----- Original Message -----
From: "William Brown" <wibrown(a)redhat.com>
To: "General discussion list for the 389 Directory server project."
Sent: Friday, January 22, 2016 4:28:57 AM
Subject: [389-users] Re: multimaster replication -preventing clients writes
On Thu, 2016-01-21 at 22:50 -0200, carne_de_passaro wrote:
> Hi, I don't know if it will perform well but, you can create an ACI
> on the
> top of the tree and negate writes for all, except the master 2 IP.
The aci will replicate because this is MMR.
Yes, but it will be evaluated as false only in master 2.
So, master 2 will allow writes while in master 1, they will be forbidden.
But I agree it could be nicer to have a read only replica.
> > > Hi List,
> > > I would like to know if there is a cfg option in a multimaster
> > > replication
> > > ( 2 servers both accept read-writes) to prevent users/clients
> > > application
> > > writes to one of the master without affecting the replication
> > > agreements.
> > > my env 389-ds 22.214.171.124
> > > Thank you
> > > Isabella
> You are actually asking for a read only replica ... if a rw master
> accepts no writes, it's a read only. If it accepts no writes it has
> nothing to transmit back to the other master .... you want a read only
> Otherwise, if you want rw masters, there is no reason to limit yourself
> to writes only on one master. That's the point of the replication
> protocol, to remove the point of failures in write targets.
> William Brown
> Software Engineer
> Red Hat, Brisbane
> 389 users mailing list