基于 SSL 实现MySQL主从复制

 #在MySQL5.7之后，安装完毕MySQL会在data目录下自动生成，这里模拟没有这些文件
 [root@mysql ~]# mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data        # 创建一个新的ssl文件

[root@mysql ~]# systemctl restart mysqld    # 重启服务
#查看mysql错误日志
[root@mysql ~]# tail -20 /usr/local/mysql/data/mysql.err 
#报错信息显示是不能获得私钥

#查询后发现没有r权限
[root@mysql ~]# ll  /usr/local/mysql/data/server-key.pem 
-rw------- 1 root root 1679 Jun 17 23:55 /usr/local/mysql/data/server-key.pem
[root@mysql ~]# chmod +r /usr/local/mysql/data/server-key.pem 
[root@mysql ~]# ll  /usr/local/mysql/data/server-key.pem 
-rw-r--r-- 1 root root 1679 Jun 17 23:55 /usr/local/mysql/data/server-key.pem
#重启服务
[root@mysql ~]# systemctl restart mysqld
#登录数据库查看是否支持ssl连接了
mysql> show variables like '%ssl%';
+---------------+-----------------+
| Variable_name | Value           |
+---------------+-----------------+
| have_openssl  | YES             |
| have_ssl      | YES             |
| ssl_ca        | ca.pem          |
| ssl_capath    |                 |
| ssl_cert      | server-cert.pem |
| ssl_cipher    |                 |
| ssl_crl       |                 |
| ssl_crlpath   |                 |
| ssl_key       | server-key.pem  |
+---------------+-----------------+
9 rows in set (0.01 sec)
#生成一个复制账号
mysql> grant replication slave on *.* to 'req'@'192.168.171.%' identified by '123' require ssl;

[root@mysql ~]# cat /etc/my.cnf          # 开启二进制日志
[mysqld]
log_bin=mysql-bin
server-id=1
[root@mysql ~]# systemctl restart mysqld      #重启服务
mysql> show master status ;           # 查看master当前状态
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000004 |      154 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

[root@mysql ~]# cat /etc/my.cnf     # 开启中继日志
[mysqld]
relay_log=relay-bin
relay_log_index=slave-relay-bin
server-id=2          # 注意server-id 要唯一
#主服务器操作，将证书给到从服务器
[root@mysql ~]# cd /usr/local/mysql/data/
[root@mysql data]# scp ca.pem client-cert.pem client-key.pem root@192.168.171.145:/usr/local/mysql/data/
#查看从主服务器上方复制过来的证书
[root@mysql data]# ll ca.pem client-cert.pem client-key.pem 
-rw-r--r-- 1 root root 1107 Jun 18 00:16 ca.pem
-rw-r--r-- 1 root root 1107 Jun 18 00:16 client-cert.pem
-rw------- 1 root root 1679 Jun 18 00:16 client-key.pem
#设置 client-key.pem 的 r 权限
[root@mysql data]# chmod +r client-key.pem 
[root@mysql data]# vim /etc/my.cnf       # 继续在my.cnf中写入
ssl-ca=/usr/local/mysql/data/ca.pem
ssl-cert=/usr/local/mysql/data/client-cert.pem
ssl-key=/usr/local/mysql/data/client-key.pem
[root@mysql data]# systemctl restart mysqld      # 重启服务

[root@mysql data]# mysql --ssl-ca=ca.pem --ssl-cert=client-cert.pem --ssl-key=client-key.pem -u bak -p123 -h 192.168.171.135

mysql> change master to master_host='192.168.171.135',master_user='bak',master_password='123',master_log_file='mysql-bin.000004',master_log_pos=766,master_ssl=1,master_ssl_ca='/usr/local/mysql/data/ca.pem',master_ssl_cert='/usr/local/mysql/data/client-cert.pem',master_ssl_key='/usr/local/mysql/data/client-key.pem';
mysql> start slave;
mysql> show slave status\G