Sorry, I don't understand what you mean by 1 node cluster.
--
Vilius
-----Original Message-----
From: William Crowell <[email protected]>
Sent: Wednesday, March 19, 2025 3:02 PM
To: [email protected]
Subject: Re: What HA Replication Policy Is For Active-Active Topology
Vilius,
Thank you for your reply. Can we do 2 broker clusters of 1 node each with HA
on top? The HA piece only cares whether a cluster is defined and not
necessarily if it is a health cluster.
Regards,
William Crowell
From: Vilius Šumskas <[email protected]>
Date: Tuesday, March 18, 2025 at 8:23 AM
To: [email protected] <[email protected]>
Subject: RE: What HA Replication Policy Is For Active-Active Topology [You
don't often get email from [email protected]. Learn why this is
important at https://aka.ms/LearnAboutSenderIdentification ]
Hi,
active/active deployment you are talking about in Artemis world is just "group
of brokers". It doesn't provide you HA by default, but two groups can be
configured for HA. It's a little bit wasteful because you will have to add 3-4
broker to satisfy your requirements, but generally it works.
I recommend reading RedHat's AMQ (which is based on Artemis) clustering
documentation at
https://docs.redhat.com/en/documentation/red_hat_amq/7.4/html/configuring_amq_broker/setting-up-broker-cluster-configuring#setting-up-broker-cluster-configuring
. They have a little bit more information and some nice pictures to understand
how Artemis clustering can be configured.
--
Vilius
-----Original Message-----
From: William Crowell <[email protected]>
Sent: Tuesday, March 18, 2025 1:53 PM
To: [email protected]
Subject: Re: What HA Replication Policy Is For Active-Active Topology
Domenico,
Hi. I require 2 brokers to be primary/active at the same time. The way the
documentation is written it does not come out and say you can run with that
configuration; however, this statement leads you to believe that configuration
is possible:
https://activemq.apache.org/components/artemis/documentation/latest/clusters.html#performance-considerations<https://activemq.apache.org/components/artemis/documentation/latest/clusters.html#performance-considerations>
1. “Start simple. Benchmark your use-case with a single broker first. A
single broker can handle millions of messages per second in certain use-cases.
If you can’t meet your performance goal with a single broker only then move to
a clustered configuration. Only add complexity when there is a clear benefit.”
Regards,
William Crowell
From: Domenico Francesco Bruscino <[email protected]>
Date: Tuesday, March 18, 2025 at 6:15 AM
To: [email protected] <[email protected]>
Subject: Re: What HA Replication Policy Is For Active-Active Topology Hi
William,
the HA policies allow the system to continue functioning after failure of one
or more of the servers. They require at least 2 brokers to work. The first
broker is active and the second broker waits for the first broker failure to
replace it reloading durable/persisted messages. In this way, the client
connections can migrate from one server to another in event of server failure
so client applications can continue to operate.
Can you clarify your expectations from an active/active deployment?
Regards,
Domenico
On Mon, 17 Mar 2025 at 16:22, William Crowell <[email protected]>
wrote:
> Good morning,
>
> It appears all HA policies are for active/passive setup. Are there
> any for active/active? Does this exist?
>
> I was reading through:
> https://activemq.apache.org/components/artemis/documentation/latest/ha
> <https://activemq.apache.org/components/artemis/documentation/latest/h
> a>
> .html#replication<https://activemq.apache.org/components/artemis/docum
> entation/latest/ha.html#replication>
>
> For example, you have 2 Artemis brokers and you want them both to be
> active at the same time, and the data directories are separate.
>
> Would you just specify the following in broker.xml on both servers?
>
> <ha-policy>
> <replication>
> <primary/>
> </replication>
> </ha-policy>
>
> I looked through the examples here and could not find it (unless I
> missed
> it):
>
>
> https://github.com/apache/activemq-artemis-examples/tree/main/examples
> /features/ha
>
> Regards,
>
> William Crowell
>
>
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