找到应用对应的Pid，查看没有绑定到固定核上，而是在一个cpu池子里随机选。
代码语言：javascript复制[root@paasm1 ~]# cat cpu-ram.yaml
apiVersion: v1
kind: Pod
metadata:
name: cpu-ram-demo
spec:
containers:
- name: cpu-ram-demo-container
image: registry.paas/library/nginx:1.15.9
resources:
requests:
memory: "200Mi"
cpu: "2"
limits:
memory: "200Mi"
cpu: "2"
volumeMounts:
- mountPath: /etc/work
name: host5490
volumes:
- hostPath:
path: /docker_temp
name: host5490
[root@paasm1 ~]# kubectl create -f cpu-ram.yaml
[root@paasn4 ~]# docker ps|grep demo
9fe80681cc9d 8c9ca4d17702 "nginx -g 'daemon of…" 25 seconds ago Up 24 seconds k8s_cpu-ram-demo-container_cpu-ram-demo_default_380104ec-9bfc-11ea-a000-04bd7053eff0_0
ae41406867d7 registry.paas/cmss/pause-amd64:3.1 "/pause" 26 seconds ago Up 25 seconds k8s_POD_cpu-ram-demo_default_380104ec-9bfc-11ea-a000-04bd7053eff0_0
[root@paasn4 ~]# docker inspect 9fe80681cc9d|grep Pid
"Pid": 118177,
"PidMode": "",
"PidsLimit": 0,
[root@paasn4 ~]# taskset -c -p 118177
pid 118177's current affinity list: 0-39
开启容器工作节点支持cpu核绑定特性：
代码语言：javascript复制[root@paasn4 ~]# kubectl delete -f cpu-ram.yaml
[root@paasn4 ~]# kubectl drain paasn4
[root@paasn4 ~]# systemctl stop kubelet
[root@paasn4 ~]# systemctl status kubelet
[root@paasn4 ~]# mv /dcos/kubelet/cpu_manager_state /dcos/kubelet/bak_cpu_manager_state
修改kubelet的启动参数，添加: --cpu-manager-policy=static 和 --kube-reserved=cpu=1（给cpu池子留点资源）
[root@paasn4 ~]# vim /etc/systemd/system/kubelet.service
[root@paasn4 ~]# systemctl daemon-reload
[root@paasn4 ~]# systemctl start kubelet
[root@paasn4 ~]# systemctl status kubelet
[root@paasn4 ~]# kubectl uncordon paasn4
找到应用对应的Pid，查看已绑定到固定核上。
代码语言：javascript复制[root@paasn4 ~]# docker ps|grep demo
8da22cd45eda 8c9ca4d17702 "nginx -g 'daemon of…" 23 seconds ago Up 22 seconds k8s_cpu-ram-demo-container_cpu-ram-demo_default_ef1a0d28-9bfc-11ea-a000-04bd7053eff0_0
c81430f7ca4e registry.paas/cmss/pause-amd64:3.1 "/pause" 24 seconds ago Up 22 seconds k8s_POD_cpu-ram-demo_default_ef1a0d28-9bfc-11ea-a000-04bd7053eff0_0
[root@paasn4 ~]# docker inspect 8da22cd45eda|grep Pid
"Pid": 123203,
"PidMode": "",
"PidsLimit": 0,
[root@paasn4 ~]# taskset -c -p 123203
pid 123203's current affinity list: 1,21
