数据库依赖插件openssl-devel ；下载不了

Question

mysql数据安装包；解压后；使用下载命令：yum install openssl-devel；下载 openssl-devel 插件；下载不了怎么处理？
显示以下错误：
[root@fj02 mysql-8.0.26]# yum install openssl-devel
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
12: Timeout on http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock: (28, 'Resolving timed out after 30556 milliseconds')

One of the configured repositories failed (未知),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:

 1. Contact the upstream for the repository and get them to fix the problem.

 2. Reconfigure the baseurl/etc. for the repository, to point to a working
    upstream. This is most often useful if you are using a newer
    distribution release than is supported by the repository (and the
    packages for the previous distribution release still work).

 3. Run the command with the repository temporarily disabled
        yum --disablerepo=<repoid> ...

 4. Disable the repository permanently, so yum won't use it by default. Yum
    will then just ignore the repository until you permanently enable it
    again or use --enablerepo for temporary usage:

        yum-config-manager --disable <repoid>
    or
        subscription-manager repos --disable=<repoid>

 5. Configure the failing repository to be skipped, if it is unavailable.
    Note that yum will try to contact the repo. when it runs most commands,
    so will have to try and fail each time (and thus. yum will be be much
    slower). If it is a very temporary problem though, this is often a nice
    compromise:

        yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true

Cannot find a valid baseurl for repo: base/7/x86_64

Answer 1

该回答引用GPTᴼᴾᴱᴺᴬᴵ
这个问题可能是由于网络问题导致的，建议先检查一下网络连接是否正常，然后再尝试运行以下命令，刷新yum缓存并更新yum源列表：

yum clean all
yum makecache

如果还是无法下载openssl-devel插件，可以尝试更换其他可用的yum源，或者手动下载openssl-devel插件安装包并手动安装。

以下是手动安装openssl-devel插件的方法：

1.从官方网站下载openssl-devel插件安装包，如：

wget https://www.openssl.org/source/openssl-1.1.1l.tar.gz

2.解压安装包：

tar -xzvf openssl-1.1.1l.tar.gz

3.进入解压后的目录：

cd openssl-1.1.1l

4.编译并安装openssl-devel插件：

./config
make
make install

5.安装完毕后，重新运行mysql安装包，并尝试安装openssl-devel插件。