7、K8S-Dashboard部署

1、参考文档

1.1、参考资料

https://kubernetes.io/docs/concepts/cluster-administration/addons/

1.2、项目地址

https://github.com/kubernetes/dashboard

1.3、注意

 目前来说，dashboard版本没有通用的，只能找到适合当前kubernetes版本的软件。

2、安装

2.1、下载yaml文件

wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.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.org/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
      nodePort: 30443
  type: NodePort
  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:
      securityContext:
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: kubernetes-dashboard
          image: kubernetesui/dashboard:v2.7.0
          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
      nodePort: 30001
  type: NodePort
  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
    spec:
      securityContext:
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: dashboard-metrics-scraper
          image: kubernetesui/metrics-scraper:v1.0.8
          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: {}

dashboard.yaml [支持1.25版本]

2.2、yaml修改部分

2.2.1、kubernetes-dashboard

---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 30443
  type: NodePort
  selector:
    k8s-app: kubernetes-dashboard
---

2.2.2、dashboard-metrics-scraper

---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 8000
      targetPort: 8000
      nodePort: 30001 # 访问的端口
  type: NodePort # 使用节点端口类型
  selector:
    k8s-app: dashboard-metrics-scraper
---

2.2.3、注意

我们在这里做的修改主要是镜像源的修改和启动端口的配置，采用NodePort 可以在所有的节点上都开启一个端口用于dashboard访问
依赖两个镜像：kubernetesui/dashboard 和 kubernetesui/metricsscraper

2.3、应用运行dashboard.yaml

 kubectl apply -f dashboard/dashboard.yaml

2.4、查看pods是否运行成功

[root@master1 ~]# kubectl get pods -n kubernetes-dashboard -o wide
NAME                                         READY   STATUS    RESTARTS   AGE   IP            NODE    NOMINATED NODE   READINESS GATES
dashboard-metrics-scraper-64bcc67c9c-rh9gj   1/1     Running   0          13m   10.244.1.16   node1   <none>           <none>
kubernetes-dashboard-5c8bd6b59-b8z2j         1/1     Running   0          13m   10.244.2.9    node2   <none>           <none>

2.5、查看service情况

[root@master1 ~]# kubectl get svc -n kubernetes-dashboard -o wide
NAME                        TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE   SELECTOR
dashboard-metrics-scraper   NodePort   10.103.187.217   <none>        8000:30001/TCP   14m   k8s-app=dashboard-metrics-scraper
kubernetes-dashboard        NodePort   10.104.252.74    <none>        443:30443/TCP    14m   k8s-app=kubernetes-dashboard

2.6、查看iptables转发规则

[root@node1 ~]# iptables -nL -t nat -v | grep 30001
    2   120 KUBE-EXT-Z6GDYMWE5TV2NNJN  tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            /* kubernetes-dashboard/dashboard-metrics-scraper */ tcp dpt:30001

[root@node2 ~]# iptables -nL -t nat -v | grep 30443
   15   812 KUBE-EXT-CEZPIJSAUFW5MYPQ  tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            /* kubernetes-dashboard/kubernetes-dashboard */ tcp dpt:30443

2.7、网页访问

3、生成访问token相关的信息

3.1、创建专用的服务账户

# 1、创建专用的服务账户
kubectl create serviceaccount dashboard-admin -n kube-system

3.2、使用集群角色绑定

# 2、使用集群角色绑定
kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin

3.3、将新用户查看创建的token

3.3.1、将新用户查看创建的token

# 3.1、将新用户查看创建的token
kubectl -n kube-system create token dashboard-admin
kubectl -n kube-system get secret | grep dashboard-admin

3.3.2、给默认的帐号创建token

# 3.2、给默认的帐号创建token
[root@master1 ~]# kubectl get serviceaccount -A | grep dashboard
kubernetes-dashboard   default                              0         59m
kubernetes-dashboard   kubernetes-dashboard【使用用户名字】                 0         59m

kubectl -n kubernetes-dashboard create token kubernetes-dashboard

4、Dashboard与Ingress-nginx结合

截止目前，访问dashboard，需要查询node节点IP地址，再去访问，后面我们会使用Ingress-Nginx,这样子我们就可以随时访问了。

访问流程：Ingress-Nginx -> SVC -> Pod

具体配置，请看这个章节：https://www.cnblogs.com/ygbh/p/17294067.html#_label6

posted @ 2023-03-16 10:52 小粉优化大师阅读(117) 评论(0) 编辑收藏举报

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7、K8S-Dashboard部署

1、参考文档

1.1、参考资料

1.2、项目地址

1.3、注意

2、安装

2.1、下载yaml文件

2.2、yaml修改部分

2.2.1、kubernetes-dashboard

2.2.2、dashboard-metrics-scraper

2.2.3、注意

2.3、应用运行dashboard.yaml

2.4、查看pods是否运行成功

2.5、查看service情况

2.6、查看iptables转发规则

2.7、网页访问

3、生成访问token相关的信息

3.1、创建专用的服务账户

3.2、使用集群角色绑定

3.3、将新用户查看创建的token

3.3.1、将新用户查看创建的token

3.3.2、给默认的帐号创建token

4、Dashboard与Ingress-nginx结合

公告