Kerberos KDC no working

[#1]

Kerberos not communicating while add Peer between two cluster's for HDFS Replication.

Error msg : peer kdc host is not reachable on port 88 .Please ensure that KDC is up and no firewalls are blocking port 88

[#2]

@Ravirakunapu 

Can you check the "/etc/krb5.conf"  file present on the host which is showing the error  "kdc host is not reachable on port 88" ?

Checks from Client machine:

Then verify what is the hostname for KDC mentioned in this file?

suppose kdc hostname is "kdc.example.com" then check if you are able to access that hhostname & port from the problematic machine?

# telnet kdc.example.com 88
(OR)
# nc -v kdc.example.com 88

.

Also please verify if the "/etc/hosts" file is mapped to correct hostname& port for the kdc.example.com?  

# cat /etc/hosts

.

On the KDC host

Check on the KDC side is the port 88 is listening  and iptables/firewall is disabled?

# netstat -tnlpa | grep $PID_Of_KDC

# service iptables status
# systemctl status firewalld

[#3]

@jsensharma 

# telnet kdc.example.com 88 is working (but from CM >> Backup>>Add Peers >> from here it is not working)

# cat /etc/hosts - Mapping was correct

# netstat -tnlpa | grep $PID_Of_KDC
tcp 0 0.0.0.0:88 lISTEN 68214/krb5kdc

# service iptables status
# systemctl status firewalld - Command not found

[#4]

is this issue fixed? 

[#5]

@NCBank 

Can you start a new thread and tag me. Please include your logs or error message. The Thread you are updating is OLD.