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Slave databases are read-only.  Only the master database can be used
for password change.  The master kdc must be listed in the KDC list
either as an additional

  kdc=master-kdc

or

  master_kdc=master-kdc

entry or both.

Jeffrey Altman


Sachin Punadikar wrote:
> Hello,
> 
> I have Kerberos (MIT 1.5.4 release) configured as master and slave. At the
> client side krb5.conf file I am mentioning kdc=slave-kdc. And this is the
> only entry in the krb5.conf file which talks about KDC.
> In this scenario if the attribute "needchange" is set then, it prompts for
> the password change but finally it fails to get the ticket with the newly
> changed password. This may be because it is trying to get the ticket from
> the slave. But slave will not have updated database at that moment.
> So is it recommended to try for password change, only when "master_kdc"
> entry in the krb5.conf file exists?
> Or is there any mechanism by which one can update slave KDC database
> instantenously, so above scenario will work ?
> 
> Please advice.
> 
> - Sachin.
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