What should I pay attention to when choosing the self built database access method on ECs?

choice ECS The access method of self built database on , What should I pay attention to ？

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Take the answer 1：

We need to pay attention to 2 spot ：

• ECS The server has security group restrictions . Under normal circumstances , When the selection is finished ECS Example ID, Fill in the connection information of the database , And then click DTS Source side database “ Test connection ” after ,DTS Will automatically DTS Server's IP Add end to ECS In the security group of . Pictured 3-9. If you encounter connectivity problems , Please check whether this is normal .

• Except security group ,ECS There is also a firewall in the operating system deployed on the upper part , Please ensure that the firewall has also made a response to the entry direction release rules .

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