There are many MySQL related IRC discussion channels as the ecosystem itself grows. I join the following. Are there any that I’m missing?

Freenode (irc.freenode.net):

• #mysql – main channel for all kinds of end user MySQL related discussions (the noisiest of the lot, naturally)
• #maria – main channel for all kinds of MariaDB related discussions
• #webscalesql – for all kinds of WebScaleSQL discussions
• #percona – main channel for all kinds of Percona related discussions
• #tokutek – main channel for Tokutek discussions (TokuDB or TokuMX)
• SkySQL-specific channels: #maxscale and #mariadb-mgr

OFTC (irc.oftc.net):

• #debian-mysql – for all kinds of Debian MySQL related bits (packaging, bugs, etc.)

Related posts:

1. …

Oracle OpenWorld, taking place Sept 28-Oct 2, 2014 in San Francisco, is the world’s largest gathering of technology and business professionals. The conference includes several dedicated programs focused on specific technologies and solutions, such as Human Capital Management, Customer Experience, and MySQL.

In order to bring more consistency, clarity and visibility to those programs, they have all been renamed "Central". MySQL Connect therefore becomes "MySQL Central @ OpenWorld", and we will use this name moving forward.

MySQL Central @ OpenWorld offers you the opportunity to hear directly from Oracle’s MySQL engineers about the latest MySQL features, enhancements and plans. Best Practices sessions by MySQL customers, community members and partners will help you understand how to make the most of MySQL.

MySQL Central @ OpenWorld includes:

Here on the Percona MySQL Support team, we often see issues where a customer is complaining about replication delays – and many times the problem ends up being tied to MySQL replication slave lag. This of course is nothing new for MySQL users and we’ve had a few posts here on the MySQL Performance Blog on this topic over the years (two particularly popular post in the past were: “Reasons for MySQL Replication Lag” and “Managing Slave Lag with MySQL Replication,” both by Percona CEO Peter Zaitsev).

In …

MySQL, the original brand, the one developed by the MySQL team at Oracle, is steadily evolving. You can feel it if you try every new release that comes out of the milestone release cycle. Or even if you don’t try all of them, just testing a release once in a while gives you something to think about.

The engineers at Oracle are trying hard to improve the defaults. If you are the out-of-the-box type, and just install the new version on top of the previous one, leaving the same setup in place, you may be up for a for a few surprises. It’s the marketing, see? They tell you that just by replacing your old MySQL (5.1 or 5.5) with MySQL 5.6 you get 30% to 70% performance improvement. Which happens to be true, not only because the server is better, but also because they have changed the defaults. However, this change in defaults may come with some serious consequences for the ones who …

There are uprades for our Galera Cluster in the repository:

> yum info galera
Installed Packages
Name        : galera
Arch        : x86_64
Version     : 25.3.2
Release     : 1.rhel6
Size        : 29 M
Repo        : installed
From repo   : mariadb

Available Packages
Name        : galera
Arch        : x86_64
Version     : 25.3.5
Release     : 1.rhel6
Size        : 7.6 M
Repo        : mariadb

> yum info MariaDB-Galera-server
Installed Packages
Name        : MariaDB-Galera-server
Arch        : x86_64
Version     : 5.5.36
Release     : 1.el6
Size        : 102 M
Repo        : installed
From repo   : mariadb

Available Packages
Name        : MariaDB-Galera-server
Arch        : x86_64
Version     : 5.5.37
Release     : 1.el6
Size        : 25 M
Repo        : mariadb

Rolling Upgrade

Let’s do a Rolling Upgrade. This nice feature of Galera allows us to upgrade to the new version without taking the cluster offline.

This is …

Don't miss your opportunity to learn about Continuent Tungsten via our free "Setup & Operate" webcast series. These free webcasts include live presentations and interactive Q&A.Webcast OverviewsSetup & Operate Tungsten ReplicatorMay 15th, 10:00 am PDTTungsten Replicator is an innovative and reliable tool that can solve your most complex replication problems. We will introduce Replicator

MySQL is a great relational database, but at some point someone (management) in your company is probably going to say that they need to use NoSQL to store their data. After all, NoSQL is one of the latest buzzwords, so it must be good (correct?). Basically, NoSQL allows you to store data without all of the characteristics of a relational database. A very simple explanation is that you are storing all of a data set with just one primary key, and the primary key is how you also retrieve the data. While NoSQL may be good in some cases, it is hard to beat “old-fashioned” SQL relational databases – especially if that is what you know. But, with MySQL and InnoDB, you can have the best of both worlds.

With MySQL version 5.6 (and above), you have the ability to store and retrieve NoSQL data, …

The Perfect Server - CentOS 6.5 x86_64 (Apache2, Dovecot, ISPConfig 3)

This tutorial shows how to prepare a CentOS 6.5 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, Mailman, and many more. Since version 3.0.4, ISPConfig comes with full support for the nginx web server in addition to Apache; this tutorial covers the setup of a server that uses Apache, not nginx.

The title of this post should really be, “Maybe He Should Try Taking a Walk in Your Shoes.”

The he I’m referring to is economist and author, Tim Harford. The you is the people who use NewSQL and NoSQL approaches to mine big data with database platforms like MySQL and MongoDB (or, preferably, our high-performance distributions of them, TokuDB and TokuMX).

Why should Mr. Harford take that walk? Well, he recently penned an article on big data in …

While at Percona Live this year I was reminded about ZFS and running MySQL on top of a ZFS-based storage platform.

Now I’m a big fan of ZFS (although sadly I don’t get to use it as much as I used to after I shutdown my home server farm), and I did a lot of different testing back while at MySQL to ensure that MySQL, InnoDB and ZFS worked correctly together.

Of course today we have a completely new range of ZFS compatible environments, not least of which are FreeBSD and ZFS on Linux, I think it’s time to revisit some of my original advice on using this combination.

Unfortunately the presentations and MySQL University sessions back then have all been taken down. But that doesn’t mean the advice is any less valid.

Some of the core advice for using InnoDB on ZFS:

• Configure a single InnoDB tablespace, rather than configuring multiple tablespaces …