[Spread-users] Bug in spread - message counter

John Lane Schultz jschultz at spreadconcepts.com
Tue Apr 8 12:55:54 EDT 2008


Could you chime in on this question, please?

If you don't have a machine with at least two such network
interfaces, then I'm not sure if you can run multiple daemons on the
same IP address.

If you do have at least two network interfaces on the machine where both
interfaces can route to and from all the other daemons in the
network, then you can easily do it by simply adding a seperate entry in
your configuration file for the second interface and running a spread
daemon on it.

If the second interface is not in the same broad/multicast domain as
the other daemons, then you will need to add a new Spread_Segment
containing the new daemon/interface that you are adding to the system.


John Lane Schultz
Spread Concepts LLC
Phn: 443 838 2200 
Fax: 301 560 8875

Tuesday, April 8, 2008, 11:53:31 AM, you wrote:

> Tuesday 08 April 2008 17:48:08 napisałeś(-łaś):
>> Clients on the one daemon that you partition away will miss whatever
>> traffic is sent by clients on the other daemons during the partition.
>> Clients on the daemons that stay together will miss whatever traffic
>> is sent by clients on the daemon that is partitioned away during the
>> partition.
>> If you don't want your applications to miss any traffic during the
>> partition, then simply don't make any client connections to the one
>> daemon that you intend to partition in and out of the system.  In
>> other words, reserve one daemon solely for the purpose of
>> partitioning it into and out of the system and don't let clients
>> connect to it.  If you do this, then your clients will not miss any
>> traffic due to the artificial partition you create.
>> In fact, if you do it this way, then the applications will not even realize
>> that a partition ever even occurred as membership messages will not
>> be generated in any of the client groups because their memberships
>> are unaffected by the daemon level membership change.  The only thing
>> the applications may notice are short pauses in message
>> injection+delivery as the daemons handle the connectivity changes.
> Is there then possible to run two spread daemons on one machine? one for sole
> purpose of beeing partitioned out? How would that work?

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