Good afternoon, When attempting to cifs mount (with kerboros security mode) an Isilon volume from RHEL 7 I get the following error. ----------- [user@clientbox ~]# mount -t cifs //isilon.abc.example.com/share123/files /mnt/share123/files -o username=acoder,password=XXXXXX,sec=krb5 mount error(126): Required key not available ----------- First, here's my /etc/krb5.conf file: ----------- [libdefaults] default_realm = EXAMPLE.COM dns_lookup_realm = false dns_lookup_kdc = false ticket_lifetime = 24h renew_lifetime = 7d forwardable = true [realms] EXAMPLE.COM = { kdc = eu.example.com admin_server = eu.example.com } [domain_realm] .example.com = EXAMPLE.COM example.com = EXAMPLE.COM [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind.log ----------- where eu.example.com is my organization's AD server. Next, I show there are no current tickets stored on the client: ----------- [user@mybox ~]# klist klist: No credentials cache found (ticket cache FILE:/tmp/krb5cc_0) ----------- Finally, I try to obtain a ticket using kinit: ----------- [user@mybox ~]# kinit acoder kinit: Cannot contact any KDC for realm 'EXAMPLE.COM' while getting initial credentials ----------- I'm not showing any additional information in /var/log/messages or /var/log/krb5libs.log 1) Am I heading in the right direction? 2) If so, am I missing something from my krb5.conf file? What else do I need to check? -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html