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I have one node kerberos setup. I am able to query kdc using kadmin.local but when I try querying using kadmin( kadmin -p admin/admin@xxx.xxx.xxx) it fails with error: 

kadmin: Communication failure with server while initializing kadmin interface

Kerberos services are running fine.

tcp        0      0 0.0.0.0:88              0.0.0.0:*               LISTEN      
tcp6       0      0 :::88                   :::*                    LISTEN      - 
udp        0      0 0.0.0.0:88              0.0.0.0:*                           - 
udp6       0      0 :::88                   :::*                                - 
udp        0      0 0.0.0.0:750             0.0.0.0:*                           -
udp6       0      0 :::750                  :::*                                -

I have started the kerberos services using command: /etc/init.d/krb5-admin-server start

krb5.conf

[realms]
    xxx.xxx.xxx = {
            kdc = devkdc.xxx.xxx
            admin_server = devkdc.xxx.xxx
    }
Santosh Kumar
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1 Answers1

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Kerberos admin works on port 749 by default. Make sure that is opened and can be accessed from the client hosts.

Also see here for other possible solutions: https://serverfault.com/questions/803662/kerberos-error-while-initializing-kadmin-interface-from-admin-server/803994

SergioLeone
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