Planet MySQL HA Blog
The Planet MySQL HA Blog aggregates content from sources that cover topics related to high availability (HA) for MySQL databases.
MySQL Meetups and Events with 30 years of MySQL Celebration! - UPDATED
meetups&events with 30Y ann.celebration
High Availability and Disaster Recovery with the MySQL Operator for Kubernetes
The MySQL Operator for Kubernetes supports the lifecycle of a MySQL InnoDB Cluster inside a Kubernetes Cluster. This blog post will introduce you to the recently added MySQL InnoDBCluster ClusterSet support added to the Operator in the 9.3.0-2.2.4 version. The EE Helm charts will be used as the ClusterSet support is a part of the MySQL Operator for Kubernetes Enterprise Edition.
MySQL Operator for Kubernetes Hands on Introduction with Helm
In this blog post the MySQL Operator for Kubernetes will be explored by using the operator Helm charts. Scenarios of simple Operator installation and creation of MySQL InnoDBClusters will be shown. Advanced topics, like usage of air-gapped container registry will also be presented.
PostgreSQL active-active replication, do you really need it?
Before we start, what is active-active?
Active-active, also referred to as multi-primary, is a setup where multiple database nodes can accept writes at the same time and propagate those changes to the others. In comparison, regular streaming replication in PostgreSQL allows only one node (the primary) to accept writes. All other nodes (replicas) are read-only and follow changes.
In an active-active setup:
- There is no single point of write.
- Applications can write to any node.
- The database needs a way to sort out…
HeatWave MySQL: Exciting New Features and Updates for FY 2025/26 Q4–Q1
HeatWave MySQL continues to evolve, bringing powerful enhancements that bolster security, improve backup retention, and streamline partition management. Over the last two quarters (March–June 2025), several notable updates have been introduced, enhancing security controls, optimizing data management, and delivering greater flexibility for developers and businesses alike.
Enhancing Security in OCI: Using Network Security Groups with HeatWave MySQL
Security is a foundational principle for cloud deployments, especially when dealing with mission-critical workloads like those managed by HeatWave MySQL. As applications and environments scale, fine-grained network control becomes critical not just for protecting sensitive data, but also for isolating systems, enforcing boundaries, and minimizing lateral movement within a Virtual Cloud Network (VCN).
Interesting Troubleshooting of a MySQL Crash : filling then freeing the disk
I recently troubleshoot an interesting MySQL crash, and I think it is worth sharing (with the related bugs). MySQL crashed when the disk was full, you can see the free disk graph below. The Y-axis is in the tens of GiB scale and the X-axis is in the hour scale. Can you guess what happened ?
Just to make sure we agree on the meaning of the graph above, let's describe it
Interesting Binary Logging Optimization in MariaDB
As I wrote in a LinkedIn post, I am working on a blog post related to binary logging of big transactions. I thought I would split this post in two, so here is the first part where I cover the recent binary logging optimization in MariaDB and its unspoken advantage.
(And this post is a way for me to see if Planet MySQL is still blocking posts mentioning MariaDB. This censorship /
What's new in PMM 3.2.0: Five major improvements you need to know
PMM 3.2.0 brings some long-awaited fixes and new capabilities. You can now install PMM Client on Amazon Linux 2023 with proper RPM packages, get complete MySQL 8.4 replication monitoring, and track MongoDB backups directly in PMM.
Here’s what’s most important in this release:
1. Native Amazon Linux 2023 support - no more workaroundsWhat’s new: If you’ve been running PMM Client on AL2023 and dealing with complex manual installations, those days are over. You can now install PMM Client through native RPM packages just like any other supported platform.
HeatWave MySQL security series: Achieving PCI DSS 4.0 Compliance
For the Financial services Industry, PCI DSS compliance ensures the secure handling of cardholder data by organizations that process, store, or transmit credit card information. Payment Card Data Security Standard (PCI DSS) is designed to protect card holder information and ensure a secure environment for handling credit card data.While this is primarily used to secure credit card data, adhering to PCI DSS standards ensures overall security of your applications.