MysSQLMariaDB用trigger调用shell
Windows环境下:
DROP FUNCTION IF EXISTS lib_mysqludf_sys_info;
DROP FUNCTION IF EXISTS sys_get;
DROP FUNCTION IF EXISTS sys_set;
DROP FUNCTION IF EXISTS sys_exec;
DROP FUNCTION IF EXISTS sys_eval;
CREATE FUNCTION lib_mysqludf_sys_info RETURNS string SONAME 'lib_mysqludf_sys.dll';
CREATE FUNCTION sys_get RETURNS string SONAME 'lib_mysqludf_sys.dll';
CREATE FUNCTION sys_set RETURNS int SONAME 'lib_mysqludf_sys.dll';
CREATE FUNCTION sys_exec RETURNS int SONAME 'lib_mysqludf_sys.dll';
CREATE FUNCTION sys_eval RETURNS string SONAME 'lib_mysqludf_sys.dll';
select sys_eval('ipconfig');
Linux环境下:
在mysql的触发器中执行一个外部程序。
步骤如下:
一、解压附件的压缩包之后
如果不想自己编译的话,,把lib_mysqludf_sys.so文件放到 mysql的lib/mysql/plugin/
目录下。
二、执行chcon -t texrel_shlib_t mysql/lib/mysql/plugin/lib_mysqludf_sys.so
三、创建函数
DROP FUNCTION IF EXISTS lib_mysqludf_sys_info;
DROP FUNCTION IF EXISTS sys_get;
DROP FUNCTION IF EXISTS sys_set;
DROP FUNCTION IF EXISTS sys_exec;
DROP FUNCTION IF EXISTS sys_eval;
CREATE FUNCTION lib_mysqludf_sys_info RETURNS string SONAME 'lib_mysqludf_sys.so';
CREATE FUNCTION sys_get RETURNS string SONAME 'lib_mysqludf_sys.so';
CREATE FUNCTION sys_set RETURNS int SONAME 'lib_mysqludf_sys.so';
CREATE FUNCTION sys_exec RETURNS int SONAME 'lib_mysqludf_sys.so';
CREATE FUNCTION sys_eval RETURNS string SONAME 'lib_mysqludf_sys.so';
四、测试
1、准备sh文件
在linux系统中执行下面的命令
su mysql
mkdir /mysqlUDFtest
cd mysqlUDFtest
vi test.sh
#/bin/sh
date > testlog.txt
chmod +x ./test.sh
2、准备数据库表和触发器
选择一个数据库执行如下命令:
CREATE TABLE test1(a1 INT) engine=InnoDB;
CREATE TABLE test2(a2 INT) engine=InnoDB;
DELIMITER |
DROP TRIGGER /*!50032 IF EXISTS */ `test`.`testref`|
create trigger `test`.`testref` BEFORE INSERT on `test`.`test1`
for each row BEGIN
DECLARE done INT DEFAULT 999;
set done = sys_exec("/mysqlUDFtest/test.sh");
INSERT INTO test2(a2)values(2);
END;
|
DELIMITER ;
3、向test1表中插入一条数据后,请在Linux命令行:用root用户,执行以下命令:find / -name testlog.txt
查找testlog.txt文件。
在 CentOS/RHEL/Scientific Linux 6 下安装 LAMP (Apache with MariaDB and PHP)
MariaDB Proxy读写分离的实现
Linux下编译安装配置MariaDB数据库的方法
CentOS系统使用yum安装MariaDB数据库
安装MariaDB与MySQL并存
MariaDB 的详细介绍:请点这里
MariaDB 的下载地址:请点这里
本文永久更新链接地址:

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