本文實例講述了centos6.7安裝mysql5.5.48的方法。分享給大家供大家參考，具體如下：
RPM安裝mysql 5.5.48
下載對應的MySQL安裝包rpm文件，可以去MySQL官方網站找到對應版本，一般需要下載3個文件
MySQL-server
MySQL-client
MySQL-devel
復制代碼代碼如下:
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-server-5.5.48-1.el6.x86_64.rpm
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-client-5.5.48-1.el6.x86_64.rpm
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-devel-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-server-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-client-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-devel-5.5.48-1.el6.x86_64.rpm
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-client-5.5.48-1.el6.x86_64.rpm
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-devel-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-server-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-client-5.5.48-1.el6.x86_64.rpm
rpm -ivh MySQL-devel-5.5.48-1.el6.x86_64.rpm
安裝服務端出錯：
復制代碼代碼如下:
[root@localhost ~]# rpm -ivh MySQL-server-5.5.48-1.el6.x86_64.rpm
warning: MySQL-server-5.5.48-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
file /usr/share/mysql/charsets/Index.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/armscii8.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/ascii.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/cp1250.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/cp1256.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
warning: MySQL-server-5.5.48-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
file /usr/share/mysql/charsets/Index.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/armscii8.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/ascii.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/cp1250.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
file /usr/share/mysql/charsets/cp1256.xml from install of MySQL-server-5.5.48-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
錯誤原因：包沖突了
centos6.7 basic server 版本 默認安裝了mysql5.1，所以先卸載mysql5.1
復制代碼代碼如下:
yum -y remove mysql-libs-5.1*
再重新安裝即可
復制代碼代碼如下:
rpm -ivh MySQL-server-5.5.48-1.el6.x86_64.rpm
啟動mysql
復制代碼代碼如下:
[root@localhost ~]# service mysql start
Starting MySQL SUCCESS!
Starting MySQL SUCCESS!
CentOS下安裝官方RPM包的MySQL后找不到my.cnf解決辦法
復制 /usr/share/mysql/my-medium.cnf 文件到/etc目錄，
復制代碼代碼如下:
cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
局域網內mysql連接慢的解決辦法
ping都很快，mysql連接慢，
原因是由于mysql對連接的客戶端進行DNS反向解析。
有2種解決辦法：
1. 把client的ip寫在mysql服務器的/etc/hosts文件里，隨便給個名字就可以了。
2. 在 my.cnf 中加入 –skip-name-resolve 。
希望本文所述對大家centos服務器配置有所幫助。
