I've been having this issue with my configuration for ages, and I've
just been working around the problem rather than fixing it.
I have a CentOS 6.8 server running sssd 1.13.3 and Samba 3.6.23.
The server is joined to an AD domain, I've tried using both adcli and
"net ads", it doesn't seem to matter which one I use.
Initially both normal authentication and access to the server via
Samba works with AD users, but after a certain period of time (it
seems to be in the region of a month or two), Samba access to the
server stops working.
Running smbclient on the server shows the problem as well as normal
access from a Windows workstation, and smbclient says:
$ smbclient //myserver/johnb
Enter johnb's password:
session setup failed: NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE
My workaround has been to rejoin the server to the domain, which
clears the issue.
Any idea what could be causing this?
Obfuscated config files:
workgroup = AD
password server = dc1.example.com dc2.example.com *
realm = EXAMPLE.COM
security = ads
client signing = yes
client use spnego = yes
kerberos method = secrets and keytab
idmap config * : backend = tdb
idmap config * : range = 10000 - 19999
config_file_version = 2
services = nss, pam, sudo
domains = AD
# Base configuration
cache_credentials = True
#debug_level = 9
#debug_level = 0x97e0
#debug_level = 0xfff0
debug_level = 4
dyndns_update = false
id_provider = ad
auth_provider = ad
access_provider = ad
chpass_provider = ad
refresh_expired_interval = 4050
# AD specific options
ad_enable_dns_sites = true
ad_server = _srv_,dc1.example.com,dc2.example.com
ad_backup_server = example.com
ad_domain = example.com
# ID mapping
ldap_id_mapping = false
ldap_sudo_search_base = ou=sudoers,dc=example,dc=com
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