Here at Pythian we get a lot of exposure to new technologies and implementation strategies via the work we do internally and for our clients. The most noteworthy technology stack that I’ve seen get a lot of traction in the MySQL community recently is the high availability stack including Orchestrator, Consul and ProxySQL. 

I won’t dive too deeply into the details of this implementation as there are several blog posts that our team has submitted on this topic, but the key thing I want you to keep in mind for this particular topic is the usage of Consul as a “source of truth” for the state of your MySQL replication clusters. If Orchestrator or its adjacent scripts are running as expected, Consul should always have the latest information pertaining to the state of your cluster. This is incredibly valuable. In fact, …

Our recent survey showed that many organizations saw unexpected growth around cloud and data. Unexpected bills can become a big problem, especially in such uncertain times. This blog post talks about how Kubernetes scaling capabilities work with Percona Kubernetes Operator for Percona XtraDB Cluster (PXC Operator) and can help you to control the bill.

Resources

Kubernetes is a container orchestrator and on top of it, it has great scaling capabilities. Scaling can help you to utilize your cluster better and do not waste money on excessive capacity. But before scaling we need to understand what capacity is and how Kubernetes manages CPU and memory resources.

There are two resource concepts that you should be aware of: …

In this article, you’ll learn how to connect to Azure Database for MySQL and discover three scenarios of database migration from MySQL to Azure using dbForge Studio for MySQL. The article demonstrates how to connect to Azure Database for MySQL Server via dbForge Studio for MySQL. It also explores three common approaches of using the […]

The post Azure Database for MySQL: How to Connect and Migrate Databases with dbForge Studio for MySQL appeared first on Devart Blog.

Watch the replay of this Zero Downtime MySQL use case webinar with Continuent CEO Eero Teerikorpi and find out how Kentucky Lottery achieved continuous MySQL operations with high availability, data protection, and disaster recovery using a Composite Active/Passive Tungsten Clustering Topology.

Tags:  Webinar MySQL use case tungsten clustering mysql cluster continuous mysql operations …

 This is a topic that overall you never should have to do... Why? Because you created backups right... You have tested and know the backups work so you can just restore those backups and get your lost schema and related data... 

However that one instance in the corner office.. you never got around to setting up.. it not that important... just crashed and now you realize how you actually do use it... 

All is not lost..  

MySQL released their MySQL utilities awhile back and since been replaced more with the MySQL Shell.  

• https://downloads.mysql.com/archives/utilities 
• https://dev.mysql.com/downloads/shell/

mysqlfrm is still very handy though when needing to pull out the schema from an …

Here at Pythian we like to pay attention to what brings people to our site, and one of the main queries we’ve been seeing is “How can I allow a remote MySQL database connection?” Since our mission is to help you love your data, we asked Matthias Crauwels, Lead Database Consultant on one of Pythian’s MySQL teams to address this topic. Over to Matthias!

I’m hoping this may be the start of a series of posts where I can share some common MySQL knowledge in a (hopefully) clear and understandable manner. So let’s get started.

Technical requirements

Historically MySQL allows a client to connect in two different ways. You can either use a local socket solution (on a Linux/Unix system this is called a Unix socket, whereas on Windows systems it’s a named pipe) or via a TCP connection to a listening port (by default 3306).

Since the introduction of MySQL 8.0, a third way is also available using a newer …

MySQL Ndb Cluster provides durability for data by default via logging and checkpointing.

In addition, users can take backups at any time, which allows for disaster recovery, replication synchronisation, data portability and other use cases.

This post looks at the backup and restore mechanisms in MySQL Ndb Cluster.

MySQL Ndb Cluster architecture recap

MySQL Ndb Cluster is a distributed SQL relational database :

• Designed for low overhead read + write scale out, high availability, high throughput and low latency.
• Providing distributed parallel joins, transactions, row locks, foreign keys.
• Data is primarily stored and managed by a set of independent data node processes.
• Data is accessed via distributed MySQL servers and …

Rolling sum and average query results are possible by combining the aggregate functions SUM() or AVG() with the OVER() clause, making for powerful analytic queries. I recently learned how to compute a rolling average or sum of values by using the Windowing option of the OVER() clause, applying the concepts to a data set I am familiar with. I wanted to share my learning with any readers who might be interested…

Image by Steve Buissinne from …

Percona Server for MySQL 8.0 offers a number of clustering solutions for high availability out-of-the-box:

• Single-master:

  • Asynchronous replication
  • Semi synchronous replication
• Multi-master:
  • Group replication
  • InnoDB Cluster (a combination of MySQL Router, MySQL Shell and Percona Server with Group Replication)

The most popular, battle-tested, and highly scalable solution is, of course, asynchronous replication. In this blog post, we are going to deploy a Percona Server replication setup specifically for high availability. The instructions described here are based on CentOS 7.

Installing Percona Server

For high availability, we need at least two nodes …

Presentation of some of the new features of MySQL 8.0.22 released on October 19th, 2020.

The post MySQL 8.0.22 New Features Summary first appeared on dasini.net - Diary of a MySQL experts.