分享一个自动编写MySQL数据库备份脚本，值得收藏

其实主要是为了偷懒，所以就搞了一个自动编写MySQL 数据库备份脚本，每次写备份脚本传参就可以了，仅供参考。

1. MySQL备份模板(上传到下载平台)

#!/bin/bash

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

# copyright by hwb

# DATE:2020-12-03

# 用途：MYSQL备份模板

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

#定义

db_host=localhost

db_port=3306

db_name=mysql_prod

db_user=root

db_pwd=password

backup_path="/data/backup"

# view,function,procedure,event,trigger

output_type='view,function,procedure,event,trigger'

today=`date +"%Y%m%d-%H%M%S"`

data_file=$backup_path/$db_name$today.sql

object_file="${backup_path}/obj_${db_name}$today.sql"

log_file="/home/scripts/mysql_backup.log"

mysql_cmd="mysql -u${db_user} -p${db_pwd} -h${db_host} -P${db_port} "

mysqldump_cmd="mysqldump -u${db_user} -p${db_pwd} -h${db_host} -P${db_port} $db_name "

#调用函数库

[ -f /etc/init.d/functions ] && source /etc/init.d/functions

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

source /etc/profile

#Require root to run this script.

[ $(id -u) -gt 0 ] && echo "请用root用户执行此脚本！" && exit 1

[ -d $backup_path ] || mkdir -p $backup_path

#[ ! -n "$5" ] && echo -e "\033[31m Usage: $0 IP 端口实例名用户名 '密码'  \033[0m" && exit 1

function mysql_backup()

{

  echo ""

  echo -e "\033[33m***********************************************mysql数据库备份****************************************************\033[0m"



  echo -e "\033[36m**************备份数据库数据到$data_file**************\033[0m"

  #A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that changed suppressed parts of the database. If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete dump, pass --all-databases --triggers --routines --events

  $mysqldump_cmd --single_transaction -R -E --flush-logs --master-data=2 --set-gtid-purged=OFF > $data_file



  if [ $? -eq 0 ];then

    action "[$today]>>>完成数据库${db_name}数据备份" /bin/true

    echo "[$today]>>>完成数据库${db_name}数据备份" >> ${log_file}

  else

    action "[$today]>>>数据库${db_name}备份失败，请检查相关配置！" /bin/false

    echo "[$today]>>>数据库${db_name}备份失败，请检查相关配置！" >> ${log_file}

    exit 1

  fi





  echo -e "\033[36m*******备份${db_name}函数、视图等定义到$object_file***********\033[0m"

  cat > $object_file<<EOF

ouput object‘s definition for database "$db_name"

ouput time: $(date "+%Y-%m-%d %H:%M:%S")

ouput object type: $output_type

EOF

  echo "">> $object_file

  echo "">> $object_file



  # 视图

  if [[ $output_type == *"view"* ]]

  then

    echo "-- ------------------------------------------------------------" >> $object_file

    echo "-- views" >> $object_file

    echo "-- ------------------------------------------------------------" >> $object_file

    #让 MySQL不输出列名可以用-N 或者--skip-column-names参数

    $mysql_cmd  --skip-column-names \

    -e "select concat('SHOW CREATE VIEW ',table_schema,'.',table_name,';') from information_schema.views where table_schema='$db_name'" |\

    sed 's/;/\\G/g' | $mysql_cmd $db_name |\

    sed 's/Create View: /kk_begin\n/g' | sed 's/[ ]*character_set_client:/;\nkk_end/g' |\

    sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}'  >> $object_file

  fi



  # 函数

  if [[ $output_type == *"function"* ]]

  then

    echo "-- ------------------------------------------------------------" >> $object_file

    echo "-- function" >> $object_file

    echo "-- ------------------------------------------------------------" >> $object_file

    $mysql_cmd --skip-column-names \

    -e "select concat('SHOW CREATE FUNCTION ',routine_schema,'.',routine_name,';') from information_schema.routines where routine_schema='$db_name' and ROUTINE_TYPE='FUNCTION'" |\

    sed 's/;/\\G/g' | $mysql_cmd $db_name |\

    sed 's/Create Function: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\

    sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $object_file

  fi



  # 存储过程

  if [[ $output_type == *"procedure"* ]]

  then

    echo "-- ------------------------------------------------------------" >> $object_file

    echo "-- procedure" >> $object_file

    echo "-- ------------------------------------------------------------" >> $object_file

    $mysql_cmd --skip-column-names \

    -e "select concat('SHOW CREATE PROCEDURE ',routine_schema,'.',routine_name,';') from information_schema.routines where routine_schema='$db_name' and ROUTINE_TYPE='PROCEDURE'" |\

    sed 's/;/\\G/g' | $mysql_cmd  $db_name |\

    sed 's/Create Procedure: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\

    sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $object_file

  fi



  # 事件

  if [[ $output_type == *"event"* ]]

  then

    echo "-- ------------------------------------------------------------" >> $object_file

    echo "-- event" >> $object_file

    echo "-- ------------------------------------------------------------" >> $object_file

    $mysql_cmd --skip-column-names \

    -e "select concat('SHOW CREATE EVENT ',EVENT_SCHEMA,'.',EVENT_NAME,';') from information_schema.events where EVENT_SCHEMA='$db_name'" |\

    sed 's/;/\\G/g' | $mysql_cmd |\

    sed 's/Create Event: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\

    sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $object_file

  fi



  # 触发器

  if [[ $output_type == *"trigger"* ]]

  then

    echo "-- ------------------------------------------------------------" >> $object_file

    echo "-- trigger" >> $object_file

    echo "-- ------------------------------------------------------------" >> $object_file

    $mysql_cmd --skip-column-names \

    -e "select concat('SHOW CREATE TRIGGER ',TRIGGER_SCHEMA,'.',TRIGGER_NAME,';') from information_schema.triggers where TRIGGER_SCHEMA='$db_name';" |\

    sed 's/;/\\G/g' | $mysql_cmd $db_name|\

    sed 's/SQL Original Statement: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\

    sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $object_file

  fi



  # ^M, you need to type CTRL-V and then CTRL-M

  sed -i "s/\^M//g" $object_file

  #清理过期备份

  find ${backup_path}  -mtime +10  -type f -name '*.sql' -exec rm -f {} \;



  if [ $? -eq 0 ];then

    action "[$today]>>>完成数据库${db_name}过期备份清理" /bin/true

    echo "[$today]>>>完成数据库${db_name}过期备份清理" >> ${log_file}

  else

    action "[$today]>>>数据库${db_name}过期备份清理失败，请检查相关配置！" /bin/false

    echo "[$today]>>>数据库${db_name}过期备份清理失败，请检查相关配置！" >> ${log_file}

    exit 1

  fi



  echo -e "\033[33m**********************************************完成${db_name}数据库备份**********************************************\033[0m"

cat > /tmp/mysql_backup.log  << EOF

mysql地址：${db_host}

mysql端口：${db_port}

mysql实例名：${db_name}

数据备份文件：${data_file}

定义备份文件：${object_file}

EOF

  cat /tmp/mysql_backup.log

  echo -e "\e[1;31m 以上信息保存在/tmp/mysql_backup.log文件下 \e[0m"

  echo -e "\033[33m*******************************************************************************************************************\033[0m"

  echo ""

}

mysql_backup

2. 自动编写MySQL数据库备份脚本

#!/bin/bash

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

# copyright by hwb

# DATE: 2020-12-04

# 用途：自动编写MySQL备份脚本

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

#脚本外变量

mysql_path="/home/scripts"

script_name="mysql_backup.sh"

mysql_date=`date +"%Y-%m-%d-%H:%M:%S"`

#脚本内变量

db_host="localhost"

db_port="53306"

db_name="dbname"

db_user="root"

db_pwd="xxxx"

backup_path="/data/backup"

bk_backup_path=`echo $backup_path | sed 's:\/:\\\/:g'`

bk_db_pwd=`echo $db_pwd | sed 's:\/:\\\/:g'`

#调用函数库

[ -f /etc/init.d/functions ] && source /etc/init.d/functions

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

source /etc/profile

#root用户执行脚本

[ $(id -u) -gt 0 ] && echo "请用root用户执行此脚本！" && exit 1

#判断目录是否存在

[ -d $mysql_path ] || mkdir -p $mysql_path

[ -d $backup_path ] || echo "mysql数据库备份目录[$backup_path]不存在，请确认参数是否正确！"

[ -d $backup_path ] || exit 1

function bk_mysqlbackup(){

  echo ""

  echo -e "\033[33m**************************自动配置mysql数据库备份脚本[$mysql_path/$script_name]**************************\033[0m"

  echo ""

  echo -e "\033[36m Usage: $0   \033[0m"

  echo ""



  [ -f $mysql_path/$script_name ] && echo "${mysql_path}已存在脚本[${script_name}],请检查相关配置！" && exit 1

  wget https://app.fslgz.com/portal/api/public/fs/association/file/downLoad?uploadId=784001405093478400 -O /opt/mysql_backup_template.sh

  mv /opt/mysql_backup_template.sh  $mysql_path/$script_name



  #处理windows传linux的脚本格式问题(注意空格位置不能多不能少)

  vi +':w ++ff=unix' +':q' ${mysql_path}/${script_name}



  sed  -i "s/localhost/${db_host}/g" $mysql_path/$script_name

  sed  -i "s/3306/${db_port}/g" $mysql_path/$script_name

  sed  -i "s/mysql_prod/${db_name}/g" $mysql_path/$script_name

  sed  -i "s/root/${db_user}/g" $mysql_path/$script_name

  sed  -i "s/password/${bk_db_pwd}/g" $mysql_path/$script_name

  sed  -i "s#\/data\/backup#${bk_backup_path}#g" $mysql_path/$script_name

  action "完成mysql备份脚本[$mysql_path/$script_name]编写！" /bin/true

  chmod u+x $mysql_path/$script_name



  #配置定时任务

  echo "30 11 * * * /bin/bash  ${mysql_path}/${script_name} " >> /var/spool/cron/root



  if [ $? -eq 0 ];then

    echo ""

    action "[$mysql_date]>>>完成数据库备份定时任务配置" /bin/true

  else

    echo ""

    action "[$mysql_date]>>>定时任务配置失败，请检查相关配置！" /bin/false

  fi



  echo ""

  echo  "|------------------------------------定时任务内容------------------------------------|"

  crontab -l

  echo ""

  echo  "|---------------mysql备份脚本[$mysql_path/$script_name]内容如下---------------|"

  cat  $mysql_path/$script_name

  echo -e "\033[33m************************************完成mysql数据库备份脚本配置*****************************************\033[0m"

  echo ""

}

bk_mysqlbackup