kubernetes安装dashboard

前言

在安装搭建k8s的时候，往往会遇到各种各样的问题，而安装k8s的web展示组件kubernetes-dashboard则是困难中的困难，本人在实际搭建中则被整整卡住了2天，Google和百度轮番搜索，各种技术博客和技术视频反复研究才勉强搭建成功

开始安装

在安装好k8s集群之后，确保集群各个节点都处于ready状态的时候，就可以安装kubernetes-dashboard了
如果没有安装好k8s集群，可以参考之前的文章：centos7.2 安装k8s v1.11.0

• 创建kubernetes-dashboard.yaml文件

# 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.
# Configuration to deploy release version of the Dashboard UI compatible with
# Kubernetes 1.8.
#
# Example usage: kubectl create -f <this_file>
# ------------------- Dashboard Secret ------------------- #
apiVersion: v1
kind: Secret
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kube-system
type: Opaque
--- 
# ------------------- Dashboard Service Account ------------------- #
apiVersion: v1
kind: ServiceAccount
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
--- 
# ------------------- Dashboard Role & Role Binding ------------------- #
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata: 
name: kubernetes-dashboard-minimal
namespace: kube-system
rules: 
# Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
 - apiGroups: [""]
resources: ["secrets"]
verbs: ["create"]
# Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
 - apiGroups: [""]
resources: ["configmaps"]
verbs: ["create"]
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
 - apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
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 from heapster.
 - apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster"]
verbs: ["proxy"]
 - apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
verbs: ["get"]
--- 
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata: 
name: kubernetes-dashboard-minimal
namespace: kube-system
roleRef: 
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard-minimal
subjects: 
 - kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
--- 
# ------------------- Dashboard Deployment ------------------- #
kind: Deployment
apiVersion: apps/v1beta2
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec: 
replicas: 1
revisionHistoryLimit: 10
selector: 
matchLabels: 
k8s-app: kubernetes-dashboard
template: 
metadata: 
labels: 
k8s-app: kubernetes-dashboard
spec: 
serviceAccountName: kubernetes-dashboard
containers: 
 - name: kubernetes-dashboard
image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.8.3
ports: 
 - containerPort: 9090
protocol: TCP
args: 
#- --auto-generate-certificates
# 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://10.0.1.168:8080
volumeMounts: 
 - name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
 - mountPath: /tmp
name: tmp-volume
livenessProbe: 
httpGet: 
scheme: HTTP
path: /
port: 9090
initialDelaySeconds: 30
timeoutSeconds: 30
volumes: 
 - name: kubernetes-dashboard-certs
secret: 
secretName: kubernetes-dashboard-certs
 - name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations: 
 - key: node-role.kubernetes.io/master
effect: NoSchedule
--- 
# ------------------- Dashboard Service ------------------- #
kind: Service
apiVersion: v1
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec: 
ports: 
 - port: 9090
targetPort: 9090
selector: 
k8s-app: kubernetes-dashboard
# ------------------------------------------------------------
kind: Service
apiVersion: v1
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-external
namespace: kube-system
spec: 
ports: 
 - port: 9090
targetPort: 9090
nodePort: 30090
type: NodePort
selector: 
k8s-app: kubernetes-dashboard

• 创建kubernetes-dashboard-admin.rbac.yaml文件

--- 

apiVersion: v1
kind: ServiceAccount
metadata: 
labels: 
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-admin
namespace: kube-system
--- 
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata: 
name: kubernetes-dashboard-admin
labels: 
k8s-app: kubernetes-dashboard
roleRef: 
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects: 
- kind: ServiceAccount
name: kubernetes-dashboard-admin
namespace: kube-system

• 执行命令创建仪表盘所需要的所有容器

kubectl -n kube-system create -f .

• 访问主节点的30090端口即可看到dashboard页面

结语

这里只是实现了kubernetes-dashboard的基本展示页面，后续还有一些插件可以安装，未完待续...