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| <div class="section"> |
| <h2><a name="Description"></a>Description</h2> |
| |
| <p> |
| OpenMeetings 2.1 or later is required to use clustering. One database is used for all OpenMeetings |
| servers, so all database tables are shared across OM instances. Certain folders should be shared |
| between all servers to allow access to the files/recording.</p> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Configuration"></a>Configuration</h2> |
| |
| <ul> |
| |
| <li> |
| Multiple OM servers should be set up as described in |
| <a href="installation.html" target="_blank"> |
| <b>Installation</b> |
| </a> |
| </li> |
| |
| <li>All servers should be configured to have same Time zone (To avoid |
| Schedulers to drop user sessions as outdated) |
| </li> |
| |
| <li>All servers should be configured to use the same DB</li> |
| |
| <li>Servers should be added in Administration -> Servers section</li> |
| </ul> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Database"></a>Database</h2> |
| |
| <p>All servers should be configured to use the same database. It can be on the server or on the one node |
| of the cluster.</p> |
| |
| <ul> |
| |
| <li>Add users who can connect to the database remotely</li> |
| |
| <li>Update <tt>/opt/red5/webapps/openmeetings/WEB-INF/classes/META-INF/persistence.xml</tt> |
| set correct server address, login and password. Also add the following section: |
| |
| <div class="source"><pre class="prettyprint"><property name="openjpa.RemoteCommitProvider" value="tcp(Addresses=10.1.1.1;10.1.1.2)" /></pre></div> |
| Instead of the 10.1.1.1 and 10.1.1.2 set semicolon separated IPs of all nodes of the cluster. |
| </li> |
| </ul> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="File_systems"></a>File systems</h2> |
| |
| <p>If files and recordings using the same physical folders the files and recordings will be available for |
| each node. You can do this using Samba or NFS, for example. For using NFS do the following:</p> |
| |
| <ul> |
| |
| <li>Install NFS to the data server. In the file <tt>/etc/exports</tt> add the following lines: |
| |
| <div class="source"><pre class="prettyprint"> |
| /opt/red5/webapps/openmeetings/upload 10.1.1.2(rw,sync,no_subtree_check,no_root_squash) |
| /opt/red5/webapps/openmeetings/streams 10.1.1.2(rw,sync,no_subtree_check,no_root_squash) |
| </pre></div> |
| Here 10.1.1.2 - is node ip for NFS remote access. Add these lines for all nodes except node with |
| folders. |
| </li> |
| |
| <li> |
| Install NFS common tools to other nodes. In the file <tt>/etc/fstab</tt> do the following: |
| |
| <div class="source"><pre class="prettyprint"> |
| 10.1.1.1:/opt/red5/webapps/openmeetings/upload/ |
| /opt/red5/webapps/openmeetings/upload nfs timeo=50,hard,intr |
| 10.1.1.1:/opt/red5/webapps/openmeetings/streams/ |
| /opt/red5/webapps/openmeetings/streams nfs timeo=50,hard,intr |
| </pre></div> |
| Here 10.1.1.1 – data server ip. And run the command: |
| |
| <div class="source"><pre class="prettyprint">mount -a</pre></div> |
| </li> |
| </ul> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="OM_nodes_configuration"></a>OM nodes configuration</h2> |
| |
| <p>In the file <tt>/opt/red5/webapps/openmeetings/WEB-INF/classes/openmeetings-applicationContext.xml</tt>:</p> |
| |
| <ul> |
| |
| <li> |
| For each node uncomment line: |
| |
| <div class="source"><pre class="prettyprint"> |
| |
| <!-- Need to be uncommented and set to the real ID if in cluster mode--> |
| <property name="serverId" value="1" /> |
| |
| </pre></div> |
| and input the unique value for each node. |
| </li> |
| |
| <li> |
| Replace <tt><ref bean="openmeetings.HashMapStore" /> <!-- Memory based session cache by default --></tt><br /> |
| with <tt><ref bean="openmeetings.DatabaseStore" /></tt> |
| (Currently commented out with following comment: <tt>"The following section should be used in clustering mode"</tt>) |
| </li> |
| </ul> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Configuring_cluster_in_Administration"></a>Configuring cluster in Administration</h2> |
| |
| <p>Run red5 on each node. Login to the system as admin.</p> |
| |
| <ul> |
| |
| <li>Go to the <tt>Administration -> Users</tt> and create Webservice user (only access via SOAP).</li> |
| |
| <li> |
| Go to the <tt>Administration -> Servers</tt> and add all cluster nodes with the following settings: |
| |
| <div class="source"><pre class="prettyprint"> |
| Server Name = node name; |
| Active = check the checkbox. If the checkbox is checked it means node is active and you can use this node; |
| Server Address = node ip; |
| HTTP Port = 5080 - port for http part of Openmeetings; |
| User (SOAP Access) = login of Webservice user from the previous step; |
| Password = password of Webservise user; |
| Webapp path = openmeetings - path where OM installed on this node, it would be better if this path will be the same for all nodes; |
| Protocol = http. |
| </pre></div> |
| </li> |
| </ul> |
| <img src="images/cluster1.png" alt="" width="650" height="461" /> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Ensure_everything_works_as_expected"></a>Ensure everything works as expected</h2> |
| |
| <ul> |
| |
| <li>Set up the cluster and loggin with two users, go to the same room (also check before room |
| entering that the status page with the room list shows the correct number of participants before |
| entering the room). You should login to the same server initially, the server will redirect you |
| for the conference room to the appropriate server automatically. Both users should be in the same room. |
| </li> |
| |
| <li>Do the same with only two users but go to _different_ rooms. The calculation should send |
| both users to different servers, cause based on the calculation two different rooms on a cluster |
| with two nodes should go exactly one room for each node. You can now loggin really to node1 |
| and node2 of your cluster while those users are loggedin and go to <tt>Administration > Connections</tt> |
| and check in the column "servers" where they are located. They should be on different server. |
| </li> |
| </ul> |
| <img src="images/cluster2.png" alt="" width="650" height="369" /> |
| </div> |
| |
| |
| </div> |
| </div> |
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