LVM 节点扩展¶
存储系统可以通过增加存储节点实现扩容。在 HwameiStor 里,通过下列步骤可以添加新的存储节点。
步骤¶
1. 准备新的存储节点¶
在 Kubernetes 集群中新增一个节点,或者,选择一个已有的集群节点(非 HwameiStor 节点)。该节点必须满足 准备工作 要求的所有条件。 本例中,所用的新增存储节点和磁盘信息如下所示:
- name: k8s-worker-4
- devPath: /dev/sdb
- diskType: SSD disk
新增节点已经成功加入 Kubernetes 集群之后,检查并确保下列 Pod 正常运行在该节点上,以及相关资源存在于集群中:
NAME STATUS ROLES AGE VERSION
k8s-master-1 Ready master 96d v1.24.3-2+63243a96d1c393
k8s-worker-1 Ready worker 96h v1.24.3-2+63243a96d1c393
k8s-worker-2 Ready worker 96h v1.24.3-2+63243a96d1c393
k8s-worker-3 Ready worker 96d v1.24.3-2+63243a96d1c393
k8s-worker-4 Ready worker 1h v1.24.3-2+63243a96d1c393
hwameistor-local-disk-manager-c86g5 2/2 Running 0 19h 10.6.182.105 k8s-worker-4 <none> <none>
hwameistor-local-storage-s4zbw 2/2 Running 0 19h 192.168.140.82 k8s-worker-4 <none> <none>
检查 LocalStorageNode 资源
2. 添加新增存储节点到 HwameiStor 系统¶
为增加存储节点创建资源 LocalStorageClaim,以此为新增存储节点构建存储池。这样,节点就已经成功加入 HwameiStor 系统。具体如下:
$ kubectl apply -f - <<EOF
apiVersion: hwameistor.io/v1alpha1
kind: LocalDiskClaim
metadata:
name: k8s-worker-4
spec:
nodeName: k8s-worker-4
owner: local-storage
description:
diskType: SSD
EOF
3. 后续检查¶
完成上述步骤后,检查新增存储节点及其存储池的状态,确保节点和 HwameiStor 系统的正常运行。具体如下:
apiVersion: hwameistor.io/v1alpha1
kind: LocalStorageNode
metadata:
name: k8s-worker-4
spec:
hostname: k8s-worker-4
storageIP: 10.6.182.103
topogoly:
region: default
zone: default
status:
pools:
LocalStorage_PoolSSD:
class: SSD
disks:
- capacityBytes: 214744170496
devPath: /dev/sdb
state: InUse
type: SSD
freeCapacityBytes: 214744170496
freeVolumeCount: 1000
name: LocalStorage_PoolSSD
totalCapacityBytes: 214744170496
totalVolumeCount: 1000
type: REGULAR
usedCapacityBytes: 0
usedVolumeCount: 0
volumeCapacityBytesLimit: 214744170496
volumes:
state: Ready