一、开启cpu Manager

# more /lib/systemd/system/kubelet.service 
  --cpu-manager-policy=static \
  --kube-reserved=cpu=200m,memory=1Gi,ephemeral-storage=1Gi \
  --system-reserved=cpu=200m,memory=1G \

　　

二、如何使用 Pod 必须是 Guaranteed 的 QoS 类型 Pod中该Container的Cpu request必须为整数CPUs   三、实例

# more deploy1.yaml 
apiVersion: apps/v1 
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 4
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80
        resources:
          limits:
            memory: "200Mi"
            cpu: "2"
          requests:
            memory: "200Mi"
            cpu: "2"

 效果查看

# docker ps|grep nginx
7bead158cbf5        84581e99d807                             "nginx -g 'daemon of…"   27 seconds ago      Up 27 seconds                           k8s_nginx_nginx-deployment-c585c6cf8-22x5h_default_3babe9d2-e085-11eb-9b5a-fa163e1b0c2f_0
ab63ab8d72b3        mirrorgooglecontainers/pause-amd64:3.0   "/pause"                 28 seconds ago      Up 27 seconds                           k8s_POD_nginx-deployment-c585c6cf8-22x5h_default_3babe9d2-e085-11eb-9b5a-fa163e1b0c2f_0
# cd /sys/fs/cgroup/cpuset/kubepods/pod3babe9d2-e085-11eb-9b5a-fa163e1b0c2f/7bead158cbf532e325fc3c57afe77fda026b32b5eb0dc9ced509e2e3834df35f/
# more cpuset.cpus 
1-2 //绑定在cpu1-2
# more cpuset.mems 
0

　　

四、报错处理

报错：configured policy "static" differs from state checkpoint policy "none"

# kubectl get node
NAME           STATUS   ROLES    AGE   VERSION
10.30.20.106   Ready    <none>   8d    v1.14.4
10.30.20.119   Ready    <none>   47h   v1.14.4
10.30.20.129   Ready    <none>   8d    v1.14.4
10.30.20.94    Ready    <none>   8d    v1.14.4

# kubectl drain 10.30.20.94 --ignore-daemonsets
# mv /var/lib/kubelet/cpu_manager_state /var/lib/kubelet/cpu_manager_state-old
# kubectl uncordon minikube
# kubectl uncordon 10.30.20.94
node/10.30.20.94 uncordoned
# systemctl daemon-reload
# systemctl restart kubelet
# systemctl status kubelet
# more /var/lib/kubelet/cpu_manager_state-old
{"policyName":"none","defaultCpuSet":"","checksum":3242152201}

参考文档：

https://cloud.tencent.com/developer/article/1402119 https://www.alibabacloud.com/blog/kubernetes-cpu-management-policies_595205