云原生|kubernetes|本地存储hostpath-provisioner部署以及无token密码方式登陆dashboard的部署-天翼云

前言：

kubernetes的存储类大家应该都知道，常用的有nfs-client-provisioner这样插件形式，其实还有一种本地存储类的插件，只是这个估计很冷门，生产上网络存储持久卷还是主流的，本文将介绍一种本地存储类插件。

dashboard是kubernetes的web管理界面，大家也是十分熟悉的，但一般的dashboard是需要使用token登陆或者自行设置密码登陆，这个对于开发人员来说是不友好的，那么，本文将采用另一种方式部署dashboard，只需要简单的部署就可以打开浏览器直接输入IP+端口就登陆dashboard，不需要任何的验证，在二进制集群以及kubeadm集群中均验证通过。

一，本地存储类的部署

这个部署非常简单，两个文件就可以了

【A】

StorageClass.yaml

cat >storageclass.yaml <<EOF
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  namespace: kube-system
  name: standard
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
provisioner: k8s.io/minikube-hostpath
EOF

【B】

storage-provisioner.yaml

cat >storage-provisioner.yaml <<EOF
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: storage-provisioner
  namespace: kube-system
  labels:
    addonmanager.kubernetes.io/mode: Reconcile

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: storage-provisioner
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:persistent-volume-provisioner
subjects:
  - kind: ServiceAccount
    name: storage-provisioner
    namespace: kube-system

---
apiVersion: v1
kind: Pod
metadata:
  name: storage-provisioner
  namespace: kube-system
  labels:
    integration-test: storage-provisioner
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  serviceAccountName: storage-provisioner
  hostNetwork: true
  containers:
  - name: storage-provisioner
    image: /google_containers/storage-provisioner:v1.8.1
    command: ["/storage-provisioner"]
    imagePullPolicy: IfNotPresent
    volumeMounts:
    - mountPath: /tmp
      name: tmp
  volumes:
  - name: tmp
    hostPath:
      path: /tmp
      type: Directory
EOF

部署完成后，查看sc的状态：

[root@node3 addons]# kubectl get sc
NAME                 PROVISIONER                RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
standard (default)   k8s.io/minikube-hostpath   Delete          Immediate           false                  9d

测试这个存储类：

cat > nginx-pvc.yaml <<EOF
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-claim
  annotations: 
    volume.beta.kubernetes.io/storage-class: "standard"
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Mi
EOF

cat >deploy-nginx.yaml <<EOF 
apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: nginx
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx:1.18
        name: nginx
        volumeMounts:
        - name: nginx-persistent-storage
          mountPath: "/usr/share/nginx/html" #不需要修改，映射到镜像内部目录
      volumes:
      - name: nginx-persistent-storage
        persistentVolumeClaim:
          claimName: test-claim #对应到pvc的名字
EOF

测试用pod部署完成后，查看该pod的clusterIP：

[root@node3 nginx]# kubectl get po -A -owide
NAMESPACE              NAME                                        READY   STATUS              RESTARTS   AGE    IP               NODE    NOMINATED NODE   READINESS GATES
default                nginx-b7b6ff9f7-7hmqm                       1/1     Running             3          47h    10.244.0.47      node3   <none>           <none>

查看上面的pvc生成的pv，观察状态，可以看到部署正确无误：

[root@node3 nginx]# kubectl get pv,pvc -A
NAME                                                        CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                STORAGECLASS   REASON   AGE
persistentvolume/pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7   1Mi        RWX            Delete           Bound    default/test-claim   standard                47h

NAMESPACE   NAME                               STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
default     persistentvolumeclaim/test-claim   Bound    pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7   1Mi        RWX            standard       47h

到volume存储的目录下写入nginx的首页文件，查看前面的部署文件可以知道该目录在tmp目录下：

root@node3 nginx]# cd /tmp/hostpath-provisioner/pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7/
[root@node3 pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7]# pwd
/tmp/hostpath-provisioner/pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7
[root@node3 pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7]# ls
index.html
[root@node3 pvc-79fee6e2-e5a2-4fd6-8abc-ea4a1783f2c7]# cat index.html 
this is a test page!!!!!!

curl访问这个pod的clusterIP，可以看到本地存储类完全正确：

[root@node3 ~]# curl 10.244.0.47
this is a test page!!!!!!

部署无token的开发专用dashboard：

我这里将各个模块分开了，总计10个文件，可以将这10个文件合并或者放置到一个空目录下，部署文件如下：

cat >dashboard-sa.yaml <<EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
EOF

cat >dashboard-role.yaml <<EOF 
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  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"]
EOF

cat >dashboard-rolebinding.yaml <<EOF
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  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
EOF

cat >dashboard-clusterrole.yaml<<EOF 
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  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"]
EOF

cat >dashboard-clusterrolebinding.yaml<<EOF 
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
EOF

cat >dashboard-ns.yaml <<EOF
apiVersion: v1
kind: Namespace
metadata:
  name: kubernetes-dashboard
  labels:
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile
EOF

cat >dashboard-configmap.yaml <<EOF
kind: ConfigMap
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  name: kubernetes-dashboard-settings
  namespace: kubernetes-dashboard
EOF

cat >dashboard-secret.yaml <<EOF
apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: kubernetes-dashboard-certs
  namespace: kubernetes-dashboard
type: Opaque

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: kubernetes-dashboard-csrf
  namespace: kubernetes-dashboard
type: Opaque
data:
  csrf: ""

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: kubernetes-dashboard-key-holder
  namespace: kubernetes-dashboard
type: Opaque
EOF

cat >dashboard-svc.yaml <<EOF
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons-endpoint: dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  type: NodePort
  ports:
    - port: 80
      targetPort: 9090
      nodePort: 30001 
  selector:
    k8s-app: kubernetes-dashboard

---

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile    
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 8000
      targetPort: 8000
  selector:
    k8s-app: dashboard-metrics-scraper
EOF

cat >dashboard-dp.yaml <<EOF
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  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:
        "beta.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: {}
---

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  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
          # WARNING: This must match pkg/minikube/bootstrapper/images/images.go
          image: kubernetesui/dashboard:v2.0.1
          ports:
            - containerPort: 9090
              protocol: TCP
          args:
            - --namespace=kubernetes-dashboard
            - --enable-skip-login
            - --disable-settings-authorizer
          # 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:
            # Create on-disk volume to store exec logs
            - mountPath: /tmp
              name: tmp-volume
          livenessProbe:
            httpGet:
              path: /
              port: 9090
            initialDelaySeconds: 30
            timeoutSeconds: 30
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsUser: 1001
            runAsGroup: 2001
      volumes:
        - name: tmp-volume
          emptyDir: {}
      serviceAccountName: kubernetes-dashboard
      nodeSelector:
        "beta.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
EOF

假设以上10个文件放置在dashboard这个文件夹内，执行这些文件即可：

kubectl apply -f dashboard/

查看部署情况：

[root@k8s-master ~]# kubectl get po,secret,cm,sa,svc -n kubernetes-dashboard 
NAME                                            READY   STATUS    RESTARTS   AGE
pod/dashboard-metrics-scraper-dc6947fbf-hf26p   1/1     Running   0          86m
pod/kubernetes-dashboard-6dbb54fd95-795lj       1/1     Running   0          86m

NAME                                      TYPE                                  DATA   AGE
secret/default-token-v6pkr                kubernetes.io/service-account-token   3      87m
secret/kubernetes-dashboard-certs         Opaque                                0      87m
secret/kubernetes-dashboard-csrf          Opaque                                1      87m
secret/kubernetes-dashboard-key-holder    Opaque                                2      87m
secret/kubernetes-dashboard-token-l22q6   kubernetes.io/service-account-token   3      87m

NAME                                      DATA   AGE
configmap/kubernetes-dashboard-settings   0      86m

NAME                                  SECRETS   AGE
serviceaccount/default                1         87m
serviceaccount/kubernetes-dashboard   1         87m

NAME                                TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)        AGE
service/dashboard-metrics-scraper   ClusterIP   10.0.71.99    <none>        8000/TCP       87m
service/kubernetes-dashboard        NodePort    10.0.133.27   <none>        80:30001/TCP   87m

打开任意一个浏览器，输入节点IP+30001 即可访问dashboard了：

云原生|kubernetes|本地存储hostpath-provisioner部署以及无token密码方式登陆dashboard的部署

这个版本还算可以，不是太低，用起来非常方便，十分适合开发人员适用哦。

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云原生|kubernetes|本地存储hostpath-provisioner部署以及无token密码方式登陆dashboard的部署

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