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>

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" )

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>