I have laptop joined to domain AAA. Have two DFS namespace servers which are also AD DC with Win Server 2012 R2. NAS is Synology server with CIFS enabled/domain joined.
Servers:
- dc1.domain1.local - ip 10.8.0.3
- dc2.domain1.local - ip 10.8.0.27
- nas1.domain1.local - ip 10.8.0.7
- laptop.domain1.local - 10.91.0.2
All setup was working until recently. (don't know what happened, kernel upgrade? or Windows Update).
[sssd]
domains = domain1.local
config_file_version = 2
services = nss, pam
[domain/domain1.local]
ad_domain = domain1.local
krb5_realm = DOMAIN1.LOCAL
realmd_tags = manages-system joined-with-adcli
cache_credentials = True
enumerate = True
id_provider = ad
default_shell = /bin/bash
fallback_homedir = /home/%d/%u
krb5_lifetime = 1h
krb5_renewable_lifetime = 1d
krb5_renew_interval = 60s
ldap_id_mapping = True
krb5_store_password_if_offline = True
includedir /var/lib/sss/pubconf/krb5.include.d/
[logging]
default = FILE:/var/log/krb5libs.log
[libdefaults]
dns_lookup_realm = true
dns_lookup_kdc = true
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
clockskew = 300
rdns = false
default_ccache_name = KEYRING:persistent:%{uid}
/etc/request-key.d/cifs.spnego.conf
create cifs.spnego * * /usr/bin/cifs.upcall -t %k
I'm trying to mount share using
mount -t cifs -o sec=krb5,user=$USER,cruid=$USER,uid=$USER //dc1.domain1.local/namespace1 /mnt/mp1
I can go to /mnt/mp1. But I can't access anything behind like //dc1.domain1.local/namespace1/share1 which is on Synology server (/mnt/mp1/share1).
Logs on laptop during mounting:
[ 54.894236] No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount.
[ 55.036042] CIFS VFS: Autodisabling the use of server inode numbers on new server.
[ 55.036046] CIFS VFS: The server doesn't seem to support them properly or the files might be on different servers (DFS).
[ 55.036049] CIFS VFS: Hardlinks will not be recognized on this mount. Consider mounting with the "noserverino" option to silence this message.
When entering /mnt/mp1/share1 I got:
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: key description: cifs.spnego;0;0;39010000;ver=0x2;host=DC1.domain.local;ip4=10.8.0.7;sec=krb5;uid=0x460c22f4;creduid=0x460c22f4;user=admin;pid=0x923
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: ver=2
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: host=DC1.domain1.local
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: ip=10.8.0.7
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: sec=1
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: uid=1175200500
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: creduid=1175200500
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: user=admin
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: pid=2339
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: get_cachename_from_process_env: pathname=/proc/2339/environ
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: get_cachename_from_process_env: cachename = KEYRING:persistent:1175200500
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: get_existing_cc: default ccache is KEYRING:persistent:1175200500:krb_ccache_s3dU4cx
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: handle_krb5_mech: getting service ticket for server.poznan.tbhydro.net
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: handle_krb5_mech: obtained service ticket
mar 20 08:05:57 LAPTOP.DOMAIN1.LOCAL cifs.upcall[14414]: Exit status 0
Notice that it is asking for ticket for different host that it is resolved for IP address. (10.8.0.7 is host nas1.domain1.local).
And on nas1.domain1.local samba logs:
../source3/lib/access.c:338: [2019/03/20 08:08:50.530826, all 3, pid=26839] allow_access
Allowed connection from 10.91.0.2 (10.91.0.2)
../source3/smbd/oplock.c:1323: [2019/03/20 08:08:50.530929, locking 3, pid=26839] init_oplocks
init_oplocks: initializing messages.
../source3/smbd/process.c:1975: [2019/03/20 08:08:50.530968, all 3, pid=26839] process_smb
Transaction 0 of length 196 (0 toread)
../source3/smbd/smb2_negprot.c:281: [2019/03/20 08:08:50.531044, all 3, pid=26839] smbd_smb2_request_process_negprot
Selected protocol SMB3_11
../source3/auth/auth_generic.c:246: [2019/03/20 08:08:50.531084, all 3, pid=26839] auth_generic_prepare
make_auth_context_subsystem [NT_STATUS_OK]
../source3/auth/auth_generic.c:377: [2019/03/20 08:08:50.531400, all 3, pid=26839] auth_generic_prepare
gensec_set_remote_address: [NT_STATUS_OK]
../source3/smbd/smb2_server.c:2687: [2019/03/20 08:08:50.558318, all 3, pid=26839] smbd_smb2_request_dispatch
SMB2: cmd=SMB2_OP_NEGPROT [NT_STATUS_OK]
../source3/smbd/smb2_sesssetup.c:811: [2019/03/20 08:08:50.572723, all 3, pid=26839] smbd_smb2_session_setup_send
in_session_id 0
../source3/auth/auth_generic.c:246: [2019/03/20 08:08:50.572850, all 3, pid=26839] auth_generic_prepare
make_auth_context_subsystem [NT_STATUS_OK]
../source3/auth/auth_generic.c:377: [2019/03/20 08:08:50.572870, all 3, pid=26839] auth_generic_prepare
gensec_set_remote_address: [NT_STATUS_OK]
../source3/smbd/smb2_sesssetup.c:866: [2019/03/20 08:08:50.572877, all 3, pid=26839] smbd_smb2_session_setup_send
auth_generic_prepare [NT_STATUS_OK]
../source3/smbd/smb2_server.c:2687: [2019/03/20 08:08:50.572918, all 3, pid=26839] smbd_smb2_request_dispatch
SMB2: cmd=SMB2_OP_SESSSETUP [NT_STATUS_OK]
../source3/librpc/crypto/gse.c:503: [2019/03/20 08:08:50.599304, all 1, pid=26839] gse_get_server_auth_token
gss_accept_sec_context failed with [ Miscellaneous failure (see text): Failed to find cifs/dc1.domain1.local@DOMAIN1.LOCAL(kvno 76) in keytab MEMORY:cifs_srv_keytab (aes256-cts-hmac-sha1-96)]
../auth/gensec/spnego.c:544: [2019/03/20 08:08:50.599342, all 1, pid=26839] gensec_spnego_parse_negTokenInit
SPNEGO(gse_krb5) NEG_TOKEN_INIT failed: NT_STATUS_LOGON_FAILURE
../auth/gensec/spnego.c:719: [2019/03/20 08:08:50.599360, all 2, pid=26839] gensec_spnego_server_negTokenTarg
SPNEGO login failed: NT_STATUS_LOGON_FAILURE
../auth/gensec/gensec.c:476: [2019/03/20 08:08:50.599370, all 3, pid=26839] gensec_update_async_trigger
gensec_update [NT_STATUS_LOGON_FAILURE]
../source3/smbd/smb2_server.c:3111: [2019/03/20 08:08:50.599393, all 3, pid=26839] smbd_smb2_request_error_ex
smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1] status[NT_STATUS_LOGON_FAILURE] || at ../source3/smbd/smb2_sesssetup.c:136
Any idea where to look for answer for this?
