数据库安装之：centos7安装mysql5.7的详细记录和踩坑过程
今天使用centos7进行mysql5.7的安装，出现挫折，记录如下：
下载安装mysql
下载rpm安装包
wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
--2022-01-22 03:01:53-- http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
Resolving dev.mysql.com (dev.mysql.com)... 137.254.60.11
Connecting to dev.mysql.com (dev.mysql.com)|137.254.60.11|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm [following]
--2022-01-22 03:01:54-- https://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
Connecting to dev.mysql.com (dev.mysql.com)|137.254.60.11|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://repo.mysql.com//mysql57-community-release-el7-8.noarch.rpm [following]
--2022-01-22 03:01:55-- https://repo.mysql.com//mysql57-community-release-el7-8.noarch.rpm
Resolving repo.mysql.com (repo.mysql.com)... 23.36.253.13
Connecting to repo.mysql.com (repo.mysql.com)|23.36.253.13|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 9116 (8.9K) [application/x-redhat-package-manager]
Saving to: ‘mysql57-community-release-el7-8.noarch.rpm'100%[=========================================================================================================================================================================>] 9,116 --.-K/s in 0s
2022-01-22 03:01:55 (249 MB/s) - ‘mysql57-community-release-el7-8.noarch.rpm' saved [9116/9116]
安装
yum localinstall mysql57-community-release-el7-8.noarch.rpm
(py3) [root@localhost opt]# yum localinstall mysql57-community-release-el7-8.noarch.rpm
Loaded plugins: fastestmirror, langpacks
Examining mysql57-community-release-el7-8.noarch.rpm: mysql57-community-release-el7-8.noarch
Marking mysql57-community-release-el7-8.noarch.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package mysql57-community-release.noarch 0:el7-8 will be installed
--> Finished Dependency ResolutionDependencies Resolved
===================================================================================================================================================================================================================
Package Arch Version Repository Size
===================================================================================================================================================================================================================
Installing:
mysql57-community-release noarch el7-8 /mysql57-community-release-el7-8.noarch 8.2 kTransaction Summary
===================================================================================================================================================================================================================
Install 1 PackageTotal size: 8.2 k
Installed size: 8.2 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : mysql57-community-release-el7-8.noarch 1/1
Verifying : mysql57-community-release-el7-8.noarch 1/1Installed:
mysql57-community-release.noarch 0:el7-8Complete!
查看安装情况
安装server
yum -y install mysql-community-server(py3) [root@localhost opt]# yum -y install mysql-community-server
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 0:5.7.37-1.el7 will be installed
--> Processing Dependency: mysql-community-common(x86-64) = 5.7.37-1.el7 for package: mysql-community-server-5.7.37-1.el7.x86_64
--> Processing Dependency: mysql-community-client(x86-64) >= 5.7.9 for package: mysql-community-server-5.7.37-1.el7.x86_64
--> Running transaction check
---> Package mysql-community-client.x86_64 0:5.7.37-1.el7 will be installed
--> Processing Dependency: mysql-community-libs(x86-64) >= 5.7.9 for package: mysql-community-client-5.7.37-1.el7.x86_64
---> Package mysql-community-common.x86_64 0:5.7.37-1.el7 will be installed
--> Running transaction check
---> Package mysql-community-libs.x86_64 0:5.7.37-1.el7 will be installed
--> Finished Dependency ResolutionDependencies Resolved
===================================================================================================================================================================================================================
Package Arch Version Repository Size
===================================================================================================================================================================================================================
Installing:
mysql-community-server x86_64 5.7.37-1.el7 mysql57-community 174 M
Installing for dependencies:
mysql-community-client x86_64 5.7.37-1.el7 mysql57-community 25 M
mysql-community-common x86_64 5.7.37-1.el7 mysql57-community 311 k
mysql-community-libs x86_64 5.7.37-1.el7 mysql57-community 2.4 MTransaction Summary
===================================================================================================================================================================================================================
Install 1 Package (+3 Dependent packages)Total download size: 202 M
Installed size: 878 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/mysql57-community/packages/mysql-community-common-5.7.37-1.el7.x86_64.rpm: Header V4 RSA/SHA256 Signature, key ID 3a79bd29: NOKEY ] 0.0 B/s | 767 kB --:--:-- ETA
Public key for mysql-community-common-5.7.37-1.el7.x86_64.rpm is not installed
(1/4): mysql-community-common-5.7.37-1.el7.x86_64.rpm | 311 kB 00:00:00
(2/4): mysql-community-libs-5.7.37-1.el7.x86_64.rpm | 2.4 MB 00:00:04
(3/4): mysql-community-client-5.7.37-1.el7.x86_64.rpm | 25 MB 00:01:01
(4/4): mysql-community-server-5.7.37-1.el7.x86_64.rpm | 174 MB 00:03:40
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 917 kB/s | 202 MB 00:03:45
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 : mysql57-community-release-el7-8.noarch (@/mysql57-community-release-el7-8.noarch)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysqlPublic key for mysql-community-server-5.7.37-1.el7.x86_64.rpm is not installed
Failing package is: mysql-community-server-5.7.37-1.el7.x86_64
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql这里发现这个问题：
Public key for mysql-community-server-5.7.37-1.el7.x86_64.rpm is not installedFailing package is: mysql-community-server-5.7.37-1.el7.x86_64
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql备注：
由于MySQL在CentOS7中收费了，所以已经不支持MySQL了，取而代之在CentOS7内部集成了mariadb，而安装MySQL的话会和MariaDB的文件冲突。
如果安装的话，需要卸载MariaDB，另外也注意安装正确的安装包，以及安装顺序，建议参考我的另外一篇文章。
总结
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