[Samba] dreplsrv memory

MORILLO Jordi j.morillo at educationetformation.fr
Thu Apr 30 10:22:31 UTC 2020

Hi Rowland,

One of my DC is offline because Adsl is down and I can't physicaly reboot modem (Covid confinement) :-/
Here is my headbridge DC config:

        workgroup = PR
        realm = pr.educationetformation.fr
        netbios name = DC000
        server role = active directory domain controller

        bind interfaces only = yes
        interfaces = lo eth0

        printcap name = /dev/null
        load printers = no

        dns forwarder =

        # Needed for FreeRadius PEAP MSCHAP
        ntlm auth = mschapv2-and-ntlmv2-only

        path = /var/lib/samba/sysvol/pr.educationetformation.fr/scripts
        read only = No

        path = /var/lib/samba/sysvol
        read only = No

"samba-tool drs showrepl" is fine everywhere (except my offline DC).
No error at samba-tool dbcheck --cross-ncs --fix --yes

-----Message d'origine-----
De : samba <samba-bounces at lists.samba.org> De la part de Rowland penny via samba
Envoyé : jeudi 30 avril 2020 11:47
À : samba at lists.samba.org
Objet : Re: [Samba] dreplsrv memory

On 30/04/2020 09:03, MORILLO Jordi via samba wrote:
> Hi !
> Since few months, dreplsrv is eating lots of memory in few days. Within 2 weeks, the process is generaly OOM killed and replication become weired. I need to restart samba-ad-dc.
> Here is my config :
> -          Samba 4.11.6 / 4 vcpu / 2Go  Ram
> -          10215 objects (ldbs file = 300MB)
> This memory problem only happen on my headbridge DC (star topolgy with 
> 20 DC) If I add some ram, the problem occures later but is the same 
> (dreplsrv is eating more memory and swap)
> Since few week, one of my DC is offline and this memory problem get worse. I need to restart samba service every week.
> Exemple :

If one of the DC's has been offline for sometime, have you demoted it ?

Can you post the smb.conf from the affected DC.


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