kinit: KDC can't fulfill requested option while renewing credentials
This document (000021417) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise Server 15
Situation
Users are unable to renew the ticket-granting ticket
testuser@nfs:/home/testuser> kinit -R kinit: KDC can't fulfill requested option while renewing credentials
Kerberos/KDC server reports TICKET NOT RENEWABLE
kdc:~ # tail -f -n 0 /var/log/krb5/krb5kdc.log Apr 08 09:57:42 kdc krb5kdc[5352](info): TGS_REQ (8 etypes {aes256-cts-hmac-sha1-96(18), aes128-cts-hmac-sha1-96(17), aes256-cts-hmac-sha384-192(20), aes128-cts-hmac-sha256-128(19), DEPRECATED:des3-cbc-sha1(16), DEPRECATED:arcfour-hmac(23), camellia128-cts-cmac(25), camellia256-cts-cmac(26)}) 10.10.1.251: TICKET NOT RENEWABLE: authtime 0, etypes {rep=UNSUPPORTED:(0)} testuser@domain.lab for krbtgt/domain.lab@domain.lab, KDC can't fulfill requested option
Resolution
To enable and configure the renewal lifetime, on the client side, please add the following line to the [libdefaults] section of the /etc/krb5.conf file:
renew_lifetime = 10d
Please ensure that the parameter is configured with the appropriate value.
After requesting a new ticket with kinit, verify with klist -f that the R flag is present
testuser@nfs:/home/testuser> klist -f Ticket cache: FILE:/tmp/krb5cc_1000 Default principal: testuser@domain.lab Valid starting Expires Service principal 04/08/2024 10:01:36 04/08/2024 10:11:36 krbtgt/domain.lab@domain.lab renew until 04/15/2024 10:01:36, Flags: RI 04/08/2024 10:01:42 04/08/2024 10:11:36 nfs/nfsserver.domain.lab@domain.lab renew until 04/15/2024 10:01:36, Flags: RT
Cause
Disclaimer
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- Document ID:000021417
- Creation Date: 08-Apr-2024
- Modified Date:19-Apr-2024
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- SUSE Linux Enterprise Server
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