一、MySQL的日常備份方案：

全備+增量備份：

1、周日凌晨三點進行全備；

2、周一到周日增量備份。

不是往常的周日全備份，周一到周六增量備份，這樣如果周日數據庫在完全備份前出問題，恢復完成后，會少周日一天的數據量，所以七天增量備份，周日全備可以更好的保全數據。

這是備份周期演示表：Sun?3:00------Mon?3:00-----------------Tue?3:00----------Wed?3:00----------Thu?3:00----------Fri?3:00----------Sat?3:00----------Sun?3:00

(flush)Sun?full---(flush)Sun->Mon?binlog---(flush)Mon->Tue---(flush)Tue->Wed---(flush)Wed->Thu---(flush)Thu->Fri---(flush)Fri->Sat---(flush)Sun?full---(flush)Sun->Mon?binlog---(flush)Mon->Tue---(flush)Tue->Wed---(flush)Wed->Thu---(flush)Thu->Fri---(flush)Fri->Sat---(flush)Sun?full

二、備份腳本：

模塊化定制，可以隨意移動，調節備份策略！

變量欄的帳號密碼，文件路徑根據自己實際環境可以進行修改，自由度比較高，模塊函數全變量，適用度較高，但是可能還有不完善的地方，歡迎提出，謝謝！vim?/root/mysql_bakup.sh

#!/bin/bash

#Date:2017/5/2

#Author:wangpengtai

#Blog:http://wangpengtai.blog.51cto.com

#At?Sunday,?we?will?backup?the?completed?databases?and?the?incresed?binary?log?during?Saturday?to?Sunday.

#In?other?weekdays,?we?only?backup?the?increaing?binary?log?at?that?day!

################################

#the?globle?variables?for?MySQL#

################################

DB_USER='root'

DB_PASSWORD='123456'

DB_PORT='3306'

BACKUPDIR='/tmp/mysqlbakup'

BACKUPDIR_OLDER='/tmp/mysqlbakup_older'

DB_PID='/data/mysql/log/mysqld.pid'

DB_SOCK='/data/mysql/log/mysql.sock'

LOG_DIR='/data/mysql/log'

BACKUP_LOG='/tmp/mysqlbakup/backup.log'

DB_BIN='/usr/local/mysql/bin'

#time?variables?for?completed?backup

FULL_BAKDAY='Sunday'

TODAY=`date?+%A`

DATE=`date?+%Y%m%d`

###########################

#time?variables?for?binlog#

###########################

#liftcycle?for?saving?binlog

DELETE_OLDLOG_TIME=$(date?"-d?14?day?ago"?+%Y%m%d%H%M%S)

#The?start?time?point?to?backup?binlog,?the?usage?of?mysqlbinlog?is?--start-datetime,?--stop-datetime,?time?format?is?%Y%m%d%H%M%S,?eg:20170502171054,?time?zones?is??[start-datetime,?stop-datetime)

#The?date?to?start?backup?binlog?is?yesterday?at?this?very?moment!

START_BACKUPBINLOG_TIMEPOINT=$(date?"-d?1?day?ago"?+"%Y-%m-%d?%H:%M:%S")

#BINLOG_LIST=`cat?/data/mysql/log/mysql-bin.index`

#注意在my.cnf中配置binlog文件位置時需要使用絕對路徑，一定想成好習慣，不要給別人挖坑！！

#####################舉例########################

#[mysqld]

#log_bin?=?/var/lib/mysql/mysql-bin

#####################舉例########################

BINLOG_INDEX='/data/mysql/log/mysql-bin.index'

##############################################

#Judge?the?mysql?process?is?running?or?not.??#

#mysql?stop?return?1,?mysql?running?return?0.#

##############################################

function?DB_RUN(){

if?test?-a?$DB_PID?&&?test?-a?$DB_SOCK;then

return?0

else

return?1

fi

}

###################################################################################################

#Judge?the?bacup?directory?is?exsit?not.??????????????????????????????????????????????????????????#

#If?the?mysqlbakup?directory?was?exsited,?there?willed?return?0.??????????????????????????????????#

#?If?there?is?no?a?mysqlbakup?directory,?the?fuction?will?create?the?directory?and?return?value?1.#

###################################################################################################

function?BACKDIR_EXSIT(){

if?test?-d?$BACKUPDIR;then

#????????echo?"$BACKUPDIR?was?exist."

return?0

else

echo?"$BACKUPDIR?is?not?exist,?now?create?it."

mkdir?-pv?$BACKUPDIR

return?1

fi

}

###################################################################################################

#Judge?the?binlog?is?configed?or?not.??????????????????????????????????????????????????????????#

#If?the?mysqlbakup?directory?was?exsited,?there?willed?return?0.??????????????????????????????????#

#?If?there?is?no?a?mysqlbakup?directory,?the?fuction?will?create?the?directory?and?return?value?1.#

###################################################################################################

function?BINLOG_EXSIT(){

if?test?-f?$BINLOG_INDEX;then

#????????echo?"$BACKUPDIR?was?exist."

return?0

fi

}

###################################################

#The?full?backup?for?all?Databases????????????????#

#This?function?is?use?to?backup?the?all?databases.#

###################################################

function?FULL_BAKUP(){

echo?"At?`date?+%D\?%T`:?Starting?full?backup?the?MySQL?DB?...?"

#????rm?-fr?$BACKUPDIR/db_fullbak_$DATE.sql??#for?test?!!

$DB_BIN/mysqldump?--lock-all-tables?--flush-logs?--master-data=2?-u$DB_USER?-p$DB_PASSWORD?-P$DB_PORT?-A?|gzip?>?$BACKUPDIR/db_fullbak_$DATE.sql.gz

FULL_HEALTH=`echo?$?`

if?[[?$FULL_HEALTH?==?0?]];then

echo?"At?`date?+%D\?%T`:?MySQL?DB?incresed?backup?successfully"

else

echo?"MySQL?DB?full?backup?failed!"

fi

}

#python

#?>>>?with?open('/data/mysql/log/mysql-bin.index','r')?as?obj:

#?...????for?i?in?obj:

#?...???????print?os.path.basename(i)

#?...

#?mysql-bin.000006

#?mysql-bin.000007

#?mysql-bin.000008

#?mysql-bin.000009

function?INCREASE_BAKUP(){

echo?"At?`date?+%D\?%T`:?Starting?increased?backup?the?MySQL?DB?...?"

$DB_BIN/mysqladmin?-u$DB_USER?-p$DB_PASSWORD?-P$DB_PORT?flush-logs

$DB_BIN/mysql?-u$DB_USER?-p$DB_PASSWORD?-P$DB_PORT?-e?"purge?master?logs?before?${DELETE_OLDLOG_TIME}"

for?i?in?`cat?$BINLOG_INDEX?|?awk?-F'/'?'{print?$NF}'`

do

$DB_BIN/mysqlbinlog?-u$DB_USER?-p$DB_PASSWORD?-P$DB_PORT?--start-datetime="$START_BACKUPBINLOG_TIMEPOINT"?$LOG_DIR/$i?|gzip?>>?$BACKUPDIR/db_daily_$DATE.sql.gz

done

#?$DB_BIN/mysqlbinlog?-u$DB_USER?-p$DB_PASSWORD?-P$DB_PORT?--start-datetime="$START_BACKUPBINLOG_TIME"?$LOG_DIR/mysql-bin.[0-9]*?|gzip?>>?$BACKUPDIR/db_daily_$DATE.sql.gz

INCREASE_HEALTH=`echo?$?`

if?[[?$INCREASE_HEALTH?==?0?]];then

echo?"At?`date?+%D\?%T`:?MySQL?DB?incresed?backup?successfully"

else

echo?"MySQL?DB?incresed?backup?failed!"

fi

}

function?OLDER_BACKDIR_EXSIT(){

if?test?-d?$BACKUPDIR_OLDER;then

#????????echo?"$BACKUPDIR_OLDER?was?exist."

return?0

else

echo?"$BACKUPDIR_OLDER?is?not?exist,?now?create?it."

mkdir?-pv?$BACKUPDIR_OLDER

#????????return?1

fi

}

function?BAKUP_CLEANER(){

#move?the?backuped?file?that?created?time?out?of?7?days?to?the?BACKUPDIR_OLDER?directory

returnkey=`find?$BACKUPDIR?-name?"*.sql.gz"?-mtime?+7?-exec?ls?-lh?{}?\;`

returnkey_old=`find?$BACKUPDIR_OLDER?-name?"*.sql.gz"?-mtime?+14?-exec?ls?-lh?{}?\;`

if?[[?$returnkey?!=?''?]];then

echo?"----------------------"

echo?"Moving?the?older?backuped?file?out?of?7?days?to?$BACKUPDIR_OLDER."

echo?"The?moved?file?list?is:"

find?$BACKUPDIR?-name?"*.sql.gz"?-mtime?+7?-exec?mv?{}?$BACKUPDIR_OLDER?\;

echo?"-----------------------"

elif?[[?$returnkey_old?!=?''?]];then

#delete?the?backuped?file?that?created?time?out?of?14?days?from?BACKUPDIR_OLDER?directory.

echo?"Delete?the?older?backuped?file?out?of?14?days?from?$BACKUPDIR_OLDER."

echo?"The?deleted?files?list?is:"

find?$BACKUPDIR_OLDER?-name?"*.sql.gz"?-mtime?+14?-exec?rm?-fr?{}?\;

fi

}

####################################

#--------------main----------------#

####################################

function?MAIN(){

DB_RUN?#Judge?the?process?is?run?or?not,?if?not?run,?the?script?will?not?bakup?db

Run_process=`echo?$?`

echo?$?

if?[[?$Run_process?==?0?]];then

BINLOG_EXSIT

binlog_index=`echo?$?`

if?[[?$binlog_index?==?0?]];then

echo?"**********START**********"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

if?[[?$TODAY?==?$FULL_BAKDAY?]];then

echo?"Start?completed?bakup?..."

INCREASE_BAKUP

FULL_BAKUP????#full?backup?to?all?DB

BAKUP_CLEANER

else

echo?"Start?increaing?bakup?..."

INCREASE_BAKUP

fi

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"**********END**********"

else

echo?"**********START**********"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

echo?"Sorry,?MySQL?binlog?was?not?configed,?please?config?the?my.cnf?firstly!"

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"**********END**********"

fi

else

echo?"**********START**********"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

echo?"Sorry,?MySQL?was?not?running,?the?db?could?not?be?backuped!"

echo?"~~~~~~~~~~~~~~~~~~~~~~~"

echo?$(date?+"%y-%m-%d?%H:%M:%S?%A")

echo?"**********END**********"

fi

}

#starting?runing

BACKDIR_EXSIT?$BACKUP_LOG

OLDER_BACKDIR_EXSIT?$BACKUP_LOG

MAIN?>>?$BACKUP_LOG

三、測試方法：

使用了一個測試腳本，修改日期，達到一個月的演示效果。#!/bin/bash

for?day?in?{1..30}

do

date?-s?"2017-06-$day?12:00:00"

/bin/bash?/root/bakup/mysql_backup.sh

done

四、腳本使用方法：crontab?-e

0?3?*?*?*??/bin/bash?/root/bakup/mysql_bakup.sh?>?/dev/null?2>&1?空格

#加個空格，不然有些機器不能執行腳本

總結

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