虚拟机安装MySQL

虚拟机安装mysql1，检查是否安装mariadb，若安装则卸载执行检查命令:rpm -qa | grep mariadbrpm -qa | grep mariadb-server执行卸载命令：rpm -e --nodeps mariadb-libs-5.5.60-1.el7_5.x86_64（注意：mariadb-libs-5.5.60-1.el7_5.x86_64 版本不一,卸载自己检查出来的

人送外号：小码哥

3493人浏览 · 2022-02-18 11:11:22

人送外号：小码哥 · 2022-02-18 11:11:22 发布

虚拟机安装mysql

1，检查是否安装mariadb，若安装则卸载

执行检查命令:
rpm -qa | grep mariadb
rpm -qa | grep mariadb-server
执行卸载命令：
rpm -e --nodeps mariadb-libs-5.5.60-1.el7_5.x86_64  （注意：mariadb-libs-5.5.60-1.el7_5.x86_64 版本不一,卸载自己检查出来的版本）

2，检查是否有mysql

 执行命令：whereis mysql
 如果有执行命令：rm -rf 对应目录   （比如：rm -rf /usr/local/mysql）

3，检查Mysql用户组和用户是否存在

执行命令：cat /etc/group | grep mysql
执行命令：cat /etc/passwd |grep mysql
如果没有则创建：
执行命令：groupadd mysql
执行命令：useradd -r -g mysql mysql

4，上传mysql 安装包

可以通过ftp 上传：mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz
解压：tar -zxvf mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz
重命名并放到指定位置：mv mysql-5.7.34-linux-glibc2.12-x86_64 /usr/local/mysql

5，更改mysql目录下所有的目录及文件夹所属的用户组和用户，以及权限

[root@localhost local]# chown -R mysql:mysql mysql
[root@localhost local]# ls -al
总用量 0
drwxr-xr-x. 13 root  root  144 2月  18 09:25 .
drwxr-xr-x. 13 root  root  155 2月  15 19:44 ..
drwxr-xr-x.  2 root  root    6 4月  11 2018 bin
drwxr-xr-x.  2 root  root    6 4月  11 2018 etc
drwxr-xr-x.  2 root  root    6 4月  11 2018 games
drwxr-xr-x.  2 root  root    6 4月  11 2018 include
drwxr-xr-x.  2 root  root    6 4月  11 2018 lib
drwxr-xr-x.  2 root  root    6 4月  11 2018 lib64
drwxr-xr-x.  2 root  root    6 4月  11 2018 libexec
drwxr-xr-x.  9 mysql mysql 129 2月  18 09:22 mysql
drwxr-xr-x.  2 root  root    6 4月  11 2018 sbin
drwxr-xr-x.  5 root  root   49 2月  15 19:44 share
drwxr-xr-x.  2 root  root    6 4月  11 2018 src

6，初始化mysql

初始化之前先进入cd /usr/local/mysql/bin，否则会报错

[root@localhost bin]# ./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql
2022-02-18T01:38:53.455969Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-02-18T01:38:53.716479Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-02-18T01:38:53.753340Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-02-18T01:38:53.812119Z 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: 87e6df60-905b-11ec-a7fe-000c29db2cdf.
2022-02-18T01:38:53.818241Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-02-18T01:38:54.203509Z 0 [Warning] CA certificate ca.pem is self signed.
2022-02-18T01:38:54.336357Z 1 [Note] A temporary password is generated for root@localhost: 9y(alySpm;Ew
途中 9y(alySpm;Ew 为mysql管理员临时登录密码，请先做保存

7，启动mysql服务

[root@localhost /]# /usr/local/mysql/support-files/mysql.server start
Starting MySQL.Logging to '/usr/local/mysql/data/localhost.localdomain.err'.
 SUCCESS!

8，添加软连接，并重启mysql服务

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

9，登录mysql，修改密码

[root@localhost /]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.34

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

修改密码

mysql> set password for root@localhost = password('123456');
Query OK, 0 rows affected, 1 warning (0.04 sec)

10，开放远程连接

mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> update user set user.Host='%' where user.User='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)

mysql> exit