by Jay Janssen | Dec 22, 2014 | MySQL, Percona Software
Background on Backup Locks I was very excited to see Backup locks support in release notes for the latest Percona XtraDB Cluster 5.6.21 release. For those who are not aware, backup locks offer an alternative to FLUSH TABLES WITH READ LOCK (FTWRL) in
by Karthik Appigatla | Dec 19, 2014 | MySQL
Please note, a more up-to-date follow-up post is here: Storing UUID and Generated Columns A few years ago Peter Zaitsev, in a post titled “”There is timestamp based part in UUID which has similar properties to auto_increment and which could be used to have...
by Stephane Combaudon | Dec 18, 2014 | Insight for DBAs, MySQL, Percona Software
HAProxy is frequently used as a software load balancer in the MySQL world. Peter Boros, in a past post, explained how to set it up with Percona XtraDB Cluster (PXC) so that it only sends queries to available nodes. The same approach can be used in a regular...
by Rich.Prohaska | Dec 17, 2014 | MySQL
TokuDB offers high throughput for write intensive applications, and the throughput scales with the number of concurrent clients. However, when the binary log is turned on, TokuDB 7.5.2 throughput suffers. The throughput scaling problem is caused by a poor...
by Peter Zaitsev | Dec 17, 2014 | Insight for DBAs, MySQL
I believe InnoDB storage engine architecture is great for a lot of online workloads, however, there are no silver bullets in technology and all design choices have their trade offs. In this blog post I’m going to talk about one important InnoDB limitation that...
by Tom Diederich | Dec 16, 2014 | Insight for DBAs, MySQL, Percona Live
I attended the OpenStack Paris summit last month (Percona had a booth there). It was my first opportunity to meet face-to-face with this thriving community of developers and users. I’m proud that Percona is part of this open source family and look forward to...
by Tom Diederich | Dec 15, 2014 | MySQL, Percona Live
The many hours of intensive tutorials, led by some of the top minds in MySQL, have always been a major draw each year to the Percona Live MySQL Conference and Expo. And 2015’s event will be no exception. Percona Live 2015 runs April 13-16 in Santa Clara, Calif....
by Daniel Guzmán Burgos | Dec 10, 2014 | Insight for DBAs, MySQL
Disclaimer: Reset the MySQL root password at your own risk! It doesn’t apply if you’re using Pluggable authentication and certainly won’t be usable if/when MySQL system tables are stored on InnoDB What is the situation? The situation is the classic...
by Kortney Runyan | Dec 9, 2014 | MySQL, Percona Live
On behalf of the OpenStack Live Conference Committee, I am excited to announce the sneak peek schedule for the inaugural OpenStack Live 2015 Conference! This new annual conference, running in parallel with the already established Percona Live MySQL Conference and...
by Muhammad Irfan | Dec 9, 2014 | Insight for DBAs, MySQL
In MySQL 5.6 Oracle introduced a Transportable Tablespace feature (copying tablespaces to another server) and Percona Server adopted it for partial backups which means you can now take individual database or table backups and your destination server can be a vanilla...
by Jay Janssen | Dec 5, 2014 | Benchmarks, MySQL, Percona Software
Introducing Consul I’m always interested in what Mitchell Hashimoto and Hashicorp are up to, I typically find their projects valuable. If you’ve heard of Vagrant, you know their work. I recently became interested in a newer project they have called...
by Peter Boros | Dec 4, 2014 | Insight for DBAs, MySQL, Webinars
Fact: MySQL is the most commonly used database in OpenStack deployments. Of course that includes a number of MySQL variants – standard MySQL by Oracle, MariaDB, Percona Server, MySQL Galera, Percona XtraDB Cluster, etc. However, there are many misconceptions and...
by Tom Diederich | Dec 4, 2014 | MySQL, Percona Events, Percona Live
You know you’ll be there so why not save some $$ by registering now for the Percona Live MySQL Conference & Expo 2015 (April 13-16 in Santa Clara, Calif.). Super Saver registration discounts are available through Dec. 14 at 11:30 p.m. PST. (That’s just 10...
by Jay Janssen | Dec 3, 2014 | MySQL, Percona Software
One new feature in Percona XtraDB Cluster (PXC) in recent releases was the inclusion of the ability for an existing cluster to auto-bootstrap after an all-node-down event. Suppose you lose power on all nodes simultaneously or something else similar happens to your...
by Andrew Moore | Dec 2, 2014 | Insight for DBAs, MySQL, Percona Services
This post is a follow-up to my November 19 webinar, “Tips from the Trenches: A Guide to Preventing Downtime for the Over-Extended DBA,” during which I described some of the most common reasons DBAs experience avoidable downtime. The session was aimed at...
by Stephane Combaudon | Dec 1, 2014 | Insight for DBAs, MySQL, Percona Software
By default in MySQL 5.6, each time MySQL is started (regular start or crash recovery), it iterates through all the binlog files when GTIDs are not enabled. This can take a very long time if you have a large number of binary log files. MySQL and Percona Server 5.6.21+...
by Stephane Combaudon | Nov 24, 2014 | Insight for DBAs, MySQL
People using OpenStack Trove instances can hit a common issue in the MySQL world: how to perform schema change operations while minimizing the impact on the database server? Let’s explore the options that can allow online schema changes. Summary With MySQL 5.5,...
by Jay Janssen | Nov 21, 2014 | Cloud, MySQL, Percona Software
I’m happy to announce that Google has added Click-to-deploy functionality for Percona XtraDB Cluster (PXC) on Google Cloud Compute nodes. This gives you the ability to rapidly spin up a cluster for experimentation, performance testing, or even production use on...
by Arunjith Aravindan | Nov 19, 2014 | Insight for DBAs, MySQL, Percona Software
You might have encountered situations where you had to kill some specific select queries that were running for long periods and choking the database. This post will go into more detail with an example of report query offloading. Report query (select) offloading to a...
by Stephane Combaudon | Nov 17, 2014 | Insight for DBAs, MySQL
Even if a Galera node looks like a regular MySQL server, the underlying replication mechanism is very different. This implies some changes in the way you have to configure the Galera nodes. Here are some of the most common misconceptions about Galera when using this...
