No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

FusionInsight HD 6.5.0 Administrator Guide 02

Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Recovering ZooKeeper Data

Recovering ZooKeeper Data

Scenario

ZooKeeper data needs to be recovered in the following scenarios: data is modified or deleted unexpectedly and needs to be restored. After an administrator performs critical data adjustment in ZooKeeper, an exception occurs or the operation has not achieved the expected result. All modules are faulty and become unavailable. Data is migrated to a new cluster.

System administrators can create a recovery task in FusionInsight Manager to recover ZooKeeper data. Only manual recovery tasks are supported.

Impact on the System

After the data is recovered, the data produced between the backup time and restoration time is lost.

Prerequisites

  • You have checked that HDFS services have been deployed in the current cluster.
  • You have ensured that the name of the cluster created by ZooKeeper is the same as the cluster name in the backup task.

Procedure

  1. On FusionInsight Manager, choose O&M > Backup and Restoration > Backup Management.
  2. In the Operation column of a specified task in the task list, click More > View History to view historical backup task execution records.

    In the displayed window, locate a specified success record and click View in the Backup Path column to view the backup path information of the task and find the following information:

    • Backup Object specifies the data source of the backup data.
    • Backup Path specifies the full path where the backup files are saved.

    Select the correct item, and manually copy the full path of backup files in Backup Path.

  3. On FusionInsight Manager, choose O&M > Backup and Restoration > Restoration Management.
  4. Click Create.
  5. Set Task Name to the name of the recovery task.
  6. Select ZooKeeper in Restoration Configuration.
  7. Set Path Type of ZooKeeper to a backup directory type.

    The settings vary according to backup directory types:

    • RemoteHDFS: indicates that the backup files are stored in the HDFS directory of the standby cluster. If you select this value, you need to set the following parameters:
      • Source NameNode IP Address: indicates the NameNode service plane IP address of the standby cluster, supporting the active node or standby node.
      • Source Path: indicates the full path of the HDFS directory for storing standby cluster backup data. For example, backup path/backup task name_data source_task creation time/.
      • Recovery Point List: Click Refresh and select an HDFS directory that has been backed up in the standby cluster.
      • Target NameService Name: indicates the target NameService that corresponds to the selected backup directory. The default value of this parameter is hacluster.
    • NFS: indicates that backup files are stored in the NAS over the NFS protocol. If you select NFS, set the following parameters:
      • Server IP address: indicates the NAS server IP address.
      • Source Path: indicates the complete path of the backup file on the NAS server. For example, backup path/backup task name_data source_task creation time/.
      • Recovery Point List: Click Refresh and select an HDFS directory that has been backed up in the standby cluster.
      • Target NameService Name: indicates the target NameService that corresponds to the selected backup directory. The default value of this parameter is hacluster.
    • CIFS: indicates that backup files are stored in the NAS over the CIFS protocol. If you select CIFS, set the following parameters:
      • Server IP address: indicates the NAS server IP address.
      • Port: indicates the port ID used by the CIFS protocol to connect to the NAS server. The default value is 445.
      • Username: Indicates the user name that is configured when setting the CIFS protocol.
      • Password: indicates the password that is configured when setting the CIFS protocol.
      • Source Path: indicates the complete path of the backup file on the NAS server. For example, backup path/backup task name_data source_task creation time/.
      • Recovery Point List: Click Refresh and select an HDFS directory that has been backed up in the standby cluster.
      • Target NameService Name: indicates the target NameService that corresponds to the selected backup directory. The default value of this parameter is hacluster.

  8. Click OK to save the settings.
  9. In the recovery task list, locate a created task and click Start in the Operation column to execute the recovery task.

    • After the recovery is successful, the progress bar is in green.
    • After the recovery is successful, the recovery task cannot be executed again.
    • If the recovery task fails during the first execution, rectify the fault and click Retry to execute the task again.

Download
Updated: 2019-05-17

Document ID: EDOC1100074522

Views: 5947

Downloads: 12

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next