[SR-Users] recompute distribution list

[David Villasmil]

When you use hash over username kamailio on reload creates the distribution
lists I.e:

1- server5
2- server3
3- server8

Now, when a call from userB arrives, it will distribute it for instance to
item 2, server3. And any other whose hash is about the same goes to the
same.

Now, If server3 fails, it is just ignored, but the list is not
recalculated, so all of those calls will go to item3 (server8)

On Mon, 8 Aug 2022 at 23:10, David Villasmil <david.villasmil.work at gmail.com>
wrote:

> I’m not using those algorithms, I’m using hash over username.
>
> On Mon, 8 Aug 2022 at 22:34, Henning Westerholt <hw at gilawa.com> wrote:
>
>> Hello,
>>
>>
>>
>> I still might not 100% understand your scenario.
>>
>>
>>
>> If, on the other hand, we recompute (reshuffle) the list ignoring the
>> inactive servers, the traffic would be properly evenly distributed. This
>> is what I’m looking for.
>>
>>
>>
>> But does dispatcher e.g. with a hash based distribution or round-robin
>> does not fulfil this requirement already?
>>
>>
>>
>> Cheers,
>>
>>
>>
>> Henning
>>
>>
>>
>> *From:* David Villasmil <david.villasmil.work at gmail.com>
>> *Sent:* Monday, August 8, 2022 10:30 PM
>> *To:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
>> *Cc:* Henning Westerholt <hw at gilawa.com>
>> *Subject:* Re: [SR-Users] recompute distribution list
>>
>>
>>
>> Difference is if you are distributing based off the username hash and a
>> server goes down, it is simply set as “inactive”, but all calls that were
>> going to that serve will now go to the next in the list, so all those calls
>> will land on the next server basically doubling the traffic.
>>
>>
>>
>> If, on the other hand, we recompute (reshuffle) the list ignoring the
>> inactive servers, the traffic would be properly evenly distributed. This is
>> what I’m looking for.
>>
>>
>>
>>
>>
>> Thanks!
>>
>>
>>
>> On Mon, 8 Aug 2022 at 22:03, Kaufman <bkaufman at bcmone.com> wrote:
>>
>> With either module (Dispatcher or Carrierroute) , what would be the
>> functional difference between ‘reloading’ and ‘recalculating’?
>>
>>
>>
>> Both modules can be controlled via RPC:
>>
>>
>>
>> Dispatcher can be set to send OPTIONS messages to the hosts in it’s
>> tables to monitor endpoint status and dynamically bring the record in and
>> out of service.  Additionally any target’s state can be changed
>> administratively to disabled.  Finally, if you update your datasource,
>> dispatcher can be reloaded.
>>
>>
>>
>> Carrierroute doesn’t have any keepalive options, but supports adding and
>> removing hosts, activating  and deactivating hosts, and replacing hosts.
>> Additionally, if carrierroute’s data is updated (i.e. if reading from
>> database) it can be completely reloaded.
>>
>>
>>
>>
>>
>> *Kaufman*
>>
>>
>>
>> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of *David
>> Villasmil
>> *Sent:* Monday, August 8, 2022 1:39 PM
>> *To:* Henning Westerholt <hw at gilawa.com>
>> *Cc:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
>> *Subject:* Re: [SR-Users] recompute distribution list
>>
>>
>>
>> Hey Henning, thanks for replying. Quick question: Adding (or removing) in
>> memory recalculates without reloading?
>>
>>
>>
>> On Mon, 8 Aug 2022 at 19:47, Henning Westerholt <hw at gilawa.com> wrote:
>>
>> Hello,
>>
>>
>>
>> this is possible with carrierroute by RPC command:
>> https://kamailio.org/docs/modules/5.5.x/modules/carrierroute.html#carrierroute.rpc.replace_host
>> <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkamailio.org%2Fdocs%2Fmodules%2F5.5.x%2Fmodules%2Fcarrierroute.html%23carrierroute.rpc.replace_host&data=05%7C01%7Cbkaufman%40bcmone.com%7Cdd11512c3b7f48deb52508da796d5884%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637955807795997743%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=qtcVZl8iGypaFPL5lQ0UxMPKy1ipi%2B3WmJ1MkgXdNys%3D&reserved=0>
>>
>>
>>
>> With dispatcher you could of course just adding one host two times by
>> some script and reload the module, as a simple idea.
>>
>>
>>
>> Cheers,
>>
>>
>>
>> Henning
>>
>>
>>
>> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of *David
>> Villasmil
>> *Sent:* Monday, August 8, 2022 5:05 PM
>> *To:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
>> *Subject:* [SR-Users] recompute distribution list
>>
>>
>>
>> Hello guys,
>>
>>
>>
>> Is it possible to have dispatcher recompute the distribution list? i.e.
>> one server goes down, all traffic for that server goes to the next one,
>> doubling traffic on that one. Is there a way of, when a host becomes
>> unreachable, recompute the whole list?
>>
>>
>> Regards,
>>
>>
>>
>> David Villasmil
>>
>> email: david.villasmil.work at gmail.com
>>
>> phone: +34669448337
>>
>> --
>>
>> Regards,
>>
>>
>>
>> David Villasmil
>>
>> email: david.villasmil.work at gmail.com
>>
>> phone: +34669448337
>>
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>> --
>>
>> Regards,
>>
>>
>>
>> David Villasmil
>>
>> email: david.villasmil.work at gmail.com
>>
>> phone: +34669448337
>>
> --
> Regards,
>
> David Villasmil
> email: david.villasmil.work at gmail.com
> phone: +34669448337
>
-- 
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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