Help Center/ Relational Database Service_RDS for MySQL/ User Guide/ Database Proxy (Read/Write Splitting)/ Database Proxy Configurations/ Changing the Read/Write Splitting Address
Updated on 2025-08-20 GMT+08:00
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Changing the Read/Write Splitting Address

Scenarios

After database proxy is enabled, applications access the database through the read/write splitting address. This section describes how to change the read/write splitting address, if needed.

Precautions

Changing the read/write splitting address will interrupt database connections and services. Therefore, change the read/write splitting address during off-peak hours or when services are stopped.

Constraints

The new IP address is not in use and must be in the same subnet as the RDS for MySQL instance.

Procedure

You can change the read/write splitting address for DB instances with read/write splitting enabled.

  1. Click in the upper left corner and select a region.
  2. Click in the upper left corner of the page and choose Databases > Relational Database Service.
  3. On the Instances page, click the target instance name to go to the Overview page.
  4. Click Database Proxy in the navigation pane on the left. On the displayed page, click Modify next to the Read/Write Splitting Address field.

    Figure 1 Read/write splitting area (single-proxy)
    Figure 2 Read/write splitting area (multi-proxy)

  5. In the displayed dialog box, enter a new address. Click OK.

    In-use IP addresses cannot be used as read/write splitting addresses.

    Figure 3 Changing the read/write splitting address

Parent Topic: Database Proxy Configurations