数据对于大部分公司来说都是最重要的部分，而MySQL的服务器在同步数据时，默认是使用明文进行传输，所以接下来就来说说MySQL基于SSL协议进行密文传输数据的主从复制模式。

逻辑拓扑：

接下来的实验中Master节点服务器即使Master节点数据库服务器，同时也是CA。

环境准备：

一、主从服务器时间需要同步：

[root@node9 ~]# chronyc sources

210 Number of sources = 1

MS Name/IP address         Stratum Poll Reach LastRx Last sample

===============================================================================

^* server.magelinux.com          3   7   377    82    +71us[ +148us] +/-  100ms

[root@node10 ~]# chronyc  sources

210 Number of sources = 1

MS Name/IP address         Stratum Poll Reach LastRx Last sample

===============================================================================

^* server.magelinux.com          3   7   377    95   +116us[ +155us] +/-  100ms

二、主节点node9搭建好CA环境：

[root@node9 ~]# cd /etc/pki/CA

[root@node9 CA]# touch index.txt serial

[root@node9 CA]# echo 01 > serial

[root@node9 CA]# (umask 077;openssl genrsa -out cakey.pem 2048)

[root@node9 CA]# openssl req -new -x509 -key private/cakey.pem -out cacert.pem -days 3650

You are about to be asked to enter information that will be incorporated

into your certificate request.

What you are about to enter is what is called a Distinguished Name or a DN.

There are quite a few fields but you can leave some blank

For some fields there will be a default value,

If you enter '.', the field will be left blank.

-----

Country Name (2 letter code) [XX]:CN

State or Province Name (full name) []:BeiJing

Locality Name (eg, city) [Default City]:BeiJing

Organization Name (eg, company) [Default Company Ltd]:hisen

Organizational Unit Name (eg, section) []:Ops

Common Name (eg, your name or your server's hostname) []:ca.hisen.com

Email Address []:admin.com

三、主节点node9生成证书申请，并由CA进行签署：

[root@node9 ~]# cd /var/lib/mysql/ssl/

[root@node9 ssl]# (umask 077;openssl genrsa -out master.key 2048)

[root@node9 ssl]# openssl req -new -key master.key -out master.csr -days 3650

You are about to be asked to enter information that will be incorporated

into your certificate request.

What you are about to enter is what is called a Distinguished Name or a DN.

There are quite a few fields but you can leave some blank

For some fields there will be a default value,

If you enter '.', the field will be left blank.

-----

Country Name (2 letter code) [XX]:CN

State or Province Name (full name) []:BeiJing

Locality Name (eg, city) [Default City]:BeiJing

Organization Name (eg, company) [Default Company Ltd]:hisen

Organizational Unit Name (eg, section) []:Ops

Common Name (eg, your name or your server's hostname) []:master.hisen.com

Email Address []:master.com

Please enter the following 'extra' attributes

to be sent with your certificate request

A challenge password []:

An optional company name []:

[root@node9 ssl]# openssl ca -in master.csr -out master.crt -days 2048

Using configuration from /etc/pki/tls/openssl.cnf

Check that the request matches the signature

Signature ok

Certificate Details:

Serial Number: 1 (0x1)

Validity

Not Before: Feb 22 11:21:11 2017 GMT

Not After : Oct  2 11:21:11 2022 GMT

Subject:

countryName               = CN

stateOrProvinceName       = BeiJing

organizationName          = hisen

organizationalUnitName    = Ops

commonName                = master.hisen.com

emailAddress              = master.com

X509v3 extensions:

X509v3 Basic Constraints:

CA:FALSE

Netscape Comment:

OpenSSL Generated Certificate

X509v3 Subject Key Identifier:

2B:1D:F7:18:00:89:1B:CB:6D:09:59:4B:5E:03:78:BA:60:6A:62:BB

X509v3 Authority Key Identifier:

keyid:C4:30:C5:87:EB:80:6C:87:AE:60:71:FC:E9:79:1F:5A:31:57:5B:88

Certificate is to be certified until Oct  2 11:21:11 2022 GMT (2048 days)

Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y

Write out database with 1 new entries

Data Base Updated

四、从节点node10生成证书，并由CA进行签署：

[root@node10 ~]# cd /var/lib/mysql/ssl

[root@node10 ssl]# (umask 077;openssl genrsa -out slave.key 2048)

Generating RSA private key, 2048 bit long modulus

..+++

...........................................................+++

e is 65537 (0x10001)

[root@node10 ssl]# (umask 077;openssl genrsa -out slave.key 2048)

Generating RSA private key, 2048 bit long modulus

..+++

...........................................................+++

e is 65537 (0x10001)

[root@node10 ssl]# openssl req -new -key slave.key -out slave.csr -days 3650

You are about to be asked to enter information that will be incorporated

into your certificate request.

What you are about to enter is what is called a Distinguished Name or a DN.

There are quite a few fields but you can leave some blank

For some fields there will be a default value,

If you enter '.', the field will be left blank.

-----

Country Name (2 letter code) [XX]:CN

State or Province Name (full name) []:BeiJing

Locality Name (eg, city) [Default City]:BeiJing

Organization Name (eg, company) [Default Company Ltd]:hisen

Organizational Unit Name (eg, section) []:Ops

Common Name (eg, your name or your server's hostname) []:slave.hisen.com

Email Address []:slave.com

Please enter the following 'extra' attributes

to be sent with your certificate request

A challenge password []:

An optional company name []:

[root@node10 ssl]# scp slave.csr 192.168.17.90:/root

[root@node9 ~]# openssl ca -in slave.csr -out slave.crt -days 3650

Using configuration from /etc/pki/tls/openssl.cnf

Check that the request matches the signature

Signature ok

Certificate Details:

Serial Number: 2 (0x2)

Validity

Not Before: Feb 22 11:27:17 2017 GMT

Not After : Feb 20 11:27:17 2027 GMT

Subject:

countryName               = CN

stateOrProvinceName       = BeiJing

organizationName          = hisen

organizationalUnitName    = Ops

commonName                = slave.hisen.com

emailAddress              = slave.com

X509v3 extensions:

X509v3 Basic Constraints:

CA:FALSE

Netscape Comment:

OpenSSL Generated Certificate

X509v3 Subject Key Identifier:

68:31:D7:B1:03:5A:C0:6E:A3:58:4D:67:53:AC:F7:F5:1E:2A:19:4E

X509v3 Authority Key Identifier:

keyid:C4:30:C5:87:EB:80:6C:87:AE:60:71:FC:E9:79:1F:5A:31:57:5B:88

Certificate is to be certified until Feb 20 11:27:17 2027 GMT (3650 days)

Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y

Write out database with 1 new entries

Data Base Updated

[root@node9 ~]# scp slave.crt 192.168.17.100:/var/lib/mysql/ssl/

五、将node9的CA证书复制给Master和Slave各一份：

[root@node9 ~]# cp /etc/pki/CA/cacert.pem /var/lib/mysql/ssl/    #复制CA证书到本地

[root@node9 ~]# scp /etc/pki/CA/cacert.pem 192.168.17.100:/var/lib/mysql/ssl/   #复制CA到node10

六、修改/var/lib/mysql/ssl/下文件的属主属组以及给予最小权限：

[root@node9 ~]# chown -R mysql:mysql /var/lib/mysql/ssl/ ; chmod 600 /var/lib/mysql/ssl/*

[root@node10 ~]# chown -R mysql:mysql /var/lib/mysql/ssl/ ; chmod 600 /var/lib/mysql/ssl/*

MySQL文件配置：

Master：

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

symbolic-links=0

skip_name_resolve=ON

innodb_file_per_table=1

server_id=2

log-bin=master-log

ssl                                    #开启SSL

ssl_ca=/var/lib/mysql/ssl/cacert.pem       #Master节点CA证书存放位置

ssl_cert=/var/lib/mysql/ssl/master.crt   #Master节点证书

ssl_key=/var/lib/mysql/ssl/master.key     #Master节点key

Slave：

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

symbolic-links=0

skip_name_resolve=ON

innodb_file_per_table=ON

server_id=3

relay-log=relay-log

read-only=1

ssl                                    #开启SSL

ssl_ca=/var/lib/mysql/ssl/cacert.pem    #Slave节点CA证书存放位置

ssl_cert=/var/lib/mysql/ssl/slave.crt  #Slave节点证书

ssl_key=/var/lib/mysql/ssl/slave.key    #Slave节点key

MySQL服务配置：

一、启动MySQL服务，并查看MySQL中SSL信息：

[root@node9 ~]# systemctl start mariadb.service   #启动node9的MySQL服务

MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE '%ssl%';  #查看node9的SSL信息

+---------------+-------------------------------+

| Variable_name | Value                         |

+---------------+-------------------------------+

| have_openssl  | YES                           |

| have_ssl      | YES                           |

| ssl_ca        | /var/lib/mysql/ssl/cacert.pem |

| ssl_capath    |                               |

| ssl_cert      | /var/lib/mysql/ssl/master.crt |

| ssl_cipher    |                               |

| ssl_key       | /var/lib/mysql/ssl/master.key |

+---------------+-------------------------------+

7 rows in set (0.01 sec)

[root@node10 ssl]# systemctl start mariadb.service  #启动node10的MySQL服务

MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE '%ssl%';  #查看node10的SSL信息

+---------------+-------------------------------+

| Variable_name | Value                         |

+---------------+-------------------------------+

| have_openssl  | YES                           |

| have_ssl      | YES                           |

| ssl_ca        | /var/lib/mysql/ssl/cacert.pem |

| ssl_capath    |                               |

| ssl_cert      | /var/lib/mysql/ssl/slave.crt  |

| ssl_cipher    |                               |

| ssl_key       | /var/lib/mysql/ssl/slave.key  |

+---------------+-------------------------------+

7 rows in set (0.00 sec)

二、Master节点授权一个能用于SSL协议进行复制信息的用户，并测试用户：

MariaDB [(none)]> GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO 'userssl'@'192.168.17.%' IDENTIFIED BY 'passwordssl' REQUIRE SSL;

Query OK, 0 rows affected (0.00 sec)   #授权一个仅能够通过SSL复制数据的用户

MariaDB [(none)]> FLUSH PRIVILEGES;     #刷新权限

Query OK, 0 rows affected (0.00 sec)

[root@node9 ~]# mysql -uuserssl -ppasswordssl -h192.168.17.90 \

> --ssl_ca=/var/lib/mysql/ssl/cacert.pem \

> --ssl_cert=/var/lib/mysql/ssl/master.crt \

> --ssl_key=/var/lib/mysql/ssl/master.key              #测试用户能否使用SSL协议登录

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 4

Server version: 5.5.44-MariaDB-log MariaDB Server

Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>

三、配置Slave节点，指向Master节点：

Master节点当前正在使用的binlog文件：master-log.000004，以及binlog位置：512

MariaDB [(none)]> SHOW MASTER STATUS;

+-------------------+----------+--------------+------------------+

| File              | Position | Binlog_Do_DB | Binlog_Ignore_DB |

+-------------------+----------+--------------+------------------+

| master-log.000004 |      512 |              |                  |

+-------------------+----------+--------------+------------------+

1 row in set (0.00 sec)

Slave节点配置：

MariaDB [(none)]> CHANGE MASTER TO

-> MASTER_HOST='192.168.17.90',

-> MASTER_USER='userssl',

-> MASTER_PASSWORD='passwordssl',

-> MASTER_LOG_FILE='master-log.000004',

-> MASTER_LOG_POS=512,

-> MASTER_SSL=1,

-> MASTER_SSL_CA='/var/lib/mysql/ssl/cacert.pem',

-> MASTER_SSL_CERT='/var/lib/mysql/ssl/slave.crt',

-> MASTER_SSL_KEY='/var/lib/mysql/ssl/slave.key';

Query OK, 0 rows affected (0.01 sec)

MariaDB [(none)]> START SLAVE;   启动SLAVE功能

Query OK, 0 rows affected (0.01 sec)

MariaDB [(none)]> SHOW SLAVE STATUS\G;  查看SLAVE状态信息

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.17.90

Master_User: userssl

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: master-log.000004

Read_Master_Log_Pos: 512

Relay_Log_File: relay-log.000002

Relay_Log_Pos: 530

Relay_Master_Log_File: master-log.000004

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno: 0

Last_Error:

Skip_Counter: 0

Exec_Master_Log_Pos: 512

Relay_Log_Space: 818

Until_Condition: None

Until_Log_File:

Until_Log_Pos: 0

Master_SSL_Allowed: Yes

Master_SSL_CA_File: /var/lib/mysql/ssl/cacert.pem

Master_SSL_CA_Path:

Master_SSL_Cert: /var/lib/mysql/ssl/slave.crt

Master_SSL_Cipher:

Master_SSL_Key: /var/lib/mysql/ssl/slave.key

Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 2

1 row in set (0.00 sec)

四、测试主从同步数据：

Master节点：

MariaDB [(none)]> CREATE DATABASE hisendb;  node9主节点创建hisendb数据库

Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> USE hisendb;

Database changed

MariaDB [hisendb]> CREATE TABLE friends(id INT UNSIGNED PRIMARY KEY NOT NULL,Name VARCHAR(20) NOT NULL,Age TINYINT,Gender ENUM('F','M'));

Query OK, 0 rows affected (0.01 sec)    #在hisendb数据库中创建friends表

MariaDB [hisendb]> INSERT INTO friends VALUES (1,'Xu He',25,'M'),(2,'Xu Mingying',27,'F'),(3,'Tian Tao',26,'M'),(4,'LiangJuntao',28,'M');

Query OK, 4 rows affected (0.00 sec)   #在friends表中插入数据

Records: 4  Duplicates: 0  Warnings: 0

MariaDB [hisendb]> SELECT * FROM friends;   #查看结果

+----+--------------+------+--------+

| id | Name         | Age  | Gender |

+----+--------------+------+--------+

|  1 | Xu He        |   25 | M      |

|  2 | Xu Mingying  |   27 | F      |

|  3 | Tian Tao     |   26 | M      |

|  4 | Liang Juntao |   28 | M      |

+----+--------------+------+--------+

4 rows in set (0.00 sec)

Slave节点：

MariaDB [(none)]> USE hisendb;

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

MariaDB [hisendb]> SELECT * FROM friends;  #在从节点可以查看主节点写入的数据

+----+--------------+------+--------+

| id | Name         | Age  | Gender |

+----+--------------+------+--------+

|  1 | Xu He        |   25 | M      |

|  2 | Xu Mingying  |   27 | F      |

|  3 | Tian Tao     |   26 | M      |

|  4 | Liang Juntao |   28 | M      |

+----+--------------+------+--------+

4 rows in set (0.00 sec)

由上可知，主从已经完成基于SSL协议的数据复制。