Longhorn,企业级云原生容器分布式存储 - 定制默认设置

Longhorn,企业级云原生容器分布式存储 - 定制默认设置

内容来源于官方 Longhorn 1.1.2 英文技术手册。

系列

您可以在部署 Longhorn 时自定义它的默认设置。例如,您可以在启动 Longhorn 之前指定 Create Default Disk With Node Labeled(创建带有节点标签的默认磁盘)Default Data Path(默认数据路径)

此默认设置仅适用于尚未部署的 Longhorn 系统。它对现有的 Longhorn 系统没有影响。
任何现有 Longhorn 系统的设置都应使用 Longhorn UI 进行修改。

可以通过以下方式自定义默认设置:

  • 使用 Rancher UI
  • 使用 Longhorn Deployment YAML 文件
  • 使用 Helm

使用 Rancher UI

Rancher 的项目视图中,转到 Apps > Launch > Longhorn 并在启动应用程序之前编辑设置。

使用 Longhorn Deployment YAML 文件

  1. 下载 longhorn repo:

    git clone https://github.com/longhorn/longhorn.git
    
  2. 修改 yaml 文件 longhorn/deploy/longhorn.yaml 中名为 longhorn-default-settingconfig map。例如:

    ---
    apiVersion: v1
    kind: ConfigMap
    metadata:
      name: longhorn-default-setting
      namespace: longhorn-system
    data:
      default-setting.yaml: |-
        backup-target:
        backup-target-credential-secret:
        allow-recurring-job-while-volume-detached:
        create-default-disk-labeled-nodes:
        default-data-path:
        replica-soft-anti-affinity:
        storage-over-provisioning-percentage:
        storage-minimal-available-percentage:
        upgrade-checker:
        default-replica-count:
        default-data-locality:
        guaranteed-engine-cpu:
        default-longhorn-static-storage-class:
        backupstore-poll-interval:
        taint-toleration:
        system-managed-components-node-selector:
        priority-class:
        auto-salvage:
        auto-delete-pod-when-volume-detached-unexpectedly:
        disable-scheduling-on-cordoned-node:
        replica-zone-soft-anti-affinity:
        volume-attachment-recovery-policy:
        node-down-pod-deletion-policy:
        allow-node-drain-with-last-healthy-replica:
        mkfs-ext4-parameters:
        disable-replica-rebuild:
        replica-replenishment-wait-interval:
        disable-revision-counter:
        system-managed-pods-image-pull-policy:
        allow-volume-creation-with-degraded-availability:
        auto-cleanup-system-generated-snapshot:
        concurrent-automatic-engine-upgrade-per-node-limit:
        backing-image-cleanup-wait-interval:
        guaranteed-engine-manager-cpu:
        guaranteed-replica-manager-cpu:
    ---
    

使用 Helm

使用带有 --set 标志的 Helm 命令来修改默认设置。 例如:

helm install longhorn/longhorn --name longhorn --namespace longhorn-system --set defaultSettings.taintToleration="key1=value1:NoSchedule; key2:NoExecute"

您还可以提供一份 values.yaml 文件的副本,其中在运行 Helm 命令时将默认设置修改为 --values 标志:

  1. 从 GitHub 获取 values.yaml 文件的副本:

    curl -Lo values.yaml https://raw.githubusercontent.com/longhorn/charts/master/charts/longhorn/values.yaml
    
  2. 修改 YAML 文件中的默认设置。以下是 values.yaml 的示例片段:

    defaultSettings:
      backupTarget: s3://backupbucket@us-east-1/backupstore
      backupTargetCredentialSecret: minio-secret
      createDefaultDiskLabeledNodes: true
      defaultDataPath: /var/lib/longhorn-example/
      replicaSoftAntiAffinity: false
      storageOverProvisioningPercentage: 600
      storageMinimalAvailablePercentage: 15
      upgradeChecker: false
      defaultReplicaCount: 2
      defaultDataLocality: disabled
      guaranteedEngineCPU:
      defaultLonghornStaticStorageClass: longhorn-static-example
      backupstorePollInterval: 500
      taintToleration: key1=value1:NoSchedule; key2:NoExecute
      systemManagedComponentsNodeSelector: "label-key1:label-value1"
      priority-class: high-priority
      autoSalvage: false
      disableSchedulingOnCordonedNode: false
      replicaZoneSoftAntiAffinity: false
      volumeAttachmentRecoveryPolicy: never
      nodeDownPodDeletionPolicy: do-nothing
      mkfsExt4Parameters: -O ^64bit,^metadata_csum
      guaranteed-engine-manager-cpu: 15
      guaranteed-replica-manager-cpu: 15
    
  3. 使用 values.yaml 运行 Helm:

    helm install longhorn/longhorn --name longhorn --namespace longhorn-system --values values.yaml
    
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Longhorn,企业级云原生容器分布式存储 - 定制默认设置

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