centos7停服之后官方yum源无法访问和docker修改镜像源【梧桐凰】

centos停服之后官方yum源无法访问报Could not resolve host: mirrorlist.centos.org; Unknown error解决方案1.下载新的CentOS-Base.repo文件到/etc/yum.repos.d/目录下选择 CentOS 版本2.执行如下命令此处选择华为云的镜像仓库wget-O/etc/yum.repos.d/CentOS-Base.repo https://mirrors.huaweicloud.com/repository/conf/CentOS-7-anon.repo或者curl-o/etc/yum.repos.d/CentOS-Base.repo https://mirrors.huaweicloud.com/repository/conf/CentOS-7-anon.repo3、执行yum clean all清除原有 yum 缓存4、执行yum makecache刷新缓存或者yum repolist all查看所有配置可以使用的文件会自动刷新缓存Docker Registry Mirror 配置创建或修改 /etc/docker/daemon.json:{registry-mirrors:[https://docker.registry.cyou,https://docker-cf.registry.cyou,https://mirror.iscas.ac.cn/,https://docker.rainbond.cc/]}重新启动服务【梧桐凰】sudosystemctl daemon-reloadsudosystemctl restartdocker2022年2月18日在CentOS 8上安装软件时遇到如下报错 Errors during downloading metadata for repository ‘appstream’: - Curl error (6): Couldn’t resolve host name for http://mirrorlist.centos.org/?release8archx86_64repoAppStreaminfrastock [Could not resolve host: mirrorlist.centos.org] 错误为仓库 ‘appstream’ 下载元数据失败 : Cannot prepare internal mirrorlist: Curl error (6): Couldn’t resolve host name for http://mirrorlist.centos.org/?release8archx86_64repoAppStreaminfrastock [Could not resolve host: mirrorlist.centos.org]解决网址为https://developer.aliyun.com/mirror/centos进入cd /etc/yum.repos.d/1.对原来的yum文件进行备份rename.repo.repo.bak/etc/yum.repos.d/*.repo2.像配置内容sed-is/mirrorlist/#mirrorlist/g/etc/yum.repos.d/CentOS-*sed-is|#baseurlhttp://mirror.centos.org|baseurlhttp://vault.centos.org|g/etc/yum.repos.d/CentOS-*3.下载源文件命令wget-O/etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo4…清除缓存和建立元数据yum clean allyum makecache原文链接https://blog.csdn.net/weixin_45612728/article/details/123070765yum源已经可以正常使用了问题最终得到解决CentOS 8 官方源 2021-12-31 后下线普通镜像里 /centos/8/… 会被删掉或 404。Vault 归档源必须用完整版本号❌ http://mirrors.163.com/centos-vault/8/BaseOS/x86_64/os/ ✅ http://mirrors.163.com/centos-vault/8.5.2111/BaseOS/x86_64/os/万事要备份cd/etc/yum.repos.d/mkdir-pbackupmv*.repo backup/直接换「清华源」最稳的国内 Vault把现有 repo 干掉重写rm-f/etc/yum.repos.d/CentOS-Vault.repocat/etc/yum.repos.d/CentOS-Vault.repoEOF [BaseOS] nameCentOS-8.5.2111 - BaseOS baseurlhttps://mirrors.tuna.tsinghua.edu.cn/centos-vault/8.5.2111/BaseOS/$basearch/os/ gpgcheck1 enabled1 gpgkeyfile:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial [AppStream] nameCentOS-8.5.2111 - AppStream baseurlhttps://mirrors.tuna.tsinghua.edu.cn/centos-vault/8.5.2111/AppStream/$basearch/os/ gpgcheck1 enabled1 gpgkeyfile:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial [extras] nameCentOS-8.5.2111 - Extras baseurlhttps://mirrors.tuna.tsinghua.edu.cn/centos-vault/8.5.2111/extras/$basearch/os/ gpgcheck1 enabled1 gpgkeyfile:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial EOFyum clean all yum makecache如果清华也抽风换中科大sed-is#mirs.tuna.tsinghua.edu.cn#mirrors.ustc.edu.cn#g/etc/yum.repos.d/CentOS-Vault.repo yum clean all yum makecache