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Tim,
On 1/10/19 08:30, Tim K wrote:
> On Wed, Jan 9, 2019, 2:16 PM Christopher Schultz <
> ch...@christopherschultz.net wrote:
>
> Tim,
>
> On 1/9/19 10:39, Tim K wrote:
>>>> I'm trying to split 4 separate tomcat instances into 2
>>>> clusters (2x2) to try and avoid the all-to-all traffic, but
>>>> even when setting up the Receiver and Static members to only
>>>> speak to 1 other instance, some still seems to find and add
>>>> the other members outside of the defined config to the wrong
>>>> cluster. I read that mcast is still used when you have
>>>> StaticMembers, could that be causing this issue?
>
> Multicast is only used for membership, so if you are using static,
> there should be no multicast.
>
> Do you want to post your configuration(s)?
>
> -chris
>>
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>
>
> Essentially I'm trying to have server1 and server2 only in cluster1
> and server3 and server4 in only cluster2, but for some reason,
> members are getting added to clusters that they aren't configured
> for.
>
>
>
> server1 config:
>
> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
> channelSendOptions="8">
>
> <Manager className="org.apache.catalina.ha.session.DeltaManager"
> expireSessionsOnShutdown="false"
> notifyListenersOnReplication="true"/>
>
> <Channel
> className="org.apache.catalina.tribes.group.GroupChannel">
>
> <Receiver
> className="org.apache.catalina.tribes.transport.nio.NioReceiver"
> address="auto" port="4000" autoBind="100" selectorTimeout="5000"
> maxThreads="6"/>
>
> <Sender
> className="org.apache.catalina.tribes.transport.ReplicationTransmitter
">
>
> <Transport
> className="org.apache.catalina.tribes.transport.nio.PooledParallelSend
er"/>
>
> </Sender>
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.EncryptInterc
eptor"
>
>
encryptionKey="****Removed****" />
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.TcpPingInterc
eptor"/>
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.TcpFailureDet
ector"/>
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.MessageDispat
chInterceptor"/>
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.StaticMembers
hipInterceptor">
>
> <Member
> className="org.apache.catalina.tribes.membership.StaticMember"
> host="server2" port="4000" domain="cluster1"
> uniqueId="{1,0,2,3,4,5,6,7,8,9,10,11,12,13,14,15}"/>
>
> </Interceptor>
>
> </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.ClusterSessionListener"/>
>
> </Cluster>
>
>
>
> server2 [everything the same except the <Member/> is]:
>
> <Member
> className="org.apache.catalina.tribes.membership.StaticMember"
> host="server1" port="4000" domain="cluster1"
> uniqueId="{0,0,2,3,4,5,6,7,8,9,10,11,12,13,14,15}"/>
>
>
>
> server3 [everything the same except the <Member/> is]:
>
> <Member
> className="org.apache.catalina.tribes.membership.StaticMember"
> host="server4" port="4000" domain="cluster2"
> uniqueId="{4,0,2,3,4,5,6,7,8,9,10,11,12,13,14,15}"/>
>
>
>
> server4 [everything the same except the <Member/> is]:
>
> <Member
> className="org.apache.catalina.tribes.membership.StaticMember"
> host="server3" port="4000" domain="cluster2"
> uniqueId="{3,0,2,3,4,5,6,7,8,9,10,11,12,13,14,15}"/>
I don't see any <Membership> element in your configuration. I think
you are missing this:
http://tomcat.apache.org/tomcat-9.0-doc/config/cluster-membership.html#S
tatic_Membership_Attributes
The documentation for the static membership interceptor doesn't seem
to mention that the <Membership> element is required as well. There is
definitely an opportunity to improve some of the documentation in this
area.
(It's also theoretically possible for the cluster setup to perform a
sanity-check; if you have configured a StaticMembershipInterceptor,
you'd better have a StaticMembership <Membership> manager to go with
it. I'm not clear on why they are separate things that can even be
configured separately/improperly.)
- -chris
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