shell脚本：数据库的分库分表

#!/bin/bash
#########################
#File name:db_fen.sh
#Version:v1.0
#Email:[e-mail]
#Created time:2023-07-29 09:18:52
#Description:
########################## MySQL连接信息
db_user="root"
db_password="RedHat@123"
db_cmd="-u${db_user} -p${db_password}"
exclude_db="information_schema|mysql|performance_schema|sys|Database"
bak_dir=/backup/db/mysqldump_test/
# 判断备份路径是否存在
[ -d ${bak_dir} ] || mkdir ${bak_dir}# 查找出需要备份的数据库mysql ${db_cmd} -e"show databases" -N 2>/dev/null | egrep -v "$exclude_db" > dbtmp
# 循环遍历数据库列表
while read db
do#对数据库进行备份mysqldump ${db_cmd} --set-gtid-purged=off $db 2>/dev/null | gzip > ${bak_dir}/`date +%F`-$db.sql.gz#判断是否备份成功if [ $? -eq 0 ]thenecho "database $db is being backed up ... success!"elseecho "database $db is being backed up ... failure!"fi#根据数据库进行分表备份 [ -d ${bak_dir}/$db ] || mkdir -p ${bak_dir}/$db# 获取数据库中的表名列表mysql ${db_cmd}  $db -e "SHOW TABLES;" | grep -v "Tables_in" > tbtmp# 循环遍历表名列表while read tbdo# 对表进行备份mysqldump ${db_cmd} --set-gtid-purged=off $db $tb 2>/dev/null | gzip > ${bak_dir}/$db/`date +%F`-$db-$tb.sql.gz# 判断是否备份成功if [ "$?" -eq 0 ]; thenecho "Backup of $db.$tb successful!"elseecho "Backup of $db.$tb failed!"fidone < tbtmp
done < dbtmp
#删除临时文件
rm -rf tbtmp
rm -rf dbtmp