全量迁移失败报错，关键词“Timed out after 60000 ms while waiting to connect”

场景描述

MongoDB->DDS实时迁移场景，全量迁移报错，日志提示信息：service DATAMOVE failed, cause by: [reason]:Failed to connect to database due to network, check the network between the DRS and the database or try again later.[message]:apply event=[type=table_data, batch_index_in_shard=144, table_schema=***, table_name=***, record_num=8510] occur error, msg=Timed out after 60000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{*** type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused (Connection refused)}}]。

可能原因

• 网络不稳定导致写入目标库时建立连接超时。
• 目标库系统繁忙导致建立连接超时。

处理方法

1. 检查目标库运行状态是否正常。
2. 检查DRS迁移实例和目标库之间的网络是否存在丢包、重传等情况。
3. 联系华为工程师调整默认的超时时间。