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What Should I Do If an ECS Cannot Connect to a TaurusDB Instance?
Updated on 2025-07-22 GMT+08:00
What Should I Do If an ECS Cannot Connect to a TaurusDB Instance?
Perform the following steps to identify the problem:
- Check whether the ECS and TaurusDB instance are located in the same VPC.
- If they are in the same VPC, go to 2.
- If they are in different VPCs, create an ECS in the VPC where the instance is located.
- Check whether a security group has been created for the ECS.
- If a security group has been created, check whether its rules are appropriate.
- If no security group has been created, go to the VPC console from the ECS details page and create a security group.
- Check whether the ECS can connect to the instance over the instance port.
The default port of a cluster TaurusDB instance is 3306.
telnet <IP address> {Port number}
- If the ECS can connect to the instance, no further action is required.
- If the ECS still cannot connect to the instance port, contact technical support.
Parent topic: Database Connections
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