shell脚本实现mysql数据库双机定时备份的方法

#!/bin/bash
CURRENT_DIR=`pwd`

function install_expect()
{
    echo "install start..."
    cp expect-5.45.0.tar.gz tcl8.4.11-src.tar.gz /usr/
    cd /usr/
    tar -zxvf expect-5.45.0.tar.gz
    tar -zxvf tcl8.4.11-src.tar.gz
    cd tcl8.4.11/unix
    ./configure --prefix=/usr/tcl --enable-shared
    make -j8
    make install
    cp tclUnixPort.h ../generic/
    
    cd ../../expect-5.45
    ./configure --prefix=/usr/expect --with-tcl=/usr/tcl/lib --with-tclinclude=../tcl8.4.11/generic
    make -j8
    make install
    ln -s /usr/expect/bin/expect /usr/tcl/bin/expect
    ln -s /usr/expect/bin/expect /usr/bin/expect
    cd ..
    rm -rf expect-5.45.0.tar.gz tcl8.4.11-src.tar.gz
    cd $CURRENT_DIR
    echo "install finished..."
    
}
install_expect

mysqldump -u数据库用户名 -p数据库密码 需要导出的数据库名称 > /mnt/data/mysql_backup/导出后的sql脚本名称.sql

scp -P ssh端口号 /mnt/data/mysql_backup/导出后的sql脚本名称.sql 另一台机器的用户名比如root@另一台机器IP:/mnt/data/mysql_backup/

#数据库备份
docker exec -u root mysql bash -c 'rm -rf /usr/local/pm/* && mysqldump -u用户名 -p密码 数据库名 > /usr/local/pm/pm_yantai_$(date "+%Y-%m-%d").sql'
#sql拷贝出来
docker cp mysql:/usr/local/pm/pm_yantai_$(date "+%Y-%m-%d").sql 
#跨机器拷贝
scp -P ssh端口号 /mnt/data/mysql_backup/导出后的sql脚本名称.sql 另一台机器的用户名比如root@另一台机器IP:/mnt/data/mysql_backup/

#!/bin/bash
#导出sql脚本
echo $(date "+%Y-%m-%d") backup start
echo mysql backup start
mysqldump -u数据库用户名 -p数据库密码 pm_prod2.0 > /mnt/data/mysql_backup/pm_shandong_$(date "+%Y-%m-%d").sql
echo mysql backup finish
#scp跨机器备份
echo sql scp start
/usr/bin/expect <<-EOF
set timeout -1;
spawn scp -P ssh端口号 /mnt/data/mysql_backup/pm_shandong_$(date "+%Y-%m-%d").sql 另一台机器用户名@另一台机器IP:/mnt/data/mysql_backup/
expect {
    "*password:" {send "另一台机器密码\r";exp_continue;}
    "yes/no" {send "yes\r";}
}
EOF
#删除过期sql
echo remove file /mnt/data/mysql_backup/pm_shandong_$(date -d "7 day ago" +%Y-%m-%d).sql
rm -rf /mnt/data/mysql_backup/pm_shandong_$(date -d "7 day ago" +%Y-%m-%d).sql
echo finish! The file is pm_shandong_$(date "+%Y-%m-%d").sql

#!/bin/bash
echo $(date "+%Y-%m-%d") backup start
echo mysql docker backup start
docker exec -u root mysql bash -c 'rm -rf /usr/local/pm/* && mysqldump -u用户名 -p密码 数据库名 > /usr/local/pm/pm_yantai_$(date "+%Y-%m-%d").sql'
echo mysql docker backup finish
echo sql copy start
docker cp mysql:/usr/local/pm/pm_yantai_$(date "+%Y-%m-%d").sql /usr/local/sdyy/pm/mysql_backup/pm_yantai_$(date "+%Y-%m-%d").sql
echo sql scp start
/usr/bin/expect <<-EOF
set timeout -1;
spawn scp -P ssh端口号 /usr/local/sdyy/pm/mysql_backup/pm_yantai_$(date "+%Y-%m-%d").sql 另一台机器用户名@另一台机器IP:/usr/local/sdyy/pm/mysql_backup/
expect {
    "*password:" {send "另一台机器登录密码\r";exp_continue;}
    "yes/no" {send "yes\r";}
}
EOF
echo remove file /usr/local/sdyy/pm/mysql_backup/pm_yantai_$(date -d "15 day ago" +%Y-%m-%d).sql
rm -rf /usr/local/sdyy/pm/mysql_backup/pm_yantai_$(date -d "15 day ago" +%Y-%m-%d).sql
echo finish! The file is pm_yantai_$(date "+%Y-%m-%d").sql

sh mysql_backup.sh

crontab -e

0 3 * * * /mnt/data/mysql_backup/mysql_backup.sh >> /mnt/data/mysql_backup/backup.log

crontab -l

chmod +x /mnt/data/mysql_backup/mysql_backup.sh