[root@master ~]# dnf install -y jq
[root@master ~]# dnf install -y iscsi-initiator-utils
		
kubectl apply -f https://raw.githubusercontent.com/longhorn/longhorn/v1.3.1/deploy/longhorn.yaml		
		
		

检查环境

		
[root@master ~]# curl -sSfL https://raw.githubusercontent.com/longhorn/longhorn/v1.3.1/scripts/environment_check.sh | bash
[INFO]  Required dependencies are installed.
[INFO]  Waiting for longhorn-environment-check pods to become ready (0/3)...
[INFO]  All longhorn-environment-check pods are ready (3/3).
[ERROR] nfs-utils is not found in agent-2.
[ERROR] nfs-utils is not found in agent-1.
[ERROR] nfs-utils is not found in master.
[ERROR] Please install missing packages.
[INFO]  Cleaning up longhorn-environment-check pods...
[INFO]  Cleanup completed.	
		
		

由于我不需要 NFS 所以没有安装 nfs-utils

首先要给磁盘打上标签，才能使用这个功能

		
[root@master ~]# lsblk 
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 931.5G  0 disk 
`-sda1        8:1    0 931.5G  0 part /opt
nvme0n1     259:0    0 238.5G  0 disk 
|-nvme0n1p1 259:1    0   600M  0 part /boot/efi
|-nvme0n1p2 259:2    0     1G  0 part /boot
|-nvme0n1p3 259:3    0    64G  0 part [SWAP]
`-nvme0n1p4 259:4    0 172.9G  0 part /		

[root@master ~]# ls /opt/longhorn/
longhorn-disk.cfg  replicas
		
		

/opt/longhorn/ 被打了 HDD 标签

		
allowVolumeExpansion: true
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  annotations:
    field.cattle.io/description: 硬盘存储
  name: longhorn-storage
parameters:
  diskSelector: hdd
  numberOfReplicas: "3"
  staleReplicaTimeout: "2880"
provisioner: driver.longhorn.io
reclaimPolicy: Delete
volumeBindingMode: Immediate
		
		

选择多个标签 diskSelector: "ssd,fast"

		
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: longhorn
provisioner: driver.longhorn.io
allowVolumeExpansion: true
parameters:
  numberOfReplicas: "2"
  staleReplicaTimeout: "2880"
  fromBackup: ""
#  diskSelector: "ssd,fast"
  nodeSelector: "storage,fast"
#  recurringJobs: '[{"name":"snap", "task":"snapshot", "cron":"*/1 * * * *", "retain":1},
#                   {"name":"backup", "task":"backup", "cron":"*/2 * * * *", "retain":1,
#                    "labels": {"interval":"2m"}}]'