This reference is what we used - it seemed to work fine for us:
http://tomcat.apache.org/tomcat-6.0-doc/cluster-howto.html
Don't forget to add this part:
<distributable/>
Into the 'web.xml' file from the ".war" files you want to use clustered
sessions.
In our environment, we have 4 ".war" files with various webapps we deploy. Only
our 'ROOT.war' is "clustered" though. So it is the
only ".war" file with the distributable tag in its web.xml.
Also, we changed a few settings in the 'server.xml' file settings, such as:
1) Changed the "channelSendOptions" setting to '6' instead of '8'...
2) Increased some of the timeouts (we have a high-volume environment,
and 4 clustered tomcats)
3) Removed the 'autobind' and manually set the IP addresses of the
Receiver (it was picking the
wrong interface - lo0 (127.0.0.1) instead of 'et0'...)
Lastly, you need to change (at least) the port # for the "McastService" if you
are running multiple clusters on the same network.
(For example, all of our developers have their own "personal" clusters - so
each of them uses a different 'port' for their cluster's
multicast messages - this avoids cross-talk between their cluster and our main
environment. Of course, our production environment is
completely isolated from this - but when you are testing multiple environments,
this can be confusing...)
PS. We made adjustments to the DeltaManager and SessionManager code for some
unique session issues we had - because we are using
Tapestry, and it creates a session if there are any 'form' tags on a page. This
meant that our site was creating a session for every
visitor - which sort of overwhelmed the cluster (all sessions are supposed to
be replicated to all cluster members - right?)... So
our adjustments just keep certain sessions from wasting cluster bandwidth if
they are of sufficiently short duration so as not to
warrant replication. The best way to avoid this is to not create sessions that
you don't really want replicated to all members of
the cluster.
--
Robin D. Wilson
Director of Web Development
KingsIsle Entertainment, Inc.
CELL: 512-426-3929
DESK: 512-623-5913
www.KingsIsle.com
-----Original Message-----
From: Josef Pullicino [mailto:josef.pullic...@go.com.mt]
Sent: Friday, March 12, 2010 3:30 AM
To: Tomcat Users List
Subject: How to setup Tomcat Cluster - Help needed
Dear All,
I would like to setup a tomcat cluster with 2 nodes. The configuration
must be in a horizontal alignment, meaning that the two nodes are going
to reside on two different machines. Any idea of how to set it up since
the default tomcat help guide does not provide any configuration
examples.
Any help would be greatly appreciated.
Thanks for your support,
Regards,
Josef Pullicino
Systems Administrator
GO
GO Mobile, Fra Diego Street, Marsa, MRS 1501, Malta.
t +356 2594 6827 f +356 2124 0112
w www.go.com.mt
This email and any files or content transmitted with it are confidential
and intended solely for the use of the individual or entity to whom they
are addressed. This message contains confidential information and is
intended only for the individual named. If you are not the named
addressee you should not disseminate, distribute or copy this e-mail.
Please notify the sender immediately by e-mail if you have received this
e-mail by mistake and delete this e-mail from your system. If you are
not the intended recipient you are notified that disclosing, copying,
distributing or taking any action in reliance on the contents of this
information is strictly prohibited. The Company and the originator of
this email accept no liability for the content of this email, or for the
consequences of any actions taken on the basis of the information
provided, unless that information is subsequently confirmed in writing.
If you are not the intended recipient you are notified that disclosing,
copying, distributing or taking any action in reliance on the contents
of this information is strictly prohibited.
Warning: Although the Company and the originator have taken reasonable
precautions to ensure no viruses are present in this email, the company
cannot accept responsibility for any loss or damage arising from the use
of this email or attachments.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
