完美解决CentOS8 yum安装AppStream报错，更新yum后无法makecache的问题
CentOS 8 yum安装软件时，提示无法从AppStream下载
[root@C8-3 ~]# yum -y install httpd mariadb-server mariadb php php-mysql Repository AppStream is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository PowerTools is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Repository fasttrack is listed more than once in the configuration CentOS-8 - AppStream 0.0 B/s | 0 B 00:08 Failed to download metadata for repo 'AppStream' Error: Failed to download metadata for repo 'AppStream'
更换国内yum源
腾云yum源： CentOS
# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup.3 # wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos8_base.repo
清理之前的yum缓存
# yum clean all
建立新的缓存
# yum makecache
解决makecahe报错
centos8会出现以下报错
CentOS-8 - AppStream 0.0 B/s | 0 B 00:04 Failed to download metadata for repo 'AppStream' Error: Failed to download metadata for repo 'AppStream'
解决办法
将CentOS-AppStream.repo文件中的链接更新
# vim /etc/yum.repos.d/CentOS-AppStream.repo
注释掉原有内容，并插入新内容
#这一段注释掉 #[AppStream] #name=CentOS-$releasever - AppStream #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra #baseurl=http://mirror.centos.org/$contentdir/$releasever/AppStream/$basearch/os/ #mirrorlist=http://mirror.centos.org/$contentdir/$releasever/AppStream/$basearch/os/ #gpgcheck=1 #enabled=1 #pgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial#改为下面这段 [AppStream] name=Qcloud centos AppStream - $basearch baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/AppStream/$basearch/os/ enabled=0 gpgcheck=1 gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-Official
重新运行 # yum makecache
# yum makecache
