Azure Database for MySQL
An Azure managed MySQL database service for app development and deployment.
Aborted connections spike and service disruption on Azure MySQL Flexible Server
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Saeed C
0
Reputation points
We experienced a major service disruption on our Azure Database for MySQL – Flexible Server instance (ecco-db2) around 2:00 AM BST on 8 June 2025. We are seeking a Root Cause Analysis (RCA) for the following incident:
Summary of Observations:
- Aborted Connections: Over 30,000 aborted connections were recorded during a short time span, and is still on going till today (1st Aug 2025).
- Host CPU Usage: Spiked to 99–100%, indicating potential saturation or runaway queries.
- Memory Usage: Dropped significantly during the same window, implying a possible server restart, crash or failover.
Can you provide a Root Cause Analysis (RCA) for the aborted connection on 8 June and advise why aborted connections are still ongoing as of 1 August 2025?
Thanks in advance.
Azure Database for MySQL
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Mahesh Kurva 6,850 Reputation points Microsoft External Staff Moderator2025-08-01T18:09:43.21+00:00 Hi Saeed C,
I kindly request you to please share the details requested in the private message for further investigation.
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Mahesh Kurva 6,850 Reputation points Microsoft External Staff Moderator
2025-08-04T02:01:27.7466667+00:00 Hi Saeed C,
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
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