I was recently discussing container technologies with my team and was trying to explain the various container-related projects including LXC, libcontainer, Docker, Kubernetes, CoreOS, and how all these fit together.

I agreed that a blog post would be a good way to further clarify some terms. I wanted to continue my more in-depth example-laden blog posts, particularly about Ansible and Docker as well as the Ansible dynamic inventory plugin for Docker, though wanted to get my thoughts out before I forget (I have young children)!

This blog post is the latest in the series:

• Introduction
• …

We’ll be publishing a series of posts on OpenStack and Trove over the next few weeks, diving into their usage and purpose. For readers who are already familiar with these technologies, there should be no doubt as to why we are incredibly excited about them, but for those who aren’t, consider this a small introduction to the basics and concepts.

What is Database as a Service (DBaaS)?
In a nutshell, DBaaS – as it is frequently referred to – is a loose moniker to the concept of providing a managed cloud-based database environment accessible by users, applications or developers. Its aim is to provide a full-fledged database environment, while minimizing the administrative turmoil and pains of managing the surrounding infrastructure.

Real life example: Imagine you are working on a new application that has to be accessible from multiple regions. Building and maintaining a large multiregion …

MySQL Fabric is a tool included on MySQL Utilities that helps you to manage your MySQL instances.
It works by basically adding a new layer between your application and MySQL instances, which can provide an easy way to use sharding and build a high available system.

For More information about what is MySQL Fabric, please follow the documentation.

To install our Fabric environment, we will have to configure 4 servers, I will use the follow names and IP on this tutorial:

fabric1 (192.168.0.200) - fabric
mysql1 (192.168.0.201) - mysql master
mysql2 (192.168.0.202) - mysql slave
mysql3 (192.168.0.203) - mysql slave

Note: I’m running CentOS 6.5 on all servers.

1. Add mysql repo on all 4 machines, please read …

In this blog post we are going to talk about one of the features included since MySQL for Excel 1.3.0, a new advanced option was added to the Export Data dialog to show all available MySQL data types on its Data Type combo-box to override its default behavior that shows only the most commonly used data types.

Remember you can install the latest GA or maintenance version using the MySQL Installer or optionally you can download directly any GA or non-GA version from the MySQL Developer Zone.

If you try to install the TokuDB storage engine on a modern Linux distribution it might fail with following error message:

2014-07-17 19:02:55 13865 [ERROR] TokuDB will not run with transparent huge pages enabled.
2014-07-17 19:02:55 13865 [ERROR] Please disable them to continue.
2014-07-17 19:02:55 13865 [ERROR] (echo never > /sys/kernel/mm/transparent_hugepage/enabled)

You might be curious why TokuDB refuses to start with Transparent HugePages. Are they not a good thing… allowing smaller kernel page tables and less TLB misses when accessing data in the buffer pool? I was curious, so I asked Tim Callaghan this very question.

This problem originates with TokuDB using jemalloc memory allocator, which uses a particular trick to deal with memory fragmentation. The classical problem with memory allocators is fragmentation – if you allocated a say 2MB chunk from the operating system (typically using …

Im giving some talks this year:

MySQL Hochverfügbar mit Galera

Location: FrOSCon

About: Learn about Galera and deploy it using LXC and Ansible

LBaaS-Loadbalancer as a Service

Place: GUUG Frühjahrsgespräche

Topic: It is a workshop ( together with Jan Walzer and Jörg Jungermann). We are going to show how to use LXC to provide slim loadbalancers.

Medley der Containertechniken

Place: GUUG Frühjahrsgespräche

Topic: Learn about all the basic techniques vanilla based Container technology uses/shares (Namespaces, Cgroups und Chroot). Have a look at some of them (LXC, Libvrit, systemd-nspawn and Docker)

MySQL Replikation: Von den Anfängen in die Zukunft

Place: DOAG 2014

Topic: Learn about the past and the future of MySQL (and MariaDB) replication.

You probably know about VividCortex’s Top Queries view, which shows MySQL query activity on one or many systems in industry-leading detail. But did you know you can also see what’s happening on the operating system? Not only do we capture fine-grained metrics about CPU, network, and so on, but we capture per-process metrics.

Behold:

This is pretty life-changing when you’re trying to figure out what’s happening in your database. How many times have you gotten tunnel vision trying to find the cause of a performance problem by looking at MySQL log files or metrics, and later discovered that the problem was due to a rogue cron job or other process?

The Top Processes view also serves as an easy way to demonstrate how lightweight the VividCortex agents are. The screenshot above was taken over a period of 12 hours on our busiest MySQL server. Obviously, MySQL is the 800-lb gorilla on this system. The second process is …

We are glad to announce the new release of dbForge Studio for MySQL, v6.2.

We are glad to announce the new release of dbForge Studio for MySQL, v6.2.

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