topic Re: NFS Authentication NullPointerException in Alfresco Archive

NFS Authentication NullPointerException

jmharris — Fri, 20 Nov 2009 13:24:02 GMT

Using Alfresco 3.2r (Tomcat bundle). Setting up NFS mount as per instructions.Config is: <bean id="nfsServerConfig" class="org.alfresco.filesys.config.NFSConfigBean"> <property name="serverEnabled"> <value>${nfs.enabled}<

Re: NFS Authentication NullPointerException

mrogers — Fri, 20 Nov 2009 13:29:12 GMT

That does not look like 3.2 configuration.

What file is your "nfsServerConfig" bean from?

Re: NFS Authentication NullPointerException

jmharris — Fri, 20 Nov 2009 14:04:51 GMT

Hi, thanks for the response.

I have used the self extracting bundle 'Alfresco-Community-3.2r-Linux-x86-Install'.

Those settings are from the file: ~/Alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/subsystems/fileServers/default/file-servers-context.xml

I added these lines:

      <property name="NFSServerPort"><value>12049</value></property>           
      <property name="mountServerPort"><value>1678</value></property>           

      <property name="debugFlags"><value>RxData,Search,Info,File,FileIO,Error,Directory,Timing,Session</value></property>
      <property name="portMapperDebug"><value>true</value></property>                                                   
      <property name="mountServerDebug"><value>true</value></property>‍‍‍‍‍‍

And of course I had to switche on nfs.enabled in: ~/Alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/subsystems/fileServers/default/file-servers.properties

Re: NFS Authentication NullPointerException

jmharris — Fri, 20 Nov 2009 16:03:58 GMT

Is it worth me filing this as a bug report? Even if it's a configuration issue something should probably be done about the fact I could not know what was going on without turning on the logger output.

Re: NFS Authentication NullPointerException

mrogers — Fri, 20 Nov 2009 18:05:19 GMT

There's clearly at least one logging required if an exception is being silently swallowed.

However its never valid to change the files in the WEB-INF folder. And your "enable.nfs" property should be in your alfresco-global.properties.
Whether that's the cause of your problem I don't know :?

Re: NFS Authentication NullPointerException

jmharris — Fri, 20 Nov 2009 19:21:41 GMT

I appreciate that settings can be changed elsewhere than WEB-INF but out of the box the only files that contain the nfs.enabled setting are:

So some more guidance/examples are required if something else is meant to be done.

Given that the changes I have made only turn the NFS server on and set its port and I am clearly connecting to it using the mount line, I doubt the way in which the settings have been made is causing a problem.

Of course the problem is I cannot know for sure since NFS is disabled by default in 3.2r and the docs do not show a complete working example (or I've missed it)- has anyone had this working in 3.2r? Presumably there is some acceptance testing prior to release so I can't imagine that this is just broken, but the NullP looks pretty suspect given such a simple configuration.

Re: NFS Authentication NullPointerException

dward — Mon, 23 Nov 2009 10:42:40 GMT

some more guidance/examples are required if something else is meant to be done

See http://wiki.alfresco.com/wiki/File_Server_Subsystem#Configuration_3

Please log this in JIRA if it reproduces using spring overrides as described in the above section.

Re: NFS Authentication NullPointerException

jmharris — Fri, 27 Nov 2009 13:15:16 GMT

Thanks for the reply, I've done as asked but I don't think that makes much difference to what I'm experiencing. I'll file this as a bug as well, but for the record here is the current situation:

Fresh install, now using Alfresco-Community-3.2r2-Linux-x86-Install.

Settings in ~/Alfresco/tomcat/shared/classes/alfresco-global.properties

nfs.enabled=true
nfs.user.mappings=admin
nfs.user.mappings.value.admin.uid=0
nfs.user.mappings.value.admin.gid=0‍‍‍‍

Am I right in saying those are ignored once I configure a spring bean extension? It seems so anyway, so-

Settings in ~/Alfresco/tomcat/shared/classes/alfresco/extension/subsystems/fileServers/default/default/custom-file-servers-context.xml

Note I've tried to keep this to the bare minimum needed to start NFS file server only.

<?xml version="1.0" encoding="UTF-8"?>                                                                                                                             
<!DOCTYPE beans PUBLIC "-//SPRING/DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">                                                             
<beans>                                                                                                                                                            

       <bean id="fileServerConfiguration" class="org.alfresco.filesys.config.ServerConfigurationBean" parent="fileServerConfigurationBase">
          <property name="nfsConfigBean">                                                                                                  
             <ref bean="nfsServerConfig" />                                                                                                
          </property>                                                                                                                      
          <property name="filesystemContexts">                                                                                             
             <ref bean="filesystemContexts" />                                                                                             
          </property>                                                                                                                      
          <property name="securityConfigBean">                                                                                             
             <ref bean="fileSecurityConfig" />                                                                                             
          </property>                                                                                                                      
       </bean>                                                                                                                             

       <!– NFS Server –>

       <bean id="nfsServer" class="org.alfresco.filesys.NFSServerBean" destroy-method="stopServer">
          <constructor-arg>                                                                        
             <ref local="fileServerConfiguration" />                                               
          </constructor-arg>                                                                       
       </bean>                                                                                     

      <!–The configurable RPC user mappings - actually a post-processed composite property! –>
       <bean id="nfs.user.mappings" class="org.springframework.beans.factory.config.ListFactoryBean">
          <property name="sourceList">                                                               
             <list>                                                                                  
                <bean class="org.alfresco.filesys.auth.nfs.UserMapping">                             
                   <property name="beanName">                                                        
                      <value>admin</value>                                                           
                   </property>                                                                       
                   <property name="uid">                                                             
                      <value>0</value>                                                               
                   </property>                                                                       
                   <property name="gid">                                                             
                      <value>0</value>                                                               
                   </property>                                                                       
                </bean>                                                                              
             </list>                                                                                 
          </property>                                                                                
       </bean>                                                                                       

  <bean id="nfsServerConfig" class="org.alfresco.filesys.config.NFSConfigBean">
                                                                               
      <property name="serverEnabled"><value>true</value></property>            

      <property name="NFSServerPort"><value>51000</value></property>                

      <property name="debugFlags"><value>RxData,Search,Info,File,FileIO,Error,Directory,Timing,Session</value></property>
      <property name="portMapperDebug"><value>true</value></property>
      <property name="mountServerDebug"><value>true</value></property>

          <!– Map NFS user/group ids to Alfresco users –>
          <property name="rpcAuthenticator">
             <bean class="org.alfresco.filesys.auth.nfs.AlfrescoRpcAuthenticator">
                <property name="userMappings">
                   <ref bean="nfs.user.mappings" />
                </property>
             </bean>
          </property>

  </bean>

        <bean id="filesystemContexts" class="org.springframework.beans.factory.config.ListFactoryBean">
          <property name="sourceList">
             <list>
                <!– Alfresco repository access shared filesystem –>
                <bean class="org.alfresco.filesys.repo.ContentContext">
                   <property name="deviceName">
                      <value>alfresco</value>
                   </property>
                   <property name="storeName">
                      <value>${spaces.store}</value>
                   </property>
                   <property name="rootPath">
                      <value>/${spaces.company_home.childname}</value>
                   </property>
                </bean>
             </list>
          </property>
        </bean>


</beans>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Server details:

No errors while starting Alfresco. It's my understanding with this configuration Alfresco should register the NFS server with the native portmap service.

Hence try to mount the share:

mount -v localhost:/alfresco /mnt/alfresco
mount: no type was given - I'll assume nfs because of the colon
mount.nfs: trying 127.0.0.1 prog 100003 vers 3 prot TCP port 51000
mount.nfs: mount to NFS server 'localhost' failed: timed out, retrying
mount.nfs: trying 127.0.0.1 prog 100003 vers 3 prot TCP port 51000

… and so on.‍‍‍‍‍‍‍

So it seems the custom NFS port has been picked up from the portmap service, then something else has gone wrong. The corresponding error log from Alfresco:

13:01:28,593  DEBUG [nfs.protocol.auth] RpcAuth: Type=Null client=/127.0.0.1
13:01:28,595  DEBUG [nfs.protocol.auth] RpcAuth: RPC from T127.0.0.1:60988, authType=Null, sessKey=2130706433
13:01:28,597  DEBUG [nfs.protocol.auth] RpcAuth: Client info, type=Null, addr=127.0.0.1
13:01:28,597  DEBUG [org.alfresco.fileserver] [NFS] Added Null session 2130706433
13:01:28,598  DEBUG [org.alfresco.fileserver] [NFS] Found session org.alfresco.jlan.oncrpc.nfs.NFSSrvSession@1ad9f73
13:01:28,598  DEBUG [org.alfresco.fileserver] [NFS] RPC Authencation Exception: java.lang.NullPointerException‍‍‍‍‍‍

I'm stumped at this point. Several variations of the available config parameters have been tried but it always comes down to this error. Does anyone have a working example of doing this with Alfresco 3.2?

Re: NFS Authentication NullPointerException

jmharris — Fri, 27 Nov 2009 13:30:17 GMT

New issue is https://issues.alfresco.com/jira/browse/ALFCOM-3684

Re: NFS Authentication NullPointerException

dakabali — Mon, 30 Nov 2009 14:40:32 GMT

I confirm the exactly same issue with Alfresco-Community-3.2r on Windows 2003/2008 server with Alfresco's native JLAN NFS Server on the standard port 2049.

New issue is https://issues.alfresco.com/jira/browse/ALFCOM-3684