# 安装MySQL8
# 安装MySQL软件包
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!
# 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 2020-05-13 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.
此时你并不能登陆mysql，虽然已经有了mysql的默认用户名。
grep "password" /var/log/mysqld.log
2021-07-18T22:51:37.815353Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: 9*CxxNRWHqmL
进入数据库：
mysql -u root -p
输入上面查询到的密码，但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+特殊符号(,/';:等),不然会因为mysql的密码强度策略而导致重置密码不成功。
当然这个策略是可以修改的.
# 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
# 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
最后用mysql命令登录
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
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
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