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+#!/bin/bash
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+# mysql_backup.sh: backup mysql databases and keep newest 5 days backup.
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+#
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+# ${db_user} is mysql username
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+# ${db_password} is mysql password
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+# ${db_host} is mysql host
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+# —————————–
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+#/root/mysql_backup.sh
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+# everyday 3:00 AM execute database backup
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+# 0 3 * * * /root/mysql_backup.sh
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+#/etc/cron.daily
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+
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+# MySQL 客户端程序路径
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+mysql="/usr/mysql/mysql-5.7/bin/mysql"
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+
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+db_user="root"
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+db_password="PA55W0RD"
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+db_host="localhost"
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+# the directory for story your backup file. #
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+backup_dir="/home/backup/mysql/"
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+# 要备份的数据库名 #
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+#all_db="$(${mysql} -u ${db_user} -h ${db_host} -p${db_password} -Bse 'show databases')" #
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+all_db="$(${mysql} -u ${db_user} -h ${db_host} -p${db_password} -Bse 'SHOW DATABASES' )"
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+
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+# 要保留的备份天数 #
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+backup_day=10
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+
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+#数据库备份日志文件存储的路径
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+logfile="/var/log/mysql_backup.log"
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+
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+###ssh端口号###
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+ssh_port=22
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+###定义ssh auto key的文件###
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+id_rsa=/root/.ssh/id_rsa
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+###定义ssh auto username###
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+id_rsa_user=root
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+###定义要同步的远程服务器的目录路径（必须是绝对路径）###
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+clientPath="/home/backup/mysql"
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+###定义要镜像的本地文件目录路径 源服务器（必须是绝对路径）###
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+serverPath=${backup_dir}
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+###定义生产环境的ip###
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+web_ip="47.107.28.221"
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+
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+# date format for backup file (dd-mm-yyyy) #
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+time="$(date +"%Y-%m-%d")"
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+
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+# mysql, ${mysqldump} and some other bin's path #
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+mysqldump="/usr/mysql/mysql-5.7/bin/mysqldump"
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+
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+# the directory for story the newest backup #
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+test ! -d ${backup_dir} && mkdir -p ${backup_dir}
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+
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+#备份数据库函数#
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+mysql_backup()
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+{
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+ # 取所有的数据库名 #
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+ for db in ${all_db}
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+ do
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+ backname=${db}.${time}
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+ dumpfile=${backup_dir}${backname}
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+
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+ #将备份的时间、数据库名存入日志
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+ echo "------"$(date +'%Y-%m-%d %T')" Beginning database "${db}" backup--------" >>${logfile}
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+ ${mysqldump} -F -u${db_user} -h${db_host} -p${db_password} ${db} > ${dumpfile}.sql 2>>${logfile} 2>&1
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+
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+ #开始将压缩数据日志写入log
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+ echo $(date +'%Y-%m-%d %T')" Beginning zip ${dumpfile}.sql" >>${logfile}
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+ #将备份数据库文件库压成ZIP文件，并删除先前的SQL文件. #
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+ tar -czvf ${backname}.tar.gz ${backname}.sql 2>&1 && rm ${dumpfile}.sql 2>>${logfile} 2>&1
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+
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+ #将压缩后的文件名存入日志。
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+ echo "backup file name:"${dumpfile}".tar.gz" >>${logfile}
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+ echo -e "-------"$(date +'%Y-%m-%d %T')" Ending database "${db}" backup-------\n" >>${logfile}
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+ done
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+}
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+
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+delete_old_backup()
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+{
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+ echo "delete backup file:" >>${logfile}
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+ # 删除旧的备份 查找出当前目录下七天前生成的文件，并将之删除
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+ find ${backup_dir} -type f -mtime +${backup_day} | tee delete_list.log | xargs rm -rf
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+ cat delete_list.log >>${logfile}
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+}
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+
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+rsync_mysql_backup()
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+{
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+ # rsync 同步到其他Server中 #
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+ for j in ${web_ip}
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+ do
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+ echo "mysql_backup_rsync to ${j} begin at "$(date +'%Y-%m-%d %T') >>${logfile}
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+ ### 同步 ###
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+ rsync -avz --progress --delete $serverPath -e "ssh -p "${ssh_port}" -i "${id_rsa} ${id_rsa_user}@${j}:$clientPath >>${logfile} 2>&1
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+ echo "mysql_backup_rsync to ${j} done at "$(date +'%Y-%m-%d %T') >>${logfile}
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+ done
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+}
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+
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+#进入数据库备份文件目录
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+cd ${backup_dir}
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+
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+mysql_backup
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+delete_old_backup
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+rsync_mysql_backup
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+
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+echo -e "========================mysql backup && rsync done at "$(date +'%Y-%m-%d %T')"============================\n\n">>${logfile}
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+cat ${logfile}
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Yangzw