k8s高可用架构部署( 八 ) _k8s高可用架构

[root@master01 dashboard]# DASHBOARD_LOGIN_TOKEN=$(kubectl describe secret -n kubernetes-dashboard ${ADMIN_SECRET} | grep -E '^token' | awk '{print $2}')
[root@master01 dashboard]# kubectl config set-cluster kubernetes
--certificate-authority=/etc/kubernetes/pki/ca.crt
--embed-certs=true
--server=172.24.8.100:16443
--kubeconfig=local-hakek8s-dashboard-admin.kubeconfig # 设置集群参数
[root@master01 dashboard]# kubectl config set-credentials dashboard_user
--token=${DASHBOARD_LOGIN_TOKEN}
--kubeconfig=local-hakek8s-dashboard-admin.kubeconfig # 设置客户端认证参数，使用上面创建的 Token
[root@master01 dashboard]# kubectl config set-context default
--cluster=kubernetes
--user=dashboard_user
--kubeconfig=local-hakek8s-dashboard-admin.kubeconfig # 设置上下文参数
[root@master01 dashboard]# kubectl config use-context default --kubeconfig=local-hakek8s-dashboard-admin.kubeconfig # 设置默认上下文
测试访问Dashboard本实验采用ingress所暴露的域名：方式访问。使用local-hakek8s-dashboard-admin.kubeconfig文件访问：

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提示：更多dashboard访问方式及认证可参考《》。dashboard登录整个流程可参考：
回到顶部
Longhorn存储部署Longhorn概述Longhorn是用于Kubernetes的开源分布式块存储系统。提示：更多介绍参考：。
Longhorn部署[root@master01 ~]# source environment.sh
[root@master01 ~]# for all_ip in ${ALL_IPS[@]}
do
echo ">>> ${all_ip}"
ssh root@${all_ip} "yum -y install iscsi-initiator-utils &"
done
提示：所有节点都需要安装。
[root@master01 ~]# mkdir longhorn
[root@master01 ~]# cd longhorn/
[root@master01 longhorn]# wget
https://raw.githubusercontent.com/longhorn/longhorn/master/deploy/longhorn.yaml
[root@master01 longhorn]# vi longhorn.yaml
#……
---
kind: Service
apiVersion: v1
metadata:
labels:
app: longhorn-ui
name: longhorn-frontend
namespace: longhorn-system
spec:
type: NodePort #修改为nodeport
selector:
app: longhorn-ui
ports:
- port: 80
targetPort: 8000
nodePort: 30002
---
……
kind: DaemonSet
……
imagePullPolicy: IfNotPresent
……
#……
[root@master01 longhorn]# kubectl apply -f longhorn.yaml
[root@master01 longhorn]# kubectl -n longhorn-system get pods -o wide

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提示：若部署异常可删除重建，若出现无法删除namespace，可通过如下操作进行删除：wget rm -rf /var/lib/longhorn/kubectl apply -f uninstall.yamlkubectl delete -f longhorn.yaml
动态sc创建提示：默认longhorn部署完成已创建一个sc，也可通过如下手动编写yaml创建。
[root@master01 longhorn]# kubectl get sc
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
……
longhorn driver.longhorn.io Delete Immediate true 15m
[root@master01 longhorn]# vi longhornsc.yaml
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
name: longhornsc
provisioner: rancher.io/longhorn
parameters:
numberOfReplicas: "3"
staleReplicaTimeout: "30"
fromBackup: ""
[root@master01 longhorn]# kubectl create -f longhornsc.yaml
测试PV及PVC[root@master01 longhorn]# vi longhornpod.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: longhorn-pvc
spec:
accessModes:
- ReadWriteOnce
storageClassName: longhorn
resources:
requests:
storage: 2Gi
---
apiVersion: v1
kind: Pod
metadata:
name: longhorn-pod
namespace: default
spec:
containers:
- name: volume-test
image: nginx:stable-alpine
imagePullPolicy: IfNotPresent
volumeMounts:
- name: volv
mountPath: /data
ports:
- containerPort: 80
volumes:
- name: volv
persistentVolumeClaim:
claimName: longhorn-pvc
[root@master01 longhorn]# kubectl apply -f longhornpod.yaml
[root@master01 longhorn]# kubectl get pods
[root@master01 longhorn]# kubectl get pvc
[root@master01 longhorn]# kubectl get pv