标签：rest ever test try dns clean eterm work dns解析
在yum安装MariaDB时出现下面这个错误提示，然后着手排查，先检查了/etc/yum.repo.d/下的配置文件，没有错误。
failure: repodata/repomd.xml from mariadb: [Errno 256] No more mirrors to try. http://yum.mariadb.org/10.3/centos7-amd64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: yum.mariadb.org; 未知的错误"
我这个是云主机，刚想安装LNMP环境。我清理了yum缓存，重新生成缓存，结果也还没解决，还是一样显示上面错误。
然后，我又重新看了错误提示信息，看到下面字样，我就感觉是DNS解析问题了。
Trying other mirror.
查看 /etc/resolv.conf，显示为空，晕了，明明之前配置好了的，难怪yum出问题。然后修改为如下
[root@SERVER1 yum.repos.d]# cat /etc/resolv.conf # Generated by NetworkManager nameserver 223.5.5.5 nameserver 8.8.8.8
清理缓存，重新生成缓存，已正常，问题已经解决
[root@SERVER1 yum.repos.d]# yum clean all 已加载插件：fastestmirror, langpacks 正在清理软件源： base extras mariadb updates Cleaning up everything [root@SERVER1 yum.repos.d]# yum makecache 已加载插件：fastestmirror, langpacks base | 3.6 kB 00:00:00 extras | 3.4 kB 00:00:00 mariadb | 2.9 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/15): base/7/x86_64/group_gz | 166 kB 00:00:00 (2/15): base/7/x86_64/primary_db | 5.9 MB 00:00:00 (3/15): base/7/x86_64/filelists_db | 6.9 MB 00:00:00 (4/15): extras/7/x86_64/prestodelta | 33 kB 00:00:00 (5/15): extras/7/x86_64/primary_db | 125 kB 00:00:00 (6/15): extras/7/x86_64/other_db | 83 kB 00:00:01 (7/15): mariadb/primary_db | 50 kB 00:00:01 (8/15): updates/7/x86_64/filelists_db | 637 kB 00:00:00 (9/15): updates/7/x86_64/prestodelta | 57 kB 00:00:00 (10/15): updates/7/x86_64/primary_db | 1.0 MB 00:00:00 (11/15): updates/7/x86_64/other_db | 55 kB 00:00:00 (12/15): mariadb/other_db | 7.3 kB 00:00:01 (13/15): extras/7/x86_64/filelists_db | 444 kB 00:00:07 (14/15): mariadb/filelists_db | 206 kB 00:00:19 (15/15): base/7/x86_64/other_db | 2.5 MB 00:00:21 Determining fastest mirrors * base: 100.125.0.40 * extras: 100.125.0.40 * updates: 100.125.0.40 元数据缓存已建立
CentOS7.3yum安装MariaDB报错[Errno 256]
标签：rest ever test try dns clean eterm work dns解析
原文地址：https://www.cnblogs.com/blog-tim/p/10254402.html
