Some time ago, I was building a new MySQL DB server (5.7.25) and like all DBAs, I have a template of my.cnf that I use for the new instances after changing a few variables based on the instance resources, replication … etc. I had MySQL installed but I struggled on having the service started!

MySQL failed to start, no errors were printed at all in the MySQL error log – or the log was not created from the first place – even no errors in the system log and I had no clue what was going on!

After some digging in, I found the bad guy! The variable secure_file_priv referred to a directory that didn’t exist. When I had the directory created, everything was fine and the service started.

I tried to repeat the same scenario in MySQL 8 and it was much better. The error log indicated the root cause of the issue as below:
2019-03-25T23:39:59.810992Z 0 [ERROR] [MY-010095] [Server] Failed …

In this post, we will discuss a new feature – the MySQL 8.0.17 clone plugin. Here I will demonstrate how easy it is to use to create the “classic” replication, building the standby replica from scratch.

The clone plugin permits cloning data locally or from a remote MySQL server instance. The cloned data is a physical snapshot of data stored in InnoDB, and this means, for example, that the data can be used to create a standby replica.

Let’s go to the hands-on and see how it works.

Installation & validation process of the MySQL 8.0.17 clone plugin

Installation is very easy and it works in the same as installing other plugins. Below is the command line to install the clone plugin:

master …

The blog post How to Compile Percona Server for MySQL 5.7 in Raspberry Pi 3 by Walter Garcia, inspired me to create an updated install of Percona Server for the Raspberry Pi 3+.

This how-to post covers installing from source and being able to use Percona Server for MySQL in any of your maker projects. I have included everything you need to have a complete Percona Server, ready to store data collection for your weather station, your GPS data, or any other project you can think of that would require data collection in a database.

My years of hands-on support of Percona Server enable me to customize the install a bit. I wanted to build a full Percona …

Continuent is pleased to announce that the following new software releases are now available:

• Tungsten Clustering version 5.4.0
• Tungsten Replicator version 5.4.0

Releases 5.4.0 is significant in that it introduces MySQL 8 support, along with many new features, stability improvements and bug fixes.

Highlights common to both products:

Improvements, new features and functionality

• Two new utility scripts have been added to the release to help with setting the Replicator position:
  • tungsten_find_position, which assists with locating information in the THL based on the provided MySQL binary log event position and outputs a dsctl set …

Continuent is pleased to announce that the following new software releases are now available:

• Tungsten Clustering version 6.1.0
• Tungsten Replicator version 6.1.0

Release 6.1.0 is significant in that it introduces MySQL 8 support, along with many new features, stability improvements and bug fixes.

Highlights common to both products:

Improvements, new features and functionality

• Two new utility scripts have been added to the release to help with setting the Replicator position:
  • tungsten_find_position, which assists with locating information in the THL based on the provided MySQL binary log event position and outputs a dsctl set command …

In MySQL 8.0, when using invalid values for date data types, an error is returned. This was not the case in 5.x versions.

Let’s have a look using the table definition of bug 96361:

CREATE TABLE `new_table` (
  `id_table` int(11) NOT NULL AUTO_INCREMENT,
  `text_table` varchar(45) DEFAULT NULL,
  `date_table` date DEFAULT NULL,
  PRIMARY KEY (`id_table`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci

Now we can try the following statement in MySQL 5.7 and MySQL 8.0:

MySQL 5.7.26> SELECT id_table, text_table 
              FROM new_table WHERE date_table = '' OR date_table IS NULL;
Empty set, 1 warning (0.01 sec)

MySQL 5.7.26> show warnings;
+---------+------+-----------------------------------------------------------+
| Level   | Code | Message                                                   | …

Our database tools team is pleased to announce the release of our dbForge MySQL products with a CHECK constraint support. We are looking forward to seeing our customers benefit from it in their everyday work. The fact that MySQL doesn’t support CHECK Constraints syntax caused lots of inconveniences to the developers and DBAs. That deviation […]

WordPress is the largest website builder platform in the world, supporting over 34% of all websites on the internet today. MySQL is a free open source relational database management system that is leveraged across a majority of WordPress sites, and allows you to query your data such as posts, pages, images, user profiles, and more. As any WordPress developer knows, each installation requires a database in the backend, and MySQL is the database of choice for storing and retrieving your WordPress data.

In order for your WordPress website to be able to access, store and retrieve the data in your MySQL database, it needs to be hosted online through a cloud computing service. ScaleGrid offers a convenient way to setup and configure MySQL hosting for your …

Dear MySQL users,

MySQL Connector/NET 6.10.9 is the fifth GA release with .NET Core
now supporting various connection-string options and MySQL 8.0 server
features.

MySQL Connector/NET 6.10.9 is the final release in the 6.10 series.

To download MySQL Connector/NET 6.10.9 GA, see the “Generally Available
(GA) Releases” tab at
http://dev.mysql.com/downloads/connector/net/

Changes in MySQL Connector/NET 6.10.9 (2019-07-29, General Availability)


     * Functionality Added or Changed

     * Bugs Fixed

Functionality Added or Changed


     * Connector/NET now supports IPV6 connections made using
       the classic …

Overview The Skinny

Database Proxies provide a single entry point into MySQL for the calling client applications.

Proxies are wonderful tools to handle various situations like a master role switch to another node for maintenance, or for transparency with read and write connections.

However, when the time comes to perform the switch action, all of the calling clients have been funneled through the proxy, so identification of the calling host from the database itself becomes difficult.

The Problem What is going on?

Let’s illustrate how not knowing the source of a client connection can be an issue for the database administrator…

In the following diagram, three client applications connect to a Tungsten Cluster via the Connector proxy:

…