On 09/19/2012 12:11 PM, Jakub Hrozek wrote: > On Wed, Sep 19, 2012 at 12:00:08PM -0400, Michael Mercier wrote: >> On 2012-09-18, at 4:03 PM, Jakub Hrozek wrote: >> >>> On Tue, Sep 18, 2012 at 02:38:13PM -0400, Michael Mercier wrote: >>>> On 2012-09-18, at 4:03 AM, Jakub Hrozek wrote: >>>> >>>>> On Mon, Sep 17, 2012 at 11:17:47AM -0400, Dmitri Pal wrote: >>>>>>> [root@ipaserver2 ~]ifdown eth0 # NOTE: ipaserver2 is 172.16.112.8 >>>>>>> >>>>>>> [root@ipaclient ~]# SSSD_KRB5_LOCATOR_DEBUG=1 kinit mike >>>>>>> [sssd_krb5_locator] sssd_krb5_locator_init called >>>>>>> [sssd_krb5_locator] Found [172.16.112.8] in >>>>>>> [/var/lib/sss/pubconf/kdcinfo.MPLS.LOCAL]. >>>>>>> [sssd_krb5_locator] sssd_realm[MPLS.LOCAL] requested realm[MPLS.LOCAL] >>>>>>> family[0] socktype[2] locate_service[1] >>>>>>> [sssd_krb5_locator] addr[172.16.112.8:88] family[2] socktype[2] >>>>>>> [sssd_krb5_locator] [172.16.112.8] used >>>>>>> [sssd_krb5_locator] sssd_krb5_locator_close called >>>>>>> [sssd_krb5_locator] sssd_krb5_locator_init called >>>>>>> [sssd_krb5_locator] Found [172.16.112.8] in >>>>>>> [/var/lib/sss/pubconf/kdcinfo.MPLS.LOCAL]. >>>>>>> [sssd_krb5_locator] sssd_realm[MPLS.LOCAL] requested realm[MPLS.LOCAL] >>>>>>> family[0] socktype[1] locate_service[1] >>>>>>> [sssd_krb5_locator] addr[172.16.112.8:88] family[2] socktype[1] >>>>>>> [sssd_krb5_locator] [172.16.112.8] used >>>>>>> [sssd_krb5_locator] sssd_krb5_locator_close called >>>>>>> kinit: Cannot contact any KDC for realm 'MPLS.LOCAL' while getting >>>>>>> initial credentials >>>>>> Jakub, does this make sense to you? >>>>>> >>>>> As stated elsewhere in this thread, bare kinit does not contact the SSSD >>>>> at all. You want to go through the PAM stack (with "su - mike" or "ssh >>>>> mike@ipaclient") in order to contact the SSSD so that the SSSD refreshes >>>>> the file. >>>>> >>>>> Does using "su - mike" refresh the file? >>>> When performing an 'su - mike' I will occasionally see a short delay (~2 >>>> seconds) when bringing the interfaces up and down on the servers. >>>> >>>> e.g. >>>> >>>> [root@ipaclient sssd]# su - mike >>> ^^ Sorry, but can you re-run the test again and either su from another >>> non-root user or ssh into the client for instance? The reason is that >>> performing su as root would not contact the SSSD at all either. The >>> default PAM configuration for su includes "pam_rootok.so" which just >>> returns PAM_SUCCESS if the user who performs su has UID=0. >> Hello, >> >> [mike@ipaclient ~]$ su - eric >> Password: # NOTE: no delay >> [eric@ipaclient ~]$ exit >> logout >> >> [root@ipaserver ~]ifdown eth0 >> >> [mike@ipaclient ~]$ su - eric >> Password: # NOTE: there is a delay here, ~5 seconds >> [eric@ipaclient ~]$ exit >> logout >> >> [root@ipaserver ~]ifup eth0 >> >> [root@ipaserver2 ~]ifdown eth0 >> >> [mike@ipaclient ~]$ su - eric >> Password: # NOTE: no delay >> [eric@ipaclient ~]$exit >> logout >> >> [root@ipaserver ~]ifdown eth0 >> >> [root@ipaserver2 ~]ifup eth0 >> >> [mike@ipaclient ~]$ su - eric >> Password: # NOTE: no delay >> [eric@ipaclient ~]$ exit >> logout >> >> There does not appear to be any problems when doing an su -. >> > I agree. I think that the SSSD fails over just fine. > >> An addition note is that the ipaclient system had been sitting idle all >> night. Right before starting this test, I had to unlock the workstation. > The unlock (if perfomed through GDM at least) would trigger an auth and > by extension going online/offline. > > What I suspect was happening is that the kinit just contacted a KDC that was > present in the kdcinfo files, but down without the Kerberos libraries > knowing it was down -- and without a mechanism to tell the SSSD to go > and try another server. We're tracking this as a future enhancement..
Do you have a ticket handy? > > Thank you for testing, Mike! -- Thank you, Dmitri Pal Sr. Engineering Manager for IdM portfolio Red Hat Inc. ------------------------------- Looking to carve out IT costs? www.redhat.com/carveoutcosts/ _______________________________________________ Freeipa-users mailing list Freeipa-users@redhat.com https://www.redhat.com/mailman/listinfo/freeipa-users
