MySQL的源码安装
1. 安装依赖组件
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| 1 | # yum install gcc gcc-c++ ncurses-devel perl -y |
2. 安装cmake
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# wget http://www.cmake.org/files/v2.8/cmake-2.8.12.tar.gz# tar zxvf cmake-2.8.12.tar.gz# cd cmake-2.8.12# ./bootstrap # make && make install
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3. 安装bison
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# wget http://ftp.gnu.org/gnu/bison/bison-3.0.2.tar.gz# tar zxvf bison-3.0.2.tar.gz# cd bison-3.0.2# ./configure# make && make install
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4. 创建用户的相应目录
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# groupadd mysql# useradd -g mysql mysql# mkdir -p /data/mysql/# mkdir -p /data/mysql/data/# mkdir -p /data/mysql/log/
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5. 获取mysql安装包并安装
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# wget http://downloads.mysql.com/archives/mysql-5.5/mysql-5.5.24.tar.gz# tar zxvf mysql-5.5.24.tar.gz# cd mysql-5.5.24# cmake -DCMAKE_INSTALL_PREFIX=/data/mysql -DMYSQL_UNIX_ADDR=/data/mysql/mysql.sock -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DMYSQL_DATADIR=/data/mysql/data -DMYSQL_TCP_PORT=3306 -DENABLE_DOWNLOADS=1# make && make install
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6. 修改目录权限
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# chmod +w /data/mysql/# chown -R mysql:mysql /data/mysql/ # ln -s /data/mysql/lib/libmysqlclient.so.18 /usr/lib/libmysqlclient.so.18# ln -s /data/mysql/mysql.sock /tmp/mysql.sock
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7. 初始化数据库
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# cp -rp /data/mysql/support-files/my-medium.cnf /etc/my.cnf# cp -rp /data/mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld# /data/mysql/scripts/mysql_install_db --user=mysql --defaults-file=/etc/my.cnf --basedir=/data/mysql --datadir=/data/mysql/data
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8. 启动mysql服务
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# chmod +x /etc/init.d/mysqld# vi /etc/init.d/mysqld -->basedir=/data/mysqldatadir=/data/mysql/data# chkconfig --add mysqld# service mysqld start
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9. 完成配置
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# /data/mysql/bin/mysqladmin -uroot -p password 'PASSWD'# echo "export PATH=/data/mysql/bin:$PATH" >> ~/.bash_profile # source ~/.bash_profile
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UDFs实现Memcached与Mysql的自动更新
UDFs是User Defined Functions的缩写，表示MYSQL的用户定义函数，应用程序可以利用这些函数从MYSQL5.0以上版本的数据库中访问Memcached写入或者获取的数据。此外，MYSQL从5.1版本开始支持触发器，从而可以在触发器中使用UDFs直接更新Memcached的内容，这种方式降低了应用程序设计和编写的复杂性。
1.安装
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wget https://launchpad.net/libmemcached/1.0/0.34/+download/libmemcached-0.34.tar.gzyum install gcc44 gcc44-c++ libstdc++44-develexport CC=/usr/bin/gcc44export CXX=/usr/bin/g++44./configure --prefix=/soft/libmemcached -disable-64bit CFLAGS="-O3 -march=i686" --with-memcached=/root/libmemcached-1.0.7/memcachedmake && make install
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wget https://launchpad.net/memcached-udfs/trunk/1.1/+download/memcached_functions_mysql-1.1.tar.gz./configure --prefix=/soft/UDFS/memcache_mysql --with-mysql=/soft/mysql/bin/mysql_config --libdir=/soft/mysql/lib/plugin --with-libmemcached=/soft/UDFS/libmemcached
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make && make installmysql -uroot -pmysql
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select memc_servers_set('127.0.0.1:11211');//如果mysql restart，需要重新运行这句以建立与memcached之间的关系select memc_server_count();select memc_set('urls:sequence', 0); select memc_list_behaviors()G//修改memcached参数的行为 select memc_servers_behavior_set('MEMCACHED_BEHAVIOR_NO_BLOCK','1');selectmemc_servers_behavior_set('MEMCACHED_BEHAVIOR_TCP_NODELAY','1');
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设置MEMCACHED_BEHAVIOR_NO_BLOCK为打开状态，这样在memcached出现问题时（不能连接时）数据继续插入到
mysql中，报错提示，如果不设置此值，如果memcached失败，mysql需要等到timeout才可以插入到表中。
2.测试：
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drop table if exists urls;create table urls ( id int(3) not null auto_increment, url varchar(64) not null default '', primary key (id) ); select memc_servers_set('localhost:11211');select memc_set('urls:sequence', 0); DELIMITER | DROP TRIGGER IF EXISTS url_mem_insert |CREATE TRIGGER url_mem_insertBEFORE INSERT ON urlsFOR EACH ROW BEGIN SET NEW.id= memc_increment('urls:sequence'); SET @mm= memc_set(NEW.id, NEW.url);END | DROP TRIGGER IF EXISTS url_mem_update |CREATE TRIGGER url_mem_updateBEFORE UPDATE ON urlsFOR EACH ROW BEGIN SET @mm= memc_replace(OLD.id, NEW.url);END | DROP TRIGGER IF EXISTS url_mem_delete |CREATE TRIGGER url_mem_deleteBEFORE DELETE ON urlsFOR EACH ROW BEGIN SET @mm= memc_delete(OLD.id);END | DELIMITER ; insert into urls (url) value ('http://google.com');insert into urls (url) value ('http://lycos.com/');insert into urls (url) value ('http://tripod.com/');insert into urls (url) value ('http://microsoft.com/');insert into urls (url) value('http://slashdot.org');insert into urls (url) value ('http://mysql.com');select * from urls; select memc_get('urls:1');select memc_get('urls:2');select memc_get('urls:3');select memc_get('urls:4');select memc_get('urls:5');select memc_get('urls:6'); update urls set url= 'http://mysql.com/sun' where url = 'http://mysql.com';select url from urls where url = 'http://mysql.com/sun';select memc_get('urls:6'); delete from urls where url = 'http://microsoft.com/';select * from urls where url='http://microsoft.com/';select memc_get('urls:4');
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