The latest from the MySQL community

Thanks to everyone who participated in this week’s webinar on Performance Tuning for MySQL & MariaDB!

If you’ve missed the live session or would like to watch it again, it is now available online to view; especially if any of the following questions sound familiar to you:

You’re running MySQL or MariaDB as backend database, how do you tune it to make best use of the hardware? How do you optimize the Operating System? How do you best configure MySQL or MariaDB for a specific database workload?

A database server needs CPU, memory, disk and network in order to function. Understanding these resources is important for anybody managing a production database. Any resource that is …

Please join Percona’s Chief Evangelist Colin Charles on Thursday, June 28th, 2018, as he presents Securing Database Servers From External attacks at 7:00 AM PDT (UTC-7) / 10:00 AM EDT (UTC-4).

Register Now

A critical piece of your infrastructure is the database tier, yet people don’t pay enough attention to it judging by how many are bitten via poorly chosen defaults, or just a lack understanding of running a secure database tier. In this talk, I’ll focus on MySQL/MariaDB, PostgreSQL, and MongoDB, and cover external authentication, auditing, encryption, SSL, firewalls, replication, and more gems from over a decade of consulting in this space from Percona’s 4,000+ …

As promised, here is a post more detailed on how to create a MySQL InnoDB Cluster using MySQL Shell and the AdminAPI.

First of all, as a good practice is never enough repeated, whatever the version of MySQL you are using, please use the latest MySQL Shell ! So if you are using 5.7, please use MySQL Shell 8.0.11. See this compatibility matrix or this official one.

dba class

The AdminAPI can be accessed by the MySQL Shell via the dba object. The reference manual for this class is here. The Shell …

We are excited to inform our users that we have released new versions of dbForge Schema Compare for MySQL, dbForge Data Compare for MySQL, dbForge Query Builder for MySQL, dbForge Data Generator for MySQL, and dbForge Documenter for MySQL. We have introduced brand new connectivity features, including support for the latest MySQL Server, v8.0, and […]

Often it is necessary to convert an unencrypted RDS instance into an encrypted one. And it is usually expected that this process is done with minimum or no downtime. Unfortunately, one can only enable encryption when the instance is created. However, there is still hope, as there are a couple of workarounds to encrypt your existing data.

In this article, I will discuss two different solutions to achieve this result.

Solution 1: Create a snapshot and copy the snapshot to a new encrypted snapshot:

• Create a manual snapshot of the unencrypted RDS instance
• Go to Snapshots from the left panel and choose the snapshot just created
• From the Actions, choose Copy snapshot option and enable encryption
• Select the new encrypted snapshot
• Go to Actions and …

Database schema is not something that is written in stone. It is designed for a given application, but then the requirements may and usually do change. New modules and functionalities are added to the application, more data is collected, code and data model refactoring is performed. Thereby the need to modify the database schema to adapt to these changes; adding or modifying columns, creating new tables or partitioning large ones. Queries change too as developers add new ways for users to interact with the data - new queries could use new, more efficient indexes so we rush to create them in order to provide the application with the best database performance.

So, how do we best approach a schema change? What tools are useful? How to minimize the impact on a production database? What are the most common issues with schema design? What tools can help you to stay on top of your schema? In this blog post we will give you a short overview of how …

Please join Percona’s Principal Support Escalation Specialist Sveta Smirnova as she presents Troubleshooting Best Practices: Monitoring the Production Database Without Killing Performance on Wednesday, June 27th at 11:00 AM PDT (UTC-7) / 2:00 PM EDT (UTC-4).

Register Now

During the MySQL Troubleshooting webinar series, I covered many monitoring and logging tools such as:

• General, slow, audit, binary, error log files
• Performance Schema
• Information Schema
• System …

In the previous article we researched MySQL Client / Server Protocol using WireShark. Now lets start to write our codes in python to simulate MySQL native client. Ready codes are here: Github repo

First of all we have to create MYSQL_PACKAGE class. MYSQL_PACKAGE class is the parent of all other package classes (HANDSHAKE_PACKAGE, LOGIN_PACKAGE, OK_PACKAGE and etc.)

class MYSQL_PACKAGE: “””Data between client and server is exchanged in packages of max 16MByte size.”””    def __init__(self, resp= b”):       self.resp = resp       self.start =0       …

I’ve been posting quite a bit about Docker as I’ve been working with it a lot as of late. I thought I would share something interesting I discovered a couple weeks ago while working on setting up a Docker container-based lab environment for training purposes here at Pythian, specifically when attempting to install the MySQL-python package inside the container.

I know what you’re thinking: why is he trying to install a package in a Docker container? Doesn’t that go against the “Docker run and forget about it” philosophy? Sure, but in this case, I’m looking to add orchestration via ansible, which I don’t think is completely out of the question in order to coordinate your Docker containers for something like replication. This requires using the …

Kubernetes, and its most popular distribution OpenShift, receives a lot of interest as a container orchestration platform. However, databases remain a foreign entity, primarily because of their stateful nature, since container orchestration systems prefer stateless applications. That said, there has been good progress in support for StatefulSet applications and persistent storage, to the extent that it might be already comfortable to have a production database instance running in Kubernetes. With this in mind, we’ve been looking at running Percona XtraDB Cluster in Kubernetes/OpenShift.

While there are already many examples on the Internet of how to start a single MySQL instance in Kubernetes, for serious usage we need to provide:

• High Availability: how can we guarantee availability …