MySql 5.7.23安装

1.首先上MySql的官网下载  https://dev.mysql.com/downloads/mysql/

选择源码包：

1、 新建/usr/local/src目录，保存下载的各类安装包

1	mkdir /usr/local/src

2、切换到/usr/local/src 下

1	cd /usr/local/src

3、下载mysql5.7二进制包，解压到当前目录下

1	tar -zxvf mysql-5.7.23-linux-glibc2.5-x86_64.tar.gz

4.将解过的mysql5.7包移动到/usr/local/下并改名为mysql

1	mv mysql-5.7.23-linux-glibc2.5-x86_64 /usr/local/mysql

5.切换到/usr/local/mysql下

1	/usr/local/mysql

6.新增mysql用户，并禁止shell登陆

1 2	# groupadd mysql #useradd -r -g mysql -s /sbin/nologin mysql

7.初始化mysql5.7数据库:

确认/data/mysql数据库文件夹是否存在，不存在则创建

1	# ./bin/mysqld --initialize --user=mysql --datadir=/data/mysql

a.注意生成的临时密码 Ed0fem1S(oH/

1	2018-08-30T02:03:43.986729Z 1 [Note] A temporary password is generated for root@localhost: Ed0fem1S(oH/

b.继续执行

1	# ./bin/mysql_ssl_rsa_setup --datadir=/data/mysql

8.复制配置文件并修改

注意，如果./support-files/my-default.cnf 没有这个文件，可以到网上去收一下这个文件的大致内容。

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# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL.   [mysqld]   # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M   # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin   # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # socket = .....   # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M   sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

a.复制主配置文件

1	# cp ./support-files/my-default.cnf /etc/my.cnf

b.修改 /etc/my.cnf 配置文件

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# vi /etc/my.cnf # These are commonly set, remove the # and set as required. basedir = /usr/local/mysql //指定程序路径 datadir = /data/mysql //指定数据存放路径 port = 3306 //指定端口号 # server_id = ..... socket = /tmp/mysql.sock //指定sock文件

9.复制启动文件并修改相关参数

a.复制启动脚本文件到init.d下

1	cp ./support-files/mysql.server /etc/init.d/mysqld

b.修改启动脚本相关参数

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vi /etc/init.d/mysqld basedir=/usr/local/mysql //指定程序路径 datadir=/data/mysql //指定数据存放路径

10.启动mysql服务，并查看服务启动状态

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# chkconfig --add mysqld //加入开机启动 # /etc/init.d/mysqld start //启动mysql服务 # ps aux |grep mysqld // 查看mysql进程 # netstat -ntlp | grep 3306 //查看3306端口监听情况

11.重置密码

a.使用初始化临时密码登陆

1	# /usr/local/mysql/bin/mysql -uroot -p'Ed0fem1S(oH/'

b.修改mysql登陆密码:mysql

1	mysql> set password = password('mysql');