k8s Dashboard 配置（tocken登录实现）
1、获取dashboard image镜像
docker pull registry.cn-hangzhou.aliyuncs.com/rsqlh/kubernetes-dashboard:v1.10.1
docker tag registry.cn-hangzhou.aliyuncs.com/rsqlh/kubernetes-dashboard:v1.10.1 k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.1
docker rmi registry.cn-hangzhou.aliyuncs.com/rsqlh/kubernetes-dashboard:v1.10.1
2、创建yaml文件
vim kubernetes-dashboard.yaml
set paste
# 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.
# ------------------- 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/v1
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:
containers:
- name: kubernetes-dashboard
image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.1
ports:
- containerPort: 8443
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://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
---
# ------------------- Dashboard Service ------------------- #
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
ports:
- port: 443
targetPort: 8443
selector:
k8s-app: kubernetes-dashboard
3、Kubernetes Dashboard 的部署非常简单，只需要运行
kubectl apply -f kubernetes-dashboard.yaml
4、修改对外访问接口 ——可以自己进入yaml文件中添加也可以用以下方式随机生成
kubectl patch svc kubernetes-dashboard -p '{"spec":{"type":"NodePort"}}' -n kube-system #以打补丁方式修改dasboard的访问方式，添加随机的接口
5、查看对应的端口号
kubectl -n kube-system get service kubernetes-dashboard
kubectl get svc -n kube-system
NAME TYPE DATA AGE
def-ns-admin-token-sl8kd kubernetes.io/service-account-token 3 27m
default-token-768l6 kubernetes.io/service-account-token 3 3h44m
详情
kubectl -n kube-system describe service kubernetes-dashboard
然后就可以通过 http://nodeIP:32729 来访问了。火狐浏览器
参考：
cd /etc/kuernetes/pki/
ls
1、给dashboard创建一个专用的证书
(umask 077; openssl genrsa -out dashboard.key 2048)
2、建立一个证书专属请求
openssl req -new -key dashboard.key -out dashboard.csr -subj "/O=magedu/CN=dashboard"
ls
3、给证书签证
openssl x509 -req -in dashboard.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out dashboard.crt -days 365
4、需要把生成的私钥证建成一个secret
kubectl create secret generic dashboard-cert -n kube-system --from-file=dashboard.crt=./dashboard.crt --from-file=dashboard.key=./dashboard.key
5、kubectl get secret -n kube-system
**tocken认证：**
kubectl create serviceaccount dashboard-admin -n kube-system
kubectl get sa -n kube-system
1、把serviceaccount绑定在cluster集群角色上 有权限看到集群的所有信息--集群管理员
kubectl create clusterrolebinding dashboard-cluster-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin
2、获取对应的 serviceaccount 的secret信息 找dashboard-admin
kubectl get secret -n kube-system
kubectl describe secret dashboard-admin-token-xkck5 -n kube-system
#dashboard-admin-token-xkck5为kubectl get secret -n kube-system查到的dashboard的secret
3、启动dashboard
kubectl apply -f kubernetes-dashboard.yaml
kubectl patch svc kubernetes-dashboard -p '{"spec":{"type":"NodePort"}}' -n kube-system
提示：认证时的账号必须为ServiceAccount：被dashboard pod拿来由kubernetes进行认证：
tocken：
(1)创建ServiceAccount，根据其管理目标，使用rolebinding或clusterrolebinding绑定至合理role或clusterrole；
(2)获取到此ServiceAccount的secret，查看secret的详细信息，其中就有tocken
6、查看 def-ns-admin 的 token
kubectl get secret
NAME TYPE DATA AGE
def-ns-admin-token-sl8kd kubernetes.io/service-account-token 3 27m
default-token-768l6 kubernetes.io/service-account-token 3 3h44m
#获取 token 值，用来在填写网页登录认证信息
kubectl describe secret def-ns-admin-token-8vzj5
Name: def-ns-admin-token-sl8kd
Namespace: default
Labels:
Annotations: kubernetes.io/service-account.name: def-ns-admin
kubernetes.io/service-account.uid: ddb6afef-881c-11e9-ba05-00163e00611e
Type: kubernetes.io/service-account-token
Data
====
namespace: 7 bytes
token: eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJkZWZhdWx0Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZWNyZXQubmFtZSI6ImRlZi1ucy1hZG1pbi10b2tlbi1zbDhrZCIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50Lm5hbWUiOiJkZWYtbnMtYWRtaW4iLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiJkZGI2YWZlZi04ODFjLTExZTktYmEwNS0wMDE2M2UwMDYxMWUiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6ZGVmYXVsdDpkZWYtbnMtYWRtaW4ifQ.h_nPlFuTZTFizS_faXOQAEtdPPoDT_0wX6-ENdZp7kdawIfuKthmZ6poEzW7VggBd_D43H0MCHKXs8q12Ut17_NDeW3RM9eK2bfVW7hczpFjAL1mJOd_3_KZwwPKLdWfYgD42490J3ihRzRuKg3XGmrIUdgCLeIN_FvbGnb3TeYsXV5RXgduIMZscALiDtlrxM8Bz1pOTdUwj1kEyg-LhiaahTzxXawy2bHK38yNUJF7tid_V2YKW5SiYsY3oGDtMEyzl6yJa3lC43vm7vvFv5HmhyLh2zLjpyNMREb7R6zIM-fP_nRtzF_4asT116Ar9USn8404AsD5ZazMRkNl-g
ca.crt: 1025 bytes
方式二：令牌+tocken登录
如果报错
正在连接 raw.githubusercontent.com (raw.githubusercontent.com)|151.101.228.133|:443... 失败：拒绝连接。
解决办法：
yum install ca-certificates