[SR-Users] Udp errors on High Availability Setup

[Arnd Schmitter]

Hello,

you can give each Kamailio an own address on top of the HA addresses and setup dispatcher in config to use this address on default for probing. Small benefit: even if both HA addresses are running on one node only, pinging is still working.

https://kamailio.org/docs/modules/5.2.x/modules/dispatcher.html#dispatcher.p.ds_default_socket

Instance 1:
listen=udp:Node1
listen=udp:HA_Address1
listen=udp:HA_Address2
modparam("dispatcher", "ds_default_socket", "udp:Node1")

Instance 2:
listen=udp:Node2
listen=udp:HA_Address1
listen=udp:HA_Address2
modparam("dispatcher", "ds_default_socket", "udp:Node2")

BR
Arnd


On Mi, Mai 08, 2019 um 12:23:21, Duarte Rocha wrote:
> Thank you for your answer.
> 
> I forgot to mention, the Probing is being done by the dispatcher module and
> this is a Kamailio that works without registration
> 
> A quarta, 8/05/2019, 13:04, Duarte Rocha <duarterocha91 at gmail.com> escreveu:
> 
> > Greetings,
> >
> > I have two Machines with Kamailio in a High Availability  (HA)
> > configuration. Both machines are active and processing calls and both have
> > one HA IP that can jump to the other machine in case of failure.
> >
> > I also have probing for NAPs configured with each IP as the socket.
> >
> > So, in each machine i have this configuration :
> >
> > listen=udp:HA_Address1
> > listen=udp:HA_Address2
> >
> > NAP 1 being probed from socket HA_Address1
> > NAP 1 being probed from socket HA_Address2
> >
> > I also have /proc/sys/net/ipv4/ip_nonlocal_bind with value 1.
> >
> > Everything works correctly with this configuration. However when the
> > probing is sent for the NAP' my logs get filled with the same error
> > messages.
> >
> > udp_send(): sendto(sock, buf: 0x7f2d4c91fa18, len: 340, 0, dst:
> > (xxx.xxx.xxx.xxx:xxx), tolen: 16) - err: Invalid argument (22)
> > CRITICAL: <core> [core/udp_server.c:602]: udp_send(): invalid
> > sendtoparameters#012one possible reason is the server is bound to localhost
> > and#012attempts to send to the net
> > ERROR: tm [../../core/forward.h:219]: msg_send_buffer(): udp_send failed
> >
> >
> > The error happens because it is trying to probe a NAP using a socket that
> > isn't active at the moment in the machine.
> >
> > Is there a way for this error not to be logged or be disabled without
> > reducing Log Level to suppress CRITICAL errors?
> > I think this is a standard High Availability configuration. Is there some
> > setting that can disable this kind of errors?
> >
> > Best Regards,
> >
> > Duarte Rocha
> >

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Arnd Schmitter

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