# This is a small template to exercise linkerd's DNS resolution.
#
# There are two values in this file that should be replaced before applying
# it via `kubectl`:
#
#   - SERVER_REPLICAS: number of server replicas
#   - CLIENT_RPS: rate for slow-cooker to send requests
#
# apply this via a command like:
#
# ```
# ; cat deployment.yaml | sed -e 's/CLIENT_RPS/100/' -e 's/SERVER_REPLICAS/4/'
# ```
---
# An HTTP/1 server running on port 8080.
apiVersion: apps/v1
kind: Deployment
metadata:
  name: fast
spec:
  replicas: SERVER_REPLICAS
  selector:
    matchLabels:
      app: terminus
  template:
    metadata:
      labels:
        app: terminus
    spec:
      containers:
      - name: fast
        image: buoyantio/bb:v0.0.6
        args:
        - terminus
        - "--h1-server-port=8080"
        - "--response-text=pong"
        ports:
        - containerPort: 8080
---
# A service to reach the HTTP/1 server.
apiVersion: v1
kind: Service
metadata:
  name: terminus-svc
  labels:
    app: terminus-svc
spec:
  selector:
    app: terminus
  ports:
  - name: http
    port: 8080
    targetPort: 8080
---
# Generate load, sending 100 requests per second to the service.
apiVersion: batch/v1
kind: Job
metadata:
  name: slow-cooker
spec:
  template:
    metadata:
      labels:
        app: slow-cooker
    spec:
      containers:
      - name: slow-cooker
        image: buoyantio/slow_cooker:1.3.0
        command:
        - "/bin/sh"
        args:
        - "-c"
        - |
          sleep 15 # wait for pods to start
          /slow_cooker/slow_cooker -qps CLIENT_RPS -metric-addr 0.0.0.0:9999 http://terminus-svc:8080
        ports:
        - containerPort: 9999
      restartPolicy: OnFailure

global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'coredns'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9153']
  - job_name: 'linkerd'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:4191']