5 Jul
2016
5 Jul
'16
7:36 p.m.
Hello,
I am beginning to front my Asterisk cluster with Kamailio and so far my
biggest issue is the complete lack of quick-start-like documentation for
this. Is there any place I can get a very simple HA configuration (telling
me where the config files are, for starters, is a good thing) for Kamailio
with the following features:
(a) Support an arbitrarily large number of Asterisk servers (say, upto 10).
(b) Offload SIP registration to a realtime/mysql DB used by the PBXs.
Please also let me know if I should have to change my Asterisk PBX config
in any way for this to happen.
On a very related note, while I appreciate the fact that you need to
_really_ understand SIP to configure Kamailio, it should be possible to get
this setup by just running a script or GUI. It is difficult to find
information on how to load balance multiple PBXs behind Kamailio.
Thanks!
5 Jul
5 Jul
7:54 p.m.
New subject: Simple Kamailio configuration for Asterisk load balancing?
I think you need to radically readjust your expectations. What you're
asking for, once all of the requirements are tallied up ...
- Load balancing across Asterisk servers
- SIP registration to RealTime DB
- HA configuration
... is not simple, and doesn't lend itself to a "quick start" guide.
You'll want to start with the 'dispatcher' module, which provides the
load distribution part, and go from there. There are plenty of examples
of how to use it online, including the dispatcher module docs themselves:
http://www.kamailio.org/docs/modules/4.4.x/modules/dispatcher.html#dispatch…
Also, this is a rather broad question that demands a lot from your
audience, and certainly cannot be accommodated in a "quick start" guide:
Please also let me know if I should have to change my
Asterisk PBX
config
The answer there is "know how to administer Asterisk", and there are no
shortcuts around that.
Speaking of shortcuts: Kamailio is a fairly low-level tool designed for
situations in which fine-grained message-level control is needed over
SIP scenarios. When you say "it should be possible to get this setup by
just running a script or GUI", you are speaking from a very presumptuous
position.
Unless you're willing to put in the time and learn how to use all the
pieces you've chosen to use, it sounds like you may be best served by a
turn-key load balancer product or appliance of some sort, which would
allow you point-and-click your way to happiness--at the expense of the
integration paths you're after (RealTime et al).
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
10:57 p.m.
Thanks for your note, Alex, but asking for a reasonable admin is hardly
presumptuous; indeed saying that it is presumptuous is very questionable. I
have had to do that myself having designed telco architecture and products
in painful (SW) detail for over a decade now, and I have seen boxes far
more complex and less complex all of which need OAM (invariably GUI based)
which the customer won't touch without. We all have different ways by which
we use products...
That said, you are saying "dammit, spend some time with this thing."
Point taken.
Your other comment re: turn-key LB is something I will investigate. Thanks
for your time though.
On Tue, Jul 5, 2016 at 1:54 PM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
I think you need to radically readjust your
expectations. What you're
asking for, once all of the requirements are tallied up ...
- Load balancing across Asterisk servers
- SIP registration to RealTime DB
- HA configuration
... is not simple, and doesn't lend itself to a "quick start" guide.
You'll want to start with the 'dispatcher' module, which provides the load
distribution part, and go from there. There are plenty of examples of how
to use it online, including the dispatcher module docs themselves:
http://www.kamailio.org/docs/modules/4.4.x/modules/dispatcher.html#dispatch…
Also, this is a rather broad question that demands a lot from your
audience, and certainly cannot be accommodated in a "quick start" guide:
Please also let me know if I should have to
change my Asterisk PBX
config
The answer there is "know how to administer Asterisk", and there are no
shortcuts around that.
Speaking of shortcuts: Kamailio is a fairly low-level tool designed for
situations in which fine-grained message-level control is needed over SIP
scenarios. When you say "it should be possible to get this setup by just
running a script or GUI", you are speaking from a very presumptuous
position.
Unless you're willing to put in the time and learn how to use all the
pieces you've chosen to use, it sounds like you may be best served by a
turn-key load balancer product or appliance of some sort, which would allow
you point-and-click your way to happiness--at the expense of the
integration paths you're after (RealTime et al).
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
11:04 p.m.
New subject: Simple Kamailio configuration for Asterisk load balancing?
On 07/05/2016 04:57 PM, Tickling Contest wrote:
Thanks for your note, Alex, but asking for a
reasonable admin is hardly
presumptuous; indeed saying that it is presumptuous is very
questionable. I have had to do that myself having designed telco
architecture and products in painful (SW) detail for over a decade now,
and I have seen boxes far more complex and less complex all of which
need OAM (invariably GUI based) which the customer won't touch without.
We all have different ways by which we use products...
Right. The presumption here is precisely in the fact that Kamailio is
that kind of product.
Kamailio is not a finished application like Asterisk or Freeswitch
where, if you just enable the right option and configure it real quick,
you'll get canned functionality. I always say it's more akin to an SDK;
it's got some building blocks, but it's up to you to wire them together.
Above all else, it's an intra-industrial toolkit for communications
specialists; it's not designed for end-customers or even ordinary
operations departments, so your point about the necessity of a GUI for
those people doesn't apply.
For obvious reasons related to mindshare and "market share", there are
efforts to make Kamailio more accessible to a larger audience of people
with relatively pedestrian needs. For that, there exists, for example,
the SIREMIS GUI:
http://siremis.asipto.com/
This UI can edit the underlying database tables that back modules like
dispatcher and usrloc/registrar, and can also expose some Kamailio
operational stats.
However, SIREMIS will certainly not write the logic so that you can
build large-scale HA infrastructure without having to learn anything. :-)
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
11:08 p.m.
New subject: Simple Kamailio configuration for Asterisk load balancing?
PS.
As with many open-source projects with some reach, there's no shortage
of commercial products and options that will allow you to do exactly
what you're asking for.
For example, it can be seen that ASIPTO put out a Kamailio-based load
balancing solution:
https://www.asipto.com/sw/solutions/
And likewise, there are many other companies involved in the Kamailio
space that either have a finished load-balancer built on top of
Kamailio, or can provide you with one on a consulting basis:
https://www.kamailio.org/w/business-directory/
My initial response - that you were being presumptuous - was to your
coming in here and telling everyone what the project is and how it
should work. :-) I am telling you, in so many words, that the project is
what it is, and probably doesn't have the same use-cases in mind as you do.
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
6 Jul
6 Jul
9:49 a.m.
On 05 Jul 2016, at 19:36, Tickling Contest
<tickling.contest(a)gmail.com> wrote:
Hello,
I am beginning to front my Asterisk cluster with Kamailio and so far my biggest issue is
the complete lack of quick-start-like documentation for this. Is there any place I can get
a very simple HA configuration (telling me where the config files are, for starters, is a
good thing) for Kamailio with the following features:
(a) Support an arbitrarily large number of Asterisk servers (say, upto 10).
(b) Offload SIP registration to a realtime/mysql DB used by the PBXs.
Please also let me know if I should have to change my Asterisk PBX config in any way for
this to happen.
On a very related note, while I appreciate the fact that you need to _really_ understand
SIP to configure Kamailio, it should be possible to get this setup by just running a
script or GUI. It is difficult to find information on how to load balance multiple PBXs
behind Kamailio.
While I haven’t got full configurations - I do have some notes published on things you
need to consider
when doing this - especially the offloading of registrations.
An old but still valid presentation (from 2010):
http://www.slideshare.net/oej/astricon-2010-scaling-asterisk-installations
General presentations:
http://www.slideshare.net/oej/why-is-kamailio-so-different-an-introduction
<http://www.slideshare.net/oej/why-is-kamailio-so-different-an-introduction>
http://www.slideshare.net/oej/kamailio-a-quick-introduction
<http://www.slideshare.net/oej/kamailio-a-quick-introduction>
You have a lot of examples in the dispatcher module README that will help you.
Regards,
/O
2873
days inactive
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days old
5 comments
3 participants
participants (3)
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Alex Balashov -
Olle E. Johansson -
Tickling Contest