1、My衡痕贤伎sql依赖于libaio库yum search libaio # search for info yum install lib锾攒揉敫aio # install library4.分别执行以下步骤安装Mysqlgroupadd mysql useradd -r -g mysql -s /bin/false mysql cd /usr/local tar -zxvf /opt/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /opt/ ln -s /opt/mysql-5.7.17-linux-glibc2.5-x86_64 mysql cd mysql mkdir mysql-files chmod 750 mysql-files chown -R mysql . chgrp -R mysql . bin/mysqld --initialize --user=mysql如果这一步报错如下：[ERROR] --initialize specified but the data directory has files in it. Aborting.解决方案：rm -rf /var/lib/mysql/重新执行上面的命令，提示生成了一个临时密码：2017-01-03T09:12:33.748807Z 1 [Note] A temporary password is generated for root@localhost: =*-gFoje>1Pr执行这一步应该生成一个data目录，如果没有生成，那一定是因为系统中存在已经安装好了的mysql，先按照步骤2卸载掉，然后重新执行bin/mysqld --initialize --user=mysql bin/mysql_ssl_rsa_setup chown -R root . chown -R mysql data mysql-files bin/mysqld_safe --user=mysql &下面这一步可选cp support-files/mysql.server /etc/init.d/mysqld
2、安装后的配置修改/usr/local/mysql/support-files/my-default.cnfbasedir = /usr/local/mysql datadir = /usr/local/mysql/data port = 3306改完之后复制一份到/etc/目录下，重命名为my.cnfcp my-default.cnf /etc/my.cnf添加mysql环境变量vim /etc/profile export MYSQL_HOME=/usr/local/mysql export PATH=$MYSQL_HOME/bin:$PATH source /etc/profile6.启动mysqlservice mysqld start启动成功：[root@ambari support-files]# service mysqld start Starting MySQL.Logging to '/usr/local/mysql/data/ambari.err'. . [ OK ] [root@ambari support-files]# service mysqld status MySQL running (8010) [ OK ]执行这一步的时候有可能会导致启动不成功，错误信息大概如下：MySQL: Starting MySQL….. ERROR! The server quit without updating PID file如果不愿意麻烦，可以直接重启机器也可以解决该问题至此，mysql就安装好并启动成功了。
3、修改root密码：采用mysql -uroot -p登录的时候，输入前面记录的root密码，提示密码不正确，没办法，我们只好自己去修改root密码了具体步骤如下：step1:vim /etc/my.cnf在[mysqld]下添加一行skip-grant-tablesstep2:service mysqld restart后，即可直接用mysql进入mysql> update mysql.user set authentication_string=password('root') where user='root' and Host = 'localhost'; mysql> flush privileges; mysql> quit;step3:将/etc/my.cnf文件还原，重新启动mysql:service mysqld restart,这个时候可以使用mysql -u root -p'root'进入了step4:进入到sql后以后在通过如下命令修改一次密码，否则无法进行其他操作：mysql> SET PASSWORD = PASSWORD('mysql');step5:在sql控制台执行show databases;结果如下：mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.00 sec)