How to initiate Discovery health rules

[pavansakala]

How to initiate Discovery health rules in ServiceNow

[pratikjagtap]

Hi @pavansakala ,

Discovery Health Rules are checks that run after Discovery scans, helping validate:

• CI creation success

• Duplicate CI detection

• IP range issues

• Pattern/probe failures

• Classification problems

Health Rules Run Automatically After a Discovery

• When you run Discovery on a schedule or manually via a Quick Discovery, ServiceNow automatically triggers the health rules based on the configuration.

• No need to manually call them unless you're troubleshooting or testing.

Health Rules Run Automatically After a Discovery

• When you run Discovery on a schedule or manually via a Quick Discovery, ServiceNow automatically triggers the health rules based on the configuration.

• No need to manually call them unless you're troubleshooting or testing.

var dhm = new DiscoveryHealthManager();
dhm.runHealthRules();

Steps to View / Manage Discovery Health Rules

1. Go to Discovery > Discovery Health > Health Rules

2. You’ll see a list of out-of-the-box (OOB) rules like:

   • Duplicate Windows Servers

   • Misclassified Linux devices

   • Devices with missing serial numbers

3. You can:

   • Activate/deactivate rules

   • Customize conditions

   • Create new ones using standard filters

Each rule defines:

• What CI class it targets (e.g., cmdb_ci_win_server)

• What condition it checks for

• Whether it’s critical

To view the outcomes of the health rules:

1. Go to Discovery > Discovery Health > Health Results

2. Filter by:

   • Discovery run

   • Timeframe

   • CI class or IP range

These results help you clean up your CMDB and improve Discovery quality.

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🧪 Use in Dashboards or Alerts

You can display Discovery Health Rule results in:

• CMDB Health Dashboards

• Discovery Reports

• Notifications (if you want to alert teams when critical rules are triggered)

If my response helped, please hit the 👍Thumb Icon and accept the solution so that it benefits future readers.

Regards,
Pratik