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Displaying posts with tag: usability (reset)
The fastest MySQL Sandbox setup ever!

MySQL-Sandbox 3.1.11 introduces a new utility, different from anything I have put before in the MySQL Sandbox toolkit.

make_sandbox_from_url downloads a tiny MySQL tarball from a repository and install it straight away.

As of today, the following packages are available

Major release versions package size
(what you download)
expanded size
(storage used)
original size
(not included)
5.0 5.0.96 20M 44M 371M
5.1
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MySQL 5.7 ghost users

Several months ago I reported on Default Users in MySQL 5.7. With the addition of the sys schema the server needs an extra user to secure operations. The problem with extra users is that, if you are not aware of their existence and why they are needed, you may easily mismanage them. For example, you may have a cleanup routine that you run when you use a new server, and the routine may have a command like

DELETE FROM mysql.user WHERE user != 'root';

This was good up to MySQL 5.6. Then the sys schema was added, and with it the user mysql.sys, which may cause errors if you try to re-create views in the sys schema.

The latest user sneaking below the radar is mysqlxsys. Like its predecessor, …

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Frictionless MySQL installation

I saw an interesting post about the ability of installing MySQL 5.7 without changing existing tools and procedures. The post is a plea to make MySQL installation frictionless.

That post was followed by a conversation on Twitter, where the recent security enhancements are blamed for getting in the way of existing practices and need a rewrite of installation tools.

I know the problem very well, as I have faced the installation change in MySQL Sandbox. SO I can sympathize with the ones who have to change deployment tools that rely on mysql_install_db, which was a Perl script up to version 5.6, then it was replaced with a C++ program in 5.7 and deprecated in the same version.

It occurred to me that, in order to keep the …

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MySQL and Docker on a Mac: networking oddity

This is a quick post only indirectly related to the series of articles about Docker that I have written recently.

Yesterday I was giving a presentation about Docker in Buenos Aires, and as usual I included a long live demo. Almost all went as expected. There was one step that I tried some time ago, and had always worked well, but when I tried to repeat it on stage, it failed miserably:

  • Step 1: run the container
$ docker run  -d --name mybox -e MYSQL_ROOT_PASSWORD=secret mysql/mysql-server …
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Default users in MySQL 5.7

Among the many New features introduced by MySQL 5.7, we can notice a strong trend towards improving the server security by default. Two features stand out in this respect:

  • A password-less root is no longer the default for new installations. Unless you say otherwise, the default installers mysqld --initialize and the deprecated mysql_install_db will generate a random password which the user needs to change.
  • The anonymous accounts are no longer created by default. When you start MySQL, you only get the root user (and a new one: read on).

The above features are a great advance not only for security but also for usability. The anonymous users were a continuous source of mismatched connections, …

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MySQL-Docker operations. - Part 3: MySQL replication in Docker


Previous Episodes:

MySQL-Docker operations. - Part 1: Getting started with MySQL in DockerMySQL-Docker operations. - Part 2: Customizing MySQL in Docker
With the material covered in the first two articles, we have all the elements needed to set up replication in Docker. We just need to put the pieces together.
If you want to do everything by hand, it will only take a few minutes. The steps are not complicated. If you have followed the reasoning in the past episodes, you will know what to do.
Or, you can make your life easier by using the ready-made scripts available in Github as MySQL …

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MySQL replication in action - Part 5 - parallel appliers

Previous episodes:

MySQL replication in action - Part 1: GTID & CoMySQL replication in action - Part 2 - Fan-in topologyMySQL replication in action - Part 3 - All-masters P2P topologyMySQL replication in action - Part 4 - star and hybrid topologies
Parallel replication overviewOne …

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New MySQL Sandbox 3.1 - GitHub, and usability

I have three pieces of information to share about MySQL::Sandbox:

  • Version 3.1.0 has migrated from Launchpad to GitHub
  • This version is released under the Apache license. Both these changes are meant to improve and promote cooperation on the project.
  • There is an important change related to usability. When using replication with MySQL::Sandbox and MySQL 5.6+, the server UUIDs become more readable (see below).

First, some words on the location changes. About two years ago, I started plans for a rewrite of MySQL::Sandbox. Then, I had some unexpected changes, which involved moving home to a different continent twice within twelve months. The project …

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MySQL usability issues for replication

In my latest series of advanced replication features, I came across several usability issues, which I would like to recap here. For each section of this list of requests, I make a wish list, with some general comments.
INSTALLATIONAs the maintainer of MySQL Sandbox, a tool that wants to facilitate the installation of …

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MySQL replication in action - Part 3: all-masters P2P topology

Previous episodes:

MySQL replication in action - Part 1: GTID & CoMySQL replication in action - Part 2 - Fan-in topology


In the previous article, we saw the basics of establishing replication from multiple origins to the same destination. By extending that concept, we can deploy more complex topologies, such as the point-to-point (P2P) all-masters topology, a robust and …

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Showing entries 11 to 20 of 54
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