We extensively use MySQL error logging for proactive diagnostics, MySQL 8 has improved error logging which is capable of sending multiple format (like JSON) logs  to multiple destinations like Kibana for log processing and analysis. Let’s see how this works:

MySQL 8.0 default configuration

mysql> select * from global_variables where VARIABLE_NAME like 'log_error_%';
+---------------------+----------------------------------------+
| VARIABLE_NAME       | VARIABLE_VALUE                         |
+---------------------+----------------------------------------+
| log_error_services  | log_filter_internal; log_sink_internal |
| log_error_verbosity | 2                                      |
+---------------------+----------------------------------------+

Now that means log events will pass first through log_filter_interval (built-in filter component) and then through log_sink_interval (built-in …

We’ve posted the Percona Live 2018 keynote addresses for the seventh annual Percona Live Open Source Database Conference 2018, taking place April 23-25, 2018 at the Santa Clara Convention Center in Santa Clara, CA. 

This year’s keynotes explore topics ranging from how cloud and open source database adoption accelerates business growth, to leading-edge emerging technologies, to the importance of MySQL 8.0, to the growing popularity of PostgreSQL.

We’re excited by the great lineup of speakers, including our friends at Alibaba Cloud, Grafana, Microsoft, Oracle, Upwork and VividCortex, the innovative leaders on the Cool Technologies panel, and Brendan Gregg …

In MySQL 8.0 we have replaced the old regular expression library with the ICU regex library.  See Martin’s blog on the topic. The main goal is to get full Unicode support for regular expressions, but in addition we get a lot of neat features.…

MySQL 8.0.11 seems to be around the corner and the new MySQL Shell will take advantage of all the new improvements made in MySQL 8.0 like SET PERSIST, RESTART, … see this previous post.

In the video below, I show you how easy it’s to deploy a MySQL InnoDB Cluster using the Shell that connects remotely to all the instances:

…

In this blog post, we’ll look at options for migrating database charsets to utf8mb4.

Migrating charsets, in my opinion, is one of the most tedious tasks in a DBA’s life. There are so many things involved that can screw up our data, making it work is always hard. Sometimes what seems like a trivial task can become a nightmare very easily, and keeps us working for longer than expected.

I’ve recently worked on a case that challenged me with lots of tests due to some existing schema designs that made InnoDB suffer. I’ve decided to write this post to put together some definitive guide to enact charset conversion with minimal downtime and pain.

• First disclosure: I can’t emphasize enough that you need to always backup your data. If something goes wrong, you can always roll …

In this sixth episode of the MySQL Security series, we will see how data-at-rest encryption helps organizations implement stronger security controls and satisfy regulatory compliance. You will be able to protect the privacy of your information, prevent data breaches and help meet popular regulatory requirements including GDPR, PCI DSS, HIPAA with MySQL Enterprise Transparent Data Encryption aka TDE.

Percona’s Principal Support Engineer, Sveta Smirnova presents the webinar MySQL Test Framework for Troubleshooting on April 12, 2018, at 10:00 am PDT (UTC-7) / 1:00 pm EDT (UTC-4).

MySQL Test Framework (MTR) provides a unit test suite for MySQL. MySQL Server developers and contributors write the tests in the framework, and use them to ensure the build is working correctly.

I found that this isn’t the only thing that makes MTR useful. I regularly use it in my support job to help customers and verify bug reports.

With MySQL Test Framework I can:

• Create a complicated environment in a single step, and re-use it later
• Test the same …

Running databases on cloud infrastructure is getting increasingly popular these days. Although a cloud VM may not be as reliable as an enterprise-grade server, the main cloud providers offer a variety of tools to increase service availability. In this blog post, we’ll show you how to architect your MySQL or MariaDB database for high availability, in the cloud. We will be looking specifically at Amazon Web Services and Google Cloud Platform, but most of the tips can be used with other cloud providers too.

Both AWS and Google offer database services on their clouds, and these services can be configured for high availability. It is possible to have copies in different availability zones (or zones in GCP), in order to increase your chances to survive partial failure of services within a region. Although a hosted service is a very convenient way of running a database, note that the service is designed to behave in a specific way and that may or …

Have you ever tried to improve the performance of a query by adding a new index to a table with a large number of rows, waited for ages while the index is built, only to discover that it didn't really help as much as you'd like?

Or perhaps you have had an index that you have a hunch isn't doing much to help your query performance and decided to drop it, only to have a bunch of users complain that their queries are stalling?

If so, then you will appreciate a nice new feature in the forthcoming MySQL 8.0 release called "invisible indexes".

Invisible indexes enable you to test the effect of removing an index on query performance without making a destructive change that must be undone should the index turn out to be required. By marking an index as invisible, you are effectively "hiding" it from the optimizer while the index itself remains intact and can be restored at any time. This feature makes it much easier to test the …

In MySQL 8.0 we introduce the ICU library to handle our regular expression support. This library is maintained by the Unicode Consortium and is used on a wide variety on platforms. The reason we switch libraries is threefold: security, Unicode support and functionality.…