CentOS7.8安装mysql 8.0.20的教程详解- Starterknow

一、安装mysql软件

下载并安装MySQL官方的 Yum Repository,Mysql版本8.0.20

wget -i -c

http://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm下载后直接yum安装

yum -y install mysql80-community-release-el7-3.noarch.rpm安装MySQL服务器

yum -y install mysql-community-server

[root@CentOS Linux]# yum -y install mysql-community-server

Loaded plugins: fastestmirror, langpacks

Loading mirror speeds from cached hostfile

* base: mirror.lzu.edu.cn

* extras: mirror.lzu.edu.cn

* updates: mirror.lzu.edu.cn

mysql-connectors-community          | 2.5 kB 00:00:00

mysql-tools-community          | 2.5 kB 00:00:00

mysql80-community             | 2.5 kB 00:00:00

(1/3): mysql-connectors-community/x86_64/primary_db    | 57 kB 00:00:00

mysql-tools-community/x86_64/p FAILED          B 00:51:07 ETA

http://repo.mysql.com/yum/mysql-tools-community/el/7/x86_64/repodata/12bd1e8730cd532791529877bf5e7babbbb02879-primary.sqlite.bz2: [Errno 12] Timeout on http://repo.mysql.com/yum/mysql-tools-community/el/7/x86_64/repodata/12bd1e8730cd532791529877bf5e7babbbb02879-primary.sqlite.bz2: (28, ‘Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds’)

Trying other mirror.

(2/3): mysql-tools-community/x86_64/primary_db    | 72 kB 00:00:00

mysql80-community/x86_64/prima FAILED          B 00:00:15 ETA

http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/repodata/833c637b3989c2dd5a079a045177d2f1c96e9c1e-primary.sqlite.bz2: [Errno 12] Timeout on http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/repodata/833c637b3989c2dd5a079a045177d2f1c96e9c1e-primary.sqlite.bz2: (28, ‘Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds’)

Trying other mirror.

(3/3): mysql80-community/x86_64/primary_db       | 107 kB 00:00:00

Resolving Dependencies

–> Running transaction check

—> Package mysql-community-server.x86_64 0:8.0.20-1.el7 will be installed

–> Processing Dependency: mysql-community-common(x86-64) = 8.0.20-1.el7 for package: mysql-community-server-8.0.20-1.el7.x86_64

–> Processing Dependency: mysql-community-client(x86-64) >= 8.0.11 for package: mysql-community-server-8.0.20-1.el7.x86_64

–> Running transaction check

—> Package mysql-community-client.x86_64 0:8.0.20-1.el7 will be installed

–> Processing Dependency: mysql-community-libs(x86-64) >= 8.0.11 for package: mysql-community-client-8.0.20-1.el7.x86_64

—> Package mysql-community-common.x86_64 0:8.0.20-1.el7 will be installed

–> Running transaction check

—> Package mariadb-libs.x86_64 1:5.5.65-1.el7 will be obsoleted

–> Processing Dependency: libmysqlclient.so.18()(64bit) for package: 2:postfix-2.10.1-9.el7.x86_64

–> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: 2:postfix-2.10.1-9.el7.x86_64

—> Package mysql-community-libs.x86_64 0:8.0.20-1.el7 will be obsoleting

–> Running transaction check

—> Package mysql-community-libs-compat.x86_64 0:8.0.20-1.el7 will be obsoleting

–> Finished Dependency Resolution

Dependencies Resolved

===============================================================================================

Package    Arch  Version Repository Size

===============================================================================================

Installing:

mysql-community-libs x86_64  8.0.20-1.el7  mysql80-community  4.5 M

  replacing mariadb-libs.x86_64 1:5.5.65-1.el7

mysql-community-libs-compat  x86_64  8.0.20-1.el7  mysql80-community  1.2 M

  replacing mariadb-libs.x86_64 1:5.5.65-1.el7

mysql-community-server x86_64  8.0.20-1.el7  mysql80-community  488 M

Installing for dependencies:

mysql-community-client x86_64  8.0.20-1.el7  mysql80-community  47 M

mysql-community-common x86_64  8.0.20-1.el7  mysql80-community  609 k

Transaction Summary

===============================================================================================

Install 3 Packages (+2 Dependent packages)

Total download size: 541 M

Is this ok [y/d/N]: y

Downloading packages:

warning: /var/cache/yum/x86_64/7/mysql80-community/packages/mysql-community-common-8.0.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Public key for mysql-community-common-8.0.20-1.el7.x86_64.rpm is not installed

(1/5): mysql-community-common-8.0.20-1.el7.x86_64.rpm    | 609 kB 00:00:00

(2/5): mysql-community-libs-8.0.20-1.el7.x86_64.rpm    | 4.5 MB 00:00:13

(3/5): mysql-community-libs-compat-8.0.20-1.el7.x86_64.rpm | 1.2 MB 00:00:04

mysql-community-client-8.0.20- FAILED          B 00:22:23 ETA

http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/mysql-community-client-8.0.20-1.el7.x86_64.rpm: [Errno 12] Timeout on http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/mysql-community-client-8.0.20-1.el7.x86_64.rpm: (28, ‘Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds’)

Trying other mirror.

(4/5): mysql-community-server-8.0.20-1.el7.x86_64.rpm    | 488 MB 00:22:18

(5/5): mysql-community-client-8.0.20-1.el7.x86_64.rpm    | 47 MB 00:01:57

———————————————————————————————–

Total             376 kB/s | 541 MB 00:24:34

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

Importing GPG key 0x5072E1F5:

Userid  : “MySQL Release Engineering <mysql-build@oss.oracle.com>”

Fingerprint: a4a9 4068 76fc bd3c 4567 70c8 8c71 8d3b 5072 e1f5

Package : mysql80-community-release-el7-3.noarch (installed)

From  : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

Is this ok [y/N]: y

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

Warning: RPMDB altered outside of yum.

Installing : mysql-community-common-8.0.20-1.el7.x86_64       1/6

Installing : mysql-community-libs-8.0.20-1.el7.x86_64       2/6

Installing : mysql-community-client-8.0.20-1.el7.x86_64       3/6

Installing : mysql-community-server-8.0.20-1.el7.x86_64       4/6

Installing : mysql-community-libs-compat-8.0.20-1.el7.x86_64       5/6

Erasing : 1:mariadb-libs-5.5.65-1.el7.x86_64          6/6

Verifying : mysql-community-libs-compat-8.0.20-1.el7.x86_64       1/6

Verifying : mysql-community-common-8.0.20-1.el7.x86_64       2/6

Verifying : mysql-community-server-8.0.20-1.el7.x86_64       3/6

Verifying : mysql-community-client-8.0.20-1.el7.x86_64       4/6

Verifying : mysql-community-libs-8.0.20-1.el7.x86_64       5/6

Verifying : 1:mariadb-libs-5.5.65-1.el7.x86_64          6/6

Installed:

mysql-community-libs.x86_64 0:8.0.20-1.el7

mysql-community-libs-compat.x86_64 0:8.0.20-1.el7

mysql-community-server.x86_64 0:8.0.20-1.el7

Dependency Installed:

mysql-community-client.x86_64 0:8.0.20-1.el7 mysql-community-common.x86_64 0:8.0.20-1.el7

Replaced:

mariadb-libs.x86_64 1:5.5.65-1.el7

Complete!安装完成后就会覆盖掉之前的mariadb

二、配置Mysql数据库

启动MySQL

systemctl start mysqld.service查看MySQL运行状态

systemctl status mysqld.service

● mysqld.service – MySQL Server

Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)

Active: active (running) since Wed 2022-05-13 23:57:41 HKT; 18s ago

Docs: man:mysqld(8)

http://dev.mysql.com/doc/refman/en/using-systemd.html

Process: 9563 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)

Main PID: 9649 (mysqld)

Status: “Server is operational”

Tasks: 39

CGroup: /system.slice/mysqld.service

└─9649 /usr/sbin/mysqld

May 13 23:57:34 CentOS.highning.com systemd[1]: Starting MySQL Server…

May 13 23:57:41 CentOS.highning.com systemd[1]: Started MySQL Server.找出root初始密码

grep “password” /var/log/mysqld.log

2022-05-13T15:57:37.815353Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: 9*CxxNRWHqmL

进入数据库：

mysql -uroot -p输入密码（密码是上面查询到的 ,/wsw6gif;eH ），此时不能操作数据库，必须修改密码之后才能操作数据库

ALTER USER ‘root’@’localhost’ IDENTIFIED BY ‘new password’;其中‘new password’替换成你要设置的密码，注意:密码设置必须要大小写字母数字和特殊符号（,/’;:等）,不然不能配置成功

三、开启mysql的远程访问

执行以下命令开启远程访问限制（注意：下面命令开启的IP是 192.168.0.1，如要开启所有的，用%代替IP）,mysql8.0和以前的版本不一样，不能用原来的命令同时授权和创建用户：

create user ‘root’@’192.168.0.1’ identified by ‘password’;

grant all privileges on *.* to ‘root’@’192.168.0.1’ with grant option;再输入以下两行命令

flush privileges;

exit
四、为firewalld添加开放端口

添加mysql端口3306和Tomcat端口8080

firewall-cmd –zone=public –add-port=3306/tcp –permanent

firewall-cmd –zone=public –add-port=8080/tcp –permanent重新载入

firewall-cmd –reload最后在windows下用mysql命令登录

Microsoft Windows [版本 10.0.18363.778]

(c) 2022 Microsoft Corporation。保留所有权利。

C:\Users\highning>mysql -h 192.168.88.88 -P 3306 -u root -p

Enter password: ********

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 10

Server version: 8.0.20 MySQL Community Server – GPL

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.

mysql>修改密码安全策略，改为LOW，密码长度最小6位

mysql> set global validate_password.policy=LOW;

Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password.length=6;

Query OK, 0 rows affected (0.00 sec)

mysql> SHOW VARIABLЕS LIKE ‘validate_password%’;

+————————————–+——-+

| Variable_name    | Value |

+————————————–+——-+

| validate_password.check_user_name | ON |

| validate_password.dictionary_file |  |

| validate_password.length | 6  |

| validate_password.mixed_case_count | 1  |

| validate_password.number_count  | 1  |

| validate_password.policy | LOW |

| validate_password.special_char_count | 1  |

+————————————–+——-+

7 rows in set (0.00 sec)关于 mysql 密码策略相关参数；

1）、validate_password.length  固定密码的总长度；

2）、validate_password_dictionary_file 指定密码验证的文件路径；

3）、validate_password_mixed_case_count  整个密码中至少要包含大/小写字母的总个数；

4）、validate_password_number_count  整个密码中至少要包含阿拉伯数字的个数；

5）、validate_password.policy 指定密码的强度验证等级，默认为 MEDIUM；

6）、validate_password_special_char_count 整个密码中至少要包含特殊字符的个数；

关于 validate_password.policy 的取值：

LOW：只验证长度；

MEDIUM：验证长度、数字、大小写、特殊字符；

STRONG：验证长度、数字、大小写、特殊字符、字典文件；

总结

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原创文章，作者：starterknow，如若转载，请注明出处：https://www.starterknow.com/116301.html

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