条件：
[root@k8s-master longhorn]# kubectl get nodes -o wide #K8S集群一个
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
k8s-master Ready control-plane,master 27d v1.23.8 192.168.186.128 <none> CentOS Linux 7 (Core) 3.10.0-1160.el7.x86_64 docker://24.0.2
k8s-node1 Ready <none> 27d v1.23.8 192.168.186.129 <none> CentOS Linux 7 (Core) 3.10.0-1160.el7.x86_64 docker://24.0.2
k8s-node2 Ready <none> 27d v1.23.8 192.168.186.130 <none> CentOS Linux 7 (Core) 3.10.0-1160.el7.x86_64 docker://24.0.2
[root@k8s-master longhorn]#
1. 安装基础依赖
yum install -y iscsi-initiator-utils
systemctl start iscsid
systemctl enable iscsid
# 数据存储文件夹
mkdir -p /data/longhorn/
chmod 777 /data/longhorn/
2.K8S-master安装helm
version=v3.3.1
curl -LO https://repo.huaweicloud.com/helm/${version}/helm-${version}-linux-amd64.tar.gz
tar -zxvf helm-${version}-linux-amd64.tar.gz
mv linux-amd64/helm /usr/local/bin/helm && rm -rf linux-amd64
helm version
helm repo add longhorn https://charts.longhorn.io # 添加仓库
helm repo update # 更新仓库
[root@k8s-master longhorn]# helm version
version.BuildInfo{Version:"v3.3.1", GitCommit:"249e5215cde0c3fa72e27eb7a30e8d55c9696144", GitTreeState:"clean", GoVersion:"go1.14.7"}
[root@k8s-master longhorn]#
3. K8S-master安装longhorn
helm install longhorn --namespace longhorn-system --create-namespace --version 1.2.0 --set image.csi.attacher.repository=willdockerhub/csi-attacher --set image.csi.provisioner.repository=willdockerhub/csi-provisioner --set image.csi.nodeDriverRegistrar.repository=willdockerhub/csi-node-driver-registrar --set image.csi.resizer.repository=willdockerhub/csi-resizer --set image.csi.snapshotter.repository=willdockerhub/csi-snapshotter --set defaultSettings.defaultDataPath="/data/longhorn/" --set defaultSettings.defaultReplicaCount=3 --set service.ui.type=NodePort --set service.ui.nodePort=30890 longhorn/longhorn
4. 查看pod运行情况
kubectl get all -n longhorn-system
[root@k8s-master longhorn]# kubectl get all -n longhorn-system
NAME READY STATUS RESTARTS AGE
pod/csi-attacher-5545467cf-2wnnk 1/1 Running 0 19m
pod/csi-attacher-5545467cf-75ngn 1/1 Running 0 19m
pod/csi-attacher-5545467cf-fth87 1/1 Running 0 19m
pod/csi-provisioner-dbfd9989b-4nc9q 1/1 Running 0 19m
pod/csi-provisioner-dbfd9989b-d4xbr 1/1 Running 0 19m
pod/csi-provisioner-dbfd9989b-k8c4h 1/1 Running 0 19m
pod/csi-resizer-86b7bfd496-4tbln 1/1 Running 0 19m
pod/csi-resizer-86b7bfd496-qrjgc 1/1 Running 0 19m
pod/csi-resizer-86b7bfd496-scc5x 1/1 Running 0 19m
pod/csi-snapshotter-7d4cb57bd-6s9x8 1/1 Running 0 19m
pod/csi-snapshotter-7d4cb57bd-hl9tv 1/1 Running 0 19m
pod/csi-snapshotter-7d4cb57bd-zcbcq 1/1 Running 0 19m
pod/engine-image-ei-0f7c4304-p4csd 1/1 Running 0 19m
pod/engine-image-ei-0f7c4304-z6k4g 1/1 Running 0 19m
pod/instance-manager-e-1ec8217a 1/1 Running 0 19m
pod/instance-manager-e-bb1f44bd 1/1 Running 0 11m
pod/instance-manager-r-133281fb 1/1 Running 0 19m
pod/instance-manager-r-2d5fe52c 1/1 Running 0 11m
pod/longhorn-csi-plugin-5xglr 2/2 Running 0 19m
pod/longhorn-csi-plugin-s8snr 2/2 Running 0 19m
pod/longhorn-driver-deployer-66446cc868-dtq78 1/1 Running 0 22m
pod/longhorn-manager-9zxt9 1/1 Running 0 22m
pod/longhorn-manager-mghw4 1/1 Running 1 (20m ago) 22m
pod/longhorn-ui-5c5d79cd8c-5654p 1/1 Running 0 22m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/csi-attacher ClusterIP 10.96.156.91 <none> 12345/TCP 19m
service/csi-provisioner ClusterIP 10.98.174.18 <none> 12345/TCP 19m
service/csi-resizer ClusterIP 10.97.114.120 <none> 12345/TCP 19m
service/csi-snapshotter ClusterIP 10.97.102.105 <none> 12345/TCP 19m
service/longhorn-backend ClusterIP 10.104.189.55 <none> 9500/TCP 22m
service/longhorn-frontend NodePort 10.106.20.68 <none> 80:30890/TCP 22m
NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
daemonset.apps/engine-image-ei-0f7c4304 2 2 2 2 2 <none> 19m
daemonset.apps/longhorn-csi-plugin 2 2 2 2 2 <none> 19m
daemonset.apps/longhorn-manager 2 2 2 2 2 <none> 22m
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/csi-attacher 3/3 3 3 19m
deployment.apps/csi-provisioner 3/3 3 3 19m
deployment.apps/csi-resizer 3/3 3 3 19m
deployment.apps/csi-snapshotter 3/3 3 3 19m
deployment.apps/longhorn-driver-deployer 1/1 1 1 22m
deployment.apps/longhorn-ui 1/1 1 1 22m
NAME DESIRED CURRENT READY AGE
replicaset.apps/csi-attacher-5545467cf 3 3 3 19m
replicaset.apps/csi-provisioner-dbfd9989b 3 3 3 19m
replicaset.apps/csi-resizer-86b7bfd496 3 3 3 19m
replicaset.apps/csi-snapshotter-7d4cb57bd 3 3 3 19m
replicaset.apps/longhorn-driver-deployer-66446cc868 1 1 1 22m
replicaset.apps/longhorn-ui-5c5d79cd8c 1 1 1 22m
[root@k8s-master longhorn]#
5.查看默认存储器
kubectl get sc -n longhorn-system
[root@k8s-master longhorn]# kubectl get sc -n longhorn-system
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
longhorn (default) driver.longhorn.io Delete Immediate true 20m
[root@k8s-master longhorn]#
6. 登陆管理界面
kubectl get svc -n longhorn-system|grep longhorn #查看到端口
[root@k8s-master longhorn]# kubectl get svc -n longhorn-system|grep longhorn #查看到端口
longhorn-backend ClusterIP 10.104.189.55 <none> 9500/TCP 23m
longhorn-frontend NodePort 10.106.20.68 <none> 80:30890/TCP 23m
[root@k8s-master longhorn]#
http://ip:30890 #端口是上面查询到的，IP是k8s集群中任何一个ip
使用方面自己研究吧，这里就不介绍了。
