I have a few RHEL7 boxes, all of them are members in MS Win domain using SSSD. All of these linuxes run Samba for file sharing with the same config. Usually it works nice, but from time to time users cannot map Samba folders, with the following message in the log:
[2017/03/07 14:58:27.050493, 0] ../source3/auth/auth_domain.c:121(connect_to_domain_password_server) connect_to_domain_password_server: unable to open the domain client session to machine DC03.example.LOCAL. Error was : NT_STATUS_ACCESS_DENIED. [2017/03/07 14:58:27.050756, 0] ../source3/auth/auth_domain.c:184(domain_client_validate) domain_client_validate: Domain password server not available.
"From time to time" - i.e., sometimes certain Samba box is broken for a long time, sometime some box is stopping to work for some time.
Unfortunately, I cannot blame MS Win admins because in the same time some Samba boxes are OK when others are broken. Any ideas?
My Samba is samba-4.4.4-12.el7_3.x86_64, config is
security = ADS passdb backend = tdbsam realm = EXAMPLE.LOCAL password server = x.x.x.x y.y.y.y