Tomcat on ec2

[fawzyj]

Hello all

i am a newbie to mod_cluster, so please excuse me if i have some trivial questions

i have a setup on amazon ec2 , using tomcat on ubuntu linux

i think mod_cluster is a perfect solution in my case but i really need some advice to clarify some concerns

i watched the webinar on vimeo

i read all the documentation so i have a basic understanding of how things work

BUT i have some questions

First:About using tomcat

if i continue to use plain tomcat,

do i have to deal with session replication myself?

do you recommend any session replication solution?

i 've used memcacheSessionManager with sticky session and it works, but it does not scale well,so please i need a hand in this area

as i understood , session replication is only provided in the all profile of JBOSS AS, not even in JBossWeb

so to get out of the box solution, i have to use a complete JEE server

is that true?

Second:on EC2

no multicast,no advertise

so how to setup GossipRouter?

What exactly is its role?

can i have any configuration in which no hard wiring ip numbers in my config in both sides(httpd and application server)

i knew from the webinar that a solution using amazon S3 is there

where can i find it? and how it can be configured?

is it production ready or just a proof of concept

is dynamic discovery pluggable? i.e. is there an interface to implement to publish the ip address of my appservers to httpd and to provide the ip address of httpd to application servers

actually, as i am on aws/ec2, i think we can accomplish a sort of bidirectional advertising using SNS and/or SQS

or may be your S3 implementation just work

that's a lot of questions i know, i apologize

but, please be patient

thanks in advance

Joe

[belaban]

To run a cluster on EC2 using S3, take a look at https://www.jboss.org/dms/judcon/presentations/Berlin2010/JUDCon2010Berlin_RunningJBossClusterintheCloud.pdf

[fawzyj]

Hi dear
the presentation assume using jbossAS , but i intend to use tomcat
as stated in the docs, all the attributes should be added to the listener element in server.xml
so what is the required attributes and its values to make me use tomcat with S3 support, specifcally proxyList,and advertise elements
<Listener className="org.jboss.modcluster.catalina.ModClusterListener" advertise="true" proxyList="test.example.com:6666"/>

also on the http side
i do not want to hardwire any ip addresses
should i use
 
Listen 6666
or
Listen mydomain.com:6666
or i have to use
Listen 10.33.144.3:6666

also in the virtual host


 <VirtualHost 10.33.144.3:6666>
 
   <Directory />
      Order deny,allow
      Deny from all
      Allow from 10.33.144.
   </Directory>


thanks a lot
Joe