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Posted to users@activemq.apache.org by Thorsten Kunz <th...@masergy.com> on 2021/04/13 07:22:41 UTC

Artemis: connect with Artemis Core JMS client and ignore tolopogy discovery

Hi there,

I was wondering if it is possible to use the Artemis Java Core JMS client
and connect to a cluster and ignore all topology information.
So lets say I have a cluster with 5 active nodes but in the connection URL
I only specify 3 of them. Right now the client discovers the remaining 2 as
well and connects to all 5. But I need the client to only connect to the 3
I provided in the connection URL.

Thanks in advance

Thorsten

Re: Artemis: connect with Artemis Core JMS client and ignore tolopogy discovery

Posted by Thorsten Kunz <th...@masergy.com>.

Great, appreciate the quick answer.

Thanks

On Tue, Apr 13, 2021 at 10:33 AM Domenico Francesco Bruscino <
bruscinodf@gmail.com> wrote:

> Hi Thorsten,
>
> the ha=true parameter isn't required to connect to a cluster of brokers. It
> is required to enable the automatic failover for clients connected to
> brokers configured with High Avalability[1].
>
> [1]
> https://activemq.apache.org/components/artemis/documentation/latest/ha.html
>
> Regards,
> Domenico
>
>
> On Tue, 13 Apr 2021 at 10:15, Thorsten Kunz <th...@masergy.com>
> wrote:
>
> > Thanks a mill Domenico!
> > One more question about a related topic: is the ha=true parameter
> required
> > to connect to a cluster? The documentation is a little bit ambiguous
> about
> > when to use ha=true. Is it only required if you connect to a HA broker
> with
> > a backup standby broker or is it also supposed to be used if you connect
> to
> > a cluster with only active brokers?
> >
> > Thanks again
> >
> > On Tue, Apr 13, 2021 at 10:11 AM Domenico Francesco Bruscino <
> > bruscinodf@gmail.com> wrote:
> >
> > > Hi Thorsten,
> > >
> > > setting the the `useTopologyForLoadBalancing` parameter to false on the
> > > URL, the ActiveMQ Artemis JMS Client only uses the initial servers
> > > specified in the URL , ie:
> > >
> > >
> >
> `(tcp://server0:61616,tcp://server1:61616)?useTopologyForLoadBalancing=false`
> > >
> > > Regards,
> > > Domenico
> > >
> > > On Tue, 13 Apr 2021 at 09:23, Thorsten Kunz <thorsten.kunz@masergy.com
> >
> > > wrote:
> > >
> > > > Hi there,
> > > >
> > > > I was wondering if it is possible to use the Artemis Java Core JMS
> > client
> > > > and connect to a cluster and ignore all topology information.
> > > > So lets say I have a cluster with 5 active nodes but in the
> connection
> > > URL
> > > > I only specify 3 of them. Right now the client discovers the
> remaining
> > 2
> > > as
> > > > well and connects to all 5. But I need the client to only connect to
> > the
> > > 3
> > > > I provided in the connection URL.
> > > >
> > > > Thanks in advance
> > > >
> > > > Thorsten
> > > >
> > >
> >
>
[image: Twitter] <https://twitter.com/masergy>

Re: Artemis: connect with Artemis Core JMS client and ignore tolopogy discovery

Posted by Domenico Francesco Bruscino <br...@gmail.com>.

Hi Thorsten,

the ha=true parameter isn't required to connect to a cluster of brokers. It
is required to enable the automatic failover for clients connected to
brokers configured with High Avalability[1].

[1]
https://activemq.apache.org/components/artemis/documentation/latest/ha.html

Regards,
Domenico


On Tue, 13 Apr 2021 at 10:15, Thorsten Kunz <th...@masergy.com>
wrote:

> Thanks a mill Domenico!
> One more question about a related topic: is the ha=true parameter required
> to connect to a cluster? The documentation is a little bit ambiguous about
> when to use ha=true. Is it only required if you connect to a HA broker with
> a backup standby broker or is it also supposed to be used if you connect to
> a cluster with only active brokers?
>
> Thanks again
>
> On Tue, Apr 13, 2021 at 10:11 AM Domenico Francesco Bruscino <
> bruscinodf@gmail.com> wrote:
>
> > Hi Thorsten,
> >
> > setting the the `useTopologyForLoadBalancing` parameter to false on the
> > URL, the ActiveMQ Artemis JMS Client only uses the initial servers
> > specified in the URL , ie:
> >
> >
> `(tcp://server0:61616,tcp://server1:61616)?useTopologyForLoadBalancing=false`
> >
> > Regards,
> > Domenico
> >
> > On Tue, 13 Apr 2021 at 09:23, Thorsten Kunz <th...@masergy.com>
> > wrote:
> >
> > > Hi there,
> > >
> > > I was wondering if it is possible to use the Artemis Java Core JMS
> client
> > > and connect to a cluster and ignore all topology information.
> > > So lets say I have a cluster with 5 active nodes but in the connection
> > URL
> > > I only specify 3 of them. Right now the client discovers the remaining
> 2
> > as
> > > well and connects to all 5. But I need the client to only connect to
> the
> > 3
> > > I provided in the connection URL.
> > >
> > > Thanks in advance
> > >
> > > Thorsten
> > >
> >
>
>
> --
>
> <http://www.masergy.com> <https://www.masergy.com>
> <https://www.masergy.com>[image:
> Masergy Logo] <https://www.masergy.com>
>
> Thorsten Kunz
>
> Software Architect
>
> p: 3108957480
>
> <https://www.linkedin.com/ADDYOURIDHERE/>
> <https://www.linkedin.com/company/16604/>
> <https://www.linkedin.com/company/16604/>[image: LinkedIn]
> <https://www.linkedin.com/company/16604/>
> <https://www.twitter.com/ADDYOURTWITTERHANDLE>
> <https://twitter.com/masergy>[image:
> Twitter] <https://twitter.com/masergy>
>

Re: Artemis: connect with Artemis Core JMS client and ignore tolopogy discovery

Posted by Thorsten Kunz <th...@masergy.com>.

Thanks a mill Domenico!
One more question about a related topic: is the ha=true parameter required
to connect to a cluster? The documentation is a little bit ambiguous about
when to use ha=true. Is it only required if you connect to a HA broker with
a backup standby broker or is it also supposed to be used if you connect to
a cluster with only active brokers?

Thanks again

On Tue, Apr 13, 2021 at 10:11 AM Domenico Francesco Bruscino <
bruscinodf@gmail.com> wrote:

> Hi Thorsten,
>
> setting the the `useTopologyForLoadBalancing` parameter to false on the
> URL, the ActiveMQ Artemis JMS Client only uses the initial servers
> specified in the URL , ie:
>
> `(tcp://server0:61616,tcp://server1:61616)?useTopologyForLoadBalancing=false`
>
> Regards,
> Domenico
>
> On Tue, 13 Apr 2021 at 09:23, Thorsten Kunz <th...@masergy.com>
> wrote:
>
> > Hi there,
> >
> > I was wondering if it is possible to use the Artemis Java Core JMS client
> > and connect to a cluster and ignore all topology information.
> > So lets say I have a cluster with 5 active nodes but in the connection
> URL
> > I only specify 3 of them. Right now the client discovers the remaining 2
> as
> > well and connects to all 5. But I need the client to only connect to the
> 3
> > I provided in the connection URL.
> >
> > Thanks in advance
> >
> > Thorsten
> >
>


-- 

<http://www.masergy.com> <https://www.masergy.com>
<https://www.masergy.com>[image:
Masergy Logo] <https://www.masergy.com>

Thorsten Kunz

Software Architect

p: 3108957480

<https://www.linkedin.com/ADDYOURIDHERE/>
<https://www.linkedin.com/company/16604/>
<https://www.linkedin.com/company/16604/>[image: LinkedIn]
<https://www.linkedin.com/company/16604/>
<https://www.twitter.com/ADDYOURTWITTERHANDLE>
<https://twitter.com/masergy>[image:
Twitter] <https://twitter.com/masergy>

Re: Artemis: connect with Artemis Core JMS client and ignore tolopogy discovery

Posted by Domenico Francesco Bruscino <br...@gmail.com>.

Hi Thorsten,

setting the the `useTopologyForLoadBalancing` parameter to false on the
URL, the ActiveMQ Artemis JMS Client only uses the initial servers
specified in the URL , ie:
`(tcp://server0:61616,tcp://server1:61616)?useTopologyForLoadBalancing=false`

Regards,
Domenico

On Tue, 13 Apr 2021 at 09:23, Thorsten Kunz <th...@masergy.com>
wrote:

> Hi there,
>
> I was wondering if it is possible to use the Artemis Java Core JMS client
> and connect to a cluster and ignore all topology information.
> So lets say I have a cluster with 5 active nodes but in the connection URL
> I only specify 3 of them. Right now the client discovers the remaining 2 as
> well and connects to all 5. But I need the client to only connect to the 3
> I provided in the connection URL.
>
> Thanks in advance
>
> Thorsten
>