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社区首页 >问答首页 >度量服务器目前无法处理请求。

问度量服务器目前无法处理请求。
EN

Stack Overflow用户
提问于 2022-04-12 12:50:38
回答 4查看 6.4K关注 0票数 3

我是库伯内特斯的新手，并试图将水平吊舱自动标度应用到我现有的应用程序中。在跟踪了其他堆栈溢出的详细信息之后--我知道我需要安装度量服务器--而且我能够--但是，它是如何不工作的，并且无法处理请求。

  • 更进一步，我关注了其他一些事情，但无法解决这个问题--我非常感谢这里的任何帮助。如果您需要帮助我，请让我知道更多的细节:)预先谢谢。

采取的步骤如下：

库贝克尔应用-f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml

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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

kubectl部署，svc -n kube-system \ egrep指标-server

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deployment.apps/metrics-server   1/1     1            1           2m6s
service/metrics-server                       ClusterIP   10.32.0.32   <none>        443/TCP                        2m6s

kubectl获取豆荚-n kube-system \ grep指标-服务器

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metrics-server-64cf6869bd-6gx88   1/1     Running   0          2m39s

vi ana_hpa.yaml

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apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
metadata:
  name: ana-hpa
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: StatefulSet
    name: common-services-auth
  minReplicas: 1
  maxReplicas: 10
  metrics:
  - type: Resource
    resource:
      name: cpu
      target:
        type: Utilization
        averageUtilization: 80
  - type: Resource
    resource:
      name: memory
      target:
        type: Utilization
        averageUtilization: 160

K应用-f ana_hpa.yaml

自动定标/ana创建

K得到hpa

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NAME      REFERENCE                          TARGETS                         MINPODS   MAXPODS   REPLICAS   AGE
ana-hpa   StatefulSet/common-services-auth   <unknown>/160%, <unknown>/80%   1         10        0          4s

描述hpa和-hpa

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Name:                                                     ana-hpa
Namespace:                                                default
Labels:                                                   <none>
Annotations:                                              <none>
CreationTimestamp:                                        Tue, 12 Apr 2022 17:01:25 +0530
Reference:                                                StatefulSet/common-services-auth
Metrics:                                                  ( current / target )
  resource memory on pods  (as a percentage of request):  <unknown> / 160%
  resource cpu on pods  (as a percentage of request):     <unknown> / 80%
Min replicas:                                             1
Max replicas:                                             10
StatefulSet pods:                                         3 current / 0 desired
Conditions:
  Type           Status  Reason                   Message
  ----           ------  ------                   -------
  AbleToScale    True    SucceededGetScale        the HPA controller was able to get the target's current scale
  ScalingActive  False   FailedGetResourceMetric  the HPA was unable to compute the replica count: failed to get memory utilization: unable to get metrics for resource memory: unable to fetch metrics from resource metrics API: the server is currently unable to handle the request (get pods.metrics.k8s.io)
Events:
  Type     Reason                        Age                  From                       Message
  ----     ------                        ----                 ----                       -------
  Warning  FailedGetResourceMetric       38s (x8 over 2m23s)  horizontal-pod-autoscaler  failed to get cpu utilization: unable to get metrics for resource cpu: unable to fetch metrics from resource metrics API: the server is currently unable to handle the request (get pods.metrics.k8s.io)
  Warning  FailedComputeMetricsReplicas  38s (x8 over 2m23s)  horizontal-pod-autoscaler  invalid metrics (2 invalid out of 2), first error is: failed to get memory utilization: unable to get metrics for resource memory: unable to fetch metrics from resource metrics API: the server is currently unable to handle the request (get pods.metrics.k8s.io)
  Warning  FailedGetResourceMetric       23s (x9 over 2m23s)  horizontal-pod-autoscaler  failed to get memory utilization: unable to get metrics for resource memory: unable to fetch metrics from resource metrics API: the server is currently unable to handle the request (get pods.metrics.k8s.io)

kubectl get --生/api/emeics.k8s.io/v1beta1

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Error from server (ServiceUnavailable): the server is currently unable to handle the request

kubectl get

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Error from server (ServiceUnavailable): the server is currently unable to handle the request

编辑deployments.apps -n kube-系统度量-服务器

添加hostNetwork: true

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deployment.apps/metrics-server edited

kubectl获取豆荚-n kube-system \ grep指标-服务器

指标.服务器-5 dc6db8-42hw9 1/1运行0 10 m

K描述荚指标-server-5 dc6db8-42hw9 -n kube-system

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Name:                 metrics-server-5dc6dbdb8-42hw9
Namespace:            kube-system
Priority:             2000000000
Priority Class Name:  system-cluster-critical
Node:                 pusntyn196.apac.avaya.com/10.133.85.196
Start Time:           Tue, 12 Apr 2022 17:08:25 +0530
Labels:               k8s-app=metrics-server
                      pod-template-hash=5dc6dbdb8
Annotations:          <none>
Status:               Running
IP:                   10.133.85.196
IPs:
  IP:           10.133.85.196
Controlled By:  ReplicaSet/metrics-server-5dc6dbdb8
Containers:
  metrics-server:
    Container ID:  containerd://024afb1998dce4c0bd5f4e58f996068ea37982bd501b54fda2ef8d5c1098b4f4
    Image:         k8s.gcr.io/metrics-server/metrics-server:v0.6.1
    Image ID:      k8s.gcr.io/metrics-server/metrics-server@sha256:5ddc6458eb95f5c70bd13fdab90cbd7d6ad1066e5b528ad1dcb28b76c5fb2f00
    Port:          4443/TCP
    Host Port:     4443/TCP
    Args:
      --cert-dir=/tmp
      --secure-port=4443
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
      --kubelet-use-node-status-port
      --metric-resolution=15s
    State:          Running
      Started:      Tue, 12 Apr 2022 17:08:26 +0530
    Ready:          True
    Restart Count:  0
    Requests:
      cpu:        100m
      memory:     200Mi
    Liveness:     http-get https://:https/livez delay=0s timeout=1s period=10s #success=1 #failure=3
    Readiness:    http-get https://:https/readyz delay=20s timeout=1s period=10s #success=1 #failure=3
    Environment:  <none>
    Mounts:
      /tmp from tmp-dir (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-g6p4g (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             True
  ContainersReady   True
  PodScheduled      True
Volumes:
  tmp-dir:
    Type:       EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:
    SizeLimit:  <unset>
  kube-api-access-g6p4g:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   Burstable
Node-Selectors:              kubernetes.io/os=linux
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 2s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 2s
Events:
  Type    Reason     Age    From               Message
  ----    ------     ----   ----               -------
  Normal  Scheduled  2m31s  default-scheduler  Successfully assigned kube-system/metrics-server-5dc6dbdb8-42hw9 to pusntyn196.apac.avaya.com
  Normal  Pulled     2m32s  kubelet            Container image "k8s.gcr.io/metrics-server/metrics-server:v0.6.1" already present on machine
  Normal  Created    2m31s  kubelet            Created container metrics-server
  Normal  Started    2m31s  kubelet            Started container metrics-server

kubectl get --生/api/emeics.k8s.io/v1beta1

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Error from server (ServiceUnavailable): the server is currently unable to handle the request

kubectl获取豆荚-n kube-system \ grep指标-服务器

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metrics-server-5dc6dbdb8-42hw9   1/1     Running   0          10m

kubectl日志-f指标-server-5 dc6db8-42hw9 -n kube-system

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E0412 11:43:54.684784       1 configmap_cafile_content.go:242] kube-system/extension-apiserver-authentication failed with : missing content for CA bundle "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"
E0412 11:44:27.001010       1 configmap_cafile_content.go:242] key failed with : missing content for CA bundle "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"

k logs -f metrics-server-5dc6dbdb8-42hw9 -n kube-system
    I0412 11:38:26.447305       1 serving.go:342] Generated self-signed cert (/tmp/apiserver.crt, /tmp/apiserver.key)
    I0412 11:38:26.899459       1 requestheader_controller.go:169] Starting RequestHeaderAuthRequestController
    I0412 11:38:26.899477       1 shared_informer.go:240] Waiting for caches to sync for RequestHeaderAuthRequestController
    I0412 11:38:26.899518       1 configmap_cafile_content.go:201] "Starting controller" name="client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"
    I0412 11:38:26.899545       1 shared_informer.go:240] Waiting for caches to sync for client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file
    I0412 11:38:26.899546       1 configmap_cafile_content.go:201] "Starting controller" name="client-ca::kube-system::extension-apiserver-authentication::client-ca-file"
    I0412 11:38:26.899567       1 shared_informer.go:240] Waiting for caches to sync for client-ca::kube-system::extension-apiserver-authentication::client-ca-file
    I0412 11:38:26.900480       1 dynamic_serving_content.go:131] "Starting controller" name="serving-cert::/tmp/apiserver.crt::/tmp/apiserver.key"
    I0412 11:38:26.900811       1 secure_serving.go:266] Serving securely on [::]:4443
    I0412 11:38:26.900854       1 tlsconfig.go:240] "Starting DynamicServingCertificateController"
    W0412 11:38:26.900965       1 shared_informer.go:372] The sharedIndexInformer has started, run more than once is not allowed
    I0412 11:38:26.999960       1 shared_informer.go:247] Caches are synced for client-ca::kube-system::extension-apiserver-authentication::client-ca-file
    I0412 11:38:26.999989       1 shared_informer.go:247] Caches are synced for RequestHeaderAuthRequestController
    I0412 11:38:26.999970       1 shared_informer.go:247] Caches are synced for client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file
    E0412 11:38:27.000087       1 configmap_cafile_content.go:242] kube-system/extension-apiserver-authentication failed with : missing content for CA bundle "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"
    E0412 11:38:27.000118       1 configmap_cafile_content.go:242] key failed with : missing content for CA bundle "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"

kubectl顶节点

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Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io)

库贝克尔吊舱

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Error from server (ServiceUnavailable): the server is currently unable to handle the request (get pods.metrics.k8s.io)

编辑度量服务器部署yaml

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Add - --kubelet-insecure-tls

K应用-f度量-服务器-部署

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serviceaccount/metrics-server unchanged
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader unchanged
clusterrole.rbac.authorization.k8s.io/system:metrics-server unchanged
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader unchanged
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator unchanged
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server unchanged
service/metrics-server unchanged
deployment.apps/metrics-server configured
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io unchanged

kubectl获取豆荚-n kube-system \ grep指标-服务器

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metrics-server-5dc6dbdb8-42hw9   1/1     Running   0          10m

库贝克尔吊舱

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Error from server (ServiceUnavailable): the server is currently unable to handle the request (get pods.metrics.k8s.io)

还通过将下面添加到度量服务器部署中进行尝试

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    command:
    - /metrics-server
    - --kubelet-insecure-tls
    - --kubelet-preferred-address-types=InternalIP
kubernetes
hpa
metrics-server
EN

回答 4

Stack Overflow用户

发布于 2022-04-12 21:27:36

通过编辑部署yaml文件并在hostNetwork: true后添加dnsPolicy: ClusterFirst，可以轻松地解决这一问题。

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kubectl edit deployments.apps -n kube-system metrics-server

插入：

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hostNetwork: true
票数 2
EN

Stack Overflow用户

发布于 2022-07-08 11:30:43

请正确和小心地配置聚合层，您可以使用此链接获得帮助：https://kubernetes.io/docs/tasks/extend-kubernetes/configure-aggregation-layer/。

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apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
  name: <name of the registration object>
spec:
  group: <API group name this extension apiserver hosts>
  version: <API version this extension apiserver hosts>
  groupPriorityMinimum: <priority this APIService for this group, see API documentation>
  versionPriority: <prioritizes ordering of this version within a group, see API documentation>
  service:
    namespace: <namespace of the extension apiserver service>
    name: <name of the extension apiserver service>
  caBundle: <pem encoded ca cert that signs the server cert used by the webhook>

提供kubectl version返回值会很有帮助。

票数 0
EN

Stack Overflow用户

发布于 2022-11-07 10:31:09

我希望这对裸金属簇的人有所帮助：

$ helm --回购https://kubernetes-sigs.github.io/metrics-server/ --kubeconfig=$HOME/.kube/loc-cluster.config -n kube-system -set args=‘{-kubelet-不安全-tls}’升级-安装度量-服务器度量-服务器

$ helm --kubeconfig=$HOME/.kube/loc-cluster.config -n kube-系统卸载度量-服务器

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/71843068

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