Linux下安装MySQL 5.7.11版本数据库

注 : 本文大部分内容引自 https://www.cnblogs.com/xiaotao726/p/6562265.html

但原文中第9点创建软连接的时候，如果使用原作者方法，会出现以下情况:

root@DB-02 ~]# mysql -u root-bash: mysql: command not found

下文已斧正~

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1、这里我将Mysql安装在/usr/local/mysql目录里面，也可以安装在其他地方;

mkdir /usr/local/mysql

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2、下载MySQL压缩包

wget http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz

// 如果上边的命令不行的话 可以使用下边的命令

curl -O -L http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz 

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3、解压并复制

tar -xvf mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gzmv mysql-5.7.11-Linux-glibc2.5-x86_64/* /usr/local/mysql/

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4、创建data目录

mkdir /usr/local/mysql/data

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5、创建mysql用户组及其用户

groupadd mysqluseradd -r -g mysql mysql

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6、初始化数据

[root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/2016-01-20 02:47:35 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize2016-01-20 02:47:45 [WARNING] The bootstrap log isn't empty:2016-01-20 02:47:45 [WARNING] 2016-01-19T18:47:36.732678Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead2016-01-19T18:47:36.750527Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)2016-01-19T18:47:36.750560Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

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7、复制配置文件到 /etc/my.cnf

cp -a ./support-files/my-default.cnf /etc/my.cnf (选择y) 

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8、MySQL的服务脚本放到系统服务中

cp -a ./support-files/mysql.server /etc/init.d/mysqld修改my.cnf文件# These are commonly set, remove the # and set as required.basedir = /usr/local/mysqldatadir = /usr/local/mysql/dataport = 3306# server_id = .....socket = /tmp/mysql.sockcharacter-set-server = utf8# 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

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9、创建In

ln -s /usr/local/mysql/bin/mysql  /usr/bin/

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10、启动服务

service mysqld start

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11、初始化密码

mysql5.7会生成一个初始化密码，在root中.mysql_secret文件中。

[root@xinyi /]# cat /root/.mysql_secret# Password set for user 'root@localhost' at 2017-12-06 23:47:25 s3CJ#pF%V8/m

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12、登录并修改密码

[root@localhost ~]# mysql -u root -palter user root@localhost identified by 'cyy';flush privileges;

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13、退出重新登录，完成

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| mysql |
| performance_schema |
| sys |
+——————–+
4 rows in set (0.11 sec)

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14.退出

exit(回车)

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以下内容为根据网上相关资料自我总结：

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如何在Windows系统下使用Navicat连接Linux数据库 ?

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1.编辑Linux防火墙，放开3306端口

 1. vi /etc/sysconfig/iptables 2. 添加：-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

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2.重启防火墙

/etc/init.d/iptables restart

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3.数据库远程用户授权，刷新缓存

 1. grant all privileges on *.* to 'root'@'%' identified by 'admin' with grant option;  2. flush privileges; 

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4.查看mysql端口

netstat -anp | grep mysql

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5.Windows使用Navicat工具连接数据库，并且创建新的数据库、创建测试表

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6.Linux下查看数据库的数据

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登录数据库：

mysql -u root -p

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进入数据库 :

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查看表中数据 :

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总结 : 网上的东西良莠不齐，只有亲自验证了才知正确与否。很感谢网友们经验的分享~！