Test Kitchen together with Vagrant is a wonderful way to test out your infrastructure deployment and orchestration code. It makes test-driven development especially easy by allowing you to test locally using virtual machines. However, those of you who do a lot of testing with Test Kitchen and Vagrant would know that waiting for tests to complete can be painfully long. This is especially true when with every test run the same packages have to be downloaded over and over again. Or when Vagrant decides to update the Virtual Box Guest Addition plugin every time you run your test suites.

Christine Draper has an excellent …

Sometimes, MySQL tablespace file(s) might be deleted by mistake, e.g. delete the shared tablespace (ibdata1) or an individual tablespace (table_name.ibd).

In this post I will show you how to recover those files (on Linux OS) having only one condition, MySQL service should still be running. If MySQL service stopped after deleting that file, this method will not work, so it is extremely important to act as quick as possible to avoid data loss.

The following is a simple table creation (innodb_file_per_table is enabled) and the records count inside that table:

SQL> SHOW CREATE TABLE t\G
*************************** 1. row ***************************
       Table: t
Create Table: CREATE TABLE `t` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

SQL> SELECT COUNT(*) FROM t;
+----------+
| COUNT(*) |
+----------+
|       22 | …

Madrid MySQL Users Group will have its next meeting on the 20th of November. Details can be found on the group’s Meetup page. We plan to talk about pstop, which I’ve announced earlier and also the latest changes in MariaDB and MySQL since our last meeting.  The meeting will be in Spanish. I hope to see … Continue reading MMUG9: Madrid MySQL Users Group meeting to take place on 20th Noevember 2014

I have been working with MySQL for some time and it has changed significantly from what I was using in 5.0 to what we have now in 5.6. One of the biggest handicap we’ve had in the past is to not be able to see what MySQL is doing or why. MySQL 5.5 introduced us … Continue reading pstop – a top-like program for MySQL (based on performance_schema)

One of the big announcements at the Amazon Web Services re:Invent 2014 conference this week was the unveiling of Aurora. The result of years of internal work, Aurora, currently in preview, is a MySQL 5.6-compatible option that “combines the speed and availability of high-end commercial databases with the simplicity and cost-effectiveness of open source databases” on the AWS infrastructure. The Aurora database engine will be made available through the Amazon RDS for Aurora service. This new database option is another example of the vibrant innovation coming from the MySQL ecosystem and key role that relational databases play in applications of today and …

In the spirit of Movember, the database bloggers are also chipping in with their fair share of contribution, not only with a mo but also with the blog posts. This Log Buffer Edition encompasses that all.

Oracle:

Will the REAL Snap Clone functionality please stand up?

Oracle Linux images for Docker released.

In-depth look into Oracle API Catalog (OAC) 12c.

Patch Set Update: Hyperion Strategic Finance 11.1.2.3.504.

Rollback to …

Global Transaction ID (GTID) is one of the major features that were introduced in MySQL 5.6 which provides a lot of benefits (I have talked about the GTID concept, implementation and possible troubleshooting at Percona Live London 2014, you can download the slides from our presentations repository or from my session at Percona Live.
On the other hand, there are some important things you should consider before deploying GTID in production, I'm going to list them here in this blog post.

Table of Content

• …

November 14, 2014 By Severalnines

Thanks to everyone who attended and participated in this week's webinar on '9 DevOps Tips for Going in Production with Galera Cluster for MySQL'. If you missed the sessions or would like to watch the webinar again & browse through the slides, they are now available online.

In this webinar, Severalnines CTO Johan Andersson discussed 9 key aspects to consider before taking Galera Cluster for MySQL into production:

• 101 Sanity Check
• Operating System
• Backup Strategies
• Galera Recovery
• Query Performance
• Schema changes
• Security / Encryption
• Reporting
• Protecting from Disasters

Watch the replay 9 DevOps Tips for Going in …

This blog post was inspired by my visit at the annual Zabbix Conference in Riga, Latvia this year, where I gave a couple of talks on MySQL and beyond.

It was a two day single-track event with some 200 participants, a number of interesting talks on Zabbix (and related technologies) and really well-organized evening activities. I was amazed how well organized the event was and hope to be invited to speak there next year as well.   (Just in case you’re not sure what Zabbix is, it is an enterprise-class open source distributed monitoring solution for networks and applications)

I must secretly confess, it was also the first conference …

Fri, 2014-11-14 08:30anatoliydimitrov

You can use the popular programming language Python to manage data stored in MariaDB. Here is everything you need to know about connecting to MariaDB from Python for retrieving, updating, and inserting information.

Preparation and installation

If you don't already have MariaDB installed on your system, check the official MariaDB installation instructions or read the blog post on How to install MariaDB on CentOS 7.

If you want to try out Python integration with MariaDB but you don't have a database to play with, you can use the popular employees example database.

MariaDB provides …