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Displaying posts with tag: best practices (reset)

Default users in MySQL 5.7
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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 …
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MySQL-Docker operations. - Part 3: MySQL replication in Docker
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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. …



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MySQL-Docker operations. - Part 2: Customizing MySQL in Docker
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Previous Episodes:


After seeing the basics of deploying a MySQL server in Docker, in this article we will lay the foundations to customising a node and eventually using more than one server, so that we can cover replication in the next one.
Enabling GTID: the dangerous approach.To enable GTID, you need to set five variables in the database server:






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MySQL-Docker operations. - Part 1: Getting started with MySQL in Docker
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Docker is one of the fastest growing trends in IT. It allows fast deployment of services and applications on a Linux machine (and, with some limits, on other operating systems). Compared to other methods of deploying databases, such as virtual machines or application isolation, it offers faster operations and better performance.
Many people, surprised by the sudden advance of this technology, keep asking What is Docker? And why you should use it?
I will write soon an article with a …

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Sound advice for GTID, with caveats
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During the PerconaLive conference in Amsterdam, I attended a session where I heard a good piece of advice about using GTID. It amounts to: look at SHOW SLAVE STATUS output, and if you see more than one line in the Executed_Gtid_Set field, this tells you immediately if someone has written on a slave database.
This is good advice. Let's dissect it. Here is what a regular slave looks like, when nobody has messed up with it:

SHOW SLAVE STATUS\G
*************************** 1. row ***************************
[...]





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Advanced MySQL Server Auditing
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We remember when we first started auditing MySQL servers, there were very few tools available.  In one of our early big gigs, we were battling serious performance issues for a client.  At the time, tuning-primer.sh was about the only tool available that could be used to diagnose performance bottlenecks.  Fortunately, with a lot of manual interpolation of the raw data it presented, we were able to find the issue with the server and suggest how to resolve them.  For that we are very thankful.  It was a first step in analyzing MySQL status variables, minimizing the number of formulas to learn and calculate by hand.  Obviously …

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MySQL Health Check Script
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Ever get called out for a MySQL issue only to realize that there was no issue?  It was a false alarm from the monitor.  We sure have and it’s frustrating, especially at 3:00 or 4:00 in the morning!

Many DBAs work in an environment where there is some sort of first level support that gets assigned tickets first.  Unfortunately, many of the times these groups are, shall we say, less than skilled in MySQL.  As a result, they quickly escalate the ticket onto the primary on-call DBA, even when there is really nothing wrong.

Much of the time, there are multiple types of MySQL topology in these environments: standalone, galera cluster, …

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Improving ETL Load Speed Into MySQL
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Introduction

This document outlines best practices for loading data into MySQL very quickly.  While this is not a comprehensive list of loading methods and configuration, it is a good starting point.

MySQL Configuration

Assuming you are loading into InnoDB tables (and you should probably be doing so), you will want to ensure that MySQL is properly performance tuned for loading large amounts of data.  Out of the box MySQL configuration is rarely sufficient for performance with MySQL.  It is essential that the InnoDB settings, in particular, be set properly.

First of all, consider the …

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Standardized MySQL Configuration File For Standalone, Replication, & Clustering
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In order to simplify the configuration of MySQL for standalone nodes, clusters, and replication configurations, we decided it would be easiest to maintain a common my.cnf file.  We have to admit, the idea wasn’t ours; we picked the idea up from www.fromdual.com and thought it was such a great idea, we decided to implement it as well.

Below is our version of a standardized my.cnf implementing several of our best practices.  We hope it will be of benefit to you.

########################################################################################################
# my.cnf (Configuration file for …

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LDAP Authentication in MySQL
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We manage hundreds of servers and have a need to add and remove DBAs, application developers, and so on regularly. Doing this manually is just beyond the scope of what we can realistically manage. Since we are already using LDAP, we wanted to find a way to integrate it with MySQL.

After reading many, many articles and getting diverse opinions as to whether or not it was even possible, we decided to give it a try. From what we read, it appears that MySQL Enterprise edition does exactly what we want; unfortunately, we don’t have an Enterprise support contract ruling that out as an option. Knowing that Percona tends to mimic many of the Enterprise features, we …

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Showing entries 1 to 10 of 37 10 Older Entries

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