[KERBEROS]Invalid KDC administrator credentials

Hi Everyone, 

While kerberizing my cluster using MIT-KDC and Ambari Kerberos Wizard. I am facing the following window popup at the time of Testing client after client installation saying :

I'm using ambari 2.7.8
HDFS 3.3.6

UBUNTU 22

config of krb5.conf

[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log
[libdefaults]
default_realm = EXAMPLE.COM
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
[realms]
EXAMPLE.COM = {
kdc = admin.com
admin_server = admin.com
}
[domain_realm]
.example.com = EXAMPLE.COM
example.com = EXAMPLE.COM

config of /etc/hostname

list principal is

root@admin:/# kadmin.local -q "listprincs"
Authenticating as principal admin/admin@EXAMPLE.COM with password.
K/M@EXAMPLE.COM
admin/admin@EXAMPLE.COM
kadmin/admin@EXAMPLE.COM
kadmin/changepw@EXAMPLE.COM
krbtgt/EXAMPLE.COM@EXAMPLE.COM

ambari-server.log

:KERBEROS_SERVICE_CHECK, inputs :{HAS_RESOURCE_FILTERS=true}, resourceFilters: [RequestResourceFilter{serviceName='KERBEROS', componentName='null', hostNames=[]}], exclusive: false, clusterName :hadoop
2024-05-30 05:12:20,298  WARN [ambari-client-thread-108] KDCKerberosOperationHandler:329 - Failed to kinit as the KDC administrator user, admin/admin@EXAMPLE.COM:
	ExitCode: 1
	STDOUT: 
	STDERR: kinit: Server not found in Kerberos database while getting initial credentials

2024-05-30 05:12:20,299 ERROR [ambari-client-thread-108] KerberosHelperImpl:2507 - Cannot validate credentials: org.apache.ambari.server.serveraction.kerberos.KerberosAdminAuthenticationException: Invalid KDC administrator credentials.
The KDC administrator credentials must be set as a persisted or temporary credential resource.This may be done by issuing a POST (or PUT for updating) to the /api/v1/clusters/:clusterName/credentials/kdc.admin.credential API entry point with the following payload:
{
  "Credential" : {
    "principal" : "(PRINCIPAL)", "key" : "(PASSWORD)", "type" : "(persisted|temporary)"}
  }
}
2024-05-30 05:12:20,299 ERROR [ambari-client-thread-108] CreateHandler:80 - Bad request received: Invalid KDC administrator credentials.
The KDC administrator credentials must be set as a persisted or temporary credential resource.This may be done by issuing a POST (or PUT for updating) to the /api/v1/clusters/:clusterName/credentials/kdc.admin.credential API entry point with the following payload:
{
  "Credential" : {
    "principal" : "(PRINCIPAL)", "key" : "(PASSWORD)", "type" : "(persisted|temporary)"}
  }
}
2024-05-30 05:12:20,733  WARN [agent-report-processor-3] ActionManager:162 - The task 1304 is not in progress, ignoring update
2024-05-30 05:12:21,052  WARN [agent-report-processor-1] ActionManager:162 - The task 1302 is not in progress, ignoring update