mod_cluster 1.2.0.Final + AS 7.0.2 Final -problem ?

[giangdt]

Hi,

I have a problem with work with mod_cluster.

My configurations:

Machine Box 1 (jboss1.local):

- 1x AS 7.0.2 Final (Started in standalone-ha mode.)

Machine Box 2 (jboss2.local):

- Apache modcluster 1.2.0.Final

- 1x AS 7.0.2 Final (Started in standalone-ha mode.)

Both of the machine run on Centos 6.2

Apache modcluster can detect both severs. However, the AS on the other server (jboss1.local) does not work (Status: NOTOK). Only the one on the same box with Apache works. The mod_cluster_manager page shows as below:

mod_cluster/1.2.0.Final

start of "httpd.conf" configuration

mod_proxy_cluster.c: OK

mod_sharedmem.c: OK

Protocol supported: http AJP https

mod_advertise.c: OK

Server: apache.local

Server: apache.local VirtualHost: apache.local:6666 Advertising on Group 224.0.1.105 Port 23364 for http://192.168.0.208:6666 every 5 seconds

end of "httpd.conf" configuration

Auto Refresh show DUMP output show INFO output

Node e92530a8-96b3-3a64-ae6a-c99a0d494d54 (http://jboss2.local:8080):

Enable Contexts Disable Contexts

Balancer: mycluster,LBGroup: ,Flushpackets: Off,Flushwait: 10000,Ping: 10000000,Smax: 26,Ttl: 60000000,Status: OK,Elected: 0,Read: 0,Transferred: 0,Connected: 0,Load: 1

Virtual Host 1:

Contexts:

/, Status: ENABLED Request: 0 Disable 

Aliases:

localhost example.com default-host 

Node bf200fb3-2f50-3d4a-ac7b-6039e17bf55f (http://jboss1.local:8080):

Enable Contexts Disable Contexts

Balancer: mycluster,LBGroup: ,Flushpackets: Off,Flushwait: 10000,Ping: 10000000,Smax: 26,Ttl: 60000000,Status: NOTOK,Elected: 0,Read: 0,Transferred: 0,Connected: 0,Load: -1

Virtual Host 1:

Contexts:

/, Status: ENABLED Request: 0 Disable 

Aliases:

example.com localhost default-host 

AS on the jboss1.local shows this error message:

14:40:14,351 ERROR [org.jboss.modcluster.mcmp.impl.DefaultMCMPHandler] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Error [MEM: MEM: Can't read node: {4}] sending command STATUS to proxy apache.local/192.168.0.208:6666, configuration will be reset

What could be the reason? Please help.

Note that box 1 and box 2 are two virtual machines running on Virtualbox.

Thanks,

Giang.

[jfclere]

whait is the error in error_log in httpd?

[giangdt]

Sorry, it is my fault. I provided the wrong IP. Anyway, thanks for your support.

By the way, i did give it a try with jBoss 7.1.1 with the same configuration (Mod Cluster 1.2.0.Final). Load balancing does not work. It always shows the page with the content "It works". I know this is the index.html. It seems that it does not forward/redirect the request to jBoss. Any idea?

Regards,

Giang.

[jfclere]

Without any log or conf files it is hard to find what is wrong :-( the guess is that the connector used by modcluster in AS 7.1.x is different than the one in AS 7.0.x.

[giangdt]

Jean-Frederic,

Connector? Do you mean AJP, HTTP, HTTPS, ...? I chekced from jBoss side, they provide HTTP and HTTPS connectors.

Below are the confurations of them.

Mod Cluster:

<IfModule manager_module>

  Listen apache.local:6666

  ManagerBalancerName mycluster

  <VirtualHost apache.local:6666>

    <Location />

     Order deny,allow

     #Deny from all

     Allow from all

    </Location>

    KeepAliveTimeout 300

    MaxKeepAliveRequests 0

    #ServerAdvertise on http://@IP@:6666

    AdvertiseFrequency 5

    #AdvertiseSecurityKey secret

    #AdvertiseGroup @ADVIP@:23364

    EnableMCPMReceive

    AllowDisplay on

    <Location /mod_cluster_manager>

       SetHandler mod_cluster-manager

       Order deny,allow

       #Deny from all

       Allow from all

    </Location>

  </VirtualHost>

</IfModule>

jBoss 7.1.1

.......

<mod-cluster-config advertise-socket="modcluster" proxy-list="apache.local:6666">

....

...

<connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http"/>

....

When checking mod cluster status, it shows:

mod_cluster/1.2.0.Final

start of "httpd.conf" configuration

mod_proxy_cluster.c: OK

mod_sharedmem.c: OK

Protocol supported: http AJP https

mod_advertise.c: OK

Server: jboss3.local

Server: jboss3.local VirtualHost: apache.local:6666 Advertising on Group 224.0.1.105 Port 23364 for http://192.168.1.207:6666 every 5 seconds

end of "httpd.conf" configuration

Auto Refresh show DUMP output show INFO output

Node node1 (http://jboss1.local:8180):

Enable Contexts Disable Contexts

Balancer: mycluster,LBGroup: ,Flushpackets: Off,Flushwait: 10000,Ping: 10000000,Smax: 26,Ttl: 60000000,Status: OK,Elected: 0,Read: 0,Transferred: 0,Connected: 0,Load: 100

I think everything works fine. However, when going to http://apache.local, it shows:

It works!

But does not open the ROOT application from jBoss. Pls note that, the jBoss 7.0.2 works fine with the same configuration.

Thanks,

Giang.

[jfclere]

it is the excluded-contexts element the default value is ROOT, admin-console, invoker, bossws, jmx-console, juddi, web-console (See http://docs.jboss.org/mod_cluster/1.2.0/html/java.properties.html#mcmp)