Resolve the "Unable to Reach Inventory Process" Issue in EPNM 5.X

Introduction

This document describes the steps to resolve the "Unable to Reach Inventory Process" error in Evolved Programmable Network Manager (EPNM) 5.X.

Prerequisites

Requirements

Cisco recommends that you have knowledge of these topics:

• EPNM
• How to connect to the EPNM Application Server GUI and CLI with shell access

Components Used

The information in this document is based on EPNM with software Version 5.x.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Problem

Unable to add new devices in EPNM with the pop-up message "Unable to Reach Inventory Process" in EPNM 5.X application.

Solution

CLI Method

The restart of the Inventory discovery process alone from the EPNM Application server CLI would help resolve the issue quickly.

The commands to disable and enable the inventory discovery process are:

ade # /opt/CSCOlumos/bin/epnmlcm.sh status

NAME                             ENABLED         STATUS             STATUS TIME
service-discovery-process        true            REACHABLE          2022-01-28 16:07:49
inventory-discovery-process      true            REACHABLE          2022-01-28 16:25:57
epnm-mcn                         true            REACHABLE          2022-01-28 16:03:49

Since the issue is with the Inventory discovery process, that process alone needs to be disabled and then enabled with these commands:

ade#/opt/CSCOlumos/bin/epnlcm.sh disable inventory-discovery-process
ade#/opt/CSCOlumos/bin/epnlcm.sh enable inventory-discovery-process

GUI Method

The restart of the Inventory discovery process alone from the EPNM Application server GUI resolves the issue quickly. 

Step 1. Navigate to the NCS Diagnostics web page - https://<EPNM Application Server IP Address>/webacs/ncsDiag.do and choose Process LCM.

          The Process LCM web page opens as shown in this image:

Step 2. Click Stop in order to stop the Inventory discovery process. Once the process is stopped the Start button becomes active. Then click Start in order to start the Inventory discovery process.

Note: The Stop button is not highlighted unless the flag lcm.rest.operation.write is set to yes in the /opt/CSCOlumos/conf/epnm-lcm.properties file. In order to make the changes effective, the application must be restarted.