Hello,

I am not the initial developer of this DNS based multi_notify functionality, 
but it seems to be only initialized as startup.

Then probably the module needs some extension, either an RPC reload method or 
some way of periodically checking the DNS record and updating the server list, 
for example.

Cheers,

Henning

--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>

From: Rajneesh Soni via sr-users <[email protected]>
Sent: Mittwoch, 3. Dezember 2025 16:52
To: Kamailio (SER) - Users Mailing List <[email protected]>
Cc: Rajneesh Soni <[email protected]>
Subject: [SR-Users] Ability to dynamically add node to DMQ

Hi,

I have a Kamailio cluster with multiple nodes sharing information over DMQ. My 
DMQ configuration:
- `notification_address` points to a DNS name that resolves to all cluster nodes
- `multi_notify` is set to 1

**Problem:**
When I add a new node to the cluster, I update the DNS record to include the 
new node's IP. However, DMQ only resolves the `notification_address` at 
startup, so existing nodes don't discover the new peer.

**What I've tried:**
1. Looking for a DMQ reload command (like `dmq.reload`) - doesn't exist
2. `kamcmd cfg.reload` - doesn't re-resolve DMQ notification_address

**Question:**
How can I force DMQ to re-fetch/re-resolve the peer list without restarting 
Kamailio?

Restarting is not an option as it would disrupt active TCP/WebSocket 
connections and ongoing calls.

**Environment:**
- Kamailio version: 6.0.1
- DMQ configuration:
```
modparam("dmq", "server_address",MY_DMQ_SERVER_ADDR)
modparam("dmq", "notification_address", MY_DMQ_NOTIFICATION_ADDR)
modparam("dmq", "multi_notify", 1)
modparam("dmq", "num_workers", 4)
modparam("dmq_usrloc", "enable", 1)
modparam("dmq", "ping_interval", DMQ_PING_INTERVAL)
```
Any suggestions for dynamic peer discovery without restarts?

Regards
Rajneesh
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