As Andrea said "peer to peer in the default configuration requires *multicast* to be enabled in your network" and sometimes this is not the case. If multicast is enabled in your network and with the firewalls deactivated I cannot think about anything else at the moment :(

If nothing works I would suggest do a try with a standalone ActiveMQ.

On 09/21/2016 09:38 PM, Kevin Berger wrote:

Hello,

As a follow-up, on the network side we have turned off the firewalls on the 2 geoservers and we are still getting the error. The error message below indicates it is trying to start a network bridge with itself - communicate between its own instanceName and localhost (127.0.0.1)). Is this expected behaviour – or should it try to start a bridge with another server instance?

We have GeoServer 2.8.2 installed with Java 8 Update 92.

2016-09-21 08:10:43,834 WARN [network.DiscoveryNetworkConnector] - Could not start network bridge between: vm://3404d32d-6cd6-4ccb-a9f8-2ee428c12977?async=false&network=true and: nio://127.0.0.1:57496 <http://127.0.0.1:57496> due to: java.net.ConnectException: Connection refused: no further information

Is there any other suggestions we can try? Maybe a configuration tweak somewhere?

Kevin

*From:*Kevin Berger
*Sent:* September 21, 2016 10:43
*To:* 'Nuno Oliveira'; Andrea Aime
*Cc:* geoserver-users@lists.sourceforge.net
*Subject:* RE: [Geoserver-users] GeoServer Clustering - Embedded Brokers

Hi Nuno,

We verified that the logs match the contents as outlined below, so we will consider the brokers are correctly enabled. We will proceed to look at the network. Thanks for your feedback.

Kevin

*From:*Nuno Oliveira [mailto:nuno.olive...@geo-solutions.it]
*Sent:* September 21, 2016 10:28
*To:* Kevin Berger; Andrea Aime
*Cc:* geoserver-users@lists.sourceforge.net <mailto:geoserver-users@lists.sourceforge.net>
*Subject:* Re: [Geoserver-users] GeoServer Clustering - Embedded Brokers

Hi,

The ERROR line in the log is a "false error" that log should actually be a INFO.
Debugging the embedded broker is not very easy since he don't have access
to ActiveMQ web console.

In fact you can consider the broker is correctly enable if you have something like this:

21 Sep 17:17:50 ERROR [cluster.impl] - Started the embedded brokerURI: BrokerService[f088d295-ab15-470a-a45e-bba8cc3fad8a]
21 Sep 17:17:50 INFO [cluster.client] - Connecting...
21 Sep 17:17:50 INFO [cluster.impl] - Using brokerURI: vm://f088d295-ab15-470a-a45e-bba8cc3fad8a?create=false&waitForStart=5000
21 Sep 17:17:50 INFO [cluster.client] - Registration...
21 Sep 17:17:50 INFO [cluster.client] - Impossible to register GeoServer with destination, waiting...
21 Sep 17:17:50 INFO [cluster.client] - Waiting for registration...(1/3)
21 Sep 17:17:50 WARN [TransportConnection.Transport] - Transport Connection to: tcp://127.0.0.1:58474 failed: java.io.EOFException
21 Sep 17:18:00 INFO [cluster.client] - Registration...
21 Sep 17:18:00 INFO [cluster.client] - Now GeoServer is registered with the destination 21 Sep 17:18:00 INFO [cluster.server] - Activating JMS Catalog event publisher... 21 Sep 17:18:00 INFO [cluster.server] - Activating JMS Catalog event publisher...

Regards,

Nuno Oliveira

On 09/21/2016 05:06 PM, Kevin Berger wrote:

    Hi Andrea,

    The GUI page indicates Embedded broker is enabled.

    Logs appear to indicate broker is enabled. Getting messages like:

    2016-09-21 08:02:56,277 ERROR [cluster.impl] - Started the
    embedded brokerURI:
    BrokerService[3404d32d-6cd6-4ccb-a9f8-2ee428c12977]

    2016-09-21 08:02:56,277 INFO [cluster.client] - Connecting...

    2016-09-21 08:02:56,277 INFO [cluster.impl] - Using brokerURI:
    vm://3404d32d-6cd6-4ccb-a9f8-2ee428c12977?create=false&waitForStart=5000

    Although we are not sure why the Started the embedded line
    indicates ERROR (is this a true error; or false reprting)

    As I think we can conclude embedded broker is enabled, looking at
    the network is our second troubleshooting step so we will
    investigate that angle.

    Thanks for your feedback.

    Kevin

    *From:*andrea.a...@gmail.com <mailto:andrea.a...@gmail.com>
    [mailto:andrea.a...@gmail.com] *On Behalf Of *Andrea Aime
    *Sent:* September 21, 2016 09:31
    *To:* Kevin Berger
    *Cc:* geoserver-users@lists.sourceforge.net
    <mailto:geoserver-users@lists.sourceforge.net>
    *Subject:* Re: [Geoserver-users] GeoServer Clustering - Embedded
    Brokers

    Hi Kevin,

    I'm just going by memory, but believe you can simply look at the
    configuration page for the cluster to

    check if the embedded broker is enabled? It should also be logging
    on the logs on startup.

    However, per to peer in the default configuration requires
    multicast to be enabled in your network, so that nodes

    can find each other. Is that the case for you?

    Cheers

    Andrea

    On Wed, Sep 21, 2016 at 4:19 PM, Kevin Berger
    <kevin.ber...@silvacom.com <mailto:kevin.ber...@silvacom.com>> wrote:

        Hello,

        We have set up clustering between 2 geoservers. We want to
        implement the "Peer-to-peer newtork with embedded brokers and
        shared data directory" topology.

        We are using the default cluster configuration (broker.xml;
        cluster.properties; embedded-broker.properties). However, the
        geoserver.log is reporting errors like:

        2016-09-21 08:10:43,834 WARN
        [network.DiscoveryNetworkConnector] - Could not start network
        bridge between:
        vm://3404d32d-6cd6-4ccb-a9f8-2ee428c12977?async=false&network=true
        and: nio://127.0.0.1:57496 <http://127.0.0.1:57496> due to:
        java.net.ConnectException: Connection refused: no further
        information

        As a first troubleshooting step, we want to verify embedded
        broker is running on each server. Is there a way to verify the
        embedded broker is running?

        Thanks,

        Kevin


        
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anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per 
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principi dettati dal D.Lgs. 196/2003.
The information in this message and/or attachments, is intended solely for the attention and use of
the named addressee(s) and may be confidential or proprietary in nature or 
covered by the provisions of privacy act (Legislative Decree
June, 30 2003, no.196 - Italy's New Data Protection Code).Any use not in accord 
with its purpose, any disclosure, reproduction, copying,
distribution, or either dissemination, either whole or partial, is strictly 
forbidden except previous formal approval of the named
addressee(s). If you are not the intended recipient, please contact immediately 
the sender by telephone, fax or e-mail and delete the
information in this message that has been received in error. The sender does 
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accuracy or completeness of sent messages and accepts no responsibility  for 
changes made after they were sent or for other risks which
arise as a result of e-mail transmission, viruses, etc.

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Visit http://goo.gl/it488V for more information.
==
Nuno Miguel Carvalho Oliveira
@nmcoliveira
Software Engineer

GeoSolutions S.A.S.
Via di Montramito 3/A
55054  Massarosa (LU)
Italy

phone: +39 0584 962313
fax:   +39 0584 1660272
mob:   +39  333 8128928

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

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Vostro sistema. Conservare il messaggio stesso, divulgarlo
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finalità diverse, costituisce comportamento contrario ai
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the named addressee(s) and may be confidential or proprietary in nature or 
covered by the provisions of privacy act (Legislative Decree
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with its purpose, any disclosure, reproduction, copying,
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