银河麒麟系统安装mysql数据库

1.1 准备材料

mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz

MySQL5.7下载地址

https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz

1.1 安装前准备工作

1、检查是否已经安装MySQL
[root@localhost ~]# rpm -qa | grep mysql

2、将查询出的包卸载掉

[root@localhost ~]# rpm -e --nodeps

3、将/usr/lib64/libLLVM-7.so也一并删除

[root@localhost ~]# rm -rf /usr/lib64/libLLVM-7.so

4、检查是否删除成功

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

5、查询残余文件夹

[root@localhost ~]# whereis mysql

6、删除残余文件

[root@localhost ~]# rm -rf /usr/bin/mysql /usr/share/man/man1/mysql.1.gz

7、验证删除结果

[root@localhost ~]# whereis mysql

8、检查MySQL用户组以及用户是否存在，若没有则创建

[root@localhost ~]# cat /etc/group | grep mysql

[root@localhost ~]# cat /etc/passwd |grep mysql

[root@localhost ~]# groupadd mysql

[root@localhost ~]# useradd -r -g mysql mysql

9、将mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz安装包上传到银河麒麟系统虚拟机中

10、开始安装MySQL数据库

#解压mysql数据库压缩包

[root@localhost 桌面]# tar -zxvf mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz

#复制解压后的mysql目录移动至/usr/local/mysql

[root@localhost 桌面]# cp -r mysql-5.7.28-linux-glibc2.12-x86_64 /usr/local/mysql

在目录下/usr/local/mysql/创建data目录

[root@localhost ~]# mkdir /usr/local/mysql/data

更改MySQL目录下所有的目录文件夹所属组和用户以及权限

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

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

修改MySQL的数据配置文件vim /etc/my.cnf ，修改完后内容如下

来使用vim打开该文件，然后按一下i进入INSERT更改模式，使用小键盘旁边的上下左右按键可以移动光标位置，移动到想到的位置进行正常的增删操作，在操作完毕后，按Ctrl+C结束INSERT模式，再输入:wq再按回车即可退出。

[mysqld]

datadir=/usr/local/mysql/data

basedir=/usr/local/mysql

socket=/usr/local/mysql/data/mysql.sock

user=mysql

port=3306

character-set-server=utf8

symbolic-links=0

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

[client]

port=3306

socket=/usr/local/mysql/data/mysql.sock

注意socket的值必须前后一致，否则会报错：Can’t connect to local MySQL server through socket的解决方法

解决办法：https://www.cnblogs.com/liunaixu/p/17122132.html

11、编译安装并初始化MySQL数据库，并记录初始化后末尾输出的默认密码

[root@localhost ~]# cd /usr/local/mysql/bin

读取密码

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

以上步骤执行完成后生产的临时密码，该数据库密码：ab)8xkZTi4XD

[root@localhost bin]# ./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql
2023-02-17T06:33:04.515456Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2023-02-17T06:33:05.303844Z 0 [Warning] InnoDB: New log files created, LSN=45790
2023-02-17T06:33:05.413152Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2023-02-17T06:33:05.486498Z 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: ef7ba16f-ae8c-11ed-877c-000c29cb2878.
2023-02-17T06:33:05.487709Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2023-02-17T06:33:05.947457Z 0 [Warning] CA certificate ca.pem is self signed.
2023-02-17T06:33:06.086861Z 1 [Note] A temporary password is generated for root@localhost: ab)8xkZTi4XD

12、添加开机自启并开启服务

[root@localhost bin]# cp -rf /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

[root@localhost bin]# chmod +x /etc/init.d/mysqld