MySQL

Category to track posts in PlanetMySQL

Why Optimization derived_merge can Break Your Queries

MySQL optimizer bugs

Lately, I worked on several queries which started returning wrong results after upgrading MySQL Server to version 5.7 The reason for the failure was derived merge optimization which is one of the default
optimizer_switch  options. Issues were solved, though at the price of performance, when we turned it
OFF . But, more importantly, we could […]

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Backing up Percona Server for MySQL with keyring_vault plugin enabled

Percona XtraBackup with keyring_vault

To use Percona XtraBackup with keyring_vault plugin enabled you need to take some special measures to secure a working backup. This post addresses how to backup Percona Server for MySQL with keyring_vault plugin enabled. We also run through the steps needed to restore the backup from the master to a slave.
This is the second […]

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This Week in Data with Colin Charles 53: It’s MariaDB Week PLUS Percona Live Europe Update

Colin Charles

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
This week is clearly what I’d call a “MariaDB week” — plenty of announcements coming from MariaDB Corporation and MariaDB Foundation.
It started with Alibaba Cloud and MariaDB Announce the Launch of ApsaraDB RDS for MariaDB TX, […]

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Prometheus 2 Times Series Storage Performance Analyses

cpu saturation and max core usage

Prometheus 2 time series database (TSDB) is an amazing piece of engineering, offering a dramatic improvement compared to “v2” storage in Prometheus 1 in terms of ingest performance, query performance and resource use efficiency. As we’ve been adopting Prometheus 2 in Percona Monitoring and Management (PMM), I had a chance to look into the […]

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ProxySQL 1.4.10 and Updated proxysql-admin Tool Now in the Percona Repository

ProxySQL 1.4.11

ProxySQL 1.4.10, released by ProxySQL, is now available for download in the Percona Repository along with an updated version of Percona’s proxysql-admin tool.
ProxySQL is a high-performance proxy, currently for MySQL and its forks (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created […]

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Tutorial Schedule for Percona Live Europe 2018 Is Live

Percona Live Europe tutorials and sneak peak

Percona has revealed the line-up of in-depth tutorials for the Percona Live Europe 2018 Open Source Database Conference, taking place November 5–7, 2018 at the Radisson Blu Hotel in Frankfurt, Germany. Secure your spot now with Advanced Registration prices. Be sure to buy your tickets soon as tickets prices will only head up, not down! Sponsorship opportunities for the […]

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Percona XtraDB Cluster 5.6.41-28.28 Is Now Available

Percona XtraDB Cluster 5.7

Percona announces the release of Percona XtraDB Cluster 5.6.41-28.28 (PXC) on September 18, 2018. Binaries are available from the downloads section or our software repositories.
Percona XtraDB Cluster 5.6.41-28.28 is now the current release, based on the following:

Percona Server for MySQL 5.6.41
Codership WSREP API Rrelease 5.6.41
Codership Galera library 3.24

Fixed Bugs

PXC-1017: Memcached API is now disabled […]

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Monitoring Processes with Percona Monitoring and Management

Memory utilization during compaction process

A few months ago I wrote a blog post on How to Capture Per Process Metrics in PMM. Since that time, Nick Cabatoff has made a lot of improvements to Process Exporter and I’ve improved the Grafana Dashboard to match.
I will not go through installation instructions, they are well covered in original blog post.  This […]

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Using the keyring_vault Plugin with Percona Server for MySQL 5.7

keyring_vault store database encryption keys

This is the first of a two-part series on using the keyring_vault plugin with Percona Server for MySQL 5.7. The second part, Backing up Percona Server for MySQL with keyring_vault plugin enabled, walks through how to use Percona Xtrabackup to backup from this instance and restore to another server and set it up as a slave […]

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This Week in Data With Colin Charles 52: London MySQL Meetup

Colin Charles

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
This week wraps up the London MySQL meetup, where there were four presentations, for the intimate yet diverse crowd. We saw representation from Oracle MySQL, MariaDB Corporation, Pythian, and Percona. Long-time organizer Ivan Zoratti has […]

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