Centos 8 : Failed to download metadata for repo 'appstream' Introducción Algunasveces con los cambios que existen en el ecosistema linux, como pueden ser los movimientos derivados de las actividades de Redhat, y en consecuencia sus derivados más directo Fedora y Centos, te saltan problemas esta vez y gracias a Proyectoa no perdi mucho el tiempo. ¡¡Gracias!! Error El error es simple, quieres actualiza o instalar algo y zas. CentOS Linux 8 – AppStream Error: Failed to download metadata for repo ‘appstream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist yum -y install elink CentOS Linux 8 - AppStream 163 B/s | 38 B 00:00 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist Solución Comentar los mirrorlist sed -i -e "s|mirrorlist=|#mirrorlist=|g" /etc/yum.repos.d/CentOS-* Modificar el baseurl Modificaremos el baseurl de todos los ficheros del yum.repos.d sed -i -e "s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g" /etc/yum.repos.d/CentOS-* Limpieza de caches y actualización del repositorio [root@monitor01 ~] dnf clean all 91 files removed [root@monitor01 ~]# dnf swap centos-linux-repos centos-stream-repos CentOS Linux 8 - AppStream 2.2 MB/s | 8.4 MB 00:03 CentOS Linux 8 - BaseOS 2.5 MB/s | 4.6 MB 00:01 CentOS Linux 8 - Extras 70 kB/s | 10 kB 00:00 MariaDB 516 kB/s | 601 kB 00:01 ELRepo.org Community Enterprise Linux Repository - el8 321 kB/s | 171 kB 00:00 Extra Packages for Enterprise Linux 8 - x86_64 3.1 MB/s | 11 MB 00:03 Extra Packages for Enterprise Linux Modular 8 - x86_64 1.1 MB/s | 1.0 MB 00:00 Remi's Modular repository for Enterprise Linux 8 - x86_64 1.3 MB/s | 973 kB 00:00 Safe Remi's RPM repository for Enterprise Linux 8 - x86_64 2.4 MB/s | 2.1 MB 00:00 Webmin Distribution Neutral 3.2 MB/s | 18 MB 00:05 Zabbix Official Repository - x86_64 212 kB/s | 240 kB 00:01 Zabbix Official Repository non-supported - x86_64 1.9 kB/s | 1.2 kB 00:00 Dependencies resolved. ============================================================================================================================================================================================= Package Architecture Version Repository Size ============================================================================================================================================================================================= Installing: centos-stream-repos noarch 8-3.el8 extras 19 k Removing: centos-linux-repos noarch 8-3.el8 @baseos 26 k Transaction Summary ============================================================================================================================================================================================= Install 1 Package Remove 1 Package Total download size: 19 k Is this ok [y/N]: y Downloading Packages: centos-stream-repos-8-3.el8.noarch.rpm 227 kB/s | 19 kB 00:00 --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 216 kB/s | 19 kB 00:00 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : centos-stream-repos-8-3.el8.noarch 1/2 Erasing : centos-linux-repos-8-3.el8.noarch 2/2 warning: /etc/yum.repos.d/CentOS-Linux-PowerTools.repo saved as /etc/yum.repos.d/CentOS-Linux-PowerTools.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-Plus.repo saved as /etc/yum.repos.d/CentOS-Linux-Plus.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-HighAvailability.repo saved as /etc/yum.repos.d/CentOS-Linux-HighAvailability.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-FastTrack.repo saved as /etc/yum.repos.d/CentOS-Linux-FastTrack.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-Extras.repo saved as /etc/yum.repos.d/CentOS-Linux-Extras.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-Devel.repo saved as /etc/yum.repos.d/CentOS-Linux-Devel.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo saved as /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-BaseOS.repo saved as /etc/yum.repos.d/CentOS-Linux-BaseOS.repo.rpmsave warning: /etc/yum.repos.d/CentOS-Linux-AppStream.repo saved as /etc/yum.repos.d/CentOS-Linux-AppStream.repo.rpmsave Verifying : centos-stream-repos-8-3.el8.noarch 1/2 Verifying : centos-linux-repos-8-3.el8.noarch 2/2 Installed: centos-stream-repos-8-3.el8.noarch Removed: centos-linux-repos-8-3.el8.noarch Complete! 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