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Posted to dev@tomcat.apache.org by Haroon Rafique <ha...@utoronto.ca> on 2008/01/31 21:33:24 UTC
slight gotcha with tomcat 6.0 cluster startup with already running
tomcat 5 cluster on the network
Hi there,
I ran into something today which might help someone out later so I'm
posting this here. On my network, I didn't know that I had an old install
of tomcat 5.5.23 running with <Cluster> config enabled. I installed tomcat
6.0.14 on a new machine with <Cluster> config enabled (simple 1-liner in
6.0.x). Upon startup of the 6.0.14 tomcat I got a less than helpful error
regarding the cluster.
Here's the relevant log entries:
Jan 31, 2008 2:53:13 PM org.apache.catalina.ha.tcp.SimpleTcpCluster start
INFO: Cluster is about to start
Jan 31, 2008 2:53:13 PM org.apache.catalina.tribes.transport.ReceiverBase
bind
INFO: Receiver Server Socket bound to:/my.ip.address.here:4000
Jan 31, 2008 2:53:13 PM
org.apache.catalina.tribes.membership.McastServiceImpl setupSocket
INFO: Setting cluster mcast soTimeout to 500
Jan 31, 2008 2:53:13 PM
org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
INFO: Sleeping for 1000 milliseconds to establish cluster membership,
start level:4
So, far so good. Then came this bit:
Jan 31, 2008 2:53:13 PM
org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread run
WARNING: Error receiving mcast package. Sleeping 500ms
java.lang.IllegalArgumentException: Invalid package, should start
with:{84, 82, 73, 66, 69, 83, 45, 66}
at
org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:317)
at
org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:293)
at
org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:398)
at
org.apache.catalina.tribes.membership.McastServiceImpl.receive(McastServiceImpl.java:284)
at
org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread.run(McastServiceImpl.java:366)
which didn't tell me whole lot. This exception was repeated at a frequency
of almost 1 per second. To resolve this, it took me a few hours or so to
figure out that the old tomcat 5.5 was still running with <Cluster>
enabled which was the cause of this.
Could something be done to catch this situation and display a more helpful
message?
Thanks,
--
Haroon Rafique
<ha...@utoronto.ca>
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Re: slight gotcha with tomcat 6.0 cluster startup with already running
tomcat 5 cluster on the network
Posted by Filip Hanik - Dev Lists <de...@hanik.com>.
thanks for the feedback, we can add in a message, that notifies the user
that we are receiving invalid multicast packets and that there is
probably some other piece of software broadcasting on our channel
Filip
Haroon Rafique wrote:
> Hi there,
>
> I ran into something today which might help someone out later so I'm
> posting this here. On my network, I didn't know that I had an old
> install of tomcat 5.5.23 running with <Cluster> config enabled. I
> installed tomcat 6.0.14 on a new machine with <Cluster> config enabled
> (simple 1-liner in 6.0.x). Upon startup of the 6.0.14 tomcat I got a
> less than helpful error regarding the cluster.
>
> Here's the relevant log entries:
>
> Jan 31, 2008 2:53:13 PM org.apache.catalina.ha.tcp.SimpleTcpCluster start
> INFO: Cluster is about to start
> Jan 31, 2008 2:53:13 PM
> org.apache.catalina.tribes.transport.ReceiverBase bind
> INFO: Receiver Server Socket bound to:/my.ip.address.here:4000
> Jan 31, 2008 2:53:13 PM
> org.apache.catalina.tribes.membership.McastServiceImpl setupSocket
> INFO: Setting cluster mcast soTimeout to 500
> Jan 31, 2008 2:53:13 PM
> org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
> INFO: Sleeping for 1000 milliseconds to establish cluster membership,
> start level:4
>
> So, far so good. Then came this bit:
>
> Jan 31, 2008 2:53:13 PM
> org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread run
> WARNING: Error receiving mcast package. Sleeping 500ms
> java.lang.IllegalArgumentException: Invalid package, should start
> with:{84, 82, 73, 66, 69, 83, 45, 66}
> at
> org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:317)
>
> at
> org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:293)
>
> at
> org.apache.catalina.tribes.membership.MemberImpl.getMember(MemberImpl.java:398)
>
> at
> org.apache.catalina.tribes.membership.McastServiceImpl.receive(McastServiceImpl.java:284)
>
> at
> org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread.run(McastServiceImpl.java:366)
>
>
> which didn't tell me whole lot. This exception was repeated at a
> frequency of almost 1 per second. To resolve this, it took me a few
> hours or so to figure out that the old tomcat 5.5 was still running
> with <Cluster> enabled which was the cause of this.
>
> Could something be done to catch this situation and display a more
> helpful message?
>
> Thanks,
> --
> Haroon Rafique
> <ha...@utoronto.ca>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: dev-help@tomcat.apache.org
>
>
>
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