Linux和华为欧拉系统下安装mysql-5.7.30详细步骤_欧拉系统安装mysql

大家好，又见面了，我是你们的朋友全栈君。  

Hello everyone, see you again, I'm your friend Quan Zhanjun.

Detailed steps to install mysql-5.7.30 under Linux [easy to understan

前言

下面记录了我在Linux环境下安装Mysql的完整过程，实操记录，

只为让更多人少踩坑，本次安装版本为：mysql-5.7.30，64位操作系统 官网下载地址：mysql-5.7.30-el7-x86_64.tar.gz 百度网盘地址：百度网盘地址 提取码：lyqh
The following records the complete process of installing Mysql in the Linux environment, practical records, just to let more people step on the pit, this installation version is: mysql-5.7.30, 64-bit operating system Official website download address: mysql-5.7.30-el7-x86_64.tar.gz Baidu network disk address: Baidu network disk address Extraction code: lyqh

1、安装前准备

1、检测系统是否自带mysql

[root@localhost /]# rpm -qa | grep mysql

2、如果是，则使用下面命令进行删除：

[root@localhost /]# rpm -e --nodeps ‘上一步查找的名称’

3、删除成功后，查询所有Mysql对应的文件夹 (After the deletion is successful, query all folders corresponding to MySQL)

[root@localhost ~]# whereis mysql
mysql: /usr/bin/mysql /usr/local/mysql
[root@localhost ~]# find / -name mysql
/run/lock/subsys/mysql
/etc/rc.d/init.d/mysql
/usr/bin/mysql
/usr/local/mysql
/usr/local/mysql/bin/mysql
/usr/local/mysql/include/mysql
/usr/local/mysql/data/mysql

4、删除上面查找的所有文件夹

2、安装

1、使用rz命令上传下载好的jar包

[root@localhost ~]# cd /usr/local/
[root@localhost local]# rz

2、解压

[root@localhost local]# tar -zxvf mysql-5.7.30-el7-x86_64.tar.gz

3、修改解压目录名称

[root@localhost local]# mv mysql-5.7.30-el7-x86_64/ mysql

4、在/usr/local/mysql目录下创建data目录 Create a data directory in the /usr/local/mysql directory

[root@localhost local]# mkdir mysql/data

5、检查mysql用户组和用户是否存在，如果没有，则创建 Check if the mysql user group and user exist, and if not, create it

[root@localhost local]# cat /etc/group | grep mysql
[root@localhost local]# cat /etc/passwd | grep mysql
[root@localhost local]# groupadd mysql
[root@localhost local]# useradd -r -g mysql mysql

6、更改mysql目录下所属的用户组和用户，以及权限 Change the user groups, users, and permissions of the mysql directory

[root@localhost local]# chown -R mysql:mysql /usr/local/mysql/
[root@localhost local]# chmod -R 755 /usr/local/mysql

7、编译安装并初始化mysql

[root@localhost local]# cd mysql/bin/
[root@localhost bin]# ./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data/ --basedir=/usr/local/mysql/

8. 查看并安装libaio包

[root@localhost bin]# rmp -qa|grep libaio
-bash: rmp: command not found
[root@localhost bin]# yum -y install libaio-devel.x86_64

9、再次执行步骤7，并记住日志最后的初始化密码（记住）  Perform step 7 again and remember the initialization password at the end of the log (remember)

10、编辑配置文件my.cnf

[root@localhost bin]# vi /etc/my.cnf

11、添加配置如下

[mysqld]
datadir=/usr/local/mysql/data
port=3306
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/usr/local/mysql/data/mysql.log
pid-file=/usr/local/mysql/data/mysql.pid

12、启动mysql服务器

[root@localhost bin]# /usr/local/mysql/support-files/mysql.server start

13. 添加软连接，并重启mysql服务 13. Add a soft connection and restart the MySQL service

[root@localhost bin]# ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
[root@localhost bin]# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
[root@localhost bin]# service mysql restart
Shutting down MySQL.. SUCCESS! 
Starting MySQL. SUCCESS!

14、登录mysql，修改密码为123456(登录的密码是步骤9中初始化密码)
Log in to MySQL and change the password to 123456 (the login password is the initialization password in step 9)

[root@localhost bin]# mysql -u root -p
Enter password:
mysql>set password for root@localhost = password('123456');

15、开放远程连接

mysql>use mysql;
msyql>update user set user.Host='%' where user.User='root';
mysql>flush privileges;

3、测试

1、关闭Linux防火墙

[root@localhost bin]# systemctl stop firewalld.service

2、Navicat连接测试

3、使用DBeaver连接MySQ

 下载一个DBeaver.exe

下载地址：Download | DBeaver Community

使用DBeaver连接MySQL时的驱动问题

报错：

Can’t create driver instance Error creating driver ‘MySQL’ instance. Most likely required jar files are missing. You should configure jars in driver settings. Reason: can’t load driver class ‘com.mysql.cj.jdbc.Driver’ Error creating driver ‘MySQL’ instance. Most likely required jar files are missing. You should configure jars in driver settings. Reason: can’t load driver class ‘com.mysql.cj.jdbc.Driver’ com.mysql.cj.jdbc.Driver com.mysql.cj.jdbc.Driver

无法创建驱动程序实例 创建驱动程序“MySQL”实例时出错。很可能缺少所需的 jar 文件。应在驱动程序设置中配置 jar。原因：无法加载驱动程序类“com.mysql.cj.jdbc.Driver”创建驱动程序“MySQL”实例时出错。很可能缺少所需的 jar 文件。应在驱动程序设置中配置 jar。原因：无法加载驱动程序类'com.mysql.cj.jdbc.Driver' com.mysql.cj.jdbc.Driver com.mysql.cj.jdbc.Driver

解决方案： 一般都是因为默认镜像延迟太高的问题，把默认镜像换成国内镜像就行了。

找到 首选项 > 连接 > 驱动 > 驱动位置 ，点击添加

阿里云中央仓库地址：

http://maven.aliyun.com/nexus/content/groups/public/

仓库服务 关系 /内容/组/公共/

文章知识点与官方知识档案匹配，可进一步学习相关知识

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结束语

如果本篇对您有帮助，请点个赞再加个关注，您的点赞是博主前进的动力！
If this article is helpful to you, please like and follow, your likes are the motivation for bloggers to move forward!

本篇详细的介绍了mysql-5.7.30的详细安装步骤，为mysql的主从复制教程提供了基础。
This article introduces the detailed installation steps of MySQL-5.7.30 in detail, and provides the basis for the master-slave replication tutorial of MySQL.

感兴趣的同学可以看看博主下一篇linux下搭建mysql主从复制。
Interested students can take a look at the blogger's next article Building MySQL Master-slave Copy under Linux.

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