON serialized api.authorization.v1beta1.SubjectAccessReview object. An example request body is provided bellow.
{
"apiVersion": "authorization.k8s.io/v1beta1",
"kind": "SubjectAccessReview",
"spec": {
"resourceAttributes": {
"namespace": "kittensandponies",
"verb": "GET",
"group": "group3",
"resource": "pods"
},
"user": "jane",
"group": [
"group1",
"group2"
]
}
}
The remote service is expected to fill the SubjectAccessReviewStatus field to either allow or disallow access. A permissive response would return:
{
"apiVersion": "authorization.k8s.io/v1beta1",
"kind": "SubjectAccessReview",
"status": {
"allowed": true
}
}
To disallow access, the remote service would return:
{
"apiVersion": "authorization.k8s.io/v1beta1",
"kind": "SubjectAccessReview",
"status": {
"allowed": false,
"reason": "user does not have read access to the namespace"
}
}
Source Files