《MysqL必读MysqL 5.7.18 安装配置方法图文教程(CentOS7)》要点：
本文介绍了MysqL必读MysqL 5.7.18 安装配置方法图文教程(CentOS7)，希望对您有用。如果有疑问，可以联系我们。
介绍如何在Linux下安装MysqL 5.7.18
MysqL实例
1、下载MysqL：官网https://www.MysqL.com/,点击Downlosas,翻到网页底部,下载社区版,一路点下去,选择通用Linux,下载64位那个,注意检查MD5
值.MysqL实例
2、安装关键步骤,直接贴出命令
MysqL实例
[cpp] view plain copy 在CODE上查看代码片派生到我的代码片 [root@CentOS MysqL]# tar -xzvf MysqL-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /usr/local [root@CentOS MysqL]# cd /usr/local [root@CentOS local]# mv MysqL-5.7.17-linux-glibc2.5-x86_64 MysqL [root@CentOS local]# cd MysqL [root@CentOS MysqL]# mkdir data [root@CentOS MysqL]# groupadd MysqL [root@CentOS MysqL]# useradd -r -g MysqL -s/bin/false MysqL [root@CentOS MysqL]# chown -R MysqL:MysqL ./ [root@CentOS MysqL]# bin/MysqLd --initialize --user=MysqL --basedir=/usr/local/MysqL --datadir=/usr/local/MysqL/data 2017-02-23T07:43:03.404885Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2017-02- 23T07:43:04.442174Z 0 [Warning] InnoDB: New log files created,LSN=45790 2017-02-23T07:43:04.588507Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2017-02-23T07:43:04.646721Z 0 [Warning] No existing UUID has been found,so we assume that this is the first time that this server has been started. Generating a new UUID: b5c8e226-f99b-11e6-beb5-b7c1a1e39029. 2017-02-23T07:43:04.671492Z 0 [Warning] Gtid table is not ready to be used. Table 'MysqL.gtid_executed' cannot be opened. 2017-02-23T07:43:04.672338Z 1 [Note] A temporary password is generated for root@localhost: I%e=s+lfx9ko [root@CentOS MysqL]# bin/MysqL_ssl_rsa_setup --datadir=/usr/local/MysqL/data Generating a 2048 bit RSA private key .....................................+++ ..............................+++ writing new private key to 'ca-key.pem' ----- Generating a 2048 bit RSA private key .........................................+++ .........................+++ writing new private key to 'server-key.pem' ----- Generating a 2048 bit RSA private key ..................................................+++ ...................................................................................................................................................................................................+++ writing new private key to 'client-key.pem' ----- [root@CentOS MysqL]# cd support-files [root@CentOS support-files]# cp my-default.cnf /etc/my.cnf [root@CentOS support-files]# gedit /etc/my.cnf [root@CentOS support-files]# cp MysqL.server /etc/init.d/MysqLd [root@CentOS support-files]# service MysqLd start Starting MysqL.Logging to '/usr/local/MysqL/data/CentOS.cn.err'. . SUCCESS! [root@CentOS support-files]# ps aux |grep MysqL root 18279 0.0 0.0 11764 1576 pts/0 S 17:34 0:00 /bin/sh /usr/local/MysqL/bin/MysqLd_safe --datadir=/usr/local/MysqL/data --pid-file=/usr/local/MysqL/data/CentOS.cn.pid MysqL 18449 1.9 9.5 1182688 177940 pts/0 Sl 17:34 0:00 /usr/local/MysqL/bin/MysqLd -- basedir=/usr/local/MysqL --datadir=/usr/local/MysqL/data --plugin-dir=/usr/local/MysqL/lib/plugin --user=MysqL --log-error=/usr/local/MysqL/data/CentOS.cn.err --pid-file=/usr/local/MysqL/data/CentOS.cn.pid --socket=/tmp/MysqL.sock --port=3306 [root@CentOS support-files]#
一行一行解释：
MysqL实例
把压缩包解压到/usr/local目录下,就是把MysqL安装在该目录下.
MysqL实例
切换到/usr/local,把刚才解压后的文件夹重命名为MysqL.
MysqL实例
在MysqL目录下创建data文件夹,用来存储MysqL的数据.
MysqL实例
第一步,bin/MysqLd 注意后面给的参数,之一部会产生一个临时密码,保存,后面登录数据库要用到；MysqL实例
第二步,bin/MysqL_ssl_rsa_setup,看起来像是对数据库安全的处理,注意后面给的参数.
MysqL实例
切换到support-files目录.
MysqL实例
把my-default.cnf拷贝到 /etc/my.cnf,注意CentOS7自带了一个my.cnf文件,覆盖掉.
MysqL实例
编辑该文件,只对18,19,20,22行修改,如下MysqL实例
把MysqL.server文件拷贝到/etc/init.d/MysqLd下,主要负责MysqL的开机启动.
MysqL实例
查询MysqL进程.有两个： /MysqL/bin/MysqLd_safe、/MysqL/bin/MysqLd
MysqL实例
3、后续配置：
MysqL实例
登录MysqL,修改临时密码：/usr/local/MysqL/bin/MysqL -u root -p 回车输入初始化时生成的临时密码,修改密码：MysqL实例
set password for 'root'@localhost=password('xxxxxx');
MysqL实例
每次登录MysqL客户端嫌输绝对路径麻烦,就建一个软连接：ln -s /usr/local/MysqL/bin/MysqL /usr/bin/MysqL,这样也省去了配PATH路径的麻烦.
MysqL实例
MysqLd的开机启动,使用chkconfig命令
MysqL实例
看一下是不是在所有等级都是打开状态,例如：MysqL实例