mysql备份脚本

#!/bin/bash
#auto backup mysql DB
#by author ale
#2019年4月29日12:17:23
################

#Define Variable
BAK_DIR=/data/backup/$(date +%F)
SQL_USR="backup"
SQL_PWD="123456"
SQL_DB="$*"
SQL_HOST="localhost"
SQL_CMD="/usr/bin/mysqldump"
if [ $# -eq 0 ];then
    echo -e "\033[32m----------------\033[0m"
    echo -e "\033[32mUsage:{/bin/bash $0 discuz|zabbix|all|help}\033[0m"
    exit 1
fi

if [ "$SQL_DB" == "help" ];then
    echo -e "\033[32m----------------\033[0m"
    echo -e "\033[32mUsage:{/bin/bash $0 discuz|zabbix|all|help}\033[0m"
    exit 1
fi

if [ ! -d $BAK_DIR ];then
    mkdir -p $BAK_DIR
fi

for SQL_DB in $SQL_DB
do
mysql -h$SQL_HOST -u$SQL_USR -p$SQL_PWD -e "show databases"|grep "$SQL_DB"
if [ $? -eq 0 ];then
    $SQL_CMD -h$SQL_HOST -u$SQL_USR -p$SQL_PWD $SQL_DB>$BAK_DIR/${SQL_DB}.sql
    if [ $? -eq 0 ];then
        echo -e "\033[32mThe Mysql DB ${SQL_DB} Backup success.\033[0m"
        echo -e "\033[32mls -l $BAK_DIR/${SQL_DB}.sql\033[0m"
        ls -l $BAK_DIR/${SQL_DB}.sql
    else
        echo -e "\033[32m--------------------\033[0m"
        echo -e "\033[32mThis Mysql DB ${SQL_DB} Backup Failed.Please check\033[0m"
        exit 1
    fi
else
    if [ $SQL_DB == "all" ];then
        $SQL_CMD -h$SQL_HOST -u$SQL_USR -p$SQL_PWD --all-databases>$BAK_DIR/${SQL_DB}.sql
        if [ $? -eq 0 ];then
            echo -e "\033[32mThe Mysql DB ${SQL_DB} Backup success.\033[0m"
            echo -e "\033[32mls -l $BAK_DIR/${SQL_DB}.sql\033[0m"
            ls -l $BAK_DIR/${SQL_DB}.sql
            exit 0
        else
            echo -e "\033[32m--------------------\033[0m"
            echo -e "\033[32mThis Mysql DB ${SQL_DB} Backup Failed.Please check\033[0m"
            exit 1
        fi
    fi
    echo -e "\033[32m-----------------\033[0m"
    echo -e "\033[32mThe MySQL DB ${SQL_DB} Unknown,Backup Failed Please check.\033[0m"
    exit 1 
fi
done