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<title>Directory Server (LDAP) - Overview of creating a complex replication topology</title>
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<h3 id="rzahycrtcomplex">Overview of creating a complex replication topology</h3>
<p>Use this high level overview as a guide for setting up a complex replication
topology.</p>
<ol type="1">
<li>Start all peer server or replicas-to-be. This is required for
the Web administration tool to gather information from the servers.</li>
<li>Start the 'first' master and configure it as a master for the
context.</li>
<li>Load the data for the subtree to be replicated on the 'first'
master, if the data is not already loaded.</li>
<li>Select the subtree to be replicated.</li>
<li>Add all of the potential peer masters as replicas of the 'first'
master.</li>
<li>Add all of the other replicas.</li>
<li>Move the other peer masters to promote them.</li>
<li>Add replica agreements for the replicas to each of the peer masters.
<a name="wq246"></a>
<div class="notetitle" id="wq246">Note:</div>
<div class="notebody">If the credentials are to be created in <span class="bold">cn=replication,cn=localhost</span>, the credentials must be created on each server after they are restarted.
Replication by the peers fails until the credential objects are created.</div></li>
<li>Add replica agreements for the other masters to each of the peer masters.
The 'first' master already has that information.</li>
<li>Quiesce the replicated subtree. This prevents updates from being made
while copying data to the other servers.</li>
<li>Use Queue management to skip all for each queue.</li>
<li>Export the data for the replicated subtree from the 'first'
master.</li>
<li>Unquiesce the subtree.</li>
<li>Stop the replica servers and import the data for the replicated
subtree on to each replica and peer master. Then restart the servers.</li>
<li>Manage the replication properties on each replica and peer master
to set the credentials to be used by suppliers.</li></ol>
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