指标尚不可用指标-AWS 上的 kubernetes

Question

我正在尝试在 AWS 上启用 Metrics Server，并按照以下步骤操作

1. 克隆或下载 Metrics Server 项目。

2. 在编辑器中打开 deploy/1.8+/metrics-server-deployment.yaml 文件。

3. 将以下命令值添加到容器属性中（它应该与图像属性处于同一级别）。

command: - /metrics-server - --kubelet-insecure-tls

4. 运行 kubectl create -f deploy/1.8+（如 Metrics Server 存储库中所示）以创建部署、服务等。

到目前为止一切正常，我的 metrics-server-pod 运行良好，但是当我这样做 kubectl top nodes 时，我收到以下错误

error: metrics not available yet

当我做kubectl logs [metrics-server-pod-name] -n kube-system 时，我得到了这个

E0611 14:36:57.527048 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-20-xx-xxx.ec2.internal": no metrics known for node

E0611 14:36:57.527069 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-20-xx-xx.ec2.internal": no metrics known for node

E0611 14:36:57.527075 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-xx-114-xxx.ec2.internal": no metrics known for node

E0611 14:36:57.527079 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-xx-xx-xxx.ec2.internal": no metrics known for node

E0611 14:36:57.527084 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-xx-91-xx.ec2.internal": no metrics known for node

E0611 14:36:57.527088 1 reststorage.go:129] unable to fetch node metrics for node "ip-172-20-xx-xxx.ec2.internal": no metrics known for node

E0611 14:37:26.006830 1 manager.go:111] unable to fully collect metrics: [unable to fully scrape metrics from source kubelet_summary:ip-172-xx-36-103.ec2.internal: unable to fetch metrics from Kubelet ip-172-xx-36-103.ec2.internal (172.20.36.xxx): request failed - "401 Unauthorized", response: "Unauthorized", unable to fully scrape metrics from source kubelet_summary:ip-172-xx-65-xx.ec2.internal: unable to fetch metrics from Kubelet ip-172-20-65-xxx.ec2.internal (172.xx.65.xx): request failed - "401 Unauthorized", response: "Unauthorized", unable to fully scrape metrics from source kubelet_summary:ip-172-xx-114-xxx.ec2.internal: unable to fetch metrics from Kubelet ip-172-20-114-223.ec2.internal (172.xx.114.xxx): request failed - "401 Unauthorized", response: "Unauthorized", unable to fully scrape metrics from source kubelet_summary:ip-172-xx-63-xxx.ec2.internal: unable to fetch metrics from Kubelet ip-172-xx-63-xxx.ec2.internal (172.xx.63.xxx): request failed - "401 Unauthorized", response: "Unauthorized", unable to fully scrape metrics from source kubelet_summary:ip-172-xxx-91-xx.ec2.internal: unable to fetch metrics from Kubelet ip-172-xx-91-xxx.ec2.internal (172.xx.91.xxx): request failed - "401 Unauthorized", response: "Unauthorized", unable to fully scrape metrics from source kubelet_summary:ip-172-xxx-96-xxx.ec2.internal: unable to fetch metrics from Kubelet ip-172-xx-96-xxx.ec2.internal (172.xx.96.xxx): request failed - "401 Unauthorized", response: "Unauthorized"]

Answer 1

选项我。

添加- --kubelet-preferred-address-types=InternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostname

给你的metrics-server-deployment.yaml，例如

command:
  - /metrics-server
  - --kubelet-insecure-tls
  - --kubelet-preferred-address-types=InternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostname

如果还是不行，试试

选项II。

由于 metrics-server 从 coredns 解析主机名，将节点 IP 添加到 coredns configmap

kubectl edit configmap coredns -n kube-system

并添加

apiVersion: v1
data:
  Corefile: |
    .:53 {
        errors
        health
        hosts {
           192.168.199.100 master.qls.com
           192.168.199.220 worker.qls.com
           fallthrough
        }
        kubernetes cluster.local in-addr.arpa ip6.arpa {
           pods insecure
           upstream
           fallthrough in-addr.arpa ip6.arpa
        }
        prometheus :9153
        forward . /etc/resolv.conf
        cache 30
        loop
        reload
        loadbalance
    }
kind: ConfigMap
metadata:
  creationTimestamp: "2019-05-17T12:32:08Z"
  name: coredns
  namespace: kube-system
  resourceVersion: "180"
  selfLink: /api/v1/namespaces/kube-system/configmaps/coredns
  uid: c93e5274-789f-11e9-a0ea-42010a9c0003