Umpire provides a normalized HTTP endpoint that responds with 200 / non-200 according to the metric check parameters specified in the requested URL. This endpoint can then be composed with existing HTTP-URL-monitoring tools like Pingdom to enable self-service QoS monitoring of metrics.
Grab an UMPIRE_URL that you can use to query against:
$ export UMPIRE_URL=https://u:$(heroku config:get API_KEY -a umpire-production)@umpire.yourdomain.comTo respond with 200 if the pulse.nginx-requests-per-second metric has had an average value of less than 400 over the last 300 seconds:
$ curl -i "$UMPIRE_URL/check?metric=pulse.nginx-requests-per-second&max=400&range=300"To respond with 200 if the custom.api.production.requests.per-sec metric has had an average value of more than 40 over the past 60 seconds:
$ curl -i "$UMPIRE_URL/check?metric=custom.api.production.requests.per-sec&min=40&range=60"The default metrics target is Graphite. If you'd like to check Librato Metrics, just add a backend=librato query param:
$ curl -i "$UMPIRE_URL/check?metric=custom.api.production.requests.per-sec&min=40&range=60&backend=librato"$ rvm use 1.9.2
$ bundle install
$ export DEPLOY=dev
$ export FORCE_HTTPS=false
$ export API_KEY=secret
$ export GRAPHITE_URL=https://graphite.yourdomain.com
$ foreman start
$ export UMPIRE_URL=http://umpire:[email protected]:5000
$ curl -i "$UMPIRE_URL/check?metric=pulse.nginx-requests-per-second&max=400&range=300"$ export DEPLOY=production/staging/you
$ export API_KEY=$(openssl rand -hex 16)
$ heroku create -s cedar -r $DEPLOY umpire-$DEPLOY
$ heroku config:add -r $DEPLOY DEPLOY=$DEPLOY
$ heroku config:add -r $DEPLOY FORCE_HTTPS=true
$ heroku config:add -r $DEPLOY API_KEY=$API_KEY
$ heroku config:add -r $DEPLOY GRAPHITE_URL=https://graphite.yourdomain.com
$ git push $DEPLOY master
$ heroku scale -r $DEPLOY web=3
$ export UMPIRE_URL=https://umpire:$API_KEY@umpire-$DEPLOY.herokuapp.com
$ curl -i "$UMPIRE_URL/check?metric=pulse.nginx-requests-per-second&max=400&range=300"Check the health of the Umpire process itself with:
$ curl -i "$UMPIRE_URL/health"Copyright (C) 2012 Mark McGranaghan [email protected]
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