6 Replies Latest reply on Apr 27, 2014 3:11 PM by rbe1733

    How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)

    rbe1733
    rbe1733 Apr 24, 2014 4:52 PM

      Hi,

       

      I'm looking for a way to make virtual servers work in JBoss EAP 6.2.

      My goal is to isolate the deployed applications among multiple virtual hosts in Apache 2.2.

      I read a lot of documentation and went through different forums, but i can't succeed in making mod_cluster work for this configuration.

       

      I'm using domain mode with the following architecture :

      VM1 : Apache + JBoss domain controller (no server group) : 192.168.100.200->202

      VM2 : JBoss domain slave1 (2 server groups cluster1 and cluster2, host cluster11 (.211) in group cluster1, host cluster21 (.212), profile full-ha) : 192.168.100.210->212

      VM3 : JBoss domain slave2 (2 server groups cluster1 and cluster2, host cluster12 (.221) in group cluster1, host cluster22 (.222), profile full-ha)) : 192.168.100.220->222

       

      So, 2 clusters (cluster1 and cluster2) with 2 hosts for each of them.

      The .200, .201 and .202 addresses are reserved for Apache virtual hosts.

       

      What i would want Apache to do :

      .200 : mod_cluster-manager (accessible only through http://xxx-jboss-master.vmdomain.org/mod_cluster-manager)

      .201 : cluster-demo (accessible only through URL http://xxx-jboss-domain1.vmdomain.org/cluster-demo)

      .202 : jboss-helloworld (accessible only through http://xxx-jboss-domain2.vmdomain.org/jboss-helloworld)

       

      I use mod_cluster 1.2.6.

       

      Here is the content of /etc/httpd/conf.d/jboss_cluster.conf

       

      Listen 192.168.100.200:10001

      Listen 192.168.100.201:10001

      Listen 192.168.100.202:10001

       

      CreateBalancers 0

      UseAlias 1

      ProxyPreserveHost On

       

      <VirtualHost 192.168.100.200:10001>

        ServerName xxx-jboss-master.vmdomain.org

        <Directory />

          Order deny,allow

          Allow from all

        </Directory>

       

        <Location /mod_cluster-manager>

         SetHandler mod_cluster-manager

         Order deny,allow

         Allow from all

        </Location>

       

        KeepAliveTimeout 60

        MaxKeepAliveRequests 0

       

        AdvertiseFrequency 5

        EnableMCPMReceive

        ServerAdvertise on

      </VirtualHost>

       

      # domain1

      <VirtualHost 192.168.100.201:10001>

        ServerName xxx-jboss-domain1.vmdomain.org

        <Directory />

          Order deny,allow

          Allow from all

        </Directory>

       

        ErrorLog logs/xxx-jboss-domain1_error_log

        LogLevel debug

        LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined

        LogFormat "%h %l %u %t \"%r\" %>s %b" common

        LogFormat "%{Referer}i -> %U" referer

        LogFormat "%{User-agent}i" agent

        CustomLog logs/xxx-jboss-domain1_access_log combined

       

        KeepAliveTimeout 60

        MaxKeepAliveRequests 0

      </VirtualHost>

       

      # domain2

      <VirtualHost 192.168.100.202:10001>

        ServerName xxx-jboss-domain2.vmdomain.org

        <Directory />

          Order deny,allow

          Allow from all

        </Directory>

       

        ErrorLog logs/xxx-jboss-domain2_error_log

        LogLevel debug

        LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined

        LogFormat "%h %l %u %t \"%r\" %>s %b" common

        LogFormat "%{Referer}i -> %U" referer

        LogFormat "%{User-agent}i" agent

        CustomLog logs/xxx-jboss-domain2_access_log combined

       

        KeepAliveTimeout 60

        MaxKeepAliveRequests 0

      </VirtualHost>

       

      Here is the extract of domain.xml file :

      <subsystem xmlns="urn:jboss:domain:web:1.5" native="false">

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

                      <connector name="ajp" protocol="AJP/1.3" scheme="http" socket-binding="ajp"/>

                      <virtual-server name="master-host" default-web-module="mod_cluster-manager">

                          <alias name="xxx-jboss-master.vmdomain.org"/>

                      </virtual-server>

                      <virtual-server name="domain1-host" default-web-module="cluster-demo">

                          <alias name="xxx-jboss-domain1.vmdomain.org"/>

                      </virtual-server>

                      <virtual-server name="domain2-host" default-web-module="jboss-helloworld">

                          <alias name="xxx-jboss-domain2.vmdomain.org"/>

                      </virtual-server>

      </subsystem>

       

      After started domain controller, slave1, slave2 then httpd, the /mod_cluster-manager returns this :

      mod_cluster.png

      I have no context nor aliases defined to handle my requests.

       

      If i specify a default alias (<subsystem xmlns="urn:jboss:domain:web:1.5" default-virtual-server="master-host" native="false">), then the contexts are ok for mod_cluster-manager, cluster-demo and jboss-helloworld but the alias is unique (xxx-jboss-master.vmdomain.org). The 3 resources are accessible through http://xxx-jboss-master.vmdomain.org/<resource>

       

      I can't figure out what i'm missing but i'm sure there's something ...

       

      May you help ?

       

      Thanks in advance for your support.

       

      Kind regards.

       

      Richard

        • 1. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
          dyegomb
          dyegomb Apr 25, 2014 8:36 PM (in response to rbe1733)

          If I really have understood the question, the only way that this problem was solved by creating a new profile in domain.xml and added the desired profile to this new server-group.

          Sorry for bad english and hope to have helped

          1 of 1 people found this helpful
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          • 2. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
            rbe1733
            rbe1733 Apr 26, 2014 4:18 AM (in response to dyegomb)

            Hi Dyego,

             

            Thanks for your answer and your english is far as good as mine :=))

             

            I had already created different socket-binding groups with a specific interface for each of the server group.

            Here is the configuration on the 3 VMs :

             

            VM1

            - host.xml

            interface domain1 : 192.168.100.201, domain2 : 192.168.100.202

            - domain.xml

            socket-binding-group domain1-group-sockets on interface domain1, socket-binding-group domain2-group-sockets on interface domain2

            server-group domain1-group with socket-binding-group=domain1-group-sockets and profile=full-ha

            server-group domain2-group with socket-binding-group=domain2-group-sockets and profile=full-ha

             

            VM2

            - host.xml

            interface domain1 : 192.168.100.211, domain2 : 192.168.100.212

            server cluster11 : server-group=domain1-group, socket-binding-group=domain1-group-sockets

            server cluster21 : server-group=domain2-group, socket-binding-group=domain2-group-sockets

             

            VM3

            - host.xml

            interface domain1 : 192.168.100.221, domain2 : 192.168.100.222

            server cluster12 : server-group=domain1-group, socket-binding-group=domain1-group-sockets

            server cluster22 : server-group=domain2-group, socket-binding-group=domain2-group-sockets

             

            socket-binding groups domain1-group-sockets and domain2-group-sockets are identical except for the listening interface.

            In other terms, the multicast addresses are equal between the 2 socket-binding groups.

             

            I don't understand why the different socket-binding groups are not sufficient to isolate the 2 clusters and the applications deployed on the belonging servers.

             

            May you precise how to configure different profiles in this context ?

            Do i need to configure one interface per profile ? What about socket-binding groups in this configuration ?

             

            Thanks again for helping.

             

            Richard

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            • 3. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
              dyegomb
              dyegomb Apr 26, 2014 10:11 PM (in response to rbe1733)

              Hi Richard,

              In my lab I just created a new profile using the same sokect bindings and for which profile I setted different alias names and on Apache I used the "UseAlias 1".

              I dont know if it escape from best pratices, but worked for me...

               

              I copied the "ha" profile with new name ("ha-ext") and different alias, and the server groups I choosed the profiles.

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              • 4. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
                rbe1733
                rbe1733 Apr 27, 2014 9:54 AM (in response to dyegomb)

                Hi Dyego,

                 

                Thanks for your feedback.

                 

                Making multiple profiles does the job.

                Now, the test applications are isolated on my diffrent virtual hosts.

                 

                However, i continue using multiple socket-bindings in order to have multiple interfaces.

                Thus, each server group has his own profile and socket-binding.

                 

                I ran extra tests and found that a major part of my jboss_cluster.conf file was useless.

                Here is the new configuration :

                 

                Listen 192.168.100.200:10001

                UseAlias 1

                AdvertiseFrequency 5

                ServerAdvertise on

                MemManagerFile /var/cache/httpd

                 

                <VirtualHost 192.168.100.200:10001>

                  <Directory />

                    Order deny,allow

                    Allow from all

                  </Directory>

                 

                  <Location /mod_cluster-manager>

                   SetHandler mod_cluster-manager

                   Order deny,allow

                   Allow from all

                  </Location>

                 

                  KeepAliveTimeout 60

                  MaxKeepAliveRequests 0

                 

                  ManagerBalancerName master-host

                  EnableMCPMReceive

                </VirtualHost>

                 

                I guess that an unique balancer is sufficient enough to handle the requests on the 2 server groups (MCPM belongs to the first virtualHost where it is declared)

                It seems you don't need to declare multiple balancers to make multiple virtual hosts work.

                 

                I will make extra tests later to see if it's possible to get rid off multiple profiles when you already have multiple socket-bindings.

                Maybe something to deal with default-virtual-server in the virtual servers declaration of jboss:domain:web subsystem ...

                 

                Thanks again for your help.

                 

                Richard

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                • 5. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
                  jaikiran
                  jaikiran Apr 27, 2014 10:07 AM (in response to rbe1733)

                  Moved the topic to JBoss EAP forum.

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                  • 6. Re: How to use multiple virtual servers in JBoss EAP 6.2.0 (AS 7.3.0)
                    rbe1733
                    rbe1733 Apr 27, 2014 3:11 PM (in response to rbe1733)

                    I made a mistake in my last post.

                    The /etc/httpd/conf.d/jboss_cluster.conf MUST contain the following directives in order to work :

                     

                    Listen 192.168.100.200:10001

                    Listen 192.168.100.201:10001

                    Listen 192.168.100.202:10001

                     

                    It is not necessary to declare the VirtualHost sections for .201 and .202 addresses but the listen parameters must be present.

                     

                    Kind

                     

                    Richard

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