我本来只是为了搭建简单的LAMP环境，亲自动手，却发现有这么多的问题会发生。(by default7#zbphp.com)
很多地方给的安装Mysql的提示是通过yum一键安装。shell命令如下：
yum install mysql yum install mysql-server yum install mysql-devel
但是，这个命令安装的mysql版本很旧，5.1.0x版本的，官网的Mysql已经是 5.6.x版本了。太旧了，记得08年的时候就出了 5.1的版本了。
坚持安装最新版本的，在MYSQL官网下载rpm-.tar安装包，300MB左右。linux64。
[root@localhost mysqlinstall]# ls MySQL-client-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-devel-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-embedded-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-server-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-shared-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-shared-compat-5.6.19-1.linux_glibc2.5.x86_64.rpm MySQL-test-5.6.19-1.linux_glibc2.5.x86_64.rpm [root@localhost mysqlinstall]# pwd /home/default7@zbphp.com/Downloads/mysqlinstall [root@localhost mysqlinstall]# ?
但是按照网上（CSDN博客、blogcn博客）一步步提示来安装但是总是各种问题，各种问题，无法运行。
最后尝试了很多遍终于安装成功，正常运行：
[root@localhost /]# yum remove mysql Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Remove Process No Match for argument: mysql Loading mirror speeds from cached hostfile * base: mirrors.163.com * extras: mirrors.163.com * updates: mirrors.163.com Package(s) mysql available, but not installed. No Packages marked for removal [root@localhost /]# yum remove mysql-server Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Remove Process Resolving Dependencies --> Running transaction check ---> Package MySQL-server.x86_64 0:5.6.19-1.linux_glibc2.5 will be erased --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Removing: MySQL-server x86_64 5.6.19-1.linux_glibc2.5 installed 248 M Transaction Summary ================================================================================ Remove 1 Package(s) Installed size: 248 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Erasing : MySQL-server-5.6.19-1.linux_glibc2.5.x86_64 1/1 Verifying : MySQL-server-5.6.19-1.linux_glibc2.5.x86_64 1/1 Removed: MySQL-server.x86_64 0:5.6.19-1.linux_glibc2.5 Complete! [root@localhost /]# yum remove MySQL-* Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Remove Process Resolving Dependencies --> Running transaction check ---> Package MySQL-devel.x86_64 0:5.6.19-1.linux_glibc2.5 will be erased ---> Package MySQL-shared.x86_64 0:5.6.19-1.linux_glibc2.5 will be erased ---> Package MySQL-shared-compat.x86_64 0:5.6.19-1.linux_glibc2.5 will be erased --> Processing Dependency: libmysqlclient.so.16()(64bit) for package: perl-DBD-MySQL-4.013-3.el6.x86_64 --> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: perl-DBD-MySQL-4.013-3.el6.x86_64 --> Running transaction check ---> Package perl-DBD-MySQL.x86_64 0:4.013-3.el6 will be erased --> Finished Dependency Resolution Dependencies Resolved ========================================