Centos7 mysqldump定时任务,对mysql定时备份数据

vi mysqldump_bak.sh

#!/bin/bash

PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin

export PATH

export LANG=en_US.UTF-8

time="$(date +"%Y%m%d%H%M%S")"

savedir=/cloud/backup/mysql/$time

mkdir -p "$savedir"

cd "$savedir"

/usr/bin/mysqldump -h 127.0.0.1 -uroot -p123456 paas_portal  > paas_portal_"$time".sql

/usr/bin/mysqldump -h 127.0.0.1 -uroot -p123456 paas_permission > paas_permission_"$time".sql

/usr/bin/mysqldump -h 127.0.0.1 -uroot -p123456 paas_bpm > paas_bpm_"$time".sql

/usr/bin/mysqldump -h 127.0.0.1 -uroot -p123456 paas_message_center > paas_message_center_"$time".sql

示例如下（需要在my.cnf下添加  [mysqldump]  user password）

添加脚本 vi /data/app/mysqldump/mysqldump_bak.sh

#!/bin/sh

# This  is a ShellScript For Auto DB Backup and Delete old Backup

# back path

backupdir=/data/databackup

time=` date +%Y%m%d%H `

#MYSQL_PWD=$(admindev123$%^) && mysqldump  -u root -p$(admindev123$%^) cmccepidemic | gzip > $backupdir/cmccepidemic$time.sql.gz

mysqldump cmccepidemic | gzip > $backupdir/cmccepidemic$time.sql.gz

#keep leave 7 days

find $backupdir -name "name_*.sql.gz" -type f -mtime +7 -exec rm {} \; > /dev/null 2>&1

对docker中的mysql备份

Vi back.sh  (编写备份shell脚本)

#!/bin/bash

rm -f /data/epidemic-data-$(date -d -5day +%Y%m%d-*).sql

DATE=`date +%Y%m%d-%H%M`

BACK_DATA=epidemic-data-${DATE}

# mysql-db 是数据库的 docker 名称, xxxpwd 是 root 用户密码, app-db 是要备份的数据名称

docker exec -i mysql  mysqldump epidemic -uroot -padmindev123$%^  > /data/${BACK_DATA}.sql

修改

/etc/crontab

SHELL=/bin/bash

PATH=/sbin:/bin:/usr/sbin:/usr/bin

MAILTO=root

# For details see man 4 crontabs

# Example of job definition:

# .---------------- minute (0 - 59)

# |  .------------- hour (0 - 23)

# |  |  .---------- day of month (1 - 31)

# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...

# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat

# |  |  |  |  |

# *  *  *  *  * user-name  command to be executed

#添加如下

20 3  *  *  * root   sh  /data/app/mysqldump/mysqldump_bak.sh

也可以将多个数据库写成数据 ，如 db = (“paas_portal” “paas_permission” “paas_message_center”)

进行备份，对备份进行压缩 如

/usr/bin/mysqldump -h 127.0.0.1 -uroot -p123456 paas_message_center |gzip > paas_message_center_"$time".sql

导入备份的文件gz压缩文件导入mysql数据库（不需要解压）

gunzip < ./dmdb-20180601.sql.gz | mysql -uroot -p123456 databaseName