Centos8 Error: Failed to download metadata for repo ‘AppStream‘ 解决方式

[MarbloroX]

切换目录

• cd /etc/yum.repos.d/

然后在此目录下：

• sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
• sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
• yum update -y
• wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
• yum clean all
• yum makecache

很关键的一步

• rm CentOS-Linux-*

---

具体细节:
**1. cd /etc/yum.repos.d/

2. [yum.repos.d]# sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*

3. [yum.repos.d]# sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

4. [yum.repos.d]# yum update -y**

Complete!

5. [yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 47.246.24.228, 47.246.24.230, 47.246.24.226, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|47.246.24.228|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2495 (2.4K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/CentOS-Base.repo’
/etc/yum.repos.d/Cent 100%[=========================>] 2.44K --.-KB/s in 0.002s
2022-05-13 16:06:36 (1.57 MB/s) - ‘/etc/yum.repos.d/CentOS-Base.repo’ saved [2495/2495]

6 . [yum.repos.d]#yum clean all

Repository extras is listed more than once in the configuration
33 files removed

7.[yum.repos.d]#yum makecache

Repository extras is listed more than once in the configuration
CentOS-8.5.2111 - Base - mirrors.aliyun.com 1.4 MB/s | 4.6 MB 00:03
CentOS-8.5.2111 - Extras - mirrors.aliyun.com 9.8 kB/s | 10 kB 00:01
CentOS-8.5.2111 - AppStream - mirrors.aliyun.com 1.1 MB/s | 8.4 MB 00:07
CentOS Linux 8 - AppStream 269 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

8. [yum.repos.d]# rm CentOS-Linux-*

删除目录下CentOS-Linux- 开头的文件
全部 Y