Temporary failure in name resolution

我会带着你远行 2022-08-07 05:59 4阅读 0赞

最近在使用yum方式安装perl-DBD-MySQL时碰到了Temporary failure in name resolution，Trying other mirror。即命名解析失败，尝试使用其它镜像。由于本机为最近安装的新服务器，下面是这个问题的现象描述及处理过程。  
  
1、故障现象  
\#\#\#当前环境  
\[root@GZDB ~\]\# cat /etc/issue  
CentOS release 5.11 (Final)  
Kernel \\r on an \\m  
  
\[root@GZDB ~\]\# yum install perl-DBD-MySQL  
              ..............  
http://mirrors.pubyun.com/centos/5.11/os/x86\_64/CentOS/mysql-5.0.95-5.el5\_9.x86\_64.rpm:  
    \[Errno 4\] IOError: <urlopen error (-3, 'Temporary failure in name resolution')> Trying other mirror.  
http://mirrors.sina.cn/centos/5.11/os/x86\_64/CentOS/mysql-5.0.95-5.el5\_9.x86\_64.rpm:  
    \[Errno 4\] IOError: <urlopen error (-3, 'Temporary failure in name resolution')> Trying other mirror.  
  
Error Downloading Packages:  
  mysql-5.0.95-5.el5\_9.x86\_64: failure:  
      CentOS/mysql-5.0.95-5.el5\_9.x86\_64.rpm from base: \[Errno 256\] No more mirrors to try.  
  perl-DBI-1.52-2.el5.x86\_64: failure:  
      CentOS/perl-DBI-1.52-2.el5.x86\_64.rpm from base: \[Errno 256\] No more mirrors to try.  
  perl-DBD-MySQL-3.0007-2.el5.x86\_64: failure:  
      CentOS/perl-DBD-MySQL-3.0007-2.el5.x86\_64.rpm from base: \[Errno 256\] No more mirrors to try.  
  
\#\#\#尝试ping百度，结果提示未知的主机  
\[root@GZDB yum.repos.d\]\# ping www.baidu.com  
ping: unknown host www.baidu.com  
\[root@GZDB yum.repos.d\]\# ping www.baidu.com  
ping: unknown host www.baidu.com  
  
2、故障解决  
\#\#\#结合上面的错误提示及无法ping通百度，应该是dns解析未配置  
\[root@GZDB yum.repos.d\]\# more /etc/resolv.conf  \#\#\#未配置dns解析  
  
\#\#\#添加dns解析  
\[root@GZDB yum.repos.d\]\# echo "  
> nameserver 121.14.37.62  
> nameserver 203.196.0.6">>/etc/resolv.conf  
  
\[root@GZDB yum.repos.d\]\# ping www.baidu.com  
PING www.a.shifen.com (119.75.217.109) 56(84) bytes of data.  
64 bytes from 119.75.217.109: icmp\_seq=1 ttl=52 time=38.7 ms  
64 bytes from 119.75.217.109: icmp\_seq=2 ttl=52 time=38.8 ms  
64 bytes from 119.75.217.109: icmp\_seq=3 ttl=52 time=38.7 ms  
\--- www.a.shifen.com ping statistics ---  
3 packets transmitted, 3 received, 0% packet loss, time 6078ms  
rtt min/avg/max/mdev = 38.711/38.742/38.801/0.165 ms  
  
\#\#\#再次yum perl-DBD-MySQL时成功  
\[root@GZDB yum.repos.d\]\# yum install perl-DBD-MySQL  
   .......  
Is this ok \[y/N\]: y  
Downloading Packages:  
(1/3): perl-DBD-MySQL-3.0007-2.el5.x86\_64.rpm                 | 148 kB     00:00       
(2/3): perl-DBI-1.52-2.el5.x86\_64.rpm                         | 600 kB     00:00       
(3/3): mysql-5.0.95-5.el5\_9.x86\_64.rpm                        | 4.9 MB     00:00       
\-------------------------------------------------------------------------------------  
Total                                                349 kB/s | 5.6 MB     00:16       
Running rpm\_check\_debug  
Running Transaction Test  
Finished Transaction Test  
Transaction Test Succeeded  
Running Transaction  
  Installing     : perl-DBI                                                      1/3  
  Installing     : mysql                                                         2/3  
warning: /etc/my.cnf created as /etc/my.cnf.rpmnew  
  Installing     : perl-DBD-MySQL                                                3/3  
  
Installed:  
  perl-DBD-MySQL.x86\_64 0:3.0007-2.el5                                                                                         
  
Dependency Installed:  
  mysql.x86\_64 0:5.0.95-5.el5\_9                                 perl-DBI.x86\_64 0:1.52-2.el5                                  
  
Complete!