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Quick Start MySQL Testing Using Docker (on a Mac!)

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Quick Start MySQL Testing Using Docker (on a Mac!)

In this post, we’ll discuss how you can quick start MySQL testing using Docker, specifically in a Mac environment.

· Database Zone
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Navigating today's database scaling options can be a nightmare. Explore the compromises involved in both traditional and new architectures.

MySQL testing using DockerIn this post, we’ll discuss how you can quick start MySQL testing using Docker, specifically in a Mac environment.

Like a lot of people, I’m hearing a lot about Docker and it’s got me curious. The Docker ecosystem seems to be moving quickly, however, and simple “getting started” or “how-to” type articles that are easy to find for well-established technologies seem to be out-of-date or non-existent for Docker. I’ve been playing with Docker on Mac for a bit, but it is definitely a second-class citizen in the Docker world. However, I saw Giuseppe’s blog on the new Docker beta for Mac and decided to try it for myself. These steps work for the beta version on a Mac (and probably Windows), but they should work with Linux as well (using the GA release, currently Docker 1.11.1).

The new Docker beta for Mac requires that you register for the beta program, and receive a download code from Docker. I got mine in about a day, but I would assume it won’t be long before the full version is released.

Once installed, I needed to setup some Docker containers for common MySQL versions so that I can easily have some sandboxes. The method I used is below:

jayj@~ [510]$ docker network create test
90005b3ffa9fef1f817ee4965e794a567404c9a8d5bf07320514e7d848d59ff9
jayj@~ [511]$ docker run --name=mysql57 --net=test -e MYSQL_ALLOW_EMPTY_PASSWORD=yes -d mysql/mysql-server:5.7
6c80fa89610dbd5418ba474ad7d5451cd061f80a8a72ff2e718341827a08144b
jayj@~ [512]$ docker run -it --rm --net=test -e MYSQL_HOST=mysql57 mysql/shell init
Creating a Classic Session to root@mysql57:3306
Enter password:
No default schema selected.

enableXProtocol: Installing plugin mysqlx...
enableXProtocol: done


  1. I created a network called “test” for my containers to share, essentially this is a dedicated private network between containers.  I like this because multiple containers can listen on the same port and I don’t have to fight with ports on my host OS.
  2. I started a MySQL 5.7 image from Oracle’s official MySQL Docker container bound to that test network.
  3. I used the MySQL/shell image (also from Oracle) to initialize the mysqlx plugin on my 5.7 server. Notice I didn’t enter a password because I created the server without one (insecure, but it’s a sandbox).

The shell init uses a temporary container that is removed (–rm) after the run, so you don’t pollute your docker ps-a a output.

So, now I want to be able to use the standard MySQL command line and/or the new MySQL shell to access this container.  To  make this really clean, I added some bash aliases:

alias mysqlsh='docker run -it --rm --net=test mysql/shell'
alias mysql='docker run -it --rm -e MYSQL_ALLOW_EMPTY_PASSWORD=yes --net=test --entrypoint="mysql" mysql/mysql-server:5.7'


Using the MySQL CLI from the 5.7 image:

jayj@~ [524]$ mysql -h mysql57
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 4
Server version: 5.7.12 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql> show schemas;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.01 sec)


Planning for disaster doesn't have to actually be a disaster. Understand your options for deploying a database across multiple data centers - without the headache.

Topics:
cli ,docker ,mysql ,mac ,testing ,percona

Published at DZone with permission of Jay Janssen, DZone MVB. See the original article here.

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