Access Log Fields

Logs only server errors with a lean field set

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Category: Practical
Task: Logs only server errors with a lean field set

Prerequisites: The product runtime and any backend services referenced by this configuration.

Run it: Use ghcr.io/praxis-proxy/praxis:0.7.2 and follow the first reverse-proxy tutorial to mount and start the configuration.

This configuration comes from the selected release. The example has not been run here; external services are not bundled.

Download the source file.

# Access Log Field Selection
#
# Logs only server errors with a lean field set. Fast successful
# requests are not emitted. Use RUST_LOG=info to see output.
#
listeners:
  - name: default
    address: "127.0.0.1:8080"
    filter_chains:
      - main

filter_chains:
  - name: main
    filters:
      - filter: request_id

      - filter: access_log
        sample_rate: 1.0
        fields:
          - method
          - path
          - status
          - duration_ms
          - request_id
        conditions:
          status_classes: [5xx]

      - filter: router
        routes:
          - path_prefix: "/ok"
            cluster: backend
          - path_prefix: "/error"
            cluster: error_backend

      - filter: load_balancer
        clusters:
          - name: backend
            endpoints:
              - "127.0.0.1:3000"
          - name: error_backend
            endpoints:
              - "127.0.0.1:3001"

insecure_options:
  allow_private_endpoints: true # example proxies to local backends