eXo Platform 3.0

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## Chapter 21. Configuring JBoss AS with eXo JCR in cluster

## Launching Cluster

### Deploying eXo JCR to JBoss As

To deploy eXo JCR to JBoss, do the following steps:

1. Dowload the latest version of eXo JCR ear distribution.

2. Copy <jcr.ear> into <%jboss_home%/server/default/deploy>

3. Put exo-configuration.xml to the root <%jboss_home%/exo-configuration.xml>

4. Configure JAAS by inserting XML fragment shown below into <%jboss_home%/server/default/conf/login-config.xml>

       <application-policy name="exo-domain">
          <authentication>
             <login-module code="org.exoplatform.services.security.j2ee.JbossLoginModule" flag="required"></login-module>
          </authentication>
       </application-policy>

5. Ensure that you use JBossTS Transaction Service and JBossCache Transaction Manager. Your exo-configuration.xml must contain such parts:

       <component>
          <key>org.jboss.cache.transaction.TransactionManagerLookup</key>
          <type>org.jboss.cache.GenericTransactionManagerLookup</type>^
       </component>

       <component>
          <key>org.exoplatform.services.transaction.TransactionService</key>
          <type>org.exoplatform.services.transaction.jbosscache.JBossTransactionsService</type>
          <init-params>
             <value-param>
                <name>timeout</name>
                <value>300</value>
             </value-param>
          </init-params>
       </component>

6. Start server:

   - bin/run.sh for Unix

   - bin/run.bat for Windows

7. Try accessing `http://localhostu:8080/browser` with root/exo as login/password if you have done everything right, you'll get access to repository browser.

### Configuring JCR to use external configuration

- To manually configure repository create a new configuration file (f.e. exo-jcr-configuration.xml). For details, see JCR Configuration. Your configuration must look like:

      <repository-service default-repository="repository1">
         <repositories>
            <repository name="repository1" system-workspace="ws1" default-workspace="ws1">
               <security-domain>exo-domain</security-domain>
               <access-control>optional</access-control>
               <authentication-policy>org.exoplatform.services.jcr.impl.core.access.JAASAuthenticator</authentication-policy>
               <workspaces>
                  <workspace name="ws1">
                     <container class="org.exoplatform.services.jcr.impl.storage.jdbc.optimisation.CQJDBCWorkspaceDataContainer">
                        <properties>
                           <property name="source-name" value="jdbcjcr" />
                           <property name="dialect" value="oracle" />
                           <property name="multi-db" value="false" />
                           <property name="update-storage" value="false" />
                           <property name="max-buffer-size" value="200k" />
                           <property name="swap-directory" value="../temp/swap/production" />
                        </properties>
                        <value-storages>
                           see "Value storage configuration" part.
                        </value-storages>
                     </container>
                     <initializer class="org.exoplatform.services.jcr.impl.core.ScratchWorkspaceInitializer">
                        <properties>
                           <property name="root-nodetype" value="nt:unstructured" />
                        </properties>
                     </initializer>
                     <cache enabled="true" class="org.exoplatform.services.jcr.impl.dataflow.persistent.jbosscache.JBossCacheWorkspaceStorageCache">
                           see  "Cache configuration" part.
                     </cache>
                     <query-handler class="org.exoplatform.services.jcr.impl.core.query.lucene.SearchIndex">
                        see  "Indexer configuration" part.
                     </query-handler>
                     <lock-manager class="org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl">
                        see  "Lock Manager configuration" part.
                     </lock-manager>
                  </workspace>
                  <workspace name="ws2">
                              ...
                  </workspace>
                  <workspace name="wsN">
                              ...
                  </workspace>
               </workspaces>
            </repository>
         </repositories>
      </repository-service>

- and update RepositoryServiceConfiguration configuration in exo-configuration.xml to use this file:

      <component>
         <key>org.exoplatform.services.jcr.config.RepositoryServiceConfiguration</key>
         <type>org.exoplatform.services.jcr.impl.config.RepositoryServiceConfigurationImpl</type>
         <init-params>
            <value-param>
               <name>conf-path</name>
               <description>JCR configuration file</description>
               <value>exo-jcr-configuration.xml</value>
            </value-param>
         </init-params>
      </component>

## Requirements

### Enviorenment requirements

- Every node of cluster MUST have the same mounted Network File System with read and write permissions on it.

  "/mnt/tornado" - path to the mounted Network File System (all cluster nodes must use the same NFS)

- Every node of cluster MUST use the same database

- Same Clusters on different nodes MUST have the same cluster names (f.e if Indexer cluster in workspace production on the first node has name "production_indexer_cluster", then indexer clusters in workspace production on all other nodes MUST have the same name "production_indexer_cluster" )

### Enviorenment requirements

Configuration of every workspace in repository must contains of such parts:

- Value Storage configuration:

      <value-storages>
         <value-storage id="system" class="org.exoplatform.services.jcr.impl.storage.value.fs.TreeFileValueStorage">
            <properties>
               <property name="path" value="/mnt/tornado/temp/values/production" />    <!--path within NFS where ValueStorage will hold it's data-->
            </properties>
            <filters>
               <filter property-type="Binary" />
            </filters>
         </value-storage>
      </value-storages>

- Cache configuration:

      <cache enabled="true" class="org.exoplatform.services.jcr.impl.dataflow.persistent.jbosscache.JBossCacheWorkspaceStorageCache">
         <properties>
            <property name="jbosscache-configuration" value="jar:/conf/portal/test-jbosscache-data.xml" />     <!--    path to JBoss Cache configuration for data storage -->
            <property name="jgroups-configuration" value="jar:/conf/portal/udp-mux.xml" />                     <!--    path to JGroups configuration -->
            <property name="jbosscache-cluster-name" value="JCR_Cluster_cache_production" />                   <!--    JBoss Cache data storage cluster name -->
            <property name="jgroups-multiplexer-stack" value="true" />
         </properties>
      </cache>

- Indexer configuration:

      <query-handler class="org.exoplatform.services.jcr.impl.core.query.lucene.SearchIndex">
         <properties>
            <property name="changesfilter-class" value="org.exoplatform.services.jcr.impl.core.query.jbosscache.JBossCacheIndexChangesFilter" />
            <property name="index-dir" value="/mnt/tornado/temp/jcrlucenedb/production" />                       <!--    path within NFS where ValueStorage will hold it's data -->
            <property name="jbosscache-configuration" value="jar:/conf/portal/test-jbosscache-indexer.xml" />    <!--    path to JBoss Cache configuration for indexer -->
            <property name="jgroups-configuration" value="jar:/conf/portal/udp-mux.xml" />                       <!--    path to JGroups configuration -->
            <property name="jbosscache-cluster-name" value="JCR_Cluster_indexer_production" />                   <!--    JBoss Cache indexer cluster name -->
            <property name="jgroups-multiplexer-stack" value="true" />
         </properties>
      </query-handler>

- Lock Manager configuration:

      <lock-manager class="org.exoplatform.services.jcr.impl.core.lock.jbosscache.CacheableLockManagerImpl">
         <properties>
            <property name="time-out" value="15m" />
            <property name="jbosscache-configuration" value="jar:/conf/portal/test-jbosscache-lock.xml" />       <!--    path to JBoss Cache configuration for lock manager -->
            <property name="jgroups-configuration" value="jar:/conf/portal/udp-mux.xml" />                       <!--    path to JGroups configuration -->
            <property name="jgroups-multiplexer-stack" value="true" />
            <property name="jbosscache-cluster-name" value="JCR_Cluster_lock_production" />                      <!--    JBoss Cache locks cluster name -->

            <property name="jbosscache-cl-cache.jdbc.table.name" value="jcrlocks_production"/>                   <!--    the name of the DB table where lock's data will be stored -->
            <property name="jbosscache-cl-cache.jdbc.table.create" value="true"/>
            <property name="jbosscache-cl-cache.jdbc.table.drop" value="false"/>
            <property name="jbosscache-cl-cache.jdbc.table.primarykey" value="jcrlocks_production_pk"/>
            <property name="jbosscache-cl-cache.jdbc.fqn.column" value="fqn"/>
            <property name="jbosscache-cl-cache.jdbc.node.column" value="node"/>
            <property name="jbosscache-cl-cache.jdbc.parent.column" value="parent"/>
            <property name="jbosscache-cl-cache.jdbc.datasource" value="jdbcjcr"/>
         </properties>
      </lock-manager>

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