In this blog, I am going to explain the complete process involved in the MySQL group replication setup using SSL. The blog covers the complete MySQL config files as well as steps. I used the following aspects for my testing purpose.

• MySQL 9.3.0 Inn ovation release
• Ubuntu 24.10
• 3 physical servers

I also enabled the hostname based authentications between the three VMs. So that, I don’t need to provide the IPs explicitly each time. To achieve this, I used to update the the file “/etc/hosts” with following entries.

root@gr1:~# cat /etc/hosts | grep gr
198.19.249.194 gr1 gr1
198.19.249.116 gr2 gr2
198.19.249.163 gr3 gr3

---- Test
root@gr1:~# telnet gr2 3306
Trying 198.19.249.116...
Connected to gr2.
---- Works!

Creating SSL certificates:

As I am going to setting up the SSL based group replication, I need to create the required certificates …

On April 22-23rd, 2025, the Oracle Conference Center in Redwood Shores, California, buzzed with excitement as the MySQL and HeatWave Summit 2025 kicked off. The MySQL and HeatWave Summit is the largest gathering of MySQL users, developers and product experts in the world. The summit brought together developers, DBAs, experts, and users for this two day event packed with learning, networking, and celebration of MySQL’s latest advancements.

On April 22-23rd, 2025, the Oracle Conference Center in Redwood Shores, California, buzzed with excitement as the MySQL and HeatWave Summit 2025 kicked off. The MySQL and HeatWave Summit is the largest gathering of MySQL users, developers and product experts in the world. The summit brought together developers, DBAs, experts, and users for this two day […]

Announcing Vitess 22 # The Vitess maintainers are happy to announce the release of version 22.0.0, along with version 2.15.0 of the Vitess Kubernetes Operator. This release is the first to benefit from a 6-month-long development cycle, after our recent change to the release cadence. Version 22.0.0 comes with significant enhancements to query serving and cluster management. These changes have allowed Vitess to be more performant and easier to operate compared to version 21.

While doing benchmarks on 5.7 and 8.0, I came across a performance regression in MySQL 8.0 over 5.7 and opened a bug (Bug #111353 : 3x Performance Regression from 5.7 to 8.0 on ALTER TABLE FORCE).  There has been recent activity on this bug, showing an easy workaround.  This, even if it is known since 16 July 2024, has not been talked about much, so this deserves a blog post.

This blog post will describe how to start working with MySQL HeatWave in OCI. We will interconnect MySQL HeatWave instance with OCI Compute instance and even import data and execute SQL commands over them. First, I will describe the overall picture of what we want to achieve. Then I’ll walk you through the setup of […]

Connecting to MySQL HeatWave in OCI

Recently, a friend reached out to me for help after encountering an error while restoring a MySQL dump during an upgrade from MySQL 8.0 to 8.4. The error read: At…

The post A Unique Foreign Key issue in MySQL 8.4 first appeared on Change Is Inevitable.

Recently, I encountered a Percona Monitoring and Management (PMM) server that was rapidly approaching complete disk exhaustion. This post outlines the steps taken to identify the issue and reclaim disk…

The post How to Resolve Disk Space Issues in PMM: Case Study first appeared on Change Is Inevitable.

When using the Percona Operator for MySQL based on Percona XtraDB Cluster (PXC), it’s common to encounter scenarios where cluster nodes request a full State Snapshot Transfer (SST) when rejoining the cluster. One typical scenario where a State Snapshot Transfer (SST) is required is when a node has been offline long enough that the GCache […]