Mysql full backup and Incremental Backup implementation method, mysql incremental

Mysql full backup and Incremental Backup implementation method, mysql incremental

Mysql full backup and Incremental backup. Enable the logbin log function of mysql. Add the following code to the/etc/my. cnf file:

[mysqld]log-bin = "/home/mysql/logbin.log"binlog-format = ROWlog-bin-index = "/home/mysql/logindex"binlog_cache_size=32mmax_binlog_cache_size=512mmax_binlog_size=512m

Restart mysql. The users and groups in the path/home/mysql should be changed to mysql.

2. Incremental Backup
Create the following directory in the/home/mysql/directory:

mkdir -p /home/mysql/backup/daily

Incremental backup script

Cd/home/mysqlvi binlogbak. sh #! /Bin/bashexport LANG = en_US.UTF-8BakDir =/home/mysql/backup/dailyBinDir =/home/mysqlLogFile =/home/mysql/backup/binlog. logBinFile =/home/mysql/logindex. indexmysqladmin-uroot-proot123 flush-logs # This is used to generate new mysql-bin.00000 * file Counter = 'wc-l $ BinFile | awk '{print $1} ''NextNum = 0 # this for loop is used to compare $ Counter, $ NextNum is used to determine whether the file exists or is up-to-date. For file in 'cat $ binfile' do base = 'basename $ file' # basename is used to intercept the mysql-bin.00000 * file name, remove. /mysql-bin.000005 front. /NextNum = 'expr $ NextNum + 1' if [$ NextNum-eq $ Counter] then echo $ base skip! >>$ LogFile else dest = $ BakDir/$ base if (test-e $ dest) # test-e is used to check whether the target file exists. if yes, write exist! Go to $ LogFile. Then echo $ base exist! >>$ LogFile else cp $ BinDir/$ base $ BakDir echo $ base copying >>$ LogFile fi fidoneecho 'date + "% Y % m % d % H: % M: % S "'bakup succ! >>$ LogFile

Grant binlogbak. sh execution permission

chmod a+x /home/mysql/binlogbak.sh

3. Full backup

Vi databak. sh #! /Bin/bashexport LANG = en_US.UTF-8BakDir =/home/mysql/backupLogFile =/home/mysql/backup/bak. logDate = 'date + % Y % m % d' Begin = 'date + "% Y % m month % dday % H: % M: % S "'CD $ BakDirDumpFile = $ Date. sqlGZDumpFile = $ Date. SQL. tgzmysqldump-uroot-proot123 -- all-databases -- flush-logs -- delete-master-logs -- single-transaction> $ DumpFiletar-czvf $ GZDumpFile $ DumpFilerm $ DumpFilecount = $ (ls-l *. tgz | wc-l) if [$ count-ge 5] thenfile = $ (ls-l *. tgz | awk '{print $9}' | awk 'nr = 1 ') rm-f $ filefi # retain only the database content in the past four weeks Last = 'date + "% Y % m month % d % H: % M: % S" 'echo start: $ Begin end: $ Last $ GZDumpFile succ> $ LogFilecd $ BakDir/dailyrm-f *

Grant databak. sh execution permission

chmod a+x /home/mysql/databak.sh

4. Enable scheduled tasks

Vi/etc/crontab # execute the full backup script 0 3 ** 0/home/mysql/databak at every Sunday. sh>/dev/null 2> & 1 # perform Incremental backup at from Monday to Saturday 0 3 ** 1-6/home/mysql/binlogbak. sh>/dev/null 2> & 1

Make the preceding scheduled task take effect

crontab /etc/crontab

View scheduled tasks

crontab -l

Complete.