[Samba] Two SMB Domain member gateways to CEPHFS

Oskari Koivisto oskari at datalounges.com
Mon Mar 29 18:36:12 UTC 2021


I have 2 ceph clusters served via SMB-gateways to a single domain.
The cluster reside away from each other few thousand kilometers so having 2 separate SMB-servers is a must.
The Samba works kind of, I can access the shares and am able to set permissions to share-tab and security-tab if certain features are enabled. Or I could, now it seems I’m not able to do that anymore.

My hypothesis is that since having 2 samba-gateways both joined to domain and having RID as a backend confuses the actual AD-part.

From both gateways I can query the domain users and groups from getent passwd. But the gateways return different ID-numbers.

This is my current smb.conf:
       workgroup = DOMAIN
       netbios name = HOSTNAME
       clustering = no
       load printers = no
       usershare allow guests = No
       smbd: backgroundqueue = no
       realm = DOMAIN
       security = ADS
       template homedir = /home/%D/%U
       domain logons = No
       domain master = No
       wins support = no
       password server = *
       winbind refresh tickets = yes
       idmap config * : backend = tdb
       idmap config * : range = 3000-7999
       idmap config MICT : backend = rid
       idmap config MICT : range = 10000-20000
       template shell = /bin/bash
       username map = /etc/samba/user.map
       vfs objects = acl_xattr
       map acl inherit = yes
       store dos attributes = yes

I’ve tried to read the samba.org and did the configuration based on ttps://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member.

Could anyone point out what is going on here and why I’m getting this kind of problems.


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