Requires ClusterControl 1.2.11 or later. Applies to MySQL based clusters.

In this example we will look at how you can use ClusterControl to create a user and assign privileges to the user. We will create a user that has enough privileges to perform an xtrabackup.

In the ClusterControl UI press Manage > Schemas and Users, and then press Create Account. You will see the following screen, and here we have filled out the details to create a user with enough privileges to run xtrabackup:

Server refers to the server from which the user is allowed to connect. In Create On DB Node you can select a particular server to …

Hi all, keeping our steady release cycle, it is time again to do another preview release of MySQL Group Replication, the plugin that brings multi-master update everywhere to MySQL, like we described in Hello World post.

We are very proud to do the fifth preview release of MySQL Group Replication, version 0.6.0 based on MySQL Server 5.7.9, which introduces new exciting features, please enjoy the highlights!…

Mon, 2015-10-26 09:49Roger Levy

The year has flown by so quickly and I am simply stunned that Fall is now upon us. With the changing of seasons it is time for another software release of MariaDB Enterprise (MDBE) as well as MaxScale.

We’ve heard many things from our customers and we continue to focus on the most important and mission critical. With our Fall releases, we enhance and provide fixes on our security, scalability and performance features.

Over the last year we have delivered several new capabilities in our enterprise offer such as optimized binaries and support for the Power8 platform. We have also introduced the MariaDB MaxScale intelligent gateway to help you secure, scale and maintain your database infrastructure. What does all of this mean, exactly?

We have been working all year to address the needs of our customers and community. We are always focused on working with our customers and community …

Docker is one of the fastest growing trends in IT. It allows fast deployment of services and applications on a Linux machine (and, with some limits, on other operating systems). Compared to other methods of deploying databases, such as virtual machines or application isolation, it offers faster operations and better performance.
Many people, surprised by the sudden advance of this technology, keep asking What is Docker? And why you should use it?
I will write soon an article with a deep comparison of the three methods (VM, container, sandbox), but for now, we should be satisfied with a few basic facts:

• Docker is a Linux container. It deploys every application as a series of binary …

I was wondering if it is possible to write a MySQL User Defined Function (UDF) in Go.  
So I tried and I got a very basic UDF working.

mysql> SELECT udf_fileexists_go("/etc/hosts");
+---------------------------------+
| udf_fileexists_go("/etc/hosts") |
+---------------------------------+
|                               1 |
+---------------------------------+
1 row in set (0.00 sec)

mysql> SELECT udf_fileexists_go("/nonexistend");
+-----------------------------------+
| udf_fileexists_go("/nonexistend") |
+-----------------------------------+
|                                 0 |
+-----------------------------------+
1 row in set (0.00 sec)

This is nowhere near production quality, so be careful.

The code is here:https://github.com/dveeden/udf_fileexists_go/blob/master/udf_fileexists_go.go. …

The Korean MySQL Power User Group gets a special guest speaker next weekend (Oct 31 2015 – 4pm – 4:33’s offices in Gangnam — nearest train stop is Samseong station, Line 2 — post requires Cafe Naver login) — Mark Callaghan (Small Datum, @markcallaghan, and formerly High Availability MySQL). I’ve been to many of their meetups, and I think this is a great opportunity for many DBAs to learn more about how Mark helps make MySQL and MongoDB better …

Last week we had the MySQL Meetup with MariaDB Developers in Amsterdam, which went on easily for about 3.5 hours. Thanks to all for listening (these were lightning talks, not with a strict 5 minute clock with Q&A thrown in), and Daniël van Eeden for organising this at the eBay offices (whom kindly provided pizza, beer and soft drinks as well). We had many talks, and I’ve managed to put up most of the slides into a Google Drive folder, so feel free to access the …

[…] the VPC and I would like to connect to it using MySQL workbench. I have followed the steps detailed here, however in “Step 6: Setting up remote SSH Configuration”, it asks me to “Provide […]

This Log Buffer Edition covers some more Oracle, SQL Server and MySQL blog posts from across the world.

Oracle:

• Should I monitor the MGMTDB database?
• Connecting MAF Applications to Mobile Cloud Service
• JRE 6, 7, and 8 now certified with EBS 11i, 12.1, and 12.2
• The database writer copies data blocks from the buffer cache onto disk. The db_writer_processes initialization parameter determines how many processes will do this task. Its default value is 1 or cpu_count / 8, whichever is greater. I found an Oracle 9 database on a …

Personal Projects with the Internet of Things

So you want to do a personal project with the Internet of Things (maybe a home automation or metrics collection or something else)? In this blog post I will tell about my recent experience with this. I will give a talk on this topic at Oracle OpenWord 2015 (Tuesday, Oct 27, 6:15 p.m., Moscone South, 274).

Here is what I did: I was looking for the best place to plant some trees in my backyard. I learned that I need to know how much sun I have in the backyard before planting (some trees need full sun, while others need partial sun or shade). So I needed to measure the sunlight in different spots.

The “old” way of doing it was to use …