Documentation forLog Analyzer

Create custom log-processing rules

On the Log Processing Configuration page, you can create custom rules to complement the standard, out-of-the-box LA rule sets. You can define rule conditions to identify a specific log entry, and then establish subsequent actions, such as adding event tags, executing commands, and discarding log entries.

The pre-defined Rule Policy groups organize rule policies based on the message source and determine the rule policy evaluation order. The Processing Policies pane is organized into the following policy groups:

  • Log Files (Log Analyzer only)
  • Syslog
  • Traps
  • VMware Events
  • Windows Events (Log Analyzer only)
  • Global Pre-processing: Evaluated before log-specific and global post-processing rule policies
  • Global Post-processing: Evaluated after all log-specific rule policies
Group Message Type Evaluation Order
Global Pre-processing All messages 1
Log Files (Log Analyzer only) Windows flat file messages 2
Syslog Syslog messages 3
Traps Trap messages 4
VMware Events VMware event messages 5
Windows Events (Log Analyzer only) Windows event messages 6
Global Post-processing All messages 7
  1. On the Log Viewer toolbar, click Configure Rules.

  2. In the Processing Policies pane, click to expand a policy group, and then click My Custom Rules.
  3. Click Create New Rule.

  4. Enter a descriptive name for the rule, and then click Next.

  5. Select your source computers.

    You can choose to trigger this alert from all sources, or specify conditions and values for one or more sources.

  1. Define your log entry rule conditions and values, and then click Next.

    The log entry conditions vary by log source type. In the example below, an incoming SNMP Trap message meeting specified Varbind element with OID and name criteria will trigger the designated alert action.

  2. Select one or more log entry actions.

  3. Integrate an alert action, and then click Next.
  4. Review your rule summary, and then click Save to create the rule. To edit your rule conditions and actions, click Back.
  5. After you create one or more rules, you can then edit, enable, or disable each rule.
  6. To return to the Log Viewer, navigate to My Dashboards > Logs > Log Viewer.

Add custom rule actions

You can add one or more of the following actions to any custom rule:

  • Tag the entry.
    1. In the Rule Actions pane, click Add an Action.
    2. Select Tag the Entry, and then click Configure Action.
    3. Select one or more of the pre-defined log tags, and then click Done.


      Click Create Another Tag, enter a custom tag name, select a tag color, and then click Done.

  • Forward the entry: Send the entry to another system for further processing.
  • Run an external program.
    1. In the Rule Actions pane, click Add an Action.
    2. Select Run an External Program, and then click Configure Action.
    3. Enter the program to run, command line arguments (optional), and then click Done.

      Find a list of external program variables here.

  • Flag for discard: The log entry is not saved to the database, but subsequent rule actions are still applied.
  • Stop processing rules: Stops additional rule processing for the active log entry.