Thank you all for the suggestions!. I will look into them. As we have the UAs connecting with TLS I can understand that there are many issues to handle on an unexpected shutdown of a kamailio server and keep the TLS sessions alive.

Στις Τετ, 15 Σεπ 2021 στις 8:22 π.μ., ο/η Patrick Wakano <pwakano@gmail.com> έγραψε:

But, my main question is about the DMQ on two Kamailio nodes and what happens in case one of them reloads. Are the dialogs and useloc synced automatically on reload? Is there a template config to read about this?


Hi, unless there are new development on version 5.5 that I am not aware, on version 5.4, the dialogs do not sync automatically, so you need to save them on DB and read from DB on startup (https://kamailio.org/docs/modules/5.4.x/modules/dialog.html#dialog.p.db_skip_load). The usrloc will sync without the need of a DB https://kamailio.org/docs/modules/5.4.x/modules/dmq_usrloc.html#usrloc_dmq.p.sync


On Tue, 14 Sept 2021 at 22:44, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

for the records, there is a minimal config example in the repo:

  * https://github.com/kamailio/kamailio/blob/master/misc/examples/mixed/kamailio-minimal-anycast.cfg

Maybe it is useful for a starting point, although I think it targets use of UDP.

Cheers,
Daniel

On 13.09.21 08:46, Markus Monka wrote:
Hi,

we did some testing with ipvs but unfortunately where not been able to pursue it further.
Today we use NAPTR/SRV Records for balancing to several TCP Loadbalancers.

Best Regards
 Markus

On Mon, Sep 13, 2021 at 8:19 AM Henning Westerholt <hw@skalatan.de> wrote:

Hello,

 

I would suggest having a look at the presentation from Armen, and probably others from past KamailioWorld:

 

https://www.youtube.com/c/KamailioWorld/search?query=anycast

 

Cheers,

 

Henning

 

--

Henning Westerholt – https://skalatan.de/blog/

Kamailio services – https://gilawa.com

 

From: sr-users <sr-users-bounces@lists.kamailio.org> On Behalf Of Angelo Sipper
Sent: Sunday, September 12, 2021 11:44 AM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Best practice for Kamailio "cluster" front for many TLS connections

 

Sorry Fred,

 

I believe, my question was wrongly asked.

The correct question would be, Is there a guide for Kamailio and Anycast that anyone could point me to read?

 

But, my main question is about the DMQ on two Kamailio nodes and what happens in case one of them reloads. Are the dialogs and useloc synced automatically on reload? Is there a template config to read about this?

 

Kind Regards,

Angelo

 

Στις Κυρ, 12 Σεπ 2021 στις 1:30 π.μ., ο/η Fred Posner <fred@palner.com> έγραψε:

To be clear here, this is the kamailio list and you’ve been referencing opensips documentation. 

-- Fred

(via mobile)

Matrix: @fred:matrix.lod.com

 



On Sep 11, 2021, at 5:46 PM, Angelo Sipper <sippro97@gmail.com> wrote:



HI,

 

Thanks for all the suggestions. I will look into glb-director and I will come back in case I need more help.

As I understand for same DC and two Kamailio's on active/standby with keepalived is fine, at least for the load we are expecting now.

 

Now one question on DMQ. Up today with the one only Kamailio we are using the dialog db_mode 1 to have all dialogs in db, in order not to loose the dialogs in case of reload. When we will have 2 Kamailio's with DMQ sync for all dialogs, in case of one Kamailios reloads it will get all active dialogs from the other Kamailio without the need to have the DB to handle this and also delay the system. Is this the correct approach?

 

Last, do you know any updated doc for Anycast  - Kamailio like the one here for the older version 2.4 ?

 

Kind Regards,

Angelo

 

 

Στις Σάβ, 11 Σεπ 2021 στις 11:03 μ.μ., ο/η Henning Westerholt <hw@skalatan.de> έγραψε:

Hello Angelo,

 

it is possible to use Kamailio with an anycast setup, there are two talks in the last years KamailioWorld conference about more details.

 

But if we are only talking about several thousand clients, it’s not needed for a start. Its certainly possible to operate this just with one front-end Kamailio in an activate/passive setup, many people do this.

E.g., look to this (rather old) performance tests, 1.000.000 contacts with TLS on one server http://sip-router.org/wiki/performance/v3.0-capacity

 

Kamailio has no cluster module, you probably want to investigate the DMQ module which offers clustering capabilities.

 

Cheers,

 

Henning

 

 

--

Henning Westerholt – https://skalatan.de/blog/

Kamailio services – https://gilawa.com

 

From: sr-users <sr-users-bounces@lists.kamailio.org> On Behalf Of Angelo Sipper
Sent: Saturday, September 11, 2021 8:52 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Best practice for Kamailio "cluster" front for many TLS connections

 

Hi Fred,

 

Thanks for the suggestions.

I have been looking to all these presentations mostly from Rasvan but, he mostly suggesting clusterer module combined with anycast which I cannot locate on current version 5.x. Can you help me on what is the replacement for this? 

 

Kind Regards,

Angelo

 

Στις Σάβ, 11 Σεπ 2021 στις 6:04 μ.μ., ο/η Fred Posner <fred@palner.com> έγραψε:

On 9/11/21 10:11 AM, Angelo Sipper wrote:
> Hello,
>
> We are thinking to use kamailio to fully support our current voip service.
> [snip] What would be the best kamailio
> module and topology as solution to this requirement?
>
When designing a Kamailio deployment for several thousand plus clients,
there are many factors to consider... including network topology, future
growth plans, high availability, redundancy, etc.

The quick answer top your question is: It depends.

There are many discussions and presentations made over the years
including some posted to the kamailioworld youtube channel
(youtube,com/c/kamailioworld) as well as slides regarding large scale
deployments (such as 1&1).

With best regards,

Fred Posner | palner.com
Matrix: @fred:matrix.lod.com
o: +1 (212) 937-7844


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--
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Markus Monka - mmonka@sipgate.de
Telefon: +49 (0)211-63 55 55-23
Telefax: +49 (0)211-63 55 55-22

sipgate GmbH - Gladbacher Str. 74 - 40219 Düsseldorf
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