Hello,

In response to the infrastructure needs of our company's service, I've created a small API that sends SNMP queries to InterSystems to visualize relevant data for retrieval when the infrastructure implements monitoring.

However, I'm experiencing a timeout issue when attempting to collect information using an SNMP walk. Here is the code for my API's SNMP service:

import snmp from "net-snmp";

const options = {
    port: 161,
    retries: 4,
    timeout: 3000,
    transport: "udp4", // Uniquement udp4 et udp6 possible
    trapPort: 162
};

const oids = [ "1.3.6.1.4.1.16563.4.1.15.1.4" ];

export const testWalk = () => {
    const session = snmp.createSession("localhost", "public", options);

    console.log("Session created");

    session.walk(oids[0], null, (error, varbinds) => {
        if (error) {
            console.log("error: " + error);
        } else {
            for (let i = 0; i < varbinds.length; i++) {
                if (snmp.isVarbindError(varbinds[i])) {
                    console.log(snmp.varbindError(varbinds[i]));
                } else {
                    console.log(varbinds[i].oid + " = " + varbinds[i].value);
                }
            }
        }
        session.close()
    });
};

I do have the 'session created' console.log, so I am able to successfully create the SNMP session. However, I encounter this error: 'error: RequestTimedOutError: Request timed out.' The OID corresponds to retrieving irisProdStatus (Current status of all existing productions, of which I have around ten).

I have tried both udp4 and udp6 transport methods. For session creation, I've attempted using localhost as well as 127.0.0.1.

I have InterSystems running in a local Docker container (with the network configured to be on the same 'local network' as my API). Here is my docker-compose file so that you can verify that the correct ports are open :

version: '3.8'
services:
  iris:
    build:
      context: .
      dockerfile: Dockerfile
      target: final
    restart: always
    command: --check-caps false --ISCAgent false
    ports:
      - 161:161/udp
      - 162:162/udp
      - 705:705
      - 1972:1972
      - 52773:52773
      - 53773:53773
    volumes:
      - ./:/home/irisowner/dev
    network_mode: bridge

On the InterSystems portal, I have enabled the %Service_Monitor service and checked the 'Start SNMP agent at system startup' checkbox.

I noticed after some research that Net-SNMP on Linux does not enable TCP port 705 by default, hence this error:

I followed these points from the documentation:

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

However, I still can't start the snmpd service in the Docker container.

Did I miss anything? Is the SNMP library I'm using functioning correctly?

Thanks in advance for your feedback!

Best regards,

Cyril