Redis作mysql的缓存服务器

其他 2018-08-14 05:08:34 阅读次数: 0

一.架构图

这里写图片描述

server1:lnmp架构

server2：redis

server3 ：mysql

1. 安装 lnmp 环境

[root@server1 ~]# yum install nginx-1.8.0-1.el6.ngx.x86_64.rpm php-*  

nginx php php-fpm php-cli php-common php-gd php-mbstring php-mysql
php-pdo php-devel mysql mysql-server
1.1配置php
root@server1 php.d]# vim /etc/php.ini ## 修改时区
date.timezone = Asia/Shanghai
[root@server1 php.d]# cd /etc/php-fpm.d/
[root@server1 php-fpm.d]# ls
www.conf
[root@server1 php-fpm.d]# vim www.conf    ##修改用户和组

这里写图片描述

[root@server1 php-fpm.d]# /etc/init.d/php-fpm restart   ##重启服务
Stopping php-fpm:                                          [  OK  ]
Starting php-fpm:
1.2配置nginx
[root@server1 nginx]# cd conf.d/
[root@server1 conf.d]# ls
default.conf  example_ssl.conf
[root@server1 conf.d]# vim default.conf

这里写图片描述
这里写图片描述

[root@server1 conf.d]# /etc/init.d/nginx start
Starting nginx:                                            [  OK  ]
1.3测试是否搭建成功
[root@server1 conf.d]# cd /usr/share/nginx/html/
[root@server1 html]# ls
50x.html  index.html
[root@server1 html]# vim idenx.php
[root@server1 html]# cat idenx.php 
<?php
phpinfo()
?>

这里写图片描述

2. 安装 php 的 redis 扩展

[root@server1 ~]# unzip phpredis-master.zip

[root@server1 ~]# cd phpredis-master
[root@server1 phpredis-master]# ls
common.h   debian          library.c         php_redis.h      redis_session.c  tests
config.m4  debian.control  library.h         README.markdown  redis_session.h
CREDITS    igbinary        mkdeb-apache2.sh  redis.c          serialize.list
[root@server1 phpredis-master]# phpize   ##打开php扩展
Configuring for:
PHP Api Version:         20090626
Zend Module Api No:      20090626
Zend Extension Api No:   220090626
[root@server1 phpredis-master]# ./configure 

[root@server1 phpredis-master]#   make && make install
Installing shared extensions:     /usr/lib64/php/modules/
root@server1 modules]# cd /etc/php.d/  ##php服务的默认目录
[root@server1 php.d]# cp mysql.ini redis.ini
[root@server1 php.d]# vim redis.ini

这里写图片描述

root@server1 php.d]# /etc/init.d/php-fpm reload   ##刷新php是其平滑加载
Reloading php-fpm: [12-Aug-2018 12:05:12] NOTICE: configuration file /etc/php-fpm.conf test is successful
                                                          [  OK  ]
[root@server1 php.d]# php -m |grep redis
redis

3.配置mysql

root@server3 mysql]# /etc/init.d/mysqld start
[root@server3 mysql]# mysql -p
mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| mysql |
| test |
+——————–+
3 rows in set (0.00 sec)

mysql> grant all on test.* to redis@’%’ identified by ‘westos’; ##添加一个用户
Query OK, 0 rows affected (0.00 sec)

测试：

[root@server1 ~]# cp  test.php /usr/share/nginx/html/index.php 
cp: overwrite `/usr/share/nginx/html/index.php'? y


root@server1 ~]# cd /usr/share/nginx/html/
[root@server1 html]# ls
50x.html  index.html  index.php
[root@server1 html]# vim index.php

这里写图片描述

[root@server1 ~]# scp test.sql server3:/root
test.sql

server3测试

[root@server3 ~]# vim test.sql
这里写图片描述

[root@server3 ~]# mysql < test.sql
mysql> use test 
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 test 
    -> ;
+----+-------+
| id | name  |
+----+-------+
|  1 | test1 |
|  2 | test2 |
|  3 | test3 |
|  4 | test4 |
|  5 | test5 |
|  6 | test6 |
|  7 | test7 |
|  8 | test8 |
|  9 | test9 |
+----+-------+
9 rows in set (0.00 sec)

打开redis

浏览器测试是否成功

这里写图片描述

Server2：测试

[root@server2 ~]# redis-cli 
127.0.0.1:6379> get 1
"test1"
127.0.0.1:6379> get 2
"test2"
127.0.0.1:6379> get 3
"test3"
127.0.0.1:6379> get 4
"test4"
127.0.0.1:6379> get 8
"test8"

这样情况下mysql和woker是分开的，当mysql更新之后，redis不会更新

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一.下面要编写的 mysql 触发器,就相当于 Gearman 的客户端。修改表,插入表就相当于直接下发任务。然后通过 lib_mysqludf_json UDF 库函数将关系数据映射为 JSON 格后在通过 gearman-mysql-udf 插件将任务加入到 Gearman 的任务队列中,最后通过redis_worker.php,也就是 Gearman 的 worker 端来完成 redis 数据库的更新。

1. 安装 gearman 软件包:
[root@server1 ~]# yum install -y gearmand-1.1.8-2.el6.x86_64.rpm   libgearman-* libevent-*

[root@server1 ~]# service gearmand start
Starting gearmand:                                         [  OK  ]
[root@server1 ~]# netstat -antlp |grep gearmand
tcp        0      0 0.0.0.0:4730                0.0.0.0:*                   LISTEN      4410/gearmand       
tcp        0      0 :::4730                     :::*                        LISTEN      4410/gearmand
2. 安装 lib_mysqludf_json
lib_mysqludf_json UDF 库函数将关系数据映射为 JSON 格式。通常,数据库中的数据映射为 JSON 格式,是通过程序来转换的
root@server3 ~]# unzip lib_mysqludf_json-master.zip 
[root@server3 lib_mysqludf_json-master]# yum install -y gcc mysql-devel
[root@server3 lib_mysqludf_json-master]# gcc $(mysql_config --cflags) -shared -fPIC -o lib_mysqludf_json.so lib_mysqludf_json.c
[root@server3 lib_mysqludf_json-master]# ll lib_mysqludf_json.so 

-rwxr-xr-x 1 root root 22223 Aug 12 14:45 lib_mysqludf_json.so
拷贝 lib_mysqludf_json.so 模块:
root@server3 lib_mysqludf_json-master]# cp lib_mysqludf_json.so /usr/lib64/mysql/plugin/
查看 mysql 的模块目录:
mysql> show global variables like 'plugin_dir';
+---------------+-------------------------+
| Variable_name | Value                   |
+---------------+-------------------------+
| plugin_dir    | /usr/lib64/mysql/plugin |
+---------------+-------------------------+
1 row in set (0.00 sec)

mysql> CREATE FUNCTION json_object RETURNS STRING SONAME  ##插入函数
    -> 'lib_mysqludf_json.so';
Query OK, 0 rows affected (0.00 sec)

mysql> select * from mysql.func;
+-------------+-----+----------------------+----------+
| name        | ret | dl                   | type     |
+-------------+-----+----------------------+----------+
| json_object |   0 | lib_mysqludf_json.so | function |
+-------------+-----+----------------------+----------+
1 row in set (0.00 sec)
3. 安装 gearman-mysql-udf:

这个插件是用来管理调用 Gearman 的分布式的队列。

[root@server3 ~]# tar zxf gearman-mysql-udf-0.6.tar.gz 
[root@server3 ~]# cd gearman-mysql-udf-0.6

[root@server3 gearman-mysql-udf-0.6]# ./configure --libdir=/usr/lib64/mysql/plugin/



[root@server3 ~]# yum install -y libgearman-* libevent-*


[root@server3 gearman-mysql-udf-0.6]# ./configure --libdir=/usr/lib64/mysql/plugin/
[root@server3 gearman-mysql-udf-0.6]# make && make insta
4.注册 UDF 函数
mysql> CREATE FUNCTION gman_do_background RETURNS STRING SONAME
    -> 'libgearman_mysql_udf.so';
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE FUNCTION gman_servers_set RETURNS STRING SONAME
    -> 'libgearman_mysql_udf.so';
Query OK, 0 rows affected (0.00 sec)
查看函数
mysql> select * from mysql.func;
+--------------------+-----+-------------------------+----------+
| name               | ret | dl                      | type     |
+--------------------+-----+-------------------------+----------+
| json_object        |   0 | lib_mysqludf_json.so    | function |
| gman_do_background |   0 | libgearman_mysql_udf.so | function |
| gman_servers_set   |   0 | libgearman_mysql_udf.so | function |
+--------------------+-----+-------------------------+----------+

5.指定 gearman 的服务信息

mysql> SELECT gman_servers_set('172.25.24.1:4730');
+--------------------------------------+
| gman_servers_set('172.25.24.1:4730') |
+--------------------------------------+
| 172.25.24.1:4730                     |
+--------------------------------------+
1 row in set (0.00 sec)
6. 编写 mysql 触发器(根据实际情况编写
[root@server3 ~]# vim test.sql

这里写图片描述

查看触发器

[root@server3 ~]# mysql < test.sql     ##导入
mysql> SHOW TRIGGERS FROM test;     ##查看触发器
+-------------+--------+-------+----------------------------------------------------------------------------------------------------------------+--------+---------+----------+----------------+----------------------+----------------------+--------------------+
| Trigger     | Event  | Table | Statement                                                                                                      | Timing | Created | sql_mode | Definer        | character_set_client | collation_connection | Database Collation |
+-------------+--------+-------+----------------------------------------------------------------------------------------------------------------+--------+---------+----------+----------------+----------------------+----------------------+--------------------+
| datatoredis | UPDATE | test  | BEGIN
    SET @RECV=gman_do_background('syncToRedis', json_object(NEW.id as `id`, NEW.name as `name`)); 
  END | AFTER  | NULL    |          | root@localhost | latin1               | latin1_swedish_ci    | latin1_swedish_ci  |
+-------------+--------+-------+----------------------------------------------------------------------------------------------------------------+--------+---------+----------+----------------+----------------------+----------------------+--------------------+
1 row in set (0.00 sec)

二.编写 gearman 的 worker 端（server1）

[root@server1 ~]# vim worker.php

这里写图片描述

[root@server1 ~]# cp worker.php /usr/local/
1.安装 php 的 gearman 扩展
[root@server1 ~]# tar zxf gearman-1.1.2.tgz 
[root@server1 ~]# cd gearman-1.1.2
[root@server1 gearman-1.1.2]# ls
ChangeLog  examples       php_gearman.h    tests
config.m4  LICENSE        README           test_worker.php
CREDITS    php_gearman.c  test_client.php
[root@server1 gearman-1.1.2]# phpize 
Configuring for:
PHP Api Version:         20090626
Zend Module Api No:      20090626
Zend Extension Api No:   220090626
[root@server1 gearman-1.1.2]# ./configure

[root@server1 gearman-1.1.2]# make && make install

[root@server1 gearman-1.1.2]# cd /usr/lib64/php/modules/
[root@server1 modules]# ls
curl.so      gearman.so   mysqli.so     pdo.so         redis.so
fileinfo.so  json.so      mysql.so      pdo_sqlite.so  sqlite3.so
gd.so        mbstring.so  pdo_mysql.so  phar.so        zip.so
[root@server1 modules]# ll gearman.so 
-rwxr-xr-x 1 root root 280170 Aug 12 15:10 gearman.so
[root@server1 modules]# cd /etc/php.d/
[root@server1 php.d]# cp redis.ini gearman.ini
[root@server1 php.d]# vim gearman.ini

这里写图片描述

root@server1 php.d]# /etc/init.d/php-fpm reload
Reloading php-fpm: [12-Aug-2018 15:12:04] NOTICE: configuration file /etc/php-fpm.conf test is successful

                                                           [  OK   ]
                                                           [root@server1 php.d]# 
[root@server1 php.d]# php -m |grep gearman
gearman
2.将woker打入后台
root@server1 local]# nohup php /usr/local/worker.php &
[3] 6786
[root@server1 local]# nohup: ignoring input and appending output to `nohup.out'
测试:
Server3:
mysql> use test
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> update test set name='redhat';
Query OK, 9 rows affected (0.47 sec)
Rows matched: 9  Changed: 9  Warnings: 0

这里写图片描述

mysql> update test set name='xiaoqin';
Query OK, 9 rows affected (0.07 sec)
Rows matched: 9  Changed: 9  Warnings:

这里写图片描述

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