k8s高可用架构部署( 七 ) _k8s高可用架构

# name: kubernetes-dashboard-certs
# namespace: kubernetes-dashboard
#type: Opaque
……
kind: Deployment
……
replicas: 3 #适当调整为3副本
……
imagePullPolicy: IfNotPresent #修改镜像下载策略
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
- --tls-key-file=tls.key
- --tls-cert-file=tls.crt
- --token-ttl=3600 #追加如上args
……
nodeSelector:
"beta.kubernetes.io/os": linux
"dashboard": "yes" #部署在master节点
……
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
type: NodePort #新增
ports:
- port: 8000
nodePort: 30000 #新增
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
……
replicas: 3 #适当调整为3副本
……
nodeSelector:
"beta.kubernetes.io/os": linux
"dashboard": "yes" #部署在master节点
……
正式部署[root@master01 dashboard]# kubectl apply -f recommended.yaml
[root@master01 dashboard]# kubectl get deployment kubernetes-dashboard -n kubernetes-dashboard
[root@master01 dashboard]# kubectl get services -n kubernetes-dashboard
[root@master01 dashboard]# kubectl get pods -o wide -n kubernetes-dashboard

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提示：master01 NodePort 30001/TCP映射到 dashboard pod 443 端口。
创建管理员账户提示：dashboard v2版本默认没有创建具有管理员权限的账户，可如下操作创建。[root@master01 dashboard]# vi dashboard-admin.yaml
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kubernetes-dashboard
[root@master01 dashboard]# kubectl apply -f dashboard-admin.yaml
回到顶部
Ingress暴露Dashboard创建Ingress tls[root@master01 ~]# cd /root/dashboard/certs
[root@master01 certs]# kubectl -n kubernetes-dashboard create secret tls kubernetes-dashboard-tls --cert=tls.crt --key=tls.key
[root@master01 certs]# kubectl -n kubernetes-dashboard describe secrets kubernetes-dashboard-tls

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创建ingress策略[root@master01 ~]# cd /root/dashboard/
[root@master01 dashboard]# vi dashboard-ingress.yaml
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: kubernetes-dashboard-ingress
namespace: kubernetes-dashboard
annotations:
kubernetes.io/ingress.class: "nginx"
nginx.ingress.kubernetes.io/use-regex: "true"
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
nginx.ingress.kubernetes.io/rewrite-target: /
nginx.ingress.kubernetes.io/ssl-redirect: "true"
#nginx.ingress.kubernetes.io/secure-backends: "true"
nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
nginx.ingress.kubernetes.io/proxy-connect-timeout: "600"
nginx.ingress.kubernetes.io/proxy-read-timeout: "600"
nginx.ingress.kubernetes.io/proxy-send-timeout: "600"
nginx.ingress.kubernetes.io/configuration-snippet: |
proxy_ssl_session_reuse off;
spec:
rules:
- host: k8s.odocker.com
http:
paths:
- path: /
backend:
serviceName: kubernetes-dashboard
servicePort: 443
tls:
- hosts:
- k8s.odocker.com
secretName: kubernetes-dashboard-tls
[root@master01 dashboard]# kubectl apply -f dashboard-ingress.yaml
[root@master01 dashboard]# kubectl -n kubernetes-dashboard get ingress

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回到顶部
访问Dashboard导入证书将k8s.odocker.com导入浏览器，并设置为信任，导入操作略。
创建kubeconfig文件使用token相对复杂，可将token添加至kubeconfig文件中，使用KubeConfig文件访问dashboard 。
[root@master01 dashboard]# ADMIN_SECRET=$(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')