This is a rant. It’s a strong one mainly because of what I’ve been dealing with over the past few days. But it’s still just a rant, so I’m going to exaggerate 😛. I’ve been with my employer for several years, and a lot of the stuff I’m writing about isn’t really new. I think most of it has been like this for years. I didn’t really pay attention to this stuff in the past because I didn’t have to. I didn’t want to either1, but now our team is handling ops and I have to care 😐.

Doing it wrong with MySQL

We use async, bidirectional replication. It’s a nightmare.

Using async replication means you don’t care about replicas, basically by definition. If the master isn’t waiting for replicas, then they can fall arbitrarily behind, crash, fail, whatever and the master will happily keep going. You can use hacks like delaying binlog commits on the master to improve parallelization on the …

Thank you everyone who attended our Webinar on “Monyog v7.04 demonstration & Roadmap Update”.

During the webinar, Shree gave a complete walkthrough of the all new Monyog v7.04. He also shared the product roadmap along with the performance improvements for bigger deployments.

Here’s the complete video for all those who couldn’t attend the webinar.

We hope you found the webinar useful. We will be conducting more webinars in upcoming weeks. To keep yourself updated, subscribe to our blogs.

Download a free trial of Monyog here.

The post Highlights: Monyog v7.04 demonstration & Roadmap Update appeared first on Webyog Blog.

This post is a lab experiment learning from migration to the Percona Xtradb Cluster (Galera) and a very unexpected DEADLOCK scenario which took me back to basics. (root@localhost) [test]>insert into…

The post MySQL to Galera Cluster Migration, Deadlock, Back to basics first appeared on Change Is Inevitable.

In this blog post, I’ll look for the bottleneck that prevented the performance in my previous post from achieving better results.

The powerful machine I used in the tests in my previous post has a comparatively slow disk, and therefore I expected my tests would hit a point when I couldn’t increase performance further due to the disk speed.

Hardware configuration:

Processors: physical = 4, cores = 72, virtual = 144, hyperthreading = yes
Memory: 3.0T
Disk speed: about 3K …

This maintenance release introduces a long requested feature – HEX-dumping of binary data – and adds a number of non-critical bug fixes.

Changes as compared to MySQL GUI 12.4 include:

Features:

* Added an option to HEX-dump binary data in Export as SQL and in Scheduled Backup.
* In read-only mode FLUSH-statements can now be executed from the GUI as well as editor, except for ‘FLUSH TABLE WITH READ LOCK’ (as we don’t allow acquiring explicit LOCKS in read-only mode).

Bug Fixes:

* On enabling HTTP, SSL or SSH checkbox in the connection manager, the checkbox wasn’t redrawn automatically. The checkbox were re-drawn only on hovering over them or switching to another tab in the connection window
* In Table Diagnostics, clicking on Analyse executed same query …

We’ll show you, how to secure LEMP stack. LEMP, it stands for Linux, (EngineX) NGINX, MariaDB (or MySQL) and PHP. Due to its flexibility and simplicity, NGINX slowly takes over the Internet. In this tutorial, we will attempt, through examples of bad and good practices, to go through the steps of properly securing your Linux web server. […]

We are glad to announce that dbForge Studio for MySQL is the Devart product of the month. On using this promo code, you can purchase the tool with 15% OFF within March 2017*!

Dear MySQL Users,

MySQL Connector/J 5.1.41, a maintenance release of the production 5.1
branch has been released. Connector/J is the Type-IV pure-Java JDBC
driver for MySQL.

Version 5.1.41 is suitable for use with many MySQL server versions,
including 4.1, 5.0, 5.1, 5.4 and 5.5.

MySQL Connector Java is available in source and binary form from the
Connector/J download pages at
http://dev.mysql.com/downloads/connector/j/5.1.html
and mirror sites as well as Maven-2 repositories.

MySQL Connector Java (Commercial) is already available for download on the
My Oracle Support (MOS) website. This release will be available on eDelivery
(OSDC) in next month’s upload cycle.

As always, we recommend that you check the “CHANGES” file in the
download archive to be aware of changes in behavior that might affect
your application.

…

Summary: If you are using innodb_flush_method = O_DIRECT (which is highly recommended for a bunch of reasons) and innodb_track_changed_pages the instance will crash if you query any tables related to that feature. So innodb_track_changed_pages is a Percona system variable which … Continue reading →

This blog post examines the recent MySQL® ransomware attacks, and what open source database security best practices could have prevented them.

Unless you’ve been living under a rock, you know that there has been an uptick in ransomware for MongoDB and Elasticsearch deployments. Recently, we’re seeing the same for MySQL.

Let’s look and see if this is MySQL’s fault.

Other Ransomware Targets

Let’s briefly touch on how Elasticsearch and MongoDB became easy targets…

Elasticsearch

…