安装 Metrics server
Metrics Server 是 Kubernetes 内置自动缩放管道的可扩展、高效的容器资源指标来源。
Metrics Server 从 Kubelets 收集资源指标，并通过Metrics API在 Kubernetes apiserver 中公开它们，以供 Horizontal Pod Autoscaler和Vertical Pod Autoscaler使用。Metrics API 也可以通过 访问kubectl top，从而更容易调试自动缩放管道。
单机版
代码语言：shell复制单机版
wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
查看镜像地址
grep -rn image components.yaml
140: image: k8s.gcr.io/metrics-server/metrics-server:v0.6.1
141: imagePullPolicy: IfNotPresent
设置镜像地址为阿里云
sed -i "s#k8s.gcr.io/metrics-server#registry.cn-hangzhou.aliyuncs.com/chenby#g" components.yaml
查看镜像地址已更新
grep -rn image components.yaml
140: image: registry.cn-hangzhou.aliyuncs.com/chenby/metrics-server:v0.6.1
141: imagePullPolicy: IfNotPresent
args添加tls证书配置选项
vim components.yaml
添加"- --kubelet-insecure-tls"
例：
args:
- --cert-dir=/tmp
- --secure-port=4443
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --kubelet-use-node-status-port
- --metric-resolution=15s
- --kubelet-insecure-tls
image: registry.cn-hangzhou.aliyuncs.com/chenby/metrics-server:v0.6.1
执行配置
kubectl apply -f components.yaml
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created高可用版本
代码语言：shell复制高可用版本
wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/high-availability.yaml
查看镜像地址
grep -rn image high-availability.yaml
150: image: k8s.gcr.io/metrics-server/metrics-server:v0.6.1
151: imagePullPolicy: IfNotPresent
设置镜像地址为阿里云
sed -i "s#k8s.gcr.io/metrics-server#registry.cn-hangzhou.aliyuncs.com/chenby#g" high-availability.yaml
查看镜像地址已更新
grep -rn image high-availability.yaml
150: image: registry.cn-hangzhou.aliyuncs.com/chenby/metrics-server:v0.6.1
151: imagePullPolicy: IfNotPresent
args添加tls证书配置选项
vim high-availability.yaml
添加"- --kubelet-insecure-tls"
例：
args:
- --cert-dir=/tmp
- --secure-port=4443
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --kubelet-use-node-status-port
- --metric-resolution=15s
- --kubelet-insecure-tls
image: registry.cn-hangzhou.aliyuncs.com/chenby/metrics-server:v0.6.1
执行配置
kubectl apply -f high-availability.yaml
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
Warning: policy/v1beta1 PodDisruptionBudget is deprecated in v1.21 , unavailable in v1.25 ; use policy/v1 PodDisruptionBudget
poddisruptionbudget.policy/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created验证
代码语言：shell复制查看metrics资源
kubectl get pod -n kube-system | grep metrics
metrics-server-65fb95948b-2bcht 1/1 Running 0 32s
metrics-server-65fb95948b-vqp5s 1/1 Running 0 32s
查看node资源情况
kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-master01 127m 1% 2439Mi 64%
k8s-node01 50m 0% 1825Mi 23%
k8s-node02 53m 0% 1264Mi 16%
查看pod资源情况
kubectl top pod
NAME CPU(cores) MEMORY(bytes)
chenby-57479d5997-44926 0m 10Mi
chenby-57479d5997-tbpqc 0m 11Mi
chenby-57479d5997-w8cp2 0m 6Mi https://www.oiox.cn/
https://blog.oiox.cn/
https://www.chenby.cn/
https://cby-chen.github.io/
https://blog.csdn.net/qq_33921750
https://my.oschina.net/u/3981543
https://www.zhihu.com/people/chen-bu-yun-2
https://segmentfault.com/u/hppyvyv6/articles
https://juejin.cn/user/3315782802482007
https://cloud.tencent.com/developer/column/93230
https://www.jianshu.com/u/0f894314ae2c
https://www.toutiao.com/c/user/token/MS4wLjABAAAAeqOrhjsoRZSj7iBJbjLJyMwYT5D0mLOgCoo4pEmpr4A/
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