红帽全球峰会18.2. 通过更新 StorageCluster CR 设置 Ceph OSD 完整阈值
您可以通过更新 StorageCluster CR 来设置 Ceph OSD 完整阈值。如果要覆盖默认设置，请使用这个步骤。
流程
您可以更新 StorageCluster CR，以更改 full、backfillfull 和 nearfull 的设置。
full
如果 Ceph 阻止达到指定容量的 OSD 上的 IO 操作，则使用以下命令更新 Ceph OSD 全满比率。默认值为 0.85。
注意
如果该值设为 1.0，如果 OSD 已满并且没有地方增长，集群就变得不可恢复。
例如，将 Ceph OSD 全满比率设置为 0.9 ：
oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/fullRatio", "value": 0.90 }]'
$ oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/fullRatio", "value": 0.90 }]'backfillfull
当 Ceph 拒绝回填达到指定容量的 OSD 时，使用以下命令设置 Ceph OSDd backfillfull 比率。默认值为 0.80。
注意
如果值设为 1.0，则 OSD 会变得满，并且集群无法回填。
例如，将 backfill full 设置为 0.85 ：
oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/backfillFullRatio", "value": 0.85 }]'
$ oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/backfillFullRatio", "value": 0.85 }]'nearfull
如果 Ceph 在集群达到指定的容量时，使用以下命令设置 Ceph OSD nearfull OSD 消息。默认值为 0.75。
例如，将 nearfull 设置为 0.8 ：
oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/nearFullRatio", "value": 0.8 }]'
$ oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephCluster/nearFullRatio", "value": 0.8 }]'
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