Re: memberOf pluging and multimaster replication

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On 10/05/2015 11:42 AM, ghiureai wrote:


Hi Rich, List
after a re- initialization this am of both ldap2 , 4 start seeing the following error , after some research seems this is a know issues (?) Do I need to re-write the replication agreement to avoid this error/warning, the content of DS seems do not work properly for memberOF plugin:

"NSMMReplicationPlugin - multimaster_be_state_change: replica dc=xxx,dc=net t is coming online; enabling replication [05/Oct/2015:10:27:53 -0700] NSMMReplicationPlugin - replica_reload_ruv: Warning: new data for replica dc=xxx, dc-net=xxx does not match the data in the changelog. Recreating the changelog file. This could affect replication with replica's consumers in which case the consumers should be reinitialized......"

This is benign. It just means you had some old data in your changelog that is being wiped out because you are initializing it.



Thank you


On 10/05/2015 08:13 AM, Rich Megginson wrote:
On 10/05/2015 08:57 AM, ghiureai wrote:

Gmorning List and Rich,

I manged some progress Friday with cfg multimaster replication
fractional ( exclude memberOf plugin)  the final goal  is to have 3
ldap 's aka : 1,2 and 4 in mutlimaster fraction rep.
  I had cfg  dlap 2 to 4  as mutimaster , now I would like to bring in
ldap1 in cfg ( this is at present time our only production , all
writes+ read s are going here) ,
we  can not  have ldap1 offline I will like to proceed with cfg the
same steps I did for 2 to 4, but I will ask ldap 2 to be initialized
with most recent data from ldap1 , any issues here I may have to be
aware ?
No.  You can initialize 2 from 1 while 1 is running.

Would ldap4 get updated also when performing the initialization of
ldap2 ?
No.  After 2 is initialized, you can initialize 4 from either 1 or 2.

Thank you
Isabella


have On 10/02/2015 03:48 PM, Rich Megginson wrote:
On 10/02/2015 12:16 PM, ghiureai wrote:
Hi List and Rich,

as per last documentation update I am trying to cfg fractional
replication ( excluding memberOf plunging)  for a multimaster cfg
server 3 ldap server, when starting with first one aftr mentioning
"memberOf " to be excluded in replication agreement , I get a message
like this ""Fractional replication can be done to a read-only suffix
in replica "...is this the case , so no multimaster will work with
fractional replication ? , or any other issue to get with message ?
I am following same procedure as for mutimaster replication except the agreement has fractional replication , is this the correct approach ?
Thank you
Isabella


Isabella

On 10/01/2015 11:49 AM, ghiureai wrote:
Hi  List ,Rich
Here is the URL for the doc mentioned in this email, please can you
confirm if this is the case for multimaster replication and memberOf
plugin , is this the last update doc version ?

https://access.redhat.com/documentation/en-US/Red_Hat_Directory_Server/9.0/html/Administration_Guide/Advanced_Entry_Management.html#groups-cmd-memberof



Thank you
Isabella
     On 10/01/2015 11:20 AM, Rich Megginson wrote:
On 10/01/2015 12:06 PM, ghiureai wrote:
Hi Rich
Unless the issue involves some sort of security problem that
involves a
potential CVE, or contains sensitive data internal to your
organization
that you cannot make public, I would prefer that you use the
389-users@xxxxxxxxxxxxxxxxxxxxxxx for questions such as this. Not
only
will this benefit the entire community, but there are others who can
answer these sorts of questions.


Are you aware of any issues with MemberOf plugin and multimaster
replication, some of old documentation one of the developer
mentioned
to me shows you can use full replication agreement ,
Please provide the URL of the documentation.
https://access.redhat.com/documentation/en-US/Red_Hat_Directory_Server/9.0/html/Administration_Guide/Advanced_Entry_Management.html#groups-cmd-memberof



please see bellow and if you can advise if this is still the case :

"......The memberOf attributes for user entries should not be
replicated in multi-master environments. Make sure that the memberOf attribute is excluded from replication in the replication agreement.
(Fractional replication is described in Section 11.1.7,
“Replicating a
Subset of Attributes with Fractional Replication”.)
Each server must maintain its own MemberOf Plug-in independently. To
make sure that the memberOf attributes for entries are the same
across
servers, simply configure the MemberOf Plug-in the same on all
servers.
With single-master replication, it is perfectly safe to replicate
memberOf attributes. Configure the MemberOf Plug-in for the
supplier,
then replicate the memberOf attributes to the consumers. ....."
Yes, in general it is better to replicate the group operations only,
and
let each directory server update the internal memberof data. This
reduces the amount of replication traffic, and reduces the complexity
and processing in the memberof plugin to know if it needs to
include or
exclude an operation.

Thank you
Isabella



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