Multi-master replication questions for iPlanet 5.0, gurus out there?

hi:
I'm using iPlanet Dir Server 5.0 and I note that many gurus out there has
been able
to get this to work, that's good, but I have yet to. I have several
questions, maybe
someone can spend a few minutes and save me hours...
I have a suffix called dc=calient,dc=net. I followed the suggestions in
the
iPlanet install guide and created 2 directory servers
a) suffix o=NetscapeRoot, at some arbitrary port, 4601
b) suffix dc=calient,dc=net, at the usual port 389.
All my searches/create/delete work fine. However, when I try to replicate
with multi-master between 2 machines, I keep getting into problems.
Here's one set of questions...
Q1: do people out there really split their tree from the o=NetscapeRoot
tree?
Q2: The admin guide says the the unit of replication is a database, and
that each replication can only have 1 suffix. Is this true? Can
a replicated db have more than 1 suffix?
Q3: If I also want to replicate the o=NetscapeRoot tree, I have to set
up yet 2 more replication agreements. Isn't this more work? If
I just lump the 2 suffixes together, wouldn't it be easier? But would
it work?
Q4: I followed the instructions to enable replicas on the masters.
But then I tried to create this cn=Replication Manager, cn=config
object.
But what is the object class of this entry? An iPlanet user has uid
as its RDN... I tried a person object class, and I added a password.
But then I keep getting error code 32, object not found in the error
log. What gives? such as
WARNING: 'get_entry' can't find entry 'cn=replication
manager,cn=config', err 32
Q5: Also, are there any access control issues with this cn=Replication
Manager,
cn=config object? By this I mean, I cannot seem to see this object
using
ldapsearch, I can only see cn=SNMP, cn=config. Also, do I have
to give all access via aci to my suffix dc=calient,dc=net? Also,
given the fact that my o=NetscapeRoot tree is at a different port (say
4601),
not 389, could this be an issue?
Q6: when replication fails, should the Dir Server still come up? Mine does
not anymore
which is strange. I keep getting things like this in my log file
[08/Nov/2001:21:49:13 -0800] NSMMReplicationPlugin - Could not send consumer
mufasa.chromisys.com:389 the bind request
[08/Nov/2001:21:49:13 -0800] NSMMReplicationPlugin - Failed to connect to
replication consumer mufasa.chromisys.com:389
But why shouldn't the dir server itself come up even if replication
fails?
steve

Hi Steve,
First, please read the 'Deployment Guide'. I think that is easier to
understand when you want to setup multi-master replication. The
'Administrator's Guide' gives you step-by-step instructions, but it may
not help you to understand how to design your directory services.
Stephen Tsun wrote:
I have a suffix called dc=calient,dc=net. I followed the suggestions in
the
iPlanet install guide and created 2 directory servers
a) suffix o=NetscapeRoot, at some arbitrary port, 4601
b) suffix dc=calient,dc=net, at the usual port 389.
All my searches/create/delete work fine. However, when I try to replicate
with multi-master between 2 machines, I keep getting into problems.I don't understand something: which backend do you want to replicate?
The one holding 'o=NetscapeRoot' or the one holding 'dc=calient,dc=net'?
Do you want to setup replication between these two instances of the
directory server (i.e. between port 4601 and 389 in your example)?
Q1: do people out there really split their tree from the o=NetscapeRoot
tree?If you have multiple directory servers installed in your environment, it
is probably worth dedicating (at least) one directory server for the
o=netscaperoot tree.
Q2: The admin guide says the the unit of replication is a database, and
that each replication can only have 1 suffix. Is this true? Can
a replicated db have more than 1 suffix?Well, it is normal, since in iDS 5.x you have 1 suffix per database.
You can, however, replicate multiple databases.
Q3: If I also want to replicate the o=NetscapeRoot tree, I have to set
up yet 2 more replication agreements. Isn't this more work? If
I just lump the 2 suffixes together, wouldn't it be easier? But would
it work?You can't lump the 2 suffixes together, because each backend has 1
suffix associated with.
Q4: I followed the instructions to enable replicas on the masters.
But then I tried to create this cn=Replication Manager, cn=config
object.
But what is the object class of this entry?Usually, it is organizationalperson or inetorgperson. In most of the
cases you want an objectclass which can have userPassword attribute.
An iPlanet user has uid
as its RDN... I tried a person object class, and I added a password.
But then I keep getting error code 32, object not found in the error
log. What gives? such asYou must have misconfigured something. Or perhaps, it is not
cn=replication manager, cn=config, but 'uid=replication manager,cn=config'
Q5: Also, are there any access control issues with this cn=Replication
Manager,
cn=config object? By this I mean, I cannot seem to see this object
using
ldapsearch, I can only see cn=SNMP, cn=config.The configuration tree is protected by ACIs, so you can not see them
using anonymous BINDs. Try binding as 'directory manager' and you will
find your entry.
Also, do I have
to give all access via aci to my suffix dc=calient,dc=net?For what purpose? For replication, it is enough to set user DN in the
replication agreement and this user can update the replicated backend.
Q6: when replication fails, should the Dir Server still come up?Yes.
Bertold

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I recently set up multi-master replication between two machines, A and B, running iDS 5.1. Everything works well until I disable replication and re-enable replication. Here's the procedure that I follow:
1. Delete agreement on machine A and B.
2. Disable the replica on machine A and B.
3. Disable the changelog on machine A and B.
4. Enable the changelog on machine A and B.
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After I follow this procedure, updates to A result in the error:
<B>
Data required to update replica "cn=rep1, cn=replica, cn="o=sylantro.com", cn=mapping tree, cn=config (host rosemary.sylantro.com, port 389)" has been purged. The replica must be reinitialized.
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</B>
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Hello All,
I've setup a multi-master replication with no consumers. i.e i'm having 2 suppliers which should update each other. The setup seems to be fine since the initialization of one supplier by other works very fine. But i couldn't get the synchronization btwn the suppliers get worked. I noticed in the error log that the syn-scan request arrived, but ignored. What are the possibilities of this error ?
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Hello All,
Rich, you have been a support to most of us in the group(indeed much to my help)...Its splendid work....
My problems disappeared after applying the Service pack ....the service pack in fact is mainly to sort out the replication issues.
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Best Regards,
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dbms_defer_sys.schedule_push(
destination => 'MYDB.WORLD',
interval => 'SYSDATE + 1/(60*24)',
next_date => sysdate,
stop_on_error => FALSE,
delay_seconds => 0,
parallelism => 1);
end;
begin
dbms_defer_sys.schedule_purge(
next_date => sysdate,
interval => 'sysdate + 1/24',
delay_seconds => 0,
rollback_segment => '');
end;
-- Add jobs to MYDB
connect repadmin/repadmin@mydb
begin
dbms_defer_sys.schedule_push(
destination => 'NAVDB.WORLD',
interval => 'SYSDATE + 1/(60*24)',
next_date => sysdate,
stop_on_error => FALSE,
delay_seconds => 0,
parallelism => 1);
end;
begin
dbms_defer_sys.schedule_purge(
next_date => sysdate,
interval => 'sysdate + 1/24',
delay_seconds => 0,
rollback_segment => '');
end;
Then created "Master Group Site" at Site1:
connect repadmin/repadmin@navdb
BEGIN
DBMS_REPCAT.CREATE_MASTER_REPGROUP(
gname => '"GROUP1"',
qualifier => '',
group_comment => '');
END;
Add desired table object for Replication:
BEGIN
DBMS_REPCAT.CREATE_MASTER_REPOBJECT(
gname => '"GROUP1"',
type => 'TABLE',
oname => '"AUTHOR"',
sname => '"PUBS"');
END;
Set Primary Key column:
BEGIN
DBMS_REPCAT.SET_COLUMNS(
sname => '"PUBS"',
oname => '"AUTHOR"',
column_list => '"AUTHOR_KEY"');
END;
Resume Master Activity at Site1:
BEGIN
DBMS_REPCAT.RESUME_MASTER_ACTIVITY(
gname => '"GROUP1"');
END;
Add another Master Site as Site2:
connect repadmin/repadmin@navdb
BEGIN
DBMS_REPCAT.SUSPEND_MASTER_ACTIVITY(
gname => '"GROUP1"');
END;
BEGIN
DBMS_REPCAT.ADD_MASTER_DATABASE(
gname => '"GROUP1"', master => ‘MYDB.WORLD');
END;
BEGIN
DBMS_REPCAT.RESUME_MASTER_ACTIVITY(
gname => '"GROUP1"');
END;
I have executed above steps as shown in attached PDF file. Now I am trying to update one row in "Author" table and it is giving error like:
ORA-23326: object group "PUBLIC"."GROUP1" is quiesced
As per the description given for error in some help file, I am trying to suspend the activity, then it is give me same error like:
SQL> BEGIN
2 DBMS_REPCAT.SUSPEND_MASTER_ACTIVITY(
3 gname => '"GROUP1"');
4 END;
5 /
BEGIN
ERROR at line 1:
ORA-23326: object group "PUBLIC"."GROUP1" is quiesced
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.DBMS_REPCAT_MAS", line 4195
ORA-06512: at "SYS.DBMS_REPCAT", line 946
ORA-06512: at line 2
Here I am stuck up and cannot perform any DML operation on the Replicated object.
Look into the matter and suggest something if anyone can.
Thanks,
Tapan Trivedi

You're probably going to have to rethink this.
Even if your replication agreements are not encrypted, it is likely that your userPassword attributes are hashed. If they're not, you could just ask either master for the cleartext userPassword anyways, and no need to try to sniff it out of replication traffic.

Multi-master replication questions for iPlanet 5.0, gurus out there?

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