Hi,

On Sat, Jun 28, 2025 at 7:33 PM Felix O via FreeIPA-users <
[email protected]> wrote:

> Hi again,
> Further troubleshooting has not proven successful. I think that this is
> partly caused by me not understanding what the No valid negotiate header
> error actually means. Most sources point in the direction of keytabs, so I
> suspect it has to do with LDAP/KDC communications?
>
> Also, when running getcert list, the following shows up at the top.
> However, I don't know if this is caused by the other errors, or causing
> them?
> Request ID '20210520194638':
>         status: CA_UNREACHABLE
>         ca-error: Error setting up ccache for "host" service on client
> using default keytab: Cannot contact any KDC for requested realm.
>
This error suggests that the kerberos server is not running.
What is the output of *ipactl status* ? Can you run *kdestroy -A; kinit
-kt **/etc/krb5.keytab host/`hostname`*

flo
>
>         stuck: no
>         key pair storage:
> type=FILE,location='/var/kerberos/krb5kdc/kdc.key'
>         certificate: type=FILE,location='/var/kerberos/krb5kdc/kdc.crt'
>         CA: IPA
>         issuer: CN=Certificate Authority,O=COMPANY.COM
>         subject: CN=ipa.company.com,O=COMPANY.COM
>         issued: 2025-06-09 11:07:31 UTC
>         expires: 2027-06-10 11:07:31 UTC
>         principal name: krbtgt/[email protected]
>         key usage:
> digitalSignature,nonRepudiation,keyEncipherment,dataEncipherment
>         eku: id-kp-serverAuth,id-pkinit-KPKdc
>         profile: KDCs_PKINIT_Certs
>         pre-save command:
>         post-save command: /usr/libexec/ipa/certmonger/renew_kdc_cert
>         track: yes
>         auto-renew: yes
>
> The other certificates listed are all valid and shows as MONITORING. This
> failing(?) certificate also shows up when running ipa-getcert list.
> If it's helpful, the instance is running in a CentOS 9 container.
>
> Felix
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