all principals are created with own keytabs .... REALM is HADOOP.COM. HOSTNAME is server.hadoop.com. ssh keys are created inside hadoop cluster. I used Unlimited JCE Extensions for encreption type AES-256. And JSVC to use services as root. my hdfs-site.xml config is
my hdfs-site.xml follows configuration
**my issue is when I launch my datanode with root option I have this error : permission denied(publickey,password) **