k8s部署nodelocaldns验证

首先参考这个配置部署nodelocaldns(参考)

apiVersion: apps/v1
kind: Deployment
metadata:
  name: busybox-dns
  namespace: default
spec:
  replicas: 2
  selector:
    matchLabels:
      app: busybox-dns
  template:
    metadata:
      labels:
        app: busybox-dns
    spec:
      dnsPolicy: None
      dnsConfig:
        nameservers:
          - 169.254.20.10
        searches:
          - svc.cluster.local
          - cluster.local
        options:
          - name: ndots
            value: "5"
          - name: single-request-reopen
      containers:
      - name: busybox-dns
        image:  opcache/busybox:dns-go1.16

查询容器

kubectl get pods -o wide --all-namespaces |grep busy

进入容器,验证

kubectl exec  -it     busybox-795d5fc9dd-9ptcv   -n default   -- sh
cat /etc/resolv.conf
cd /usr/local/bin
./hello-dns -host kubernetes.default -c 200 -d 30
request count：239187
error count：0
request time：min(1ms) max(317ms) avg(23ms) timeout(0n)

k8s部署nodelocaldns监控模板参考