deployment/install.sh failed

[yanruogu]

environment：
os： centos 7.4
kubernetes: 1.11.2

lxcfs-daemonset.yaml can be executed normally

However, when I perform a deploy/install.sh installation：

[[email protected] ~/lxcfs-admission-webhook]deployment/install.sh
creating certs in tmpdir /tmp/tmp.Fp7lKhMGHo 
Generating RSA private key, 2048 bit long modulus
................................................+++
........+++
e is 65537 (0x10001)
certificatesigningrequest.certificates.k8s.io/lxcfs-admission-webhook-svc.default created
NAME                                  AGE       REQUESTOR          CONDITION
lxcfs-admission-webhook-svc.default   0s        kubernetes-admin   Pending
certificatesigningrequest.certificates.k8s.io/lxcfs-admission-webhook-svc.default approved
secret/lxcfs-admission-webhook-certs created
NAME                            TYPE      DATA      AGE
lxcfs-admission-webhook-certs   Opaque    2         0s
deployment.apps/lxcfs-admission-webhook-deployment created
service/lxcfs-admission-webhook-svc created
error: error validating "deployment/mutatingwebhook-ca-bundle.yaml": error validating data: ValidationError(MutatingWebhookConfiguration.webhooks[0].clientConfig.caBundle): invalid type for io.k8s.api.admissionregistration.v1beta1.WebhookClientConfig.caBundle: got "array", expected "string"; if you choose to ignore these errors, turn validation off with --validate=false

help

[xigang]

@yanruogu https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/

Prerequisites

• Ensure that the Kubernetes cluster is at least as new as v1.16 (to use admissionregistration.k8s.io/v1), or v1.9 (to use admissionregistration.k8s.io/v1beta1).

• Ensure that MutatingAdmissionWebhook and ValidatingAdmissionWebhook admission controllers are enabled. Here is a recommended set of admission controllers to enable in general.

• Ensure that the admissionregistration.k8s.io/v1 or admissionregistration.k8s.io/v1beta1 API is enabled.

[zijiwork]

你好， kube-apiserver已经开启了MutatingAdmissionWebhook,ValidatingAdmissionWebhook
也是提示这个错误
error: error validating "mutatingwebhook-ca-bundle.yaml": error validating data: ValidationError(MutatingWebhookConfiguration.webhooks[0].clientConfig.caBundle): invalid type for io.k8s.api.admissionregistration.v1beta1.WebhookClientConfig.caBundle: got "array", expected "string"; if you choose to ignore these errors, turn validation off with --validate=false

[fjibj]

replace deployment/webhook-patch-ca-bundle.sh:
export CA_BUNDLE=$(kubectl config view --raw -o json | jq -r '.clusters[] | select(.name == "'$(kubectl config current-context)'") | .cluster."certificate-authority-data"')