In this blog post, we’ll look at how to set up ProxySQL for high availability.

During the last few months, we’ve had a lot of opportunities to present and discuss a very powerful tool that will become more and more used in the architectures supporting MySQL: ProxySQL.

ProxySQL is becoming more flexible, solid, performant and used every day (http://www.proxysql.com/ and recent http://www.proxysql.com/compare). You can use ProxySQL for high availability.

The tool is a winner when compared to similar ones, and we should all have a clear(er) idea of how to integrate it in our architectures in order to achieve the best results.

The first thing to keep in mind is that ProxySQL doesn’t natively support any high availability solution. We can setup a cluster of …

Today I will present the unique ProxySQL session of the pre-FOSDEM MySQL Day. Alkin Tezuysal will share with the audience ProxySQL Use Case Scenarios

Alkin is Senior Technical Manager at Percona and has extensive experience in enterprise relational databases working in various sectors for large corporations. With more then 20 years of industry experience he has acquired skills for managing large projects from ground up to production. For the past six years he’s been focusing on e-commerce, SaaS and MySQL technologies. He managed and architected database topologies for high volume site at eBay Intl. He has several years of experience on 24X7 support and operational tasks as well as improving …

Hi dear MySQL Community,

I would like to start this post by saying thanks to our sponsors:

Unfortunately, we are missing one sponsor and to not increase the ticket price but at the same time keep the level of quality for food then promised and the same diversity for our world famous Belgian beer patrimony, we are still looking for one …

In a last post, I wrote the two following sentences:

please do not ignore warnings always investigate/fix warnings

I realized that without context, this might be hard to understand.  In this post, I want to give more background about these two sentences.

In my work, I have seen problems solved (wrongly) by ignoring warnings.  Some example that comes to my mind:

upgrading to a new MySQL

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.21, MariaDB 10.0.29, MariaDB Galera Cluster 10.0.29, MariaDB Connector/J 1.5.7, MariaDB Connector/C 2.3.2, and MariaDB Connector/C 3.0.1 Beta. Apart from the Connector/C 3.0.1 Beta these are all stable (GA) releases. See the release notes and changelogs for details. Download MariaDB 10.1.21 Release Notes […]

The post MariaDB 10.1.21 and other releases now available appeared first on MariaDB.org.

CentOS 7 Systemd issue with Percona Cluster is that SST fails to sync the nodes, unable to join cluster group and giving the misleading broken pipe 32 SIG errors.

The post How to Resolve Systemd Issue with Percona XtraDB Cluster on CentOS 7 appeared first on Datavail.

Let’s continue the review of the pre-FOSDEM MySQL Day‘s schedule. Today’s session is the one of Sveta Smirnova: What you wanted to know about your MySQL Server instance, but could not find using internal instrumentation only

Sveta Smirnova works as MySQL Support engineer since year 2006, she is also author of book “MySQL Troubleshooting” and author of JSON UDF functions for MySQL. In years 2006 – 2015 she worked in Bugs Analysis MySQL Support Group in MySQL AB, then Sun, then Oracle. In March 2015 Sveta joined Support Team in Percona. In years 2012-2015 she worked on bugs priority. She was also Support representative in MySQL Backup Development Team. She …

Join Percona’s Chief Evangelist Colin Charles on Wednesday, January 18, 2017, at 7:00 am (PST) / 10:00 am (EST) (UTC-8) as he presents “Lessons from Database Failures.”

MySQL failures at scale can teach a great deal. MySQL failures can lead to a discussion about such topics as high availability (HA), geographical redundancy and automatic failover. In this webinar, Colin will present case study material (how automatic failover caused Github to go offline, why Facebook uses assisted failover rather than fully automated failover, and other scenarios) to look at how the MySQL world is making things better. One way, for example, is using …

On February 3rd, just before Fosdem and the MySQL & Friends Devroom, MySQL’s Community Team is organizing the pre-Fosdem MySQL Day.

Today we will review Dag H. Wanvik‘s session. Dag is spending most of his time implementing Windows Functions to MySQL.

Dag H. Wanvik is a senior MySQL developer for Oracle. Before he did Derby/Java DB development for Oracle/Apache Foundation and he is a Derby committer. He last co-authored JSON support for MySQL 5.7. In his previous existence Dag worked on several compilers and HA distributed data base systems.

The title of his session is MySQL 8.0: Window functions – finally!

Dag will share is current work on a …

The InnoDB log file is the transactional log, it captures all the transactions. The transaction log size is a very important factor in determining the performance of a database engine. The variable innodb_log_file_size represents the transactional log size.  This log size can be changed as follows:
Set the required log file size in the MySQL configuration file.

[mysqld]
innodb_log_file_size=xG

Perform the clean shutdown. This can be verified with the help of MySQL error log. A clean shutdown is also known as slow shutdown. This process will perform a full purge of InnoDB buffer pool. The value of the  …