[Errno256]これ以上ミラーを試す必要はありません。間違った解決方法

No More Mirrors Try

centOS 7システムでFTPサーバーを構築する場合、インストールコマンドの最初のステップを実行すると、次のエラーが報告されます。

[root@xxxxx ~]# yum -y install vsftpd Loaded plugin: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.zju.edu.cn * extras: mirrors.zju.edu.cn * updates: mirrors.zju.edu.cn Resolving dependencies --> Checking the transaction ---> The package vsftpd.x86_64.0.3.0.2-22.el7 will be installed --> Solve the completion of dependencies Dependency resolution ================================================================================ Package architecture version source size ================================================================================ Installing: vsftpd x86_64 3.0.2-22.el7 base 169 k Transaction summary ================================================================================ Install 1 package Total downloads: 169 k Installation size: 348 k Downloading packages: vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.cqu.edu.cn/CentOS/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.cqu.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.shu.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.shu.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.aliyun.com Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirror.bit.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirror.bit.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.neusoft.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.neusoft.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.tuna.tsinghua.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.tuna.tsinghua.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.nwsuaf.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.nwsuaf.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.zju.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.zju.edu.cn Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirrors.sohu.com/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirrors.sohu.com Unknown error' Try another image. vsftpd-3.0.2-22.el7.x86_64.rpm FAILED http://mirror.lzu.edu.cn/centos/7.4.1708/os/x86_64/Packages/vsftpd-3.0.2-22.el7.x86_64.rpm: [Errno 14] curl#6 - 'Could not resolve host: mirror.lzu.edu.cn Unknown error' Try another image. Error downloading packages: vsftpd-3.0.2-22.el7.x86_64: [Errno 256] No more mirrors to try. [root@xxxxx ~]#

解決：

1、yum clean all
2、yum makecache

[root@xxxxx ~]# yum clean all Loaded plugin: fastestmirror Cleaning up software source: base extras updates Cleaning up everything [root@xxxxx ~]# yum makecache Loaded plugin: fastestmirror base | 3.6 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 (1/12): base/7/x86_64/group_gz | 166 kB 00:00 (2/12): extras/7/x86_64/filelists_db | 603 kB 00:02 (3/12): extras/7/x86_64/prestodelta | 100 kB 00:02 (4/12): extras/7/x86_64/primary_db | 205 kB 00:00 (5/12): extras/7/x86_64/other_db | 126 kB 00:00 (6/12): base/7/x86_64/filelists_db | 6.9 MB 00:07 (7/12): updates/7/x86_64/filelists_db | 3.4 MB 00:05 (8/12): updates/7/x86_64/other_db | 578 kB 00:02 (9/12): base/7/x86_64/primary_db | 5.9 MB 00:12 (10/12): updates/7/x86_64/primary_db | 6.0 MB 00:05 (11/12): base/7/x86_64/other_db | 2.5 MB 00:15 updates/7/x86_64/prestodelta FAILED http://mirrors.njupt.edu.cn/centos/7.5.1804/updates/x86_64/repodata/8ee07a5e1fde5231fed8ce55547405923af529a0902e57aeee1676035ae7a367-prestodelta.xml.gz: [Errno 12] Timeout on http://10.10.254.10/cache/2/02/mirrors.njupt.edu.cn/a8bc5955244fcfe9599025498ceada44/8ee07a5e1fde5231fed8ce55547405923af529a0902e57aeee1676035ae7a367-prestodelta.xml.gz: (28, 'Connection timed out after 31022 milliseconds') Try another image. (12/12): updates/7/x86_64/prestodelta | 679 kB 00:00 Determining fastest mirrors * base: mirrors.nwsuaf.edu.cn * extras: centos.ustc.edu.cn * updates: mirror.lzu.edu.cn Metadata cache has been created

3.終了したら、yumにアップグレードできます[オプション]。

yum-yアップデート

次に、それを再インストールしてOK。