Oracle Cloud

• https://cloud.oracle.com
• 상시 무료 인스턴스 2개 제공

feat

• 외부 네트워크 포트 열고, 인스턴스의 포트 열기 필요

  • sudo iptables -I INPUT -j ACCEPT

• SELinux 설정 필요

  • sudo setsebool -P httpd_can_network_connect 1
  • https://stackoverflow.com/a/24830777/510222

CentOS 8 Stream

• err

textCopy
[root@##### ~]# dnf update
CentOS-8 - AppStream 70 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

• solution

shCopy
sudo su
cd /etc/yum.repos.d/

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-*

• https://velog.io/@wangjh789/Error-Failed-to-download-metadata-for-repo-appstream-Cannot-prepare-internal-mirrorlist-No-URLs-in-mirrorlist