CentOS 6.x使用yum快速安装MySQL 5.5-Mysql Tutorial-php.cn

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CentOS 6.x使用yum快速安装MySQL 5.5

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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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