Help Center > > User Guide> FusionInsight Manager Operation Guide> Backup and Recovery Management> Backing Up Data> Backing Up Kafka Metadata

Backing Up Kafka Metadata

Updated at: Mar 25, 2021 GMT+08:00

Scenario

To ensure Kafka metadata security or before and after a critical operation (such as upgrade and migration) on ZooKeeper, Kafka metadata needs to be backed up. The backup data can be used to recover the system in time if an exception occurs or the operation has not achieved the expected result, minimizing the adverse impact on services.

System administrators can create a backup task in FusionInsight Manager to back up Kafka metadata. Both automatic backup tasks and manual backup tasks are supported.

Prerequisites

  • If you want to back up data to the remote HDFS. A standby cluster for backing up data has been created. The mode of the standby cluster is the same as that of the active cluster. In other backup modes, you do not need to prepare the standby cluster.
  • If the active cluster is deployed in security mode and the active and standby clusters are not managed by the same FusionInsight Manager, configure system mutual trust. For details, see Configuring Cross-Manager Cluster Mutual Trust Relationships. If the active cluster is deployed in normal mode, do not configure mutual trust.
  • Cross-cluster replication has been configured for the active and standby clusters. For details, see Enabling Cross-Cluster Replication.
  • The time of the active cluster and standby cluster must be the same, and the NTP service in the active and standby clusters must use the same time source.
  • Based on the service requirements, plan the backup type, period, policy, and other specifications, and check whether Data path/LocalBackup/ has sufficient space on active and standby management nodes.
  • If you want to back up data to the NAS, you need to deploy the NAS server in advance.

Procedure

  1. On FusionInsight Manager, choose O&M > Backup and Restoration > Backup Management.
  2. Click Create.
  3. Set Name to the name of the backup task.
  4. Select the cluster to be operated from Backup Object.
  5. Set Mode to the type of the backup task.

    Periodic indicates that the backup task is periodically executed and Manual indicates that the backup task is manually executed.

    Table 1 Periodic backup parameters

    Parameter Name

    Description

    Started

    Indicates the time when the task is started for the first time.

    Period

    Indicates task execution interval. The options include Hours and Days.

    Backup Policy

    • Full backup at the first time and incremental backup subsequently
    • Full backup every time
    • Full backup once every n time
    NOTE:
    • Incremental backup is not supported when Manager data and component metadata are backed up. Only Full backup every time is supported.
    • If Mode is set to Periodic and the Path Type is set to NFS or CIFS, the incremental backup function cannot be used. If incremental backup is used in this scenario, data in full backup will be updated in each incremental backup, and no recovery point will be generated.

  6. Set Configuration to Kafka.

    If there are multiple Kafka services, all Kafka services are backed up by default. You can click Assign Service to specify the Kafka to be backed up.

  7. Set Path Type of Kafka to a backup directory type.

    The following backup directory types are supported:

    • LocalDir: indicates that the backup files are stored on the local disk of the active management node and the standby management node automatically synchronizes the backup file. The default save path is Data path/LocalBackup/.

      If you select this value, you need to set Maximum number of backup copies to specify the number of backup files that can be retained in the backup directory.

    • LocalHDFS: indicates that the backup files are stored in the HDFS directory of the current cluster.
      If you select this value, you need to set the following parameters:
      • Target path: indicates the backup file save path in the HDFS. The save path cannot be an HDFS hidden directory, such as snapshot or recycle bin directory, or a default system directory, such as /hbase or /user/hbase/backup.
      • Maximum Number of Backup Copies: indicates the number of backup files that can be retained in the backup directory.
      • Target NameService Name: indicates the NameService name that corresponds to the backup directory. The default value is hacluster.
    • 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:
      • Destination NameService Name: indicates the NameService name of the standby cluster. You can set it to the NameService name (haclusterX, haclusterX1, haclusterX2, haclusterX3, or haclusterX4) of the built-in remote cluster of the cluster, or the NameService name of a configured remote cluster.
      • IP Mode: mode of the target IP address.The system automatically selects the IP address mode based on the cluster network type, for example, IPv4 or IPv6.
      • Target NameNode IP Address: indicates the NameNode service plane IP address of the standby cluster, supporting the active node or standby node.
      • Target path: indicates the HDFS directory for storing standby cluster backup data. The save path cannot be an HDFS hidden directory, such as snapshot or recycle bin directory, or a default system directory, such as /hbase or /user/hbase/backup.
      • Maximum Number of Backup Copies: indicates the number of backup files that can be retained in the backup directory.
      • Queue Name: indicates the name of the YARN queue used for backup task execution. The name must be the same as the name of the queue that is running properly in the cluster.
    • NFS: indicates that backup files are stored in the NAS over the NFS protocol.
      If you select NFS, set the following parameters:
      • IP Mode: mode of the target IP address.The system automatically selects the IP address mode based on the cluster network type, for example, IPv4 or IPv6.
      • Server IP Address: indicates the NAS server IP address.
      • Server Shared Path: indicates the configured shared directory on the NAS server.
      • Maximum Number of Backup Copies: indicates the number of backup files that can be retained in the backup directory.
    • CIFS: indicates that backup files are stored in the NAS over the CIFS protocol.
      If you select CIFS, set the following parameters:
      • IP Mode: mode of the target IP address.The system automatically selects the IP address mode based on the cluster network type, for example, IPv4 or IPv6.
      • 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.
      • Server Shared Path: indicates the configured shared directory on the NAS server.
      • Maximum Number of Backup Copies: indicates the number of backup files that can be retained in the backup directory.

  8. Click OK to save the settings.
  9. In the Operation column of the created task in the backup task list, choose More > Back Up Now to execute the backup task.

    After the backup task is executed, the system automatically creates a subdirectory for each backup task in the backup directory. The format of the subdirectory name is backup task name_task creation time, and the subdirectory is used to save data source backup files. The format of the backup file name is version_data source_task execution time.tar.gz.

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