我尝试在 Almalinux v.8.7 安装 MySQL 服务器
$ sudo dnf install mysql
PostgreSQL 9.6 for RHEL/CentOS 8 - x86_64 757 B/s | 146 B 00:00
Errors during downloading metadata for repository 'pgdg96':
- Status code: 404 for
https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-8-
x86_64/repodata/repomd.xml (IP: 147.75.85.69)
Error: Failed to download metadata for repo 'pgdg96': Cannot download repomd.xml:
Cannot download repodata/repomd.xml: All mirrors were tried
检查 HREL 版本
$ hostnamectl
Static hostname: 89.162.205.92.host.secureserver.net
Icon name: computer-vm
Chassis: vm
Machine ID: 08e54cb75f274905b94df9482e6eb3ba
Boot ID: cf3ba98fd2d64b57acae1711a4dee431
Virtualization: kvm
Operating System: AlmaLinux 8.7 (Stone Smilodon)
CPE OS Name: cpe:/o:almalinux:almalinux:8::baseos
Kernel: Linux 4.18.0-425.19.2.el8_7.x86_64
Architecture: x86-64
在此之前我曾尝试过安装 PostgreSQL并因同样的错误而失败。
禁用 pgdg96
当我尝试时，sudo dnf --disable pgdg96回应是：
--enable, --set-enabled and --disable, --set-disabled must be
used with config-manager command.
当我尝试时，config-manager我也失败了：
$ sudo yum-config-manager --disablerepo pgdg96
sudo: yum-config-manager: command not found
$ sudo yum-config-manager --disable pgdg96
sudo: yum-config-manager: command not found
$ sudo config-manager --disable pgdg96
sudo: config-manager: command not found
$ sudo config-manager --disablerepo pgdg96
sudo: config-manager: command not found
但sudo dnf config-manager --disable pgdg96有效！