BackingUp MySQL

8/13/2019 BackingUp MySQL

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Copyright 2013, Oracle and/or its affiliates. All rights reserved.2

Backing Up the MySQLDatabase

Sanjay ManwaniMySQL India Director


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Program Agenda

Understanding Backup

MySQL Enterprise Backup (MEB)

Backup Strategies

Whats New in MEB 3.9


5/37Copyright 2013, Oracle and/or its affiliates. All rights reserved.5

Understanding Backup


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Why Backup is important

Audits

Disasters

Is HA setup a backup ?

Is LVM a backup ?


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Types of Backup and Tools for these ty

Logical

Mysqldump

Mysqldbexport/import

Physical

MySQL Enterprise Backup (MEB)


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Logical Backup

Advantages

Easy of use - simple commands allow you to easily backu

Good for small database or tablesminimum impact on

restore performance

Flexibilitylogical backup allows you to choose what you

and not backup. Change the scripts to restore partially etc

Readability - Good assurance that database files are not

data is read and it is read using standard SQL queries.

Collection of SQL Queries to recreate the database


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Logical Backup

Disadvantages

Not an online solution - write operations are locked while

backup, thereby blocking use of the database.

Poor performance for larger databasesbackup and esp

times are very slow for larger databases.

Not consistentdatabase wont necessarily be restored state.

No incremental backupall backups are full backups, ca

consuming and require more storage.

Collection of SQL Queries to recreate the database


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Physical Backup (MEB)

Advantages

Performancefaster for backups and faster for restore

Flexiblesupport for incremental backups, partial backup

compression, point in time recovery and more.

Archival Backupssuitable archival format for historical

Scalableperformance is near linear for larger databases

Consistentdelivers consistent point in time recovery

Copy of the internal files that constitute the MySQL databa


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Physical v/s LogicalBackup

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2

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Category 1 Category 2 Category 3

Series 1 Series 2 Series 3

Comparison Summary


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MEB Backup

Full Backup

Incremental BackupFile based

and Redo log only

Compressed Backup

Backup to Single File/Image Backup to tape

Partial Backup

What is methods are available to choose from


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MEBApply log

InnoDB consists of pages with

information about the LSNnumber applicable to the page

Applylog scans the InnoDB redo

log and applies the relavant

changes to the InnoDB page and

upto the correct LSN to beapplied

The intermediate step


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MEBRecovery

Copyback

New! copyback-and-apply-log

Validate

Recovery is what is important


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MEB Single image manipulation

validate

Ensure that the checksums are consistent list image

Find the files that this image contains

Extract

Extract files from the image

image-to-backup-dir

Extract the full image into a directory

backup-dir-to-image

Convert a backup directory into a image

Manage the backup archive/image


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MEB External Interaction

Tape and Backup Solutions

Oracle secure backup Netbackup

Workbench

Scheduling

Monitoring

MySQL Enterprise Monitor

Advisors

MEB integrates with external products


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SBT InterfaceTape and Backup Solutions


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Oracle Secure BackupTape and Backup Solutions

A general-purpose network

data protection tool thatsimplifies and automates

the backup and restore of

files on a file system.

A media management

layer for RecoveryManager through the SBT

interface.

Integrates with a wide

variety of tertiary devices


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WorkbenchMEB & Workbench

Integrates with

MEB

Allows setup of

automatic backup

schedules


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Allows some

options

Keeps information

about backups


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Helps setup and

validates thesetup

Helps in recovery


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MEMMySQL Enterprise Monitor

Integrates with MEB

Generates events ifthe backup is not

taken within specified

amount of time

MEB advisors in MEM

MEM


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MEM

Allows thresholds to be

setAdvises users to backup

within their thresholds

MEB advisors in MEM


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Backup Strategies

B k St t i


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Backup Strategies

Always need to be tailored based on environment data growth, read v/s write usage, size of DB, user base, d

Based on backup policies of your organization

Account for spurts in data growth

Account for schema modificationBefore and after Needs to take into account quiet periods

Needs to take into account your H/W and storage infrast

IMPORTANTLYBased on your restore requirement

.

A comprehensive plan for backup and recovery


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E l R St t


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Example Recovery StrategyA comprehensive plan for backup and recovery

Recoverlog to FullBackup For past 3 days

RecoverIncremental

Backup 3 days to 1 week

ArchBack Archi

backuthan

to tap Delet

moremont


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Whats New in MEB 3.9

Whats New in MEB


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Whats New in MEB

New! Single Step

Restore directly.

New! Full Instance

Config/Settings/

New! Selective

Leverages TTS Great for large tables

New! Skip Unused Page

Reduces space

Continuous progress

%, Bytes, Status

Monitor disk space

Optional actions

Warn & Retry, Abor

Usability, usability usability

Selective backup with TTS


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Selective backup with TTS

MySQL 5.6 feature : Transportable Table spaces Online table portability : Import/Export

Why use with MEB

Locking time

Ease of use

What is TTS, why better than normal partial backup

Skip Unused pages


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Skip Unused pages

InnoDB files dont shrink

A small DB has many unused pages

There is a performance penalty

Cleaning up before a backup

References


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References

MySQL Enterprise Backup: Product Information

www.mysql.com/products/enterprise/backup.html

MySQL Enterprise Backup Team Blog

https://blogs.oracle.com/mysqlenterprisebackup/

MySQL Enterprise Backup: Documentation

dev.mysql.com/doc/mysql-enterprise-backup/3.9/en/index.

How Do I get it https://edelivery.oracle.com

Support and patches (My Oracle Support = MOS)

https://support.oracle.com
http://www.mysql.com/products/enterprise/backup.htmlhttp://www.mysql.com/products/enterprise/backup.html


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