Author: Peter Sylvester

Is slave_exec_mode idempotent actually idempotent?

Co-Author: Rafael Alvarez When you look up the word idempotence in wikipedia you get the following definition: Idempotence is the property of certain operations in mathematics and computer science whereby they can be applied multiple times without changing the result beyond the…

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MySQL Swapping With Fsync

One problem that’s a lot less common these days is swapping. Most of the issues that cause swapping with MySQL have been nailed down to several different key configuration points, either in the OS or MySQL, or issues like the…

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Interesting happenstance when installing Ansible dependencies in a MySQL Docker container

I’ve been posting quite a bit about Docker as I’ve been working with it a lot as of late. I thought I would share something interesting I discovered a couple weeks ago while working on setting up a Docker container-based…

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Backing up your MySQL instance physically with Docker

In a previous post I had mentioned that I was doing a bit of digging into Docker in order to get a better grasp of the technology. Part of that was exploring common administrative tasks. I would venture to say…

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Configuring MySQL in a Docker Container

In recent weeks I’ve been focusing on Docker in order to get a much better understanding of the containerized world that is materializing in front of us. Containers aren’t just for stateless applications anymore and we’re seeing more cases where…

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Increasing functional testing velocity with pt-query-digest

Whenever we do upgrades for our clients from one major version of MySQL to another we strongly recommend to test in two forms. First, it would be a performance test between the old version and the new version to make…

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How to Enable Binary Logging on an Amazon RDS Read Replica

One of the more common struggles I’ve had to assist with in regard to Amazon RDS is enabling binary logging on read replicas, or forming multi-tier replication in instances using version 5.6 or later after seeing that multi-tier replication is…

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Backup and data streaming with xbstream, tar, socat, and netcat

On April 4th 2012 Xtrabackup 2.0 was released in to GA by Percona along with a new streaming feature called xbstream. This new tool allowed for compression and parallelism of streaming backups when running xtrabackup or innobackupex without having to…

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The State of MySQL High Availability Going in to 2018

High availability for MySQL has become increasingly relevant given the ever increasing rate of adoption and implementation. It’s no secret to anyone in the community that the popularity of MySQL has become noteworthy. I still remember my start with MySQL…

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MySQL Crashes on DDL statement: A Lesson on purge threads

Recently there have been several issues reported to me about DDL activity causing MySQL crash scenarios. In one case it stemmed from dropping multiple databases, one after the other in rapid succession. But in the case that I was recently…

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