Home Database Mysql Tutorial CentOS 6.x使用yum快速安装MySQL 5.5

CentOS 6.x使用yum快速安装MySQL 5.5

Jun 07, 2016 pm 05:26 PM
yum

MySQL 5.5系列成为稳定版已经有一段时间了,但据我调查了解,在生产环境中还是以5.1系列为主。在国内的大公司里,只确定金山在使

MySQL 5.5系列成为稳定版已经有一段时间了,但据我调查了解,在生产环境中还是以5.1系列为主。在国内的大公司里,只确定金山在使用5.5了。
 之前一直用自带安装的MySQL 5.1系列,使用了innodb存储引擎,偶发现5.1对innodb引擎支持不怎么好,数据库并发连接数多时会出现丢连接,,于是就想升级到5.5试试。因已安装了5.0,所以不想编译安装了。就直接找了一个国外编译好的5.5的yum源,直接升级,跑了一个月了,发现很稳定!就分享一下:
 
1、安装MySQL 5.5.x的yum源:
 rpm -Uvh
 
2、安装MySQL客户端的支持包:
 yum install libmysqlclient15 --enablerepo=webtatic
 
3、卸载MySQL老版本的软件包:
 yum remove mysql mysql-*
 
4、安装MySQL 5.5的客户端和服务端:
 yum install mysql55 mysql55-server --enablerepo=webtatic  //--enablerepo=webtatic 指定使用我们第一步下载的yum源进行下载安装
 
5、启动MySQL系统服务,更新数据库:
 
/etc/init.d/mysqld restart
 mysql_upgrade
 
6、附:此台服务器的my.cnf配置
 
skip-locking
 skip-name-resolve
 key_buffer = 1024M
 back_log = 3000
 max_allowed_packet = 4M
 table_cache = 512
 sort_buffer_size = 8M
 read_buffer_size = 8M
 myisam_sort_buffer_size = 1024M
 thread_cache = 512
 query_cache_size = 512M
 set-variable = wait_timeout=60
 thread_concurrency = 4
 log-slow-queries = slow.log
 long_query_time = 1
 innodb_flush_log_at_trx_commit = 2
 innodb_buffer_pool_size = 1024M
 #innodb_locks_unsafe_for_binlog = 1
 如果不是升级,而是新安装。还需要设置root密码,删除默认的空用户、空密码等等.........

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