前言
- 前面踩坑特别特别多，由于网络原因，由于版本原因，由于证书原因等等。
分析
- 下载官方文件
- 修改官方文件
- 配置证书
- 拉取镜像为本地并设置为master为部署节点
- 启动kubernetes-dashboard
- 页面登录
- 授权管理员
- 查看日志
部署dashboard 过程
下载官方文件
- 修改官方文件
wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-beta4/aio/deploy/recommended.yaml
修改官方文件
- 证书问题
48 #---
49 ## 由于证书问题，只能firefox浏览器才能打开，通过修改证书的方式，使得所有浏览器都能打开
50 #apiVersion: v1
51 #kind: Secret
52 #metadata:
53 # labels:
54 # k8s-app: kubernetes-dashboard
55 # name: kubernetes-dashboard-certs #生成证书会用到该名字
56 # namespace: kubernetes-dashboard #生成证书使用该命名空间
57 #type: Opaque
名字很重要下面生成证书会用到
- 修改获取镜像相关
190 spec:
191 nodeSelector: #部署在哪一个节点的选择器
192 type: master # master
193 containers:
194 - name: kubernetes-dashboard
195 image: kubernetesui/dashboard:v2.0.0-beta4
196 #imagePullPolicy: Always # 注释原来的镜像拉取规则
197 imagePullPolicy: IfNotPresent # 设置为本地没有则拉取
镜像相关设置
- 暴露端口相关设置
30 ---
31
32 kind: Service
33 apiVersion: v1
34 metadata:
35 labels:
36 k8s-app: kubernetes-dashboard
37 name: kubernetes-dashboard
38 namespace: kubernetes-dashboard
39 spec:
40 type: NodePort # 设置为NodePort
41 ports:
42 - port: 443
43 nodePort: 30001 # 不设置则为随机，设置则为该端口
44 targetPort: 8443
45 selector:
46 k8s-app: kubernetes-dashboard
配置证书
# 创建目录使用证书
mkdir key && cd key
# 查看是否存在namespace为kubernetes-dashboard
kubectl get namespaces
# 不存在namespace为创建kubernetes-dashboard创建namespace
kubectl create namespace kubernetes-dashboard
# 生成 key
openssl genrsa -out dashboard.key 2048
# 生成证书请求
openssl req -days 36000 -new -out dashboard.csr -key dashboard.key -subj '/CN=**192.168.100.10**'
# 生成自签证书
openssl x509 -req -in dashboard.csr -signkey dashboard.key -out dashboard.crt
# 目录结构
[root@k8smaster key]# ll
total 12
-rw-r--r-- 1 root root 1001 Oct 23 22:21 dashboard.crt
-rw-r--r-- 1 root root 903 Oct 23 22:20 dashboard.csr
-rw-r--r-- 1 root root 1679 Oct 23 22:20 dashboard.key
# 使用自签证书创建secret
kubectl create secret generic kubernetes-dashboard-certs --from-file=dashboard.key --from-file=dashboard.crt -n kubernetes-dashboard
在master节点上这是label，拉取镜像
# 设置node选择器label为master
kubectl label node k8smaster type=master
# 拉取镜像
docker pull kubernetesui/dashboard:v2.0.0-beta4
启动
kubectl apply -f recommended.yaml
检查
# 查看pod 与service是否运行正常
[root@k8smaster 1]# kubectl get pod,svc -n kubernetes-dashboard -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
pod/dashboard-metrics-scraper-566cddb686-7csmx 1/1 Running 0 2m16s 10.244.2.15 k8snode1 <none> <none>
pod/kubernetes-dashboard-75d8b49cf6-fcn6v 1/1 Running 0 2m17s 10.244.0.19 k8smaster <none> <none>
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
service/dashboard-metrics-scraper ClusterIP 10.110.92.64 <none> 8000/TCP 2m16s k8s-app=dashboard-metrics-scraper
service/kubernetes-dashboard NodePort 10.101.171.115 <none> 443:30001/TCP 2m17s k8s-app=kubernetes-dashboard
[root@k8smaster 1]# kubectl describe pod kubernetes-dashboard-75d8b49cf6-fcn6v -n kubernetes-dashboard
Name: kubernetes-dashboard-75d8b49cf6-fcn6v
Namespace: kubernetes-dashboard
Priority: 0
Node: k8smaster/192.168.100.10
Start Time: Wed, 23 Oct 2019 22:31:49 -0400
Labels: k8s-app=kubernetes-dashboard
pod-template-hash=75d8b49cf6
... ...
省略
... ...
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled <unknown> default-scheduler Successfully assigned kubernetes-dashboard/kubernetes-dashboard-75d8b49cf6-fcn6v to k8smaster
Normal Pulled 3m1s kubelet, k8smaster Container image "kubernetesui/dashboard:v2.0.0-beta4" already present on machine
Normal Created 3m1s kubelet, k8smaster Created container kubernetes-dashboard
Normal Started 3m kubelet, k8smaster Started container kubernetes-dashboard
# 查看
页面登录
浏览器打开
到登录页面
默认用户登录
# 获取token
kubectl describe secrets $(kubectl get secrets -n kubernetes-dashboard | awk '/kubernetes-dashboard-token/{print $1}' ) -n kubernetes-dashboard |sed -n '/token:.*/p'
# 使用该token登录
默认用户权限不足
默认用户现象
授权管理员
# 创建sa
kubectl create serviceaccount dashboard-admin -n kubernetes-dashboard
# 绑定集群管理员
kubectl create clusterrolebinding dashboard-cluster-admin --clusterrole=cluster-admin --serviceaccount=kubernetes-dashboard:dashboard-admin
# 查看sa以及secrets
[root@k8smaster ENV]# kubectl get sa,secrets -n kubernetes-dashboard
NAME SECRETS AGE
serviceaccount/dashboard-admin 1 32s
serviceaccount/default 1 33m
serviceaccount/kubernetes-dashboard 1 25m
NAME TYPE DATA AGE
secret/dashboard-admin-token-rjk49 kubernetes.io/service-account-token 3 32s
secret/default-token-65rm4 kubernetes.io/service-account-token 3 33m
secret/kubernetes-dashboard-certs Opaque 2 33m
secret/kubernetes-dashboard-csrf Opaque 1 25m
secret/kubernetes-dashboard-key-holder Opaque 2 25m
secret/kubernetes-dashboard-token-696vq kubernetes.io/service-account-token 3 25m
# 查看token
kubectl describe secrets dashboard-admin-token-rjk49 -n kubernetes-dashboard
- 或者通过下面命令直接获取token
kubectl describe secrets $(kubectl get secrets -n kubernetes-dashboard | awk '/dashboard-admin-token/{print $1}' ) -n kubernetes-dashboard |sed -n '/token:.*/p'
管理员登录截图
管理员登录截图
- 查看日志
kubectl logs -f kubernetes-dashboard-75d8b49cf6-fcn6v -n kubernetes-dashboard
后话
- 欢迎交流
- 必要时候必须查看官方文档
坑点
- 由于版本原因，上面操作都正常，你授权管理员登录会出现404，实测版本：1.10.1
- 安装# heapster
由于extensions/v1beta1弃用，会出现一连串的问题 官网公告 - heapster 问题
修改后资源清单
[root@k8smaster 1]# cat 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:
type: NodePort
ports:
- port: 443
nodePort: 30001
targetPort: 8443
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
namespace: 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:
nodeSelector:
type: master
containers:
- name: kubernetes-dashboard
#image: registry.cn-hangzhou.aliyuncs.com/google_containers/dashboard:v2.0.0-beta4
image: kubernetesui/dashboard:v2.0.0-beta4
#imagePullPolicy: Always
imagePullPolicy: IfNotPresent
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
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
---
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
spec:
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.1
ports:
- containerPort: 8000
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
serviceAccountName: kubernetes-dashboard
# 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: {}
