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Smoke Test

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A simple service that will execute HTTP requests on demand for the purposes of pre-deployment testings. Think hey but with remote request URLs, slack and a few other tweaks.

This was developed to run during Flagger blue/green deployments updates.

Usage

Example: http://localhost:8001/smoke-test?HOST=localhost&PORT=8123&PROTO=http&DURATION=10s&SERVICE=trace-asset-v0

Params:

  • HOST: the hostname or IP where the target service is running
  • PORT: the port of the target service
  • PROTO: http/https
  • DURATION: how long to run the tests: 1m 90s etc
  • SERVICE: the name of the service --> translated into the name of the CSV file in your repo

Sample canary that uses this:

apiVersion: flagger.app/v1beta1
kind: Canary
metadata:
  name: api-canary
  namespace: api
spec:
  targetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: api-deployment
  service:
    port: 8124
  #this is greatly reduced for dev
  analysis:
    interval: 10s
    threshold: 3
    maxWeight: 40
    stepWeight: 10
    metrics:
      - name: request-success-rate
        thresholdRange:
          min: 99
        interval: 1m
      - name: request-duration
        thresholdRange:
          max: 500
        interval: 30s
    webhooks:
      - name: load-test
        type: rollout
        url: http://load-generator.api.svc.cluster.local:8001/smoke-test?HOST=asset-api-deployment-canary.climatetrace.svc.cluster.local&PORT=8124&PROTO=http&DURATION=1m&SERVICE=asset-ap
i-v0

Configuration

The service uses the following env vars:

  • PORT: where to listen
  • LOG_LEVEL: how verbose to log (default INFO)
  • REPO_ROOT: where to look for service URL files. This doesn't need to be a git repo, just anywhere that will resolve the following pattern: $REPO_ROOT+/+$SERVICE+".csv"
  • SLACK_CHANNEL: where to send start/end notifications
  • SLACK_TOKEN: slack oauth token (starts with xoxb)

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Simple service to perform CD smoke testing

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