Your screenshot didn't come through the list. In any case, I'm pretty confused at this point. You're clearly using a colocated configuration that will request a backup from another broker in the cluster, but you say you're not running multiple brokers in the same JVM. If you aren't running multiple brokers in the same JVM then what are you using the colocated configuration for? The whole point of the colocated configuration is to run multiple brokers in the same JVM (i.e. a primary broker and also a backup broker for another primary in the cluster).
Justin On Mon, Mar 27, 2023 at 11:42 AM Roy Cohen <roy_co...@hotmail.com> wrote: > I don’t believe we are. > > So assume three Virtual Machines on Azure. > > Each VM runs one Artemis broker > > > All of their ha policy section on all three brokers look like that: > > <ha-policy> > <replication> > <colocated> > <max-backups>1</max-backups> > <request-backup>true</request-backup> > > <backup-request-retry-interval>1000</backup-request-retry-interval> > <excludes> > <connector-ref>my-connector</connector-ref> > <connector-ref>thishostname.mydomain</connector-ref> > </excludes> > <master> > <check-for-live-server>true</check-for-live-server> > </master> > <slave> > <allow-failback>true</allow-failback> > <restart-backup>true</restart-backup> > <scale-down/> > </slave> > </colocated> > </replication> > </ha-policy> > > > > > On 27 Mar 2023, at 17:26, Justin Bertram <jbert...@apache.org> wrote: > > We are not running multiple brokers on the same JVM but a single instance > > per VM, so each one has a dedicated JVM and VM > > Based on your previous message I was under the impression you were using > the "colocated" feature. *If* you're using this then you definitely are > running multiple brokers in the same JVM because that's precisely what that > feature does. It runs a primary and a backup broker in the *same JVM*. If > you aren't using a "colocated" configuration then I'm not sure what the > original question is about. Can you clarify? > > > Justin > > On Mon, Mar 27, 2023 at 11:07 AM Roy Cohen <roy_co...@hotmail.com> wrote: > > Hi Justin > > Thank you for your input. > > Sorry, should have been clearer on our setup - We are not running multiple > brokers on the same JVM but a single instance per VM, so each one has a > dedicated JVM and VM > > Thanks > Roy > > > On 27 Mar 2023, at 16:59, Justin Bertram <jbert...@apache.org> wrote: > > I'm not entirely sure if the configuration you want is possible. You > > might > > try using the "group-name" element in the "master" or "slave" element of > "colocated." Only servers with the same group-name will pair together. > > Aside from that I would actually recommend against using colocated > > brokers. > > The original use-case for this functionality was very early cloud > infrastructure where durable, attached storage was not readily available. > However, since then most (if not all) cloud environments support durable > storage separate from the broker so that if the broker goes down a new, > identical broker can be spun-up relatively quickly and attached to the > > same > > storage. This provides functional high availability without the need for > any idle backups or replication of any kind which functionally nullifies > this feature. > > Additionally, it turns out that (surprise!) configuring & running > > multiple > > brokers in the same JVM is difficult and error-prone not to mention the > complication of dynamically coordinating the acquisition of backups in a > running cluster and protecting against split-brain. > > > Justin > > On Thu, Mar 23, 2023 at 7:37 AM Roy Cohen <roy_co...@hotmail.com> wrote: > > Hello everyone > > We have a setup of three Artemis brokers (very old version don’t ask :)) > > We would like to configure the co located backups such that the backups > are sent in this order: > > Broker01 -> Broker02 > Broker02 -> Broker03 > Broker03 -> Broker01 > > > I was reading on co located backups here: > > https://activemq.apache.org/components/artemis/documentation/1.0.0/ha.html > > however not sure I fully understand how to configure the xml section to > achieve that. > > Shall I add excludes in each broker, i.e. > > <colocated> > <excludes> > <connector-ref>...</connector-ref> > </excludes> > > Any help would be appreciated. > > Many thanks in advance ! > > > > > > >
