centos问题----Errors during downloading metadata for repository ‘epel‘:

问题

[root@ecs]# yum install -y mysql57-community-release-el7-10.noarch.rpm
Extra Packages for Enterprise Linux 8 - x86_64                      171  B/s | 196  B     00:01    
Errors during downloading metadata for repository 'epel':
  - Status code: 404 for http://archives.fedoraproject.org/pub/archive/epel/8/Everything/x86_64/repodata/repomd.xml (IP: 38.145.60.23)
Error: Failed to download metadata for repo 'epel': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

解决

这个是源的问题，需要更新yum的源

1. 重命名原来的源

# 重命名原来的源
rename '.repo' '.repo.bak' /etc/yum.repos.d/*.repo

2. 下载新的repo文件

# 下载新的repo文件
wget https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo -O /etc/yum.repos.d/Centos-vault-8.5.2111.repo
wget https://mirrors.aliyun.com/repo/epel-archive-8.repo -O /etc/yum.repos.d/epel-archive-8.repo

3. 替换源地址

# 替换源地址
sed -i 's/mirrors.cloud.aliyuncs.com/mirrors.aliyun.com/g'  /etc/yum.repos.d/Centos-vault-8.5.2111.repo 
sed -i 's/mirrors.cloud.aliyuncs.com/mirrors.aliyun.com/g'  /etc/yum.repos.d/epel-archive-8.repo

4. 重新创建缓存

yum clean all 
yum makecache

5. 再次yum install 即可

[root@ecs]# yum install -y mysql57-community-release-el7-10.noarch.rpm

此针对ecs弹性云服务器处理方案