Example 2: Reordering rules when simulating a proposed ILM policy

This example shows how you can reorder rules to change the results when simulating a policy.

About this task

In this example, the "Demo" policy is being simulated. This policy, which is intended to find objects that have series=x-men user metadata, includes three rules, as follows:

• The first rule, PNGs, filters for key names that end in .png.
• The second rule, X-men, applies only to objects in a specific tenant account and filters for series=x-men user metadata.
• The last rule is the default rule, Make 2 Copies, which will match any objects that do not match the first two rules.

1. After adding the rules and saving the policy, click Simulate.
2. In the Object field, enter the S3 bucket/key or the Swift container/object for a test object, and click Simulate.
   The Simulation Results appear, showing that the Havok.png object was matched by the PNGs rule.
   
   However, the rule that the Havok.png object was meant to test was the X-men rule.
3. To resolve the issue, reorder the rules.
   1. Click Finish to close the Simulate ILM Policy page.
   2. Click Edit to edit the policy.
   3. Drag the X-men rule to the top of the list.
      
      
      
   4. Click Save.
4. Click Simulate.
   The objects you previously tested are re-evaluated against the updated policy, and the new simulation results are shown. In the example, the Rule Matched column shows that the Havok.png object now matches the X-men metadata rule, as expected. The Previous Match column shows that the PNGs rule matched the object in the previous simulation.
   
   

   Note: If you stay on the Configure Policies page, you can re-simulate a policy after making changes without needing to re-enter the names of the test objects.