This topic describes how to use the metadata migration tool provided by ApsaraMQ for Kafka to migrate topic metadata from one ApsaraMQ for Kafka instance to another ApsaraMQ for Kafka instance.

Prerequisites

Before you migrate topic metadata between Message Queue for Apache Kafka instances, make sure that the following operations are complete:
Important
  • After the migration is complete, the relevant topic in the source ApsaraMQ for Kafka instance is not deleted. Instead, a new topic with the same configuration is created in the destination ApsaraMQ for Kafka instance.
  • Only the topic configuration is migrated. The messages in the source topic are not migrated.

Procedure

  1. Start the command-line tool.
  2. Run the cd command to switch to the directory where the migration tool is located.
  3. Run the following command to check the topic metadata to be migrated:
    java -jar kafka-migration.jar TopicMigrationFromAliyun --sourceAk <yoursourceAccessKeyId> --sourceSk <yoursourceAccessKeySecret> --sourceRegionId <yoursourceRegionId> --sourceInstanceId <yoursourceInstanceId> --destAk <yourdestAccessKeyId> --destSk <yourdestAccessKeySecret> --destRegionId <yourdestRegionId> --destInstanceId <yourdestInstanceId>
    ParameterDescription
    sourceAkThe AccessKey ID of the Alibaba Cloud account to which the source ApsaraMQ for Kafka instance belongs.
    sourceSkThe AccessKey secret of the Alibaba Cloud account to which the source ApsaraMQ for Kafka instance belongs.
    sourceRegionIdThe ID of the region where the source ApsaraMQ for Kafka instance is located.
    sourceInstanceIdThe ID of the source ApsaraMQ for Kafka instance.
    destAkThe AccessKey ID of the Alibaba Cloud account to which the destination ApsaraMQ for Kafka instance belongs.
    destSkThe AccessKey secret of the Alibaba Cloud account to which the destination ApsaraMQ for Kafka instance belongs.
    destRegionIdThe ID of the region where the destination ApsaraMQ for Kafka instance is located.
    destInstanceIdThe ID of the destination ApsaraMQ for Kafka instance.
    The following code provides an example of the topic metadata to be checked: 
    15:13:12 INFO - cmd=TopicMigrationFromAliyun, request=null, response={"total":4,"code":200,"requestId":"1CBAB340-2146-43A3-8470-84D77DB8B43E","success":true,"pageSize":10000,"currentPage":1,"message":"operation success.","topicList":[{"instanceId":"alikafka_pre-cn-0pp1cng20***","localTopic":false,"createTime":1578558314000,"regionId":"cn-hangzhou","statusName":"Running","topic":"agdagasdg","remark":"agdadgdasg","partitionNum":12,"compactTopic":false,"status":0,"tags":[]},{"instanceId":"alikafka_pre-cn-0pp1cng20***","localTopic":false,"createTime":1578558294000,"regionId":"cn-hangzhou","statusName":"Running","topic":"135215","remark":"1315215","partitionNum":12,"compactTopic":false,"status":0,"tags":[]},{"instanceId":"alikafka_pre-cn-0pp1cng20***","localTopic":false,"createTime":1578558214000,"regionId":"cn-hangzhou","statusName":"Running","topic":"1332","remark":"13414","partitionNum":12,"compactTopic":false,"status":0,"tags":[]},{"instanceId":"alikafka_pre-cn-0pp1cng20***","localTopic":false,"createTime":1578558141000,"regionId":"cn-hangzhou","statusName":"Running","topic":"aete","remark":"est","partitionNum":12,"compactTopic":false,"status":0,"tags":[]}]}
15:13:12 INFO - Will create topic:agdagasdg, isCompactTopic:false, partition number:12
15:13:12 INFO - Will create topic:135215, isCompactTopic:false, partition number:12
15:13:12 INFO - Will create topic:1332, isCompactTopic:false, partition number:12
15:13:12 INFO - Will create topic:aete, isCompactTopic:false, partition number:12
  4. Run the following command to commit the topic metadata to be migrated:
    java -jar kafka-migration.jar TopicMigrationFromAliyun --sourceAk <yoursourceAccessKeyId> --sourceSk <yoursourceAccessKeySecret> --sourceRegionId <yoursourceRegionId> --sourceInstanceId <yoursourceInstanceId> --destAk <yourdestAccessKeyId> --destSk <yourdestAccessKeySecret> --destRegionId <yourdestRegionId> --destInstanceId <yourdestInstanceId> --commit
    ParameterDescription
    commitCommits the topic metadata to be migrated.
    The following code provides an example of the output generated after the topic metadata to be migrated is committed: 
    16:38:30 INFO - cmd=TopicMigrationFromAliyun, request=null, response={"code":200,"requestId":"A0CA4D70-46D4-45CF-B9E0-B117610A26DB","success":true,"message":"operation success"}
16:38:30 INFO - TopicCreate success, topic=agdagasdg, partition number=12, isCompactTopic=false
16:38:36 INFO - cmd=TopicMigrationFromAliyun, request=null, response={"code":200,"requestId":"05E88C75-64B6-4C87-B962-A63D906FD993","success":true,"message":"operation success"}
16:38:36 INFO - TopicCreate success, topic=135215, partition number=12, isCompactTopic=false
16:38:42 INFO - cmd=TopicMigrationFromAliyun, request=null, response={"code":200,"requestId":"9D54F6DB-6FA0-4F6D-B19A-09109F70BDDA","success":true,"message":"operation success"}
16:38:42 INFO - TopicCreate success, topic=1332, partition number=12, isCompactTopic=false
16:38:49 INFO - cmd=TopicMigrationFromAliyun, request=null, response={"code":200,"requestId":"6C265013-D15E-49AE-BE55-BF7657ADA1B7","success":true,"message":"operation success"}
16:38:49 INFO - TopicCreate success, topic=aete, partition number=12, isCompactTopic=false
  5. Check whether the topic is migrated.
    1. Log on to the ApsaraMQ for Kafka console.
    2. In the Resource Distribution section of the Overview page, select the region where your instance is deployed.
    3. On the Instances page, click the name of the instance that you want to manage.
    4. In the left-side navigation pane, click Topics.
    5. On the Topics page, check whether the topic is displayed.