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Overview

Control Plane can collect custom metrics from your workload by having your application emit a Prometheus formatted list of metrics at a path and port of your choosing. The port can be different than the one serving traffic. Each container in a workload can be configured with metrics.
The convention is to use the path /metrics, but any path can be used.
Sample output from the metrics endpoint: 
MY_COUNTER 788
MY_COUNTER_2 123
NUM_USERS 2
NUM_ORDERS 91
The platform will scrape all the replicas in the workload every 30 seconds with a 5 second timeout. Metric names with the prefix cpln_ will be ignored by the scrapping process. The collected metrics can be viewed by clicking the Metrics link on the workload page within the console. Clear any existing query and enter the name of the metric. Click Run Query to execute. The time-series displayed will include these labels:
  • org
  • gvc
  • location
  • provider
  • region
  • cluster_id
  • replica

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Configuring Custom Metrics Scraping

  1. In the UI, navigate to Workloads in the selected GVC and select the workload for which you want to scrape metrics.
  2. Select the appropriate container name under Containers, then choose Metrics.
  3. Configure the Path and Port where the container serves metrics, then save the settings.
  4. The workload will automatically redeploy to apply the changes. Metrics will be collected once the rollout is complete.
All objects in the UI can be exported to YAML, JSON, or Terraform formats by clicking Actions and selecting Export.
For the configuration schema to use with the API, please refer to the API Reference in the documentation, under the Workload section.
For Terraform documentation, click here. To create dashboards for collected custom metrics, please refer to the Grafana documentation.

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Filter metrics

If you wish to filter which metrics are collected from your workload, you can specify regex patterns in the dropMetrics field.
YAML
kind: workload
spec:
  containers:
    - name: my-container
      metrics:
        path: /metrics
        port: 9090
        dropMetrics:
          - '^go_.*' # Drop all go runtime metrics
          - '^process_.*' # Drop all process metrics
          - 'MY_UNWANTED_METRIC' # Drop a specific metric