Overview

Continuent has traditionally had a relaxed policy about Linux platform support for customers using our products.

While it is possible to install and run Continuent Tungsten products (i.e. Cluster/Replicator/etc.) inside Docker containers, there are many reasons why this is not a good idea.

Background

As background, every database node in a Tungsten Cluster runs at least three (3) layers or services:

• MySQL Server (i.e. MySQL Community or Enterprise, MariaDB or Percona Server)
• Tungsten Manager, which handles health-checking, signaling and failover decisions (Java-based)
• Tungsten Replicator, which handles the movement of events from the MySQL master server binary logs to the slave databases nodes (Java-based)

Optionally, a …

An easy way to setup one or multiple MySQL server deployments on a single server is to use Docker – a computer program that performs operating-system-level virtualization. Docker is simple-to-use and allows you to run multiple containers at once.

A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings. (Source: https://www.docker.com/resources/what-container)

In other words, think of a container as a virtual machine without the graphical user interface (GUI). There are third-party GUI’s available, but for this post, I am going to use a …

In MySQL 8.0.16 the optimizer has improved again! Comparisons of columns of numeric types with constant values are checked and folded or removed for invalid or out-of-rage values. The goal is to speed up query execution.

Kubernetes Operators are amazing and they are already playing an important role for those who are managing large scale applications. I personally think that we will manage all applications using Operators.

In this tutorial I will show you how to setup a MySQL cluster using the MySQL Operator on Kubernetes.

Prerequisites:

1. Install kubectl
2. Install Helm
3. Kubernetes Cluster: Use minikube locally or check out Luca’s post on how to set up OKE.

Let’s start with cloning the MySQL repository which contains the …

More than 3 weeks passed since my previous review of public MySQL bug reports I am subscribed to, so it's time to present some of the bugs I've considered interesting in January, 2019.

As usual, I'll review them starting from the oldest and try to summarize my feelings about these bugs at the end of this post. Here they are:

• Bug #93806 - "Document error about ON DUPLICATE KEY UPDATE". Years pass, but fine MySQL manual still does not explain some cases of InnoDB locking properly. Xiaobin Lin found yet another case that it does not explain properly. Or, maybe, the manual is correct and the problem in …

Oracle’s website shows End of life for MySQL 5.5 as of Jan 20th of 2019, so hurry up and upgrade!

I am working building some demos for Cloud SQL and one of the requirements I had was to run MySQL 5.7 and WordPress as my sample application. The demo consisted on migrating from a single VM environment with WordPress and MySQL running alongside. The narrative: the site got popular and the database became the bottle neck because of all the shared resources between them and the application. The proposed solution? A minimal downtime migration to Cloud SQL, moving the data layer to a dedicated server.

I am going to be doing this demo a lot of times, so I needed some way to automate it. I thought of doing through Docker. I am not Docker proficient, and to begin with I asked …

Since the new 8.0.13 release we publish docker images for a new architecture: aarch64, as part of our normal release process. This means that the mysql/mysql-server docker image will work on both amd64 and aarch64 architectures. The newest images are as usually available on dockerhub. On amd64 machines: [user@amd64host]$ docker pull mysql/mysql-server:8.0.13 [user@aarch64host]$ docker run […]

Uber is committed to delivering safer and more reliable transportation across our global markets. To accomplish this, Uber relies heavily on making data-driven decisions at every level, from forecasting rider demand during high traffic events to identifying and addressing bottlenecks…

The post Uber’s Big Data Platform: 100+ Petabytes with Minute Latency appeared first on Uber Engineering Blog.

Traditionally infrastructure management is a manual task, with sysadmins managing rather static servers. The automation capabilities of modern cloud platforms have changed this way of working: Infrastructure is often described “as code,” e.g. in a git repository, and changes are made by infrastructure management systems automatically. As a result infrastructure is much less static and turnaround […]

When deployed through Docker Percona Monitoring and Management (PMM) uses environment variables for its configuration

For example, if you want to adjust metrics resolution you can pass

-e METRICS_RESOLUTION=Ns

  as  an option to the

docker run

  command:

docker run -d \
  -p 80:80 \
  --volumes-from pmm-data \
  --name pmm-server \
  --restart always \
  -e METRICS_RESOLUTION=2s \
  percona/pmm-server:latest

You would think if you want to change the setting for existing installation you can just stop the container with

docker stop

…