There were some thoughts about it already:
https://lists.kamailio.org/pipermail/sr-dev/2021-April/062255.html
I think these resulted in
https://github.com/kamailio/kamailio/commit/17e757c91e6e96f6711d9251979d81a792aaef08#diff-bbfcd9caa32baefd8fd963f1c59058e82a89a1868d6ffe8b4e58699f0fd3806a
and
https://github.com/kamailio/kamailio/commit/adf8919f52841800f0cd4528c33679c7ef80f2c5#diff-bbfcd9caa32baefd8fd963f1c59058e82a89a1868d6ffe8b4e58699f0fd3806a


On Wed, Jul 14, 2021, 17:25 Aidar Kamalov <aidar.kamalov@gmail.com> wrote:
Hello,

I have a kamailio cluster with two nodes
kamailio-1.local:  10.101.2.119
kamailio-2.local: 10.101.2.247


with dmq configs:

kamailio-1:
modparam("dmq", "server_address", "sip:MY_IP4_ADDR:5060")
modparam("dmq", "notification_address", "kamailio-2.local:5060")

kamailio-2:
modparam("dmq", "server_address", "sip:MY_IP4_ADDR:5060")
modparam("dmq", "notification_address", "kamailio-1.local:5060")


All works fine, but kamcmd dmq.list_nodes on kamailio-1.local show me:
 {
host: 10.101.2.247
port: 5060
resolved_ip: 10.101.2.247
status: active
last_notification: 0
local: 0
}
{
host: kamailio-1.local
port: 5060
resolved_ip: 10.101.2.119
status: active
last_notification: 0
local: 0
}
{
host: kamailio-2.local
port: 5060
resolved_ip: 10.101.2.247
status: active
last_notification: 0
local: 0
}
{
host: 10.101.2.119
port: 5060
resolved_ip: 10.101.2.119
status: active
last_notification: 0
local: 1
}

and  kamailio-2.local show me:
{
host: kamailio-2.local
port: 5060
resolved_ip: 10.101.2.247
status: active
last_notification: 0
local: 0
}
{
host: 10.101.2.119
port: 5060
resolved_ip: 10.101.2.119
status: active
last_notification: 0
local: 0
}
{
host: kamailio-1.local
port: 5060
resolved_ip: 10.101.2.119
status: active
last_notification: 0
local: 0
}
{
host: 10.101.2.247
port: 5060
resolved_ip: 10.101.2.247
status: active
last_notification: 0
local: 1
}


So there are only two hosts in the cluster, but there are 4 records in dmq.list_nodes. Also in sip trace I can see that kamailio send DMQ messages to itself too (because it ip marked as local: 0 I think).
Is it ok? Is it normal behavior? What should I do to fix it? Should multi_notify and DNS name with 2 A records fix it (and why?)?
--
Aydar A. Kamalov
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