目的：
192.168.100.20伺服器對192.168.100.10伺服器上的mysql資料庫進行備份。
[root@centos01 ~]# mysql -uroot -ppwd@123
mysql> create database liyanxin;
mysql> create database wangzhaojun;
mysql> create table liyanxin.liyanxin (姓名 char(6),性別 char(5),年齡 tinyint,** char(11));
query ok, 0 rows affected (0.01 sec)
mysql> insert into liyanxin.liyanxin values ('bob','男','18','11111111111');
query ok, 1 row affected (0.00 sec)
mysql> insert into liyanxin.liyanxin values ('tom','女','20','22222222222');
query ok, 1 row affected (0.00 sec)
mysql> select * from liyanxin.liyanxin;
+--------+--------+--------+-------------+
| 姓名 | 性別 | 年齡 | ** |
+--------+--------+--------+-------------+
| bob | 男 | 18 | 11111111111 |
| tom | 女 | 20 | 22222222222 |
+--------+--------+--------+-------------+
2 rows in set (0.00 sec)
mysql> create table wangzhaojun.wangzhaojun (姓名 char(6),性別 char(5),年齡 tinyint,** char(11));
query ok, 0 rows affected (0.01 sec)
mysql> insert into wangzhaojun.wangzhaojun values ('bob','男','18','11111111111');
query ok, 1 row affected (0.00 sec)
mysql> insert into wangzhaojun.wangzhaojun values ('tom','女','20','22222222222');
query ok, 1 row affected (0.00 sec)
mysql> select * from wangzhaojun.wangzhaojun;
+--------+--------+--------+-------------+
| 姓名 | 性別 | 年齡 | ** |
+--------+--------+--------+-------------+
| bob | 男 | 18 | 11111111111 |
| tom | 女 | 20 | 22222222222 |
+--------+--------+--------+-------------+
2 rows in set (0.00 sec)
mysql> grant select,lock tables on *.* to 'bob'@'192.168.100.%' identified by 'pwd@123';
query ok, 0 rows affected (0.00 sec)
[root@centos02 ~]# yum -y install mysql
[root@centos02 ~]# mysqldump -u bob -ppwd@123 -h 192.168.100.10 --databases liyanxin > liyanxin.sql
[root@centos02 ~]# ls
liyanxin.sql
[root@centos02 ~]# mkdir -p /opt/backup
[root@centos02 ~]# vim mysql.sh
#!/bin/bash
user="bob"
pass="pwd@123"
host="192.168.100.10"
conn="-u $user -p$pass -h $host"
data1="liyanxin"
data2="wangzhaojun"
bak="/opt/backup"
cmd="/usr/bin/mysqldump"
time=`date +%y-%m-%d-%h-%m`
name_1="$data1-$time"
name_2="$data2-$time"
cd $bak
$cmd $conn --databases $data1 > $name_1.sql
$cmd $conn --databases $data2 > $name_2.sql
/bin/tar zcf $name_1.tar.gz $name_1.sql --remove > /dev/null
/bin/tar zcf $name_2.tar.gz $name_2.sql --remove > /dev/null
[root@centos02 ~]# ./mysql.sh
[root@centos02 ~]# cd /opt/backup/
[root@centos02 backup]# ls
liyanxin-2020-05-20-02-10.tar.gz wangzhaojun-2020-05-20-02-10.tar.gz
[root@centos02 ~]# mv mysql.sh /opt/backup/
[root@centos02 ~]# crontab -e
*/5 * * * * /opt/backup/mysql.sh
[root@centos02 ~]# systemctl status crond
● crond.service - command scheduler
loaded: loaded (/usr/lib/systemd/system/crond.service; enabled; vendor preset: enabled)
active: active (running) since 三 2020-05-20 01:20:56 cst; 37min ago
main pid: 829 (crond)
cgroup: /system.slice/crond.service
└─829 /usr/sbin/crond -n
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