Alarm generating for devices that are in maintenance mode

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• CA Unified Infrastructure Management On-Premise (Nimsoft / UIM)
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)

Issue/Introduction

Alarms for devices that are still in maintenance mode are not being suppressed.

Environment

• DX UIM 23.4.3, 23.4.4
• maintenance_mode 23.4.3

Cause

Incorrect or missing core probe parameters in configuration files.

Resolution

Add or update the keys noted in green as described below :

1. ems
   • Via raw configuration or cfg file :
     • In the <setup> section, add/update the key: maintenance_mode_cmd_timeout = 300000. The value is in ms
   • Deactivate ems probe
   • Wait for port and pid to drop
   • Activate ems probe
     
     
2. nas
   • Via raw configuration or cfg file:
     
     • In the <setup> section, add/update the key: maint_max_resp_time = 300. The value is in seconds
     • In the <setup> section, add/update the key: registrationIntervalLookAheadMinutes = 60. The value is in minutes
   • Deactivate nas probe
   • Wait for port and pid to drop
   • Activate nas probe

 

Additional Information

• registrationIntervalLookAheadMinutes
  This key determines how often the nas will attempt to re-register with the maintenance_mode probe.
  This key is set to 30 minutes by default, but if you have a large number of active schedules defined which do not get change frequently, then you can increase the re-registration interval as well to 60 or even 90 minutes.
  
  
• maint_max_resp_time
  This setting can be added/configured to override the default timeout period. The default period is 20 seconds for re-registration with the maintenance_mode probe.
  Also this setting fixes an issue where the nas intermittently alarms through for devices that are in maintenance when the maintenance_mode probe fails to respond to the re-registration request from the nas within the default timeout period.