2020 was a very eventful year at MySQL. Now that we just started 2021, this is a great time to look back at everything we accomplished in 2020, from the anniversary celebrations to the year's best webinars, the best events, the best customer quotes, the best new product addition, the best animated videos, the best social media contribution, the best social media posts and of course, Larry’s best quote and many more.  Here is our "Best of 2020," enjoy!  (We'd love to see your favorites too.  Feel free to share your favorites with us in the comment section)

1. 2020 was our MySQL 25th anniversary which we shared and celebrated with our friends from Java and PHP.  Watch the animated video that celebrates 25 years of community contribution and loyal customers and users.

2020 was a very eventful year at MySQL. Now that we just started 2021, this is a great time to look back at everything we accomplished in 2020, from the anniversary celebrations to the year's best webinars, the best events, the best customer quotes, the best new product addition, the best animated v...

The FOSDEM 2021 MySQL Devroom Schedule is now online.

Thank you again to all who submitted a talk and thank you the to Committee for having build such agenda.

It seems that once again, MySQL Operations and Architecture are very popular.

As you probably know already, this event will be totally online this year.

I would like to thanks the people who were able to jump after some cancellations… virtual events are not the most popular for speakers.

The MySQL Devroom will take place Sunday February 7th form 10AM to 6PM CEST.

Join us as Michael Coburn, Percona Product Manager, discusses two methods to identify and troubleshoot problematic MySQL queries using the RED Method and Percona Monitoring and Management (PMM) Query Analytics. He will also highlight specific Dashboards in PMM that visualize the rate, errors, and duration of MySQL events that may be impacting the stability and performance of your database instance.

Please join Michael Coburn, Product Manager, Percona, on Tuesday, January 26th, 2021 at 2:30 pm for his webinar “Using Percona Monitoring and Management to Identify and Troubleshoot Problematic MySQL Queries”.

Watch Recorded Webinar

If you can’t attend, …

While you can download MySQL as a DMG package, a number of users would prefer to install it as a Docker instance. You won’t find the macOS downloads on the same web site as other downloads. You can use the following macOS download site.

After installing Docker on your macOS, you can pull a copy of the current MySQL Server with the following command:

docker pull mysql/mysql-server

You should create a mysql directory inside your ~/Documents directory with this command:

mkdir ~/Documents/mysql

Then, you should use the cd command to change into the ~/Documents/mysql directory and run this command:

pwd

It should return the following directory: …

In this blog, I am going to explain the different ways of electing the PRIMARY node in MySQL group replication. Before MySQL 8.0.2, primary election was based on the member’s UUID, with the lowest UUID elected as the new primary in the event of a failover.

From MySQL 8.0.2: We can select the node to be promoted as a PRIMARY using the server weight ( group_replication_member_weight ). This can be achieved during the failure of the current primary node.

From MySQL 8.0.12: We can promote any node as a PRIMARY using the function “group_replication_set_as_primary”. This can be set anytime without any failures of nodes.

Scenario:

 I have installed the 3 node group replication cluster. I am using Percona Server for MySQL 8.0.22.

mysql> select …

The aim of Percona Kubernetes Operator for Percona XtraDB Cluster is to be a special type of controller introduced to simplify complex deployments. The Operator extends the Kubernetes API with custom resources. The Operator solution is using Percona XtraDB Cluster (PXC) behind the hood to provide a highly available, resilient, and scalable MySQL service in the Kubernetes space. 

This solution comes with all the advantages/disadvantages provided by Kubernetes, plus some advantages of its own like the capacity to scale reads on the nodes that are not Primary.

Of course, there are some limitations like the way PXC handles DDLs, which may impact the service, but there is always a cost to pay to get something, expecting to have it all for free is unreasonable.     

In this context, we need to …

Percona Kubernetes Operator for Percona XtraDB Cluster comes with two different proxies, HAProxy and ProxySQL. While the initial version was based on ProxySQL, in time, Percona opted to set HAProxy as the default Proxy for the operator, without removing ProxySQL. 

While one of the main points was to guarantee users to have a 1:1 compatibility with vanilla MySQL in the way the operator allows connections, there are also other factors that are involved in the decision to have two proxies. In this article, I will scratch the surface of this why.

Operator Assumptions

When working with the Percona Operator, there are few things to keep in mind:

• Each deployment has to be seen as a single MySQL service as if a single MySQL instance
• The technology used to provide the service may change in time …

While I thought my instructions were clear, it appears there should have been more in my examples for using the MySQL MSI. A key thing that happened is that students opted not to install:

Samples and Examples 8.0.22

Unfortunately, they may not have read the Preface of Alan Beaulieu’s Learning SQL, 3rd Edition where he explains how to manually download the files from the MySQL web site. Here are those, very clear, instructions (pg. XV) with my additions in italics for the MySQL Shell:

First, you will need to launch the mysql command-line client or the mysqlsh command-line shell, and provide a password, and then perform the following steps:

1. Go to https://dev.mysql.com/doc/index-other.html and download the files for the …

If you have ever worked with MySQL, you inevitably came across character sets and collations. In this blog post, we will try to give you a more in-depth look at what those two are and how you should use them.

What Are Character Sets and Collations?

Simply put, character sets in MySQL are sets of symbols and encodings - collations are sets of rules for comparing characters in a character set. In other words, character sets are sets of characters that are legal in a string, while collations are a set of rules used to compare characters in a particular character set. Just how each character set has a default collation, character sets can also have several collations. …