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Dave,
On 10/30/17 6:19 AM, Dave Ford wrote:
> Hello,
>
> I should apologise in advance as I'm very new to Tomcat and, I'm
> sure, will be making some daft mistakes and silly errors. I hope
> this question and any that follow it aren't too dumb.
>
> I've recently started a new job and have inherited a half-finished
> tomcat cluster on solaris.
>
> While I'm not going to immediately try and finish that cluster, I
> would like to try setting up some test instances to ensure I know
> what to expect - but I'm having trouble doing even this.
>
> I've gotten my head round how to set up individual instances of
> Tomcat 8.5.23 running from different sub folders of a common
> CATALINA_HOME folder, and now I'm trying to get the two instances
> to talk to each other using StaticMember on specific ports rather
> than the automatic multicasting.
>
> But instances start up, and the logs at least suggest they're aware
> of each other. But one server takes forever to start, and I'm not
> convinced they're talking to each other properly. For example, in
> the catalina.out logs I'm seeing messages such as:
>
>
> 30-Oct-2017 09:28:29.632 INFO [MyHost-startStop-1]
> org.apache.catalina.ha.session.DeltaManager.getAllClusterSessions
> Manager [/sample], requesting session state from
> [org.apache.catalina.tribes.membership.StaticMember[tcp://my.ip.addr:4
0
>
>
01,my.ip.addr,4001, alive=0, securePort=-1, UDP Port=-1, id={1 2 3 4 5
> 6 7 8 9 10 11 12 13 14 15 0 }, payload={}, command={}, domain={99
> 108 117 115 116 101 114 116 101 ...(11)}, ]]. This operation will
> timeout if no session state has been received within [60] seconds.
> 30-Oct-2017 09:28:34.111 WARNING
> [Tribes-Task-Receiver[MyHost-Channel]- 2]
> org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.
m
>
>
essageReceived Received message from
> cluster[org.apache.catalina.tribes.membership.MemberImpl[tcp://{my,
> ip, nn, nn}:4001,{my, ip, nn, nn},4001, alive=1509355714104,
> securePort=- 1, UDP Port=-1, id={1 2 3 4 5 6 7 8 9 10 11 12 13 14
> 15 0 }, payload={}, command={}, domain={99 108 117 115 116 101 114
> 116 101 ...(11)}, ]] was refused.
>
> Which does not seem encouraging. Yet on the other instance, I'm
> seeing:
>
> 30-Oct-2017 09:28:34.105 INFO
> [GroupChannel-Heartbeat[MyHost-Channel]- 1]
> org.apache.catalina.ha.tcp.SimpleTcpCluster.memberAdded
> Replication member
> added:[org.apache.catalina.tribes.membership.StaticMember[tcp://my.ip.
a
>
>
ddr:4000,my.ip.addr,4000, alive=0, securePort=-1, UDP Port=-1, id={0 1
> 2 3 4 5 6 7 8 9 10 11 12 13 14 15 }, payload={}, command={},
> domain={99 108 117 115 116 101 114 116 101 ...(11)}, ]] 30-Oct-2017
> 09:28:34.105 INFO [GroupChannel-Heartbeat[MyHost-Channel]- 1]
> org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.perfo
r
>
>
mBasicCheck Suspect member, confirmed
> alive.[org.apache.catalina.tribes.membership.StaticMember[tcp://my.ip.
a
>
>
ddr:4000,my.ip.addr,4000, alive=0, securePort=-1, UDP Port=-1, id={0 1
> 2 3 4 5 6 7 8 9 10 11 12 13 14 15 }, payload={}, command={},
> domain={99 108 117 115 116 101 114 116 101 ...(11)}, ]]
>
> Which seems better... But then I see back on instance one,
>
> 30-Oct-2017 09:32:30.178 INFO [main]
> org.apache.catalina.startup.Catalina.start Server startup in 241109
> ms
>
> Which seems really bad.
>
> I've installed the 'examples' app on both instances, have added
> '<distributable/>' to both's web.xml file.
>
> I can see on one instance a message such as
>
> 30-Oct-2017 09:35:22.600 INFO [http-nio-8081-exec-7]
> org.apache.catalina.core.ApplicationContext.log SessionListener:
> sessionCreated('C2C3720879E72D558EEF4B0655188EBD.beta') 30-Oct-2017
> 09:35:26.912 INFO [http-nio-8081-exec-8]
> org.apache.catalina.core.ApplicationContext.log SessionListener:
> attributeAdded('C2C3720879E72D558EEF4B0655188EBD.beta', 'foo',
> 'bar')
>
> When I play with the sessions example code. But nothing on the
> other instance that would suggest this is being replicated.
>
> Before I make this post too long and post my server.xml code,
> could someone advise me as to what I should be looking for, or what
> these messages suggest? Any pointers at this stage would be
> grateful as I'm unsure even what a working cluster should look
> like.
Can you please post your <Cluster> and associated elements from
conf/server.xml -- minus any secrets that may have crept in there?
Also, what does your network look like? Any intermediates such as load
balancers/firewalls? What about software firewalls?
- -chris
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