Architecture
Cisco PCF comes with a trace pod to actively monitor and trace the policy execution. The utilities in this pod interact with the Policy Engine pods and the Mongo database pods to trigger and store traces for specific conditions.
The policy tracing and execution analyzer is a three-tier architecture:
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Tier 1—Command-line utilities to manage the policy trace generation and extract policy traces.
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Tier 2—Policy server creation of policy traces using triggers that are defined in Tier 1.
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Tier 3—Storage of the policy traces in a MongoDB.