[Freeipa-users] ipa: ERROR: did not receive Kerberos credentials

Thu Apr 10 16:10:15 UTC 2014

On Thu, Apr 10, 2014 at 11:55:05AM -0400, Rashard.Kelly at sita.aero wrote:
> I can run commands after changing the permissions on the files, but why is 
> it generating files that are not world readable?
> 
> [rkelly at replicahostname ~]$ ll
> total 84
> -rw-r--r--  1 root    root     2428 Apr  9 22:34 krb5cc_0
> -rw-r--r--  1 xs05144 xs05144  1146 Apr  3 16:10 krb5cc_1599000020_u5RRhd
> -rw-r--r--  1 rkelly  rkelly    569 Apr 10 15:14 krb5cc_1599100000_CUkupo
> -rw-r--r--  1 rkelly  rkelly   1873 Apr  9 23:40 krb5cc_1599100000_ZekyY0
> -rw-r--r--  1 apache  apache    662 Apr 10 06:02 krb5cc_48

Please don't do this, the credential cache files are similar to your
password, only the user itself should be allowed to read it.

When you use ls with the -Z option there is a '?' where the SELinux
context should be printed. Maybe there are issues with your SELinux
setup which prevent access to the ccache files? Can you try SELinux in
permissive mode? If there are still issues running klist which strace
might give some more details why the ccache file cannot be read.

HTH

bye,
Sumit

> 
> [rkelly at replicahostname ~]$ klist
> Ticket cache: FILE:/tmp/krb5cc_1599100000_CUkupo
> Default principal: rkelly at DOMAIN
> 
> Valid starting     Expires            Service principal
> 04/10/14 15:14:40  04/11/14 15:14:40  krbtgt/IPA2.DC.SITA.AERO at DOMAIN
> 
> [rkelly at replicahostname ~]$ ipa user-find kelly
> --------------
> 1 user matched
> --------------
>   User login: rkelly
>   First name: Rashard
>   Last name: KElly
>   Home directory: /home/rkelly
>   Login shell: /bin/sh
>   Email address: rkelly at domain
>   UID: 1599100000
>   GID: 1599100000
>   Account disabled: False
>   Password: True
>   Kerberos keys available: True
> ----------------------------
> Number of entries returned 1
> ----------------------------
> Thank You,
> Rashard Kelly
> 
> 
> 
> From:   Rashard.Kelly at sita.aero
> To:     Alexander Bokovoy <abokovoy at redhat.com>
> Cc:     freeipa-users at redhat.com
> Date:   04/10/2014 08:42 AM
> Subject:        Re: [Freeipa-users] ipa: ERROR: did not receive Kerberos 
> credentials
> Sent by:        freeipa-users-bounces at redhat.com
> 
> 
> 
> The krb5 files are not readable by everyone. There are multiple krb5 files 
> in tmp, should they automatically be readable by all? BTW our users do not 
> have home directories if that makes a difference. 
> 
> [rkelly at replicahostname ~]$ ls -lZ /tmp |grep krb 
> -rw-------  root    root    ?                                krb5cc_0 
> -rw-------  xs05144 xs05144 ? krb5cc_1599000020_u5RRhd 
> -rw-------  rkelly  rkelly  ? krb5cc_1599100000_oKtZFE 
> -rw-------  rkelly  rkelly  ? krb5cc_1599100000_ZekyY0 
> -rw-------  apache  apache  ?                                krb5cc_48 
> 
> ipa-server-selinux-3.0.0-37.el6.x86_64 
> ipa-client-3.0.0-37.el6.x86_64 
> ipa-server-3.0.0-37.el6.x86_64 
> ipa-pki-common-theme-9.0.3-7.el6.noarch 
> libipa_hbac-python-1.9.2-129.el6_5.4.x86_64 
> ipa-python-3.0.0-37.el6.x86_64 
> ipa-admintools-3.0.0-37.el6.x86_64 
> ipa-pki-ca-theme-9.0.3-7.el6.noarch 
> libipa_hbac-1.9.2-129.el6_5.4.x86_64 
> python-iniparse-0.3.1-2.1.el6.noarch 
> 
> [rkelly at replicahostname ~]$ cat /proc/mounts | grep /tmp 
> /dev/mapper/system-tmp_vol /tmp ext4 rw,relatime,barrier=1,data=ordered 0 
> 0 
> [rkelly at replicahostname ~]$ echo $KRB5CCNAME 
> FILE:/tmp/krb5cc_1599100000_oKtZFE 
> 
> [rkelly at replicahostname ~]$ ls -lZ /tmp/krb5cc_1599100000_oKtZFE 
> -rw------- rkelly rkelly ? /tmp/krb5cc_1599100000_oKtZFE 
> 
> [rkelly at replicahostname ~]$ KRB5_TRACE=/dev/stderr kinit 
> [14559] 1397132474.221287: Getting initial credentials for rkelly at DOMAIN 
> [14559] 1397132474.221510: Sending request (191 bytes) to DOMAIN 
> [14559] 1397132474.221677: Sending initial UDP request to dgram 
> 10.228.20.25:88 
> [14559] 1397132474.225248: Received answer from dgram 10.228.20.25:88 
> [14559] 1397132474.225287: Response was from master KDC 
> [14559] 1397132474.225306: Received error from KDC: -1765328359/Additional 
> pre-authentication required 
> [14559] 1397132474.225331: Processing preauth types: 136, 19, 2, 133 
> [14559] 1397132474.225343: Selected etype info: etype aes256-cts, salt 
> "IPA2.DC.SITA.AEROrkelly", params "" 
> [14559] 1397132474.225346: Received cookie: MIT 
> Password for rkelly at DOMAIN: 
> [14559] 1397132484.255381: AS key obtained for encrypted timestamp: 
> aes256-cts/DBF7 
> [14559] 1397132484.255432: Encrypted timestamp (for 1397132484.255390): 
> plain 301AA011180F32303134303431303132323132345AA105020303E59E, encrypted 
> 321A6A1E297880D1E2D1BF069D6D44136D7A2A0D3AAFC3209CB9B4E5BAAE59E928559E47FD0A140F68D377A8398D7CAB4B735D0612247A7C 
> 
> [14559] 1397132484.255453: Preauth module encrypted_timestamp (2) 
> (flags=1) returned: 0/Success 
> [14559] 1397132484.255457: Produced preauth for next request: 133, 2 
> [14559] 1397132484.255474: Sending request (286 bytes) to DOMAIN (master) 
> [14559] 1397132484.255560: Sending initial UDP request to dgram 
> 10.228.20.25:88 
> [14559] 1397132484.262563: Received answer from dgram 10.228.20.25:88 
> [14559] 1397132484.262593: Processing preauth types: 19 
> [14559] 1397132484.262600: Selected etype info: etype aes256-cts, salt 
> "DOMAINrkelly", params "" 
> [14559] 1397132484.262603: Produced preauth for next request: (empty) 
> [14559] 1397132484.262609: AS key determined by preauth: aes256-cts/DBF7 
> [14559] 1397132484.262650: Decrypted AS reply; session key is: 
> aes256-cts/B097 
> [14559] 1397132484.262664: FAST negotiation: available 
> [14559] 1397132484.262681: Initializing FILE:/tmp/krb5cc_1599100000_oKtZFE 
> with default princ rkelly at DOMAIN 
> 
> [rkelly at replicahostname ~]$ KRB5_TRACE=/dev/stderr klist 
> klist: Credentials cache permissions incorrect while setting cache flags 
> (ticket cache FILE:/tmp/krb5cc_1599100000_oKtZFE) 
> 
> -- 
> 
> 
> Thank You, 
> Rashard Kelly
> 
> 
> 
> 
> From:        Alexander Bokovoy <abokovoy at redhat.com> 
> To:        Rashard.Kelly at sita.aero 
> Cc:        freeipa-users at redhat.com 
> Date:        04/10/2014 03:25 AM 
> Subject:        Re: [Freeipa-users] ipa: ERROR: did not receive Kerberos 
> credentials 
> 
> 
> 
> On Thu, 10 Apr 2014, Rashard.Kelly at sita.aero wrote:
> >Hello all
> >
> >
> >When I try to execute and commands from the an ipa-replica I get
> >
> >[rkelly at replicahostname ~]$ ipa user-find
> >ipa: ERROR: did not receive Kerberos credentials
> >[rkelly at replicahostname ~]$ kinit
> >Password for rkelly at IPA2.DC.SITA.AERO:
> >[rkelly at replicahostname ~]$ ipa user-find
> >ipa: ERROR: did not receive Kerberos credentials
> >[rkelly at replicahostname ~]$ klist
> >klist: Credentials cache permissions incorrect while setting cache flags
> >(ticket cache FILE:/tmp/krb5cc_1599100000_qojy7v)
> >
> >I thought perhaps the two are out of sync
> >[root at replicahostname ~]# ipa-replica-manage re-initialize --from
> >liipaxs010p.ipa2.dc.sita.aero
> >Invalid password
> >
> >
> >ipa-replica-conncheck says communication is ok.
> >
> >I looked at the httpd, secure,and krb log and none show any activity when
> >I execute the commands above. Im lost any clues as to where I can look 
> for
> >answers?
> Let's put IPA commands aside and first find out what's wrong with your
> Kerberos infra. Looking at your ticket cache file name
> (FILE:/tmp/krb5cc_1599100000_qojy7v) I assume you have come to this
> machine via SSH and the ticket cache is created by the sshd or sssd.
> 
> The message you received out of klist is shown if ccache file is either:
>  - unaccessible for the user
>  - is a directory rather than a file
>  - is a broken symlink
>  - blocked by some app with explusive locks
>  - cannot be open for a write
> 
> Please provide output of 
> $ cat /proc/mounts | grep /tmp
> $ echo $KRB5CCNAME
> $ ls -lZ /tmp/krb5cc_1599100000_qojy7v
> $ KRB5_TRACE=/dev/stderr kinit
> $ KRB5_TRACE=/dev/stderr klist
> 
> You can temporarily overcome this issue by selecting a different ticket
> cache by setting KRB5CCNAME environmental variable:
> 
> $ export KRB5CCNAME=$HOME/.krb5cc
> $ kinit
> $ ipa user-find
> ...
> 
> However, it would be good to solve the issue to avoid repeating these 
> problems
> 
> 
> 
> -- 
> / Alexander Bokovoy
> 
> 
> This document is strictly confidential and intended only for use by the 
> addressee unless otherwise stated. If you are not the intended recipient, 
> please notify the sender immediately and delete it from your system. See 
> you at 2014 Air Transport IT Summit, 17-19 June 2014 Click here to 
> register http://www.sitasummit.aero 
> _______________________________________________
> Freeipa-users mailing list
> Freeipa-users at redhat.com
> https://www.redhat.com/mailman/listinfo/freeipa-users
> 
> This document is strictly confidential and intended only for use by the
> addressee unless otherwise stated.  If you are not the intended recipient,
> please notify the sender immediately and delete it from your system.
> See you at 2014 Air Transport IT Summit, 17-19 June 2014
> 
> Click here to register  http://www.sitasummit.aero
> 
> 

> _______________________________________________
> Freeipa-users mailing list
> Freeipa-users at redhat.com
> https://www.redhat.com/mailman/listinfo/freeipa-users