一、卸载旧版本1、使用下面的命令检查是否安装有mysql[root@localhost tools]# rpm -qa|grep -i mysql2、有的话就卸载[root@localhost tools]# yum remove MySQL-server-5.6.35-1.el6.i686[root@localhost tools]# yum remove MySQL-devel-5.6.35-1.el6.i686[root@localhost tools]# yum remove MySQL-client-5.6.35-1.el6.i686[root@localhost tools]# yum remove mysql-utilities-1.6.5-1.el6.noarch[root@localhost tools]# yum remove mysql-connector-python-2.1.5-1.el6.i6863、删除相关目录[root@localhost tools]# whereis mysql[root@localhost tools]# rm -rf /usr/share/mysql [root@localhost tools]# rm -rf /var/lib/mysql[root@localhost mysql]# mv /usr/lib/mysql /usr/lib/mysql.bak   #这个当时不确定是rmp包所创建，暂时改名二、安装MySQL4、安装编译代码需要的包[root@localhost tools]# yum list|grep ncurses-devel[root@localhost tools]# yum -y install make gcc-c++ cmake bison-devel ncurses-devel5、下载MySQL 5.6.35[root@localhost tools]# wget https://cdn.mysql.com//Downloads/MySQL-5.6/mysql-5.6.35.tar.gz[root@localhost tools]# tar zxvf mysql-5.6.35.tar.gz[root@localhost tools]# cd mysql-5.6.35第一次下载错了(mysql-5.6.35-linux-glibc2.5-i686.tar.gz)，编译时总是报错CMake Error: The source directory “*” does not appear to contain CMakeLists.txt.要选择的是 MySQL Community Server 下的 Source Code！！！6、目录创建(-p父目录不存在则创建此目录)[root@localhost mysql-5.6.35]# mkdir -p /usr/local/mysql/data7、编译安装[root@localhost mysql-5.6.35]# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/usr/local/mysql/data -DSYSCONFDIR=/etc -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_MEMORY_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock -DMYSQL_TCP_PORT=3306 -DENABLED_LOCAL_INFILE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci[root@localhost mysql-5.6.35]# make && make install[root@localhost mysql-5.6.35]# make clean三、配置MySQL8、设置权限查看是否有mysql用户及用户组[root@localhost mysql-5.6.35]# cat /etc/passwd[root@localhost mysql-5.6.35]# cat /etc/group如果没有就添加mysql用户和组[root@localhost mysql-5.6.35]# groupadd mysql[root@localhost mysql-5.6.35]# useradd -g mysql mysql修改/usr/local/mysql权限[root@localhost mysql-5.6.35]# chown -R mysql:mysql /usr/local/mysql9、初始化配置进入安装路径[root@localhost mysql-5.6.35]# cd /usr/local/mysql执行初始化配置脚本，创建系统自带的数据库和表[root@localhost mysql]# scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql10、启动MySQL添加服务，拷贝服务脚本到init.d目录如果/etc目录有之前存在的my.cnf文件，将其重命名。启动MySQL服务时，会优先在/etc目录下查找[root@localhost mysql]# mv /etc/my.cnf /etc/my.cnf.bak  #[root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql[root@localhost mysql]# chkconfig mysql on[root@localhost mysql]# service mysql start  --启动MySQL11、配置用户设置PATH[root@localhost mysql]# PATH=/usr/local/mysql/bin:$PATH[root@localhost mysql]# export PATH[root@localhost mysql]# source /etc/profile修改root密码[root@localhost mysql]# mysql -urootmysql> SET PASSWORD = PASSWORD(‘mysql5635‘);设置mydba用户可以远程访问mysql> GRANT ALL PRIVILEGES ON *.* TO ‘mydba‘@‘%‘ IDENTIFIED BY ‘mysql5635‘ WITH GRANT OPTION;防火墙设置可参考 http://www.cnblogs.com/ShanFish/p/6519950.html12、补充退出后重新在终端登录[root@localhost ~]# mysql -uroot -pbash: mysql: command not found使用完整的路径可以登录[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -pEnter password:‘/usr/local/mysql/bin:‘这个有加到path中，不知道为什么就不能直接用mysql最后建立一个软链接，其它常用命令mysqladmin、mysqldump等不可用时候都可按用此方法解决[root@localhost ~]# ln -s /usr/local/mysql/bin/mysql /usr/bin