6.2. 使用命令行创建 LocalVolumeSet 自定义资源

流程

1. 在 local-volume-set.yaml 文件中定义 LocalVolumeSet 自定义资源。

   apiVersion: local.storage.openshift.io/v1alpha1
   kind: LocalVolumeSet
   metadata:
     name: localblock
   spec:
     nodeSelector:
       nodeSelectorTerms:
         - matchExpressions:
             - key: kubernetes.io/hostname
               operator: In
               values:
                 - worker1.example.com
                 - worker2.example.com
                 - worker3.example.com
     storageClassName: localblock
     volumeMode: Block
     maxDeviceCount: 10 # optional, limit devices provisioned per node
     deviceInclusionSpec:
       deviceTypes: # list of types to allow
         - disk
         - part # omit this to use only whole devices
       deviceMechanicalProperty:
         - NonRotational
       minSize: 100Gi # optional, minimum size of device to allow
       maxSize: 100Ti # optional, maximum size of device to allow
       models: # (optional) list of models to allow
         - SAMSUNG
         - Crucial_CT525MX3
       vendors: # (optional) list of device vendors to allow
         - ATA
         - ST2000LM

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   以上定义从 worker 1、worker2 和 worker 3 节点选择特定类型的非轮转设备上的整个磁盘或分区，这些分区的大小为 100 GB 到 100 TB。创建 本地块存储 类，并从发现的设备置备持久性卷。

   重要

   为 minSize 选择一个适当的值，以确保未选择系统分区。

2. 创建 LocalVolumeSet。

   $ oc create -f local-volume-set.yaml

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验证步骤

1. 使用以下命令，跟踪与 deviceInclusionSpec 匹配的设备的持久性卷置备。调配持久卷可能需要几分钟时间。

   $ oc describe localvolumeset localblock
   [...]
   Status:
     Conditions:
       Last Transition Time:          2020-11-17T05:03:32Z
       Message:                       DiskMaker: Available, LocalProvisioner: Available
       Status:                        True
       Type:                          DaemonSetsAvailable
       Last Transition Time:          2020-11-17T05:03:34Z
       Message:                       Operator reconciled successfully.
       Status:                        True
       Type:                          Available
     Observed Generation:             1
     Total Provisioned Device Count: 4
   Events:
   Type    Reason      Age          From                Message
   ----    ------      ----         ----                -------
   Normal  Discovered  2m30s (x4    localvolumeset-     ip-10-0-147-124.us-east-
           NewDevice   over 2m30s)  symlink-controller  2.compute.internal -
                                                        found possible matching
                                                        disk, waiting 1m to claim
   Normal  FoundMatch  89s (x4      localvolumeset-     ip-10-0-147-124.us-east-
           ingDisk     over 89s)    symlink-controller  2.compute.internal -
                                                        symlinking matching disk

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2. 验证调配的持久卷的状态。

   $ oc get pv
                        ACCESS   RECLAIM             STORAGE
   NAME       CAPACITY  MODES    POLICY   STATUS     CLASS       AGE
   local-pv-  500Gi     RWO      Delete   Available  localblock  7m48s
   3584969f
   local-pv-  500Gi     RWO      Delete   Available  localblock  7m48s
   3aee84fa
   local-pv-  500Gi     RWO      Delete   Available  localblock  7m48s
   644d09ac
   local-pv-  500Gi     RWO      Delete   Available  localblock  7m48s
   c73cee1

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