clusterloader2/pkg/measurement/common/dns/manifests/dns-client.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: dnsperfgo
  namespace: {{.Namespace}}
spec:
  replicas: {{.PodReplicas}}
  selector:
    matchLabels:
      dns-test: dnsperfgo
  template:
    metadata:
      labels:
        dns-test: dnsperfgo
    spec:
      containers:
      - name: dnsperfgo
        ports:
        - containerPort: 9153
          name: dnsperfmetrics
          protocol: TCP
        image: gcr.io/k8s-staging-perf-tests/dnsperfgo:v1.3.0
        # Fetches the dns server from /etc/resolv.conf and sends 10 queries per second.
        # With searchpath expansion, this is 120 queries per second.
        # External names like google.com are expanded to 12 queries.
        # FQDN lookups like kubernetes.default.svc.cluster.local are also expanded to 12 queries since they have < 5 dots in the name.
        # Names like kubernetes.default will get partial search path expansion, since the query will succeed once "svc.cluster.local" path is applied.
        # -query-cluster-names flag will generate FQDNs, in order to exercise searchpath expansion.
        # dnsperf has a client timeout of 5s. It sends queries for 60s,
        # then sleeps for 10s, to mimic bursts of DNS queries.
        command:
        - sh
        - -c
        - server=$(cat /etc/resolv.conf | grep nameserver | cut -d ' ' -f 2); echo
          "Using nameserver ${server}";
          ./dnsperfgo -duration 60s -idle-duration 10s -query-cluster-names -qps {{.QPSPerClient}};
        resources:
          requests:
            cpu: 10m
            memory: 10M
      serviceAccountName: {{.ServiceAccountName}}
      terminationGracePeriodSeconds: 1
      # Add not-ready/unreachable tolerations for 15 minutes so that node
      # failure doesn't trigger pod deletion.
      tolerations:
      - key: "node.kubernetes.io/not-ready"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 900
      - key: "node.kubernetes.io/unreachable"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 900