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Error using Yum DNF on Centos 8.1 Failed to download metadata for repo 'AppStream'

Having great difficulty tracking down what is causing the below error when attempting to update any package from any repo. I have tested multiple repos by setting all others to disabled. I have cleaned all cache and removed any dnf yum cache files.

# dnf -v update
Loaded plugins: builddep, changelog, config-manager, copr, debug, debuginfo-install, download, generate_completion_cache, needs-restarting, playground, repoclosure, repodiff, repograph, repomanage, reposync
DNF version: 4.2.7
cachedir: /var/cache/dnf
repo: downloading from remote: AppStream
error: Curl error (28): Timeout was reached for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock [Resolving timed out after 30000 milliseconds] (http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock).
CentOS-8 - AppStream                                                                                                                                                     0.0  B/s |   0  B     00:30    
Cannot download 'http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock': Cannot prepare internal mirrorlist: Curl error (28): Timeout was reached for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock [Resolving timed out after 30000 milliseconds].
Failed to download metadata for repo 'AppStream'
Error: Failed to download metadata for repo 'AppStream'

Each time I attempt a dnf update, load average on the server goes thru the roof, up to 40x

curl can access the mirror site.

curl 'http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=stock'
http://ftp.tc.edu.tw/Linux/CentOS/8.2.2004/AppStream/x86_64/os/
http://mirror.horizon.vn/centos/8.2.2004/AppStream/x86_64/os/
http://ftp.jaist.ac.jp/pub/Linux/CentOS/8.2.2004/AppStream/x86_64/os/
http://centosg9.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://packet01.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://mirror.s8.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://centoso7.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://centosh9.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://centosc8.centos.org/centos/8.2.2004/AppStream/x86_64/os/
http://centosg7.centos.org/centos/8.2.2004/AppStream/x86_64/os/

I have also tried using baserurl in .repo, same error

I have also replaced the baseurl with one of the url’s returned by curl, same error

I have tried many suggestions such as yum/dnf error: Failed to download metadata for repo
and similar, none work for me.
Some articles point to bugs in the env vars for $releaseserver etc. I have also tried replacing with actual values. same error.

Internet connection obviously OK due to curl result.
No proxy used.
DNS OK

cat /etc/redhat-release
CentOS Linux release 8.1.1911 (Core)

uname -a
Linux xxxx 4.18.0-147.5.1.el8_1.x86_64 #1 SMP Wed Feb 5 02:00:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Any suggestions would be greatly appreciated.

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2

Answers


  1. 0

    For some weird reasons, After setting the nameserver in /etc/resolv.conf to 8.8.8.8 and a reboot fixed the problem for me.

    Also, I disabled the Dynamic memory for Hyper-V VM. DNF command is expecting a lot of memory.

    Please give it a try.

    Regards,
    Arockiasamy

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  2. 0

    The only thing that worked for me was to disable and remove the offending repo.

    sudo yum --disablerepo=epel* remove epel-release.noarch
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