centos7上安装mysql8.0_error: package: mysql-community-server-8.0.36-1.el

1 yum安装

官网yum安装方法

1.1 获取MySQL8.0 YUM源

进入mysql官网获取RPM包下载地址，上面截图已经给出操作步骤

# 获取到下载链接：
https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm

1.2 下载和安装mysql源

下载mysql源
wget https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm
 
安装mysql源
yum -y localinstall mysql80-community-release-el7-1.noarch.rpm

1.3 在线安装MySQL

 yum -y install mysql-community-server

安装过程，安装时间比较长，由网速决定。

[root@wyl01 ~]# yum -y install mysql-community-server
Loaded plugins: fastestmirror, langpacks
Determining fastest mirrors
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
(1/2): mysql-connectors-community/x86_64/primary_db                                                          |  37 kB  00:00:00     
mysql-tools-community/x86_64/p FAILED                                          
http://repo.mysql.com/yum/mysql-tools-community/el/7/x86_64/repodata/5f5c8d66d01cebe1ed0fdd8710b411b96b9161c1-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to repo.mysql.com:80; Connection refused"
Trying other mirror.
mysql-tools-community/x86_64/p FAILED                                          
http://repo.mysql.com/yum/mysql-tools-community/el/7/x86_64/repodata/5f5c8d66d01cebe1ed0fdd8710b411b96b9161c1-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to repo.mysql.com:80; Connection refused"
Trying other mirror.
mysql-tools-community/x86_64/p FAILED                                          
http://repo.mysql.com/yum/mysql-tools-community/el/7/x86_64/repodata/5f5c8d66d01cebe1ed0fdd8710b411b96b9161c1-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to repo.mysql.com:80; Connection refused"
Trying other mirror.
(2/2): mysql-tools-community/x86_64/primary_db                                                               |  54 kB  00:00:00     
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 0:8.0.15-1.el7 will be installed
--> Processing Dependency: mysql-community-common(x86-64) = 8.0.15-1.el7 for package: mysql-community-server-8.0.15-1.el7.x86_64
--> Processing Dependency: mysql-community-client(x86-64) >= 8.0.0 for package: mysql-community-server-8.0.15-1.el7.x86_64
--> Running transaction check
---> Package mysql-community-client.x86_64 0:8.0.15-1.el7 will be installed
--> Processing Dependency: mysql-community-libs(x86-64) >= 8.0.0 for package: mysql-community-client-8.0.15-1.el7.x86_64
---> Package mysql-community-common.x86_64 0:8.0.15-1.el7 will be installed
--> Running transaction check
---> Package mariadb-libs.x86_64 1:5.5.52-1.el7 will be obsoleted
--> Processing Dependency: libmysqlclient.so.18()(64bit) for package: 2:postfix-2.10.1-6.el7.x86_64
--> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: 2:postfix-2.10.1-6.el7.x86_64
---> Package mysql-community-libs.x86_64 0:8.0.15-1.el7 will be obsoleting
--> Running transaction check
---> Package mysql-community-libs-compat.x86_64 0:8.0.15-1.el7 will be obsoleting
---> Package postfix.x86_64 2:2.10.1-6.el7 will be updated
---> Package postfix.x86_64 2:2.10.1-7.el7 will be an update
--> Finished Dependency Resolution
 
Dependencies Resolved
 
====================================================================================================================================
 Package                                   Arch                 Version                       Repository                       Size
====================================================================================================================================
Installing:
 mysql-community-libs                      x86_64               8.0.15-1.el7                  mysql80-community               2.2 M
     replacing  mariadb-libs.x86_64 1:5.5.52-1.el7
 mysql-community-libs-compat               x86_64               8.0.15-1.el7                  mysql80-community               2.1 M
     replacing  mariadb-libs.x86_64 1:5.5.52-1.el7
 mysql-community-server                    x86_64               8.0.15-1.el7                  mysql80-community               360 M
Installing for dependencies:
 mysql-community-client                    x86_64               8.0.15-1.el7                  mysql80-community                25 M
 mysql-community-common                    x86_64               8.0.15-1.el7                  mysql80-community               566 k
Updating for dependencies:
 postfix                                   x86_64               2:2.10.1-7.el7                base                            2.4 M
 
Transaction Summary
====================================================================================================================================
Install  3 Packages (+2 Dependent packages)
Upgrade             ( 1 Dependent package)
 
Total size: 393 M
Total download size: 391 M
Downloading packages:

1.4 启动mysql服务

#启动mysql服务
systemctl start mysqld
 
#查看进程
ps -ef |grep mysql
systemd+   3649      1  0 Feb16 ?        01:34:00 mysqld
root       4097   3649  0 Feb16 ?        00:00:00 [mysql] <defunct>
mysql     84152      1 11 15:15 ?        00:00:01 /usr/sbin/mysqld
 
 
#设置开机自启动
systemctl enable mysqld

1.5 修改root登陆密码，可远程连接

mysql安装完成之后，在/var/log/mysqld.log文件中给root生成了一个临时的默认密码，用grep命令搜一下。

[root@wyl01 local]# grep -R "password" /var/log/mysqld.log 
2019-02-27T07:15:07.717147Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: h80yjbjIjL*y

进入mysql服务后，我们查看数据库操作，发现下面的错误信息

[root@wyl01 ~]# mysql -uroot -ph80yjbjIjL*y
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.15
 
Copyright (c) 2000, 2019, 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;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> 

提示我们需要先修改密码，这里的修改密码方式和之前的版本不同，密码的长度和密码的要求也不一样，这里至少包含大小写字母数字和特殊字符。

alter user 'root'@'localhost' identified by 'QWer12#$';

修改完密码后，我们的本地远程访问还是不行的，我们查看一下原因

所以我们要将host=‘localhost’改成‘%’

update mysql.user set host='%' where user='root';
flush privileges;

至此，我们mysql8.0版本安装结束。

2 二进制包安装

2.1 下载安装包

下载地址

2.2 安装方法和mysql5.7安装方法一样

mysql5.7安装步骤