On Sep 17, 2013, at 4:18 PM, Daniel Mikusa <dmik...@gopivotal.com> wrote:
> On Sep 17, 2013, at 3:39 PM, Nicholas Violi <nvi...@globalgiving.org> wrote:
>
>> On Tue, Sep 17, 2013 at 3:21 PM, Daniel Mikusa <dmik...@gopivotal.com>wrote:
>>
>>> What is your purpose with this configuration and with this setup? It's a
>>> legit setup, but may not be doing what you want.
>>>
>>> Typically you would use mod_proxy & mod_proxy_balancer (or mod_jk) to
>>> front a cluster of Tomcat servers.
>>
>>
>> In production we have a dedicated hardware load balancer in front of
>> standalone servers that each run one instance of apache connected to one
>> tomcat, so when I was looking to extend that for local testing, I just
>> added another VirtualHost. Since apache is not concerned with load
>> balancing in production, I don't need to complicate my local system with
>> that detail.
>
> I would disagree with this conclusion. In your test setup you absolutely
> need this. In production, you don't need HTTPD because you have a dedicated
> hardware load balancer. Unless you have one of those on your desk, you need
> HTTPD to perform that role.
>
> Dan
Disregard this. For some reason I was thinking HTTPD is necessary. Chris is
right as usual, it's not necessary for a simple test.
Tried a quick two node setup on my Mac w/out HTTPD and it worked OK. Go to one
Tomcat instance's port in chrome, it increments the counter in my app. Refresh
a few times. Open a second tab, go to the second Tomcat instance's port. The
counter picks up where it left off and continues incrementing. Flipping back
and forth between tabs / servers works fine.
Here's the cluster config that I used in case it helps.
<Cluster channelSendOptions="8"
className="org.apache.catalina.ha.tcp.SimpleTcpCluster">
<Manager className="org.apache.catalina.ha.session.DeltaManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"/>
<Channel
className="org.apache.catalina.tribes.group.GroupChannel">
<Membership address="228.0.0.4"
className="org.apache.catalina.tribes.membership.McastService"
dropTime="3000"
frequency="500"
port="45564"/>
<Receiver address="auto"
autoBind="100"
className="org.apache.catalina.tribes.transport.nio.NioReceiver"
maxThreads="6"
port="4000"
selectorTimeout="5000"/>
<Sender
className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transport
className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
</Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
filter=""/>
<Valve
className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<ClusterListener
className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
<ClusterListener
className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
Beyond that, have you tried increasing the log levels?
Dan
>
>
>>
>> Thanks,
>> Nick
>
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