Rancher Ldap auth provider issue

Rancher 2.x
1

Hi team,
LDAP entry details:

dn: uid=rancher-service-account,ou=rancher,dc=techavidity,dc=in

Created rancher local principal name same as ldap uid(rancher-service-account) …Likewise password is same …

Not aware it’s needed or not but created sa also same name as ldap distinguished name and localprincipal name .
[root@******* sa]# cat sa-full-role.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: fluentd-service-account
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: rancher-service-account
subjects:
- kind: ServiceAccount
  name: rancher-service-account
  namespace: rancher

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rancher-service-account
  namespace: rancher
rules:
  - apiGroups: ["*"]
    resources:
      - clusters
      - namespaces
    verbs:
      - get
      - watch
      - list

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: rancher-service-account
  namespace: rancher
secrets:
- name: rancher-sa-secret

In test and enable authentication place
entered local principal details

username: rancher-service-account
pasword: ******

If click enable getting authentication failed …Can anyone kindly point out my mistake and aid me to do ldap auth provider successfully …