Lesson Learned #495: Monitoring DNS Resolution with PowerShell of Azure SQL Server
Today, I worked on a service request where the DNS was providing an incorrect IP address randomly. In this article, I would like to share a PowerShell script that checks the DNS resolution every 5 seconds to help identify the issue.
Azure PostgreSQL Lesson Learned#1:Fix Cannot Execute in a Read-Only Transaction After HA Failover
We encountered a support case involving Azure Database for PostgreSQL Flexible Server where the database returned a read-only error after a High Availability (HA) failover. This blog explains the root cause, resolution steps, and best practices to prevent similar issues. The issue occurred when the application attempted write operations immediately after an HA failover. The failover caused the primary role to switch, but the client continued connecting to the old primary (now standby), which is in read-only mode.
