[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-472) wildfly-mod_cluster integration should load-balance requests on more than one ports

kostd kostd (JIRA) issues at jboss.org
Sat Nov 28 12:21:00 EST 2015


kostd kostd created MODCLUSTER-472:
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             Summary: wildfly-mod_cluster integration should load-balance requests on more than one ports
                 Key: MODCLUSTER-472
                 URL: https://issues.jboss.org/browse/MODCLUSTER-472
             Project: mod_cluster
          Issue Type: Feature Request
          Components: Core & Container Integration (Java)
    Affects Versions: 1.3.0.Final
         Environment: httpd 2.2
modcluster 1.3.0
wildfly 8.2.0.Final
            Reporter: kostd kostd
            Assignee: Jean-Frederic Clere
            Priority: Trivial
         Attachments: load-balancer-question-scheme.png

Earlier I asked on forums  https://developer.jboss.org/message/946476#946476

{quote}
on our wf8.2 server the web-app have two http endpoints: on port 8080 to regular http requests; and on port 37304 to  "special" user requests in protected area.
 
we want use mod_cluster as load-balancer that balances user requests on both ports. For example(see the pic), lets requests on balancer`s port 7801 will be balance between node1 and node2 on port 8080, and requests on balancer`s port 7802 will be balance on port 37304.
 
In modcluster-subsystem configuration in standalone.xml we can set only one connector for mod-cluster config. And cannot set more than one mod-cluster-config section:
 
{code:title=jboss-as-mod-cluster_1_2.xsd}
      <xs:element name="mod-cluster-config" type="mod-cluster-configType" minOccurs="0" maxOccurs="1"/>
{code}
 
alternatively, we can use mod_cluster + mod_proxy_balancer or mod_cluster + mod_jk so that mod_cluster balances on 8080 and other tech(mod_proxy_balancer or mod_jk) balances on other port 37304.
But this decision obviously not good: reverse loopback from servers(mgmt info with loadfactor of server) to balancer will manage balancing only for one port, not for both.
 
Seems that mod_cluster absolutely not supports more than one connector balancing:
 
{code:title=http://docs.jboss.org/mod_cluster/1.3.0/pdf/Mod_cluster-UserGuide.pdf}
Like mod_jk and mod_proxy_balancer, mod_cluster requires a connector in your server.xml to
which to forward web requests. Unlike mod_jk and mod_proxy_balancer, mod_cluster is not
confined to AJP, but can use HTTP as well. While AJP is generally faster, an HTTP connector
can optionally be secured via SSL. If multiple possible connectors are defined in your server.xml,
mod_cluster uses the following algorithm to choose between them:
1. If an native (APR) AJP connector is available, use it.
2. If an AJP connector is available, use it.
3. Otherwise, choose the HTTP connector with the highest max threads.
{code}
 
is this true?
 
what is the best way to solve our problem?
{quote}

During more than 100 views no one answer :'(

Now we have made a decision to use mod_proxy_balancer, but if it possible to refine mod_cluster subsystem, this will be greate. When it happens, we jump to mod_cluster again :)



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