Managing MRS Cluster Backup and Restoration Tasks

Impact on the System

After a backup task is modified, the new parameters take effect when the task is executed next time.

Prerequisites

• A backup task has been created.
• A new backup task policy has been planned based on the actual situation.

Modifying a Backup Task (MRS 3.x and Later)

1. On FusionInsight Manager, choose O&M > Backup and Restoration > Backup Management.
2. In the task list, locate a specified task, click Configure in the Operation column to go to the configuration modification page.

   On the displayed page, modify the following parameters:

   • Started: time when the backup task is started for the first time.
   • Period: interval between the next startup and the last execution of the backup task, supporting hourly or daily intervals.
   • Destination NameService Name: NameService of the standby cluster.
   • Destination NameNode IP Address: IP address of the standby cluster's NameNode service plane, supporting both active and standby nodes.
   • Destination Path: HDFS directory for storing backup data of the standby cluster. The storage path cannot be an HDFS hidden directory, such as a snapshot or recycle bin directory, or a default system directory, such as /hbase or /user/hbase/backup.
   • Maximum Number of Backup Copies: number of backup file sets that can be retained in the backup directory.
   • Maximum Number of Recovery Points: number of snapshots that can be retained in the cluster.
   • Maximum Number of Maps: maximum number of maps for executing MapReduce tasks.
   • Maximum Map Bandwidth (MB/s): maximum bandwidth of a single map.
   

   After the Target Path parameter of a backup task is modified, this task will be performed as a full backup task for the first time by default.

3. Click OK to save the settings.

Modifying a Backup Task (MRS 2.x and Earlier)

1. On MRS Manager, choose System > Back Up Data.
2. In the task list, locate a specified task, click Modify in the Operation column to go to the configuration modification page.
3. Modify the following parameters on the displayed page:
   • Manual backup:
     • Target Path: HDFS directory for storing the backup files.
     • Maximum Number of Backup Copies: number of backup file sets that can be retained in the backup directory.
   • Periodic backup:
     • Started: time when the task is started for the first time.
     • Period: interval between the next startup and the last execution of the backup task, supporting hourly or daily intervals.
     • Target Path: HDFS directory for storing the backup files. The path cannot be an HDFS hidden directory, such as snapshot or recycle bin directory, or a default system directory.
     • Maximum Number of Backup Copies: number of backup file sets that can be retained in the backup directory.
     

     • When Path Type is set to LocalHDFS, Target Path is valid for modifying a backup task.
     • After the Target Path parameter of a backup task is modified, this task will be performed as a full backup task for the first time by default.

4. Click OK to save the settings.

Viewing Backup and Restoration Tasks (MRS 3.x and Later)

1. On FusionInsight Manager, choose O&M > Backup and Restoration.
2. Click Backup Management or Restoration Management.
3. In the task list, obtain the previous execution result in the Task Status and Task Progress column. Green indicates that the task is executed successfully, and red indicates that the execution fails.
4. In the Operation column of a specified task in the task list, choose More > View History or click View History to view the historical record of backup and restoration task execution.

   In the displayed window, click before a specified record to display log information about the execution.

   You can also perform more maintenance operations listed in Table 1 in the Operation column of a specified task.

   Table 1 Maintenance and management operations

   Operation Entry	Description
   More > Back Up Now or Start	Start a backup or restoration task that is ready or fails to be executed. Executed restoration tasks cannot be repeatedly executed.
   Configure	Modify parameters for a backup task.
   Restore	After data backup, click Restore to quickly restore data.
   More > Back Up Now	Execute a backup task immediately.
   More > Stop or Stop	Stop a running backup or restoration task. After the task is stopped, its Task Status changes to Stopped.
   More > Delete or Delete	Delete a backup or restoration task. After a task is deleted, the backup data is retained by default.
   More > Suspend	Suspend a backup task. Only periodic backup tasks can be suspended. Suspended backup tasks are no longer executed automatically. If you suspend a backup task that is being executed, the task execution stops. To unlock the task and run it again, choose More > Run Again.
   More > Resume	Enable automatic backup.
   More > View History or View History	Switch to the task run log page to view the task running details and backup path.
   View	Check the parameter settings of a restoration task.
   Start	Run a restoration task.

Viewing Backup and Restoration Tasks (MRS 2.x and Earlier)

1. On MRS Manager, click System.
2. Click Backup Management or Restoration Management.
3. In the task list, obtain the previous execution result in the Task Progress column. Green indicates that the task is executed successfully, and red indicates that the execution fails.
4. In the Operation column of a specified task in the task list, choose More > View History to view the historical record of backup and restoration execution.

   In the displayed window, click View in the Details column. The task execution logs and paths are displayed.

   

   Other related operations are as follows:

   • Viewing a restoration task

     In the Operation column of the specified task in the task list, click View Details to view the restoration task. You can only view but cannot modify the parameters of a restoration task.

   • Executing a backup or restoration task

     In the task list, locate a specified task and click Start in the Operation column to start a backup or restoration task that is ready or fails to be executed. Executed restoration tasks cannot be repeatedly executed.

   • Stopping a backup task

     In the task list, locate a specified task and choose More > Stop in the Operation column to stop a backup task that is running.

   • Deleting a backup or restoration task

     In the Operation column of the specified task in the task list, choose More > Delete to delete the backup or restoration task. After a task is deleted, the backup data is retained by default.

   • Suspending a backup task

     In the task list, locate a specified task and choose More > Suspend in the Operation column to suspend the backup task. Only periodic backup tasks can be suspended. Suspended backup tasks are no longer executed automatically. When you suspend a backup task that is being executed, the task execution stops. To cancel the suspension status of a task, choose More > Resume.