[kubernetes]-安装dashboard2.0并解决谷歌浏览器无法访问dashboard的问题

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创建dashboard.yaml

# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

apiVersion: v1
kind: Namespace
metadata:
  name: kubernetes-dashboard

---

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard

---

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
#spec:
#  ports:
#    - port: 443
#      targetPort: 8443
spec:
  type: NodePort # 改成NodePort
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 31001 # 指定nodePort端口
  selector:
    k8s-app: kubernetes-dashboard

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-certs
  namespace: kubernetes-dashboard
type: Opaque

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-csrf
  namespace: kubernetes-dashboard
type: Opaque
data:
  csrf: ""

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-key-holder
  namespace: kubernetes-dashboard
type: Opaque

---

kind: ConfigMap
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-settings
  namespace: kubernetes-dashboard

---

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
rules:
  # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
  - apiGroups: [""]
    resources: ["secrets"]
    resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
    verbs: ["get", "update", "delete"]
    # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
  - apiGroups: [""]
    resources: ["configmaps"]
    resourceNames: ["kubernetes-dashboard-settings"]
    verbs: ["get", "update"]
    # Allow Dashboard to get metrics.
  - apiGroups: [""]
    resources: ["services"]
    resourceNames: ["heapster", "dashboard-metrics-scraper"]
    verbs: ["proxy"]
  - apiGroups: [""]
    resources: ["services/proxy"]
    resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
    verbs: ["get"]

---

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
rules:
  # Allow Metrics Scraper to get metrics from the Metrics server
  - apiGroups: ["metrics.k8s.io"]
    resources: ["pods", "nodes"]
    verbs: ["get", "list", "watch"]

---

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: kubernetes-dashboard
subjects:
  - kind: ServiceAccount
    name: kubernetes-dashboard
    namespace: kubernetes-dashboard

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: kubernetes-dashboard
subjects:
  - kind: ServiceAccount
    name: kubernetes-dashboard
    namespace: kubernetes-dashboard

---

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
    spec:
      containers:
        - name: kubernetes-dashboard
          image: kubernetesui/dashboard:v2.0.0
          imagePullPolicy: Always
          ports:
            - containerPort: 8443
              protocol: TCP
          args:
            - --auto-generate-certificates
            - --namespace=kubernetes-dashboard
            # Uncomment the following line to manually specify Kubernetes API server Host
            # If not specified, Dashboard will attempt to auto discover the API server and connect
            # to it. Uncomment only if the default does not work.
            # - --apiserver-host=http://my-address:port
          volumeMounts:
            - name: kubernetes-dashboard-certs
              mountPath: /certs
              # Create on-disk volume to store exec logs
            - mountPath: /tmp
              name: tmp-volume
          livenessProbe:
            httpGet:
              scheme: HTTPS
              path: /
              port: 8443
            initialDelaySeconds: 30
            timeoutSeconds: 30
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsUser: 1001
            runAsGroup: 2001
      volumes:
        - name: kubernetes-dashboard-certs
          secret:
            secretName: kubernetes-dashboard-certs
        - name: tmp-volume
          emptyDir: {}
      serviceAccountName: kubernetes-dashboard
      nodeSelector:
        "kubernetes.io/os": linux
      # Comment the following tolerations if Dashboard must not be deployed on master
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule

---

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 8000
      targetPort: 8000
  selector:
    k8s-app: dashboard-metrics-scraper

---

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: dashboard-metrics-scraper
  template:
    metadata:
      labels:
        k8s-app: dashboard-metrics-scraper
      annotations:
        seccomp.security.alpha.kubernetes.io/pod: 'runtime/default'
    spec:
      containers:
        - name: dashboard-metrics-scraper
          image: kubernetesui/metrics-scraper:v1.0.4
          ports:
            - containerPort: 8000
              protocol: TCP
          livenessProbe:
            httpGet:
              scheme: HTTP
              path: /
              port: 8000
            initialDelaySeconds: 30
            timeoutSeconds: 30
          volumeMounts:
          - mountPath: /tmp
            name: tmp-volume
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsUser: 1001
            runAsGroup: 2001
      serviceAccountName: kubernetes-dashboard
      nodeSelector:
        "kubernetes.io/os": linux
      # Comment the following tolerations if Dashboard must not be deployed on master
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
      volumes:
        - name: tmp-volume
          emptyDir: {}

创建dashboard

kubectl apply -f dashboard.yaml

访问https://ip+31001 无法使用谷歌浏览器打开 老样子只能用火狐打开

原因是部署UI的镜像中默认自带的证书是一个不可信任的证书

由此可以发现，该证书的很多信息都没有，并且证书的时间也都不正常，这就导致了大部分浏览器不认这个证书，但是我们自己生成的证书大部分浏览器都是可以访问的，那是因为我们自己签发的证书是符合校验字段的

下面介绍两种k8s集群搭建方式对应的解决方案(主要是将自带的证书替换成我们自己签发的证书)

对于自签证书，我们可以使用openssl或者cfssl工具生成证书，或者直接使用k8s证书(/etc/kubernetes/pki)

kubeadm和二进制部署的k8s集群一般都有两套证书(2个ca签发)，一套是apiserver，一套是etcd，如果想使用现成的证书，这两套都可以。

k8s-dashboard证书是存储在k8s中的：

可以发现，certs后面的数据是空的，这就说明在这个secret中并没有存储任何东西，只不过有这个资源创建了，证书在镜像中自带，那么我们需要做的就是需要在这个secret去签发证书，随后在重新创建dashboard的pod即可

kubeadmin部署的集群

1 删除默认的secret，用自签证书创建新的secret

kubectl delete secret kubernetes-dashboard-certs -n kubernetes-dashboard

kubectl create secret generic kubernetes-dashboard-certs \
--from-file=/etc/kubernetes/pki/apiserver.key --from-file=/etc/kubernetes/pki/apiserver.crt -n kubernetes-dashboard

2 修改 dashboard.yaml 文件，在args下面增加证书两行

args:
         # PLATFORM-SPECIFIC ARGS HERE
         - --auto-generate-certificates
         - --tls-key-file=apiserver.key
         - --tls-cert-file=apiserver.crt

kubectl apply -f kubernetes-dashboard.yaml

3 重新应用一下配置 并删除原来的pod

kubectl apply -f dashboard.yaml  --force
kubectl get pods -n kubernetes-dashboard
# 根据自己的pod删除
# kubectl delete pod dashboard-metrics-scraper-5c6ff85ddd-msvdh kubernetes-dashboard-59c948689c-sjn5d -n kubernetes-dashboard
kubectl get pod -n kubernetes-dashboard | grep -v NAME | awk '{print "kubectl delete po " $1 " -n kubernetes-dashboard"}' | sh

再次访问一下dashboard

获取token测试

kubectl get secret  -n kubernetes-dashboard
kubectl -n kubernetes-dashboard get secret | grep  kubernetes-dashboard-token
# 根据自己情况输入命令
kubectl describe secret kubernetes-dashboard-token-74sb7 -n kubernetes-dashboard

可以打开 但是权限有问题 后面文章会说怎么创建不同的配置kubeconfig文件

二进制部署的集群

1 删除默认的secret，用自签证书创建新的secret

kubectl delete secret kubernetes-dashboard-certs -n kubernetes-dashboard

kubectl create secret generic kubernetes-dashboard-certs \
--from-file=/opt/kubernetes/ssl/server-key.pem --from-file=/opt/kubernetes/ssl/server.pem -n kubernetes-dashboard

2 修改 dashboard.yaml 文件，在args下面增加证书两行

args:
       # PLATFORM-SPECIFIC ARGS HERE
       - --auto-generate-certificates
       - --tls-key-file=server-key.pem
       - --tls-cert-file=server.pem

kubectl apply -f kubernetes-dashboard.yaml

网上有说用下面方式修改的 测试了下不行

k8s1.14

dashboard 2.0

mkdir key && cd key
#生成证书
openssl genrsa -out dashboard.key 2048 
openssl req -new -out dashboard.csr -key dashboard.key -subj '/CN=192.168.1.202'
openssl x509 -req -in dashboard.csr -signkey dashboard.key -out dashboard.crt 
#删除原有的证书secret
kubectl get secret kubernetes-dashboard-certs -n kubernetes-dashboard
kubectl delete secret kubernetes-dashboard-certs -n kubernetes-dashboard
#创建新的证书secret
kubectl create secret generic kubernetes-dashboard-certs --from-file=dashboard.key --from-file=dashboard.crt -n kubernetes-dashboard
#查看pod
kubectl get pod -n kubernetes-dashboard
#重启pod
kubectl delete pod <pod name> -n kubernetes-dashboard

参考文章

https://leif.fun/articles/2020/06/08/1591598117843.html

本文标签： 无法访问浏览器Kubernetesdashboard