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AZ503627 - Generally Available: Custom port support for Azure Database for MySQL – Flexible Server

Azure Updates

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Azure update ID

503627

View in Azure Updates

Published

Oct 9, 2025

Status

Launched

Timeline

  • October 2025
    General Availability

Product

Azure Database for MySQL

Tag

Features

Category

Databases

Description

You can now configure a custom port (25001–26000) during server creation for both public and private access-enabled servers—enabling you to integrate more easily with existing applications and improve alignment with security postures. By default, MySQL servers operate on port 3306. 

  

Feature highlights: 

  • Custom port configuration. Specify a port of your choice in the 25001–26000 range during server provisioning. 

  • One port per server. Only one custom port per server is supported. 

 

Supported scenarios: 

  • Server creation 

  • Restore (including cross-port restore) 

  • Read replica creation 

  • High availability (HA) with custom port 

 

Current limitations: 

  • Custom ports can’t be changed after they’re created. 

  • Geo-restore and geo-replication aren’t yet supported. 


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