Tomcat 6 clustering without mulicast

["SANCHEZ, Michel" <mi...@airbus.com>]

Hi all

I would like to know if it is possible to do tomcat 6 clustering  without multicast IP.
In other words by defining a full static cluster in which all the heartbeat stuff is done by unicast.

If yes please coluld you tel me how to configure it.
I tried a SimpleTcpCluster without McastService declaration and with two StaticMemberShipInterceptors but my nodes always sends multicast messages on default address  228.0.0.4.45564

Thanks for help.
Michel



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Re: Tomcat 6 clustering without mulicast

[Filip Hanik - Dev Lists <de...@hanik.com>]

it is absolutely possible, but now when you mention it, the ability to 
not start the multicasting piece has not been exposed. The rest has.

But there is a simple workaround for you, you can create an interceptor, 
that traps the start call, and removes the option to start multicasting

it could look like this

package org.apache.catalina.ha.tcp;

import org.apache.catalina.tribes.group.ChannelInterceptorBase;
import org.apache.catalina.tribes.ChannelException;
import org.apache.catalina.tribes.Channel;

public class DisableMcastInterceptor extends ChannelInterceptorBase {
    public DisableMcastInterceptor() {
        super();
    }

    public void start(int svc) throws ChannelException {
        svc = (svc & (~Channel.MBR_TX_SEQ));
        super.start(svc);
    }
}

and then, you can have the static membership interceptor to hearbeats 
over TCP instead.

Filip

SANCHEZ, Michel wrote:
> Hi all
>
> I would like to know if it is possible to do tomcat 6 clustering  without multicast IP.
> In other words by defining a full static cluster in which all the heartbeat stuff is done by unicast.
>
> If yes please coluld you tel me how to configure it.
> I tried a SimpleTcpCluster without McastService declaration and with two StaticMemberShipInterceptors but my nodes always sends multicast messages on default address  228.0.0.4.45564
>
> Thanks for help.
> Michel
>
>
>
> This e-mail is intended only for the above addressee. It may contain privileged information.
> If you are not the addressee you must not copy, distribute, disclose or use any of the information in it. 
> If you have received it in error please delete it and immediately notify the sender.
> Security Notice: all e-mail, sent to or from this address, may be accessed by someone other than the recipient, for system management and security reasons. This access is controlled under Regulation of security reasons.
> This access is controlled under Regulation of Investigatory Powers Act 2000, Lawful Business Practises.
>
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
>
>   


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