This blog post describes how to keep sensitive data secure on slave servers in a MySQL async replication setup.

Almost every web application has a sensitive data: passwords, SNN, credit cards, emails, etc. Splitting the database to secure and “public” parts allows for restricting user and application parts access to sensitive data.

Field encryption

This is based on MySQL encryption functions or on client-side encryption when the authorized user knows a secret, but encrypted data is distributed to all slaves.

• If possible, use hashes with a big enough salt, and do not store real sensitive …

Last week, Ubuntu released their newest long term support version, Ubuntu 18.04. As of today, we offer 18.04 packages for recent versions of almost all MySQL products, both for manual download and through our APT repos. Congratulations to the Ubuntu community on another solid release, and a special shout-out to our friends over at Canonical: we […]

Dear MySQL Users,

A new GA (general availability) version of MySQL Connector/C++ has been made available: MySQL Connector/C++ 1.1.11 GA. The MySQL Connector/C++ provides a C++ API for connecting client applications to the MySQL Server 5.5 or newer.

You can download the production release at:

http://dev.mysql.com/downloads/connector/cpp/1.1.html

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

The MySQL driver for C++ offers an easy to use API derived from JDBC 4.0. MySQL Workbench has used it successfully for years.

We have improved the driver since the last GA release. Please see the documentation and the CHANGES file in the source distribution for a detailed description of …

Dear MySQL users,

MySQL Connector/NET 6.10.7 is the fourth GA release with .NET Core
now supporting various connection-string options and MySQL 8.0 server
features.

To download MySQL Connector/NET 6.10.7 GA, see the “Generally Available
(GA) Releases” tab at http://dev.mysql.com/downloads/connector/net/

Changes in MySQL Connector/NET 6.10.7 (2018-04-30, General Availability)

Functionality Added or Changed

* Connections made to MySQL 8.0 (up to and including
version 8.0.3) and compatibility with the new data dictionary are
now supported. For information about the data dictionary, see
MySQL Data Dictionary
(http://dev.mysql.com/doc/refman/8.0/en/data-dictionary.html).

* Support for the caching_sha2_password …

MySQL 8.0 brings a lot of new spatial features. The main feature is the support for multiple spatial reference systems (SRSs).

Spatial reference systems is not a new concept in MySQL, but 8.0 is the first version where it affects computations, and it’s the first version where users actually have to think about it.…

We have been told many times that modifying live database should be done with extreme care, we should always make a backup before doing something big to the database. However, there are countless stories on the Internet about losing data due to various reason, one of them is forgetting to create a backup (Gitlab is an example: https://about.gitlab.com/2017/02/01/gitlab-dot-com-database-incident/). I was facing the same issue when upgrading MySQL server to a new version. Luckily I was able to restore most of the data but it was still a very good lesson for me. One of lesson I learned is how we could restore the data from the *.ibd and *.frm file.

The database I worked with had many tables. There were about 5 of them using MyISAM engine while others were using InnoDB engine. I was asked to upgrade …

MySQL 8.0 has been released as stable (GA) earlier this month. For db4free.net this means it’s time to make MySQL 8.0 the default version and to deprecate the MySQL 5.7 server instance.

The new MySQL 8.0 server is running on the default port 3306. All new registrations will have the database created on this server. It is fresh and empty and will start from scratch.

The previous MySQL 5.7 server will remain available on port 3308. All users who have data there which they want to keep should migrate it to the new MySQL 8.0 server. This will require you to sign up again.

The previous MySQL 8.0 server will remain on port 3307. Both the old MySQL 5.7 and the old MySQL 8.0 server on port 3307 will be available until June 15, 2018. Data which isn’t migrated to the new server instance by then will be lost.

The new MySQL 8.0 server instance will come …

What does Anton Ego – a fictional restaurant critic from the Pixar movie Ratatouille – have to do with MySQL 8.0 GA?

When it comes to being a software critic, a lot.

In many ways, the work of a software critic is easy. We risk very little and thrive on negative criticism, which is fun to read and write.

But what about those who give their many hours of code development, and those who have tested such code before release? How about the many people behind the scenes who brought together packaging, documentation, multiple hours of design, marketing, online resources and more?

And all of that, I might add, is open source! Free for the world to take, copy, adapt and even incorporate in full or in part into their own open development.

It is in exactly that area that the …

MySQL 8.0 became Generally Available (GA) on April 19th, a great moment for us working on MySQL at Oracle. It is now a “fully grown adult” packed with new features, and improvements to existing features, as described here.

This blog post focuses on the impact of replication performance improvements that went into MySQL 8.0.…

All our customers are on Linux, They have multiple flavors of Linux actually – Ubuntu, CentOS, RedHat Linux, Oracle Linux, SUSE Linux etc. Though we are an full-service everything MySQL shop, Our consulting, support and managed services are never restricted to only MySQL Ops. , We are experts in Linux,  DevOps and Site Reliability Engineering (SRE). We have proven methods to deliver Linux performance audit / health check / diagnostics and recommendations. What are the tools we use for monitoring Linux ops. ? This post is about those tools we use regularly in MinervaDB for monitoring Linux operations:

How long Linux server is up and running ? 

[root@localhost ~]# uptime 
 12:32:56 up 1800 min,  83 users,  load average: 88.01, 88.52, 88.64
[root@localhost ~]#

Print all the processes running as root

[root@localhost ~]# ps -U root -u root 
  PID TTY          TIME CMD
    1 ? …