The latest from the MySQL community

Percona Server for MySQL 8.0.18 ships all functionality to run Group Replication and InnoDB Cluster setups, so I decided to evaluate how it works and how it compares with Percona XtraDB Cluster in some situations.

For this I planned to use three bare metal nodes, SSD drives, and a 10Gb network available for in-between nodes communication, but later I also added tests on three bare metal nodes with NVMe drives and 2x10Gb network cards.

To simplify deployment, I created simple ansible scripts.

Load Data

The first initial logical step is to load data into an empty cluster, so let’s do this with our sysbench-tpcc …

MySQL 8.0.19 came out this week and can he downloaded here.   One of the first things I do when a new release happens is look at the release notes.  The release note cover the changes from the previous versions and the latest edition edition details some interesting new stuff.

Password Locking
MySQL now enables administrators to configure user accounts such that too many consecutive login failures due to incorrect passwords cause temporary account locking. The required number of failures and the lock time are configurable per account, using the FAILED_LOGIN_ATTEMPTS and PASSWORD_LOCK_TIME options of the CREATE USER and ALTER USER statements.

YEAR(4) and …

At 13th January 2020, MySQL Community has released the very latest MySQL 8.x version ( 8.0.19 ). The MySQL 8.0.19 has released with the good amount of bug fixes and the cool features . InnoDB ReplicaSet is one of them and most interesting feature for me . In this blog I am going to explain about the configuration of the MySQL InnoDB ReplicaSet and how to do the switchover smoothly with InnoDB ReplicaSet .

What is InnoDB ReplicaSet ?

from MySQL document,

The AdminAPI includes support for InnoDB ReplicaSet, that enables you to administer a set of MySQL instances running asynchronous GTID-based replication in a similar way to InnoDB cluster. A InnoDB ReplicaSet consists of a single primary and multiple secondaries 

Note : For configure the InnoDB ReplicaSet , the servers should be configured with the GTID .

InnoDB ReplicaSet configuration …

In this blog post, I’d like to share some experiences in setting up a Vitess environment for local tests and development on OSX/macOS. As previously, I have presented How To Test and Deploy Kubernetes Operator for MySQL(PXC) in OSX/macOS, this time I will be showing how to Run Vitess on Kubernetes.

Since running Kubernetes on a laptop is only experimental, I had faced several issues going through straight forward installation steps so I had to apply a few workarounds to the environment. This setup will have only minimum customization involved.

For a high-level overview of Vitess, please visit Part I of this series, …

The promise of DBaaS like RDS is to reduce operational overhead (among other things) and one of the stellar cases is upgrades (major and minor). The suggested procedure involves just a couple of steps. For example, using AWS Console, you can enable “Auto minor upgrade” or modify the DB instance and schedule the upgrade to run in the next maintenance window.

But, both these options are risky because the upgrade process will start during the maintenance window but it is NOT guaranteed that the upgrade will be completed within the specified duration. 

The Problem

RDS performs a few extra steps to ensure the data consistency and rollback, making the minor version upgrade a time-consuming process:

• It takes a backup (if automated backups are enabled) prior to starting the upgrade process.
• Performs slow shutdown after setting …

Django 3 is released with full async support! In this tutorial, we'll see by example how to create a CRUD application from scratch and step by step. We'll see how to configure a MySQL database, enable the admin interface, and create the django views.

We'll be using Bootstrap 4 for styling.

You'll learn how to:

Implement CRUD operations, Configure and access a MySQL database, Create django views, templates and urls, Style the UI with Bootstrap 4

Django 3 Features

Django 3 comes with many new features such as:

MariaDB support: Django now officially supports MariaDB 10.1+. You can use MariaDB via the MySQL backend, ASGI support for async programming, Django 3.0 provides support for running as an ASGI application, making Django fully async-capable Exclusion constraints on PostgreSQL: Django 3.0 adds a new ExclusionConstraint class which adds exclusion constraints on PostgreSQL, etc.

…

Dear MySQL users,

MySQL Shell 8.0.19 is a maintenance release of MySQL Shell 8.0 Series (a
component of the MySQL Server). The MySQL Shell is provided under
Oracle’s dual-license.

MySQL Shell 8.0 is highly recommended for use with MySQL Server 8.0 and
5.7. Please upgrade to MySQL Shell 8.0.19.

MySQL Shell is an interactive JavaScript, Python and SQL console
interface, supporting development and administration for the MySQL
Server. It provides APIs implemented in JavaScript and Python that
…

A few days ago I wrote about how grossly outdated statistics returned through MySQL’s Information_Schema can be. In that post, Øystein Grøvlen suggested taking a look at mysql.innodb_table_stats and mysql.innodb_index_stats as a better source of information. Let’s do just that!

Let’s start with the good news. Unlike MySQL Data Dictionary Tables (mysql.table_stats, etc),  mysql.innodb_table_stats and mysql.innodb_index_stats can be queried by the user. They also contain a lot of interesting statistics. Before we get to that though, let’s examine where those tables come from in more detail.

As the manual tells us, these tables are storing …

So far, I have written two tutorial blogs about MySQL InnoDB Cluster . Those blogs describe about the InnoDB Cluster configuration and how to integrate InnoDB Cluster with the MySQL router . You can get them through the below links .

• MySQL InnoDB Cluster Tutorial 1 ( Group Replication + MySQL Shell )
• MySQL InnoDB Cluster Tutorial 2 ( Integrating with MySQL router )

In this blog I am going to explain the following two things ,

• How to switch the cluster to ( single | multi ) primary mode without downtime ?
• How to make the specific node as the Primary member without …

I am writing a tutorial on the MySQL Document Store for the sold out (sorry) pre-FOSDEM MySQL days.  For those who do not write such exercise they are often a difficult task as you have a limited time to convey information, need to provide vivid examples, and create exercises that give a good idea of what the topic is all about.  And my personal preference is to write once and use the tutorial at other events (please let me know if you have such an event).

Indexing records is a well know performance step when creating databases, SQL or NoSQL.  And back in June of 2017 I wrote a blog post on using createIndex() to index documents in the MySQL Document Store. And as part of creating the tutorial I referred to that blog post as a reference and was quite surprised that it was not working.

What happened? Well back in 8.0.11 the function was revised and it is no longer a series of chained calls but …