> Date: Thu, 3 Sep 2009 13:30:30 -0600
> From: rmeggins@redhat.com
> To: fedora-directory-users@redhat.com
> Subject: Re: [389-users] How to restore replica admin in the master


> If those docs need to be corrected, please send us the links.  Also note 
> that in 8.0:
> If you want to add new schema to an existing instance, you must add the
> files to /etc/dirsrv/slapd-instancename/schema, then restart the server
> for the schema changes to take effect
> /etc/dirsrv/schema is only for new instances only - existing servers
> don't use these files
> schema files are not replicated - the only way to replicate schema is to
> add the new schema over LDAP

I read docs from here:

http://www.redhat.com/docs/manuals/dir-server/

About schemas, I read here:
http://www.redhat.com/docs/manuals/dir-server/cli/8.0/Configuration_Command_File_Reference-Core_Server_Configuration_Reference.html#Configuration_Command_File_Reference-Server_Configuration___Overview-LDIF_Configuration_Files___Location

And here:
http://www.redhat.com/docs/manuals/dir-server/ag/8.0/Extending_the_Directory_Schema.html



I just can't find the description you just put here ?  It must be hidden in some obscure area... or I need eyeglasses.



> With 8.1 you have the ability to add schema files, then have the server
> reload them without having to restart the server, but the schema files
> added by copying them to the server instance schema directory will still
> not be replicated.


Yep exactly.


> >
> > Later, when I added a new bunch of users, I noticed that the
> > replication was stopped between two masters, but not between master
> > and slaves. I tried to understand why it doesn't work anymore
> Anything in the errors or access logs?

Yep, it happens each time I add a new schema on a replicated system.  Here are the logs:


Master A:

[02/Sep/2009:10:15:17 -0400] NSMMReplicationPlugin - agmt="cn=INSTANCE_prod" (SERVER:389): Unable to acquire replica: there is no replicated area "dc=name,dc=domain,dc=net" on the consumer server. Replication is aborting.
[02/Sep/2009:10:15:17 -0400] NSMMReplicationPlugin - agmt="cn=INSTANCE_prod" (SERVER:389): Incremental update failed and requires administrator action
[02/Sep/2009:11:44:09 -0400] NSMMReplicationPlugin - agmt="cn=INSTANCE_netscaperoot" (SERVER:389): Unable to acquire replica: there is no replicated area "o=netscaperoot" on the consumer server. Replication is aborting.
[02/Sep/2009:11:44:09 -0400] NSMMReplicationPlugin - agmt="cn=INSTANCE_netscaperoot" (SERVER:389): Incremental update failed and requires administrator action


Master B:

[02/Sep/2009:11:15:18 -0400] NSMMReplicationPlugin - conn=73 op=3 replica="unknown": Unable to acquire replica: error: no such replica
[02/Sep/2009:11:44:10 -0400] NSMMReplicationPlugin - conn=3572 op=3 replica="unknown": Unable to acquire replica: error: no such replica

Take note that it happens only when I add a new schema and I restart the server.  When I restart without adding a new schema, I don't have that kind of error, it just works. 

What I did is I copy the schema in /etc/dirsrv/slapd-XXXX/schema and then I restart the server. 

However, in the lab, at the installation, I initially copied the schema (before the the start of the replication) and started both servers and it works flawlessly.


> > and I found out by reading in 8.1 (the next version that we don't use
> > it yet) documentation that it says that we need to stop all
> > replication before adding a new schema file.
> Can you provide a link to the documentation?

There you go:
http://www.redhat.com/docs/manuals/dir-server/8.1/admin/dynamically-reloading-schema.html#reloading-schema-with-replication


> I'm not really sure what's going on here. I seriously doubt there is
> any data corruption happening (unless there is some disk/hardware
> failure). I would first suggest you check your errors log in
> /var/log/dirsrv/slapd-instancename/errors


Maybe ? I find it very weird too but the fact is: I'm able to reproduce the issue in the lab.  More than one.  I already verified the logs and I also enabled the verbose mode by doing this:

dn: cn=config
changetype: modify
replace: nsslapd-errorlog-level
nsslapd-errorlog-level: 8192

Thanks!




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