rsyslog实现将日志存储到mysql中

​ 前提：准备好msql server或mariadb server；

​ 1、安装rsyslog连接至mysql server的驱动模块；

[13:24 root@centos6.8~]# yum install -y rsyslog-mysql 
[13:24 root@centos6.8~]# rpm -ql rsyslog-mysql
/lib64/rsyslog/ommysql.so
/usr/share/doc/rsyslog-mysql-5.8.10
/usr/share/doc/rsyslog-mysql-5.8.10/createDB.sql

可以看到其实rsyslog模块提供的启动mysql的模块还有createDB.sql，它的作用就是定义了日志的记录表格式，可以直接导入该sql语句到mysql即可

新建rsyslog的mysql用户

CREATE USER 'rsyslog'@'localhost' IDENTIFIED BY 'password';

授权数据库

GRANT ALL PRIVILEGES ON Syslog.* TO 'rsyslog'@'localhost';

刷新权限：运行以下命令以使权限更改立即生效：

FLUSH PRIVILEGES;

​ 2、在mysql server准备rsyslog专用的用户账号；

mysql>GRANT ALL ON Syslog.* TO 'rsyslog'@'127.0.0.1' IDENTIFIED BY 'rsyslogpass';
mysql>GRANT ALL ON Syslog.* TO 'rsyslog'@'local' IDENTIFIED BY 'rsyslogpass';
mysql> FLUSH PRIVILEGES;

​ 3、导入该sql语句到mysql即可，生成所需要的数据库和表；

[13:24 root@centos6.8~]# mysql -ursyslog -h127.0.0.1 -p123456 <  /usr/share/doc/rsyslog-mysql-5.8.10/createDB.sql
mysql> USE Syslog
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
mysql> SHOW TABLES;
+------------------------+
| Tables_in_Syslog       |
+------------------------+
| SystemEvents           |
| SystemEventsProperties |
+------------------------+
2 rows in set (0.00 sec)
mysql> DESC SystemEvents
    -> ;
+--------------------+------------------+------+-----+---------+----------------+
| Field              | Type             | Null | Key | Default | Extra          |
+--------------------+------------------+------+-----+---------+----------------+
| ID                 | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| CustomerID         | bigint(20)       | YES  |     | NULL    |                |
| ReceivedAt         | datetime         | YES  |     | NULL    |                |
| DeviceReportedTime | datetime         | YES  |     | NULL    |                |
| Facility           | smallint(6)      | YES  |     | NULL    |                |
| Priority           | smallint(6)      | YES  |     | NULL    |                |
| FromHost           | varchar(60)      | YES  |     | NULL    |                |
| Message            | text             | YES  |     | NULL    |                |
| NTSeverity         | int(11)          | YES  |     | NULL    |                |
| Importance         | int(11)          | YES  |     | NULL    |                |
| EventSource        | varchar(60)      | YES  |     | NULL    |                |
| EventUser          | varchar(60)      | YES  |     | NULL    |                |
| EventCategory      | int(11)          | YES  |     | NULL    |                |
| EventID            | int(11)          | YES  |     | NULL    |                |
| EventBinaryData    | text             | YES  |     | NULL    |                |
| MaxAvailable       | int(11)          | YES  |     | NULL    |                |
| CurrUsage          | int(11)          | YES  |     | NULL    |                |
| MinUsage           | int(11)          | YES  |     | NULL    |                |
| MaxUsage           | int(11)          | YES  |     | NULL    |                |
| InfoUnitID         | int(11)          | YES  |     | NULL    |                |
| SysLogTag          | varchar(60)      | YES  |     | NULL    |                |
| EventLogType       | varchar(60)      | YES  |     | NULL    |                |
| GenericFileName    | varchar(60)      | YES  |     | NULL    |                |
| SystemID           | int(11)          | YES  |     | NULL    |                |
+--------------------+------------------+------+-----+---------+----------------+
24 rows in set (0.00 sec)

​ 4、配置rsyslog加载ommysql模块

#### MODULES ####
......
$ModLoad ommysql

​ 5、配置RULES，将所期望的日志信息记录于mysql中；

​ 其格式为：

​ facility.priority :ommysql:DBHOST,DB,DBUSER,DBUSERPASS

检查数据库连接信息：确保数据库连接信息正确。在你的配置中，你正在将日志发送到MySQL服务器的127.0.0.1，数据库名为Syslog，用户名为rsyslog，密码为123456。请确保这些信息与你的实际MySQL配置匹配。

配置规则：在*.*:ommysql这部分，*.*表示将所有日志消息都发送到MySQL。你可以根据需要更改这部分以匹配特定的日志规则。

​ 所以添加以下信息：

*.* 
:ommysql:127.0.0.1,Syslog,rsyslog,123456

​ 6、启动mysql服务，并重启rsyslog服务，mysql已经记录日志，到此为止，日志信息已经成功的存储于数据库中；

systemctl restart mariadb && systemctl restart rsyslog

mysql>USE Syslog
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
    
mysql> SELECT * FROM SystemEvents\G
*************************** 1. row ***************************
                ID: 1
        CustomerID: NULL
        ReceivedAt: 2016-10-16 13:35:46
DeviceReportedTime: 2016-10-16 13:35:46
          Facility: 0
          Priority: 6
          FromHost: centos6
           Message: imklog 5.8.10, log source = /proc/kmsg started.
        NTSeverity: NULL
        Importance: NULL
       EventSource: NULL
         EventUser: NULL
     EventCategory: NULL
           EventID: NULL
   EventBinaryData: NULL
      MaxAvailable: NULL
         CurrUsage: NULL
          MinUsage: NULL
          MaxUsage: NULL
        InfoUnitID: 1
         SysLogTag: kernel:
      EventLogType: NULL
   GenericFileName: NULL
          SystemID: NULL
*************************** 2. row ***************************
                ID: 2
        CustomerID: NULL
        ReceivedAt: 2016-10-16 13:35:46
DeviceReportedTime: 2016-10-16 13:35:46
          Facility: 5
          Priority: 6
          FromHost: centos6
           Message:  [origin software="rsyslogd" swVersion="5.8.10" x-pid="3081" x-info="http://www.rsyslog.com"] start
        NTSeverity: NULL
        Importance: NULL
       EventSource: NULL
         EventUser: NULL
     EventCategory: NULL
           EventID: NULL
   EventBinaryData: NULL
      MaxAvailable: NULL
         CurrUsage: NULL
          MinUsage: NULL
          MaxUsage: NULL
        InfoUnitID: 1
         SysLogTag: rsyslogd:
      EventLogType: NULL
   GenericFileName: NULL
          SystemID: NULL
*************************** 3. row ***************************
                ID: 3
        CustomerID: NULL
        ReceivedAt: 2016-10-16 13:35:50
DeviceReportedTime: 2016-10-18 10:48:37
          Facility: 18
          Priority: 6
          FromHost: localhost
           Message:  nidhai
        NTSeverity: NULL
        Importance: NULL
       EventSource: NULL
         EventUser: NULL
     EventCategory: NULL
           EventID: NULL
   EventBinaryData: NULL
      MaxAvailable: NULL
         CurrUsage: NULL
          MinUsage: NULL
          MaxUsage: NULL
        InfoUnitID: 1
         SysLogTag: root:
      EventLogType: NULL
   GenericFileName: NULL
          SystemID: NULL
*************************** 4. row ***************************
                ID: 4
        CustomerID: NULL
        ReceivedAt: 2016-10-16 13:35:52
DeviceReportedTime: 2016-10-18 10:48:39
          Facility: 18
          Priority: 6
          FromHost: localhost
           Message:  D
        NTSeverity: NULL
        Importance: NULL
       EventSource: NULL
         EventUser: NULL
     EventCategory: NULL
           EventID: NULL
   EventBinaryData: NULL
      MaxAvailable: NULL
         CurrUsage: NULL
          MinUsage: NULL
          MaxUsage: NULL
        InfoUnitID: 1
         SysLogTag: root:
      EventLogType: NULL
   GenericFileName: NULL
          SystemID: NULL
4 rows in set (0.00 sec)