MySQL 8 Cookbook

Book Image

MySQL 8 Cookbook

By : Karthik Appigatla

Book Image

MySQL 8 Cookbook

By: Karthik Appigatla

Overview of this book

MySQL is one of the most popular and widely used relational databases in the World today. The recently released MySQL 8 version promises to be better and more efficient than ever before. This book contains everything you need to know to be the go-to person in your organization when it comes to MySQL. Starting with a quick installation and configuration of your MySQL instance, the book quickly jumps into the querying aspects of MySQL. It shows you the newest improvements in MySQL 8 and gives you hands-on experience in managing high-transaction and real-time datasets. If you've already worked with MySQL before and are looking to migrate your application to MySQL 8, this book will also show you how to do that. The book also contains recipes on efficient MySQL administration, with tips on effective user management, data recovery, security, database monitoring, performance tuning, troubleshooting, and more. With quick solutions to common and not-so-common problems you might encounter while working with MySQL 8, the book contains practical tips and tricks to give you the edge over others in designing, developing, and administering your database effectively.

Title Page

Dedication

Packt Upsell

Contributors

Preface

Free Chapter

MySQL 8 - Installing and Upgrading

MySQL 8 - Installing and Upgrading

Installing MySQL using YUM/APT

Installing MySQL 8.0 using RPM or DEB files

Installing MySQL on Linux using Generic Binaries

Starting or Stopping MySQL 8

Uninstalling MySQL 8

Managing the MySQL Server with systemd

Downgrading from MySQL 8.0

Upgrading to MySQL 8.0

Installing MySQL utilities

Using MySQL

Connecting to MySQL using the command-line client

Creating databases

Creating tables

Inserting, updating, and deleting rows

Loading sample data

Sorting results

Grouping results (aggregate functions)

Granting and revoking access to users

Selecting data into a file and table

Loading data into a table

Stored procedures

Getting information about databases and tables

Using MySQL (Advanced)

Using MySQL (Advanced)

Common table expressions (CTE)

Generated columns

Window functions

Configuring MySQL

Configuring MySQL

Using config file

Using global and session variables

Using parameters with startup script

Configuring the parameters

Changing the data directory

Transactions

Performing transactions

Using savepoints

Isolation levels

Binary Logging

Using binary logging

Binary log format

Extracting statements from a binary log

Ignoring databases to write to a binary log

Relocating binary logs

Backups

Taking backups using mysqldump

Taking backups using mysqlpump

Taking backups using mydumper

Taking backups using flat files

Taking backups using XtraBackup

Locking instances for backup

Binary log backup

Restoring Data

Recovering from mysqldump and mysqlpump

Recovering from mydumper using myloader

Recovering from flat file backup

Performing point-in-time recovery

Replication

Setting up replication

Setting up master-master replication

Setting up multi-source replication

Setting up replication filters

Switching slave from master-slave to chain replication

Switching the slave from chain replication to master-slave

Setting up delayed replication

Setting up GTID replication

Setting up semi-synchronous replication

Table Maintenance

Table Maintenance

Installing Percona Toolkit

Altering tables

Moving tables across databases

Altering tables using an online schema change tool

Archiving tables

Partitioning tables

Partition pruning and selection

Partition management

Partition information

Efficiently managing time to live and soft delete rows

Managing Tablespace

Managing Tablespace

Changing the number or size of InnoDB redo log files

Resizing the InnoDB system tablespace

Creating file-per-table tablespaces outside the data directory

Copying file-per-table tablespaces to another instance

Managing UNDO tablespace

Managing general tablespace

Compressing InnoDB tables

Managing Logs

Managing the error log

Managing the general query log and slow query log

Managing the binary logs

Performance Tuning

Performance Tuning

The explain plan

Benchmarking queries and the server

Invisible index

Descending index

Analyzing slow queries using pt-query-digest

Optimizing datatypes

Removing duplicate and redundant indexes

Checking index usage

Controlling the query optimizer

Using index hints

Indexing for JSON using generated columns

Using resource groups

Using performance_schema

Using the sys schema

Security

Securing installation

Restricting networks and users

Password-less authentication using mysql_config_editor

Resetting the root password

Setting up encrypted connections using X509

Setting up SSL replication

Index

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Setting up master-master replication

This recipe will interest many people since many of us try doing this. Let's get into the details of it.

How to do it...

Assume that the masters are master1 and master2.

Steps:

Set up replication between master1 and master2 as described in Chapter 9, Replication.
Make master2 read-only:

mysql> SET @@GLOBAL.READ_ONLY=ON;

On master2, check the current binary log coordinate.

mysql> SHOW MASTER STATUS;
+----------------+----------+--------------+------------------+-------------------+
| File           | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+----------------+----------+--------------+------------------+-------------------+
| server1.000017 |      473 |              |                  |                   |
+----------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

From the preceding output, you can start the replication on master1 from server1.000017 and position 473.

From the positions...