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Temporary failure in name resolution

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-MyS

02

Install Jumpserver31

Running transaction Installing : 1:mariadb-5.5.56-2.el7.x86_64 1/9 Installing : 1:perl-Compress-Raw-Zlib-2.061-4.el7.x86_64 2/9 Installing : perl-Net-Daemon-0.48-5.el7.noarch 3/9 Installing : perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64 4/9 Installing : perl-IO-Compress-2.061-2.el7.noarch 5/9 Installing : perl-PlRPC-0.2020-14.el7.noarch 6/9 Installing : perl-DBI-1.627-4.el7.x86_64 7/9 Installing : perl-DBD-MySQL-4.023-6.el7.x86_64 8/9 Installing : 1:mariadb-server-5.5.56-2.el7.x86_64 9/9 Verifying : perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64 1/9 Verifying : perl-Net-Daemon-0.48-5.el7.noarch 2/9 Verifying : perl-DBD-MySQL-4.023-6.el7.x86_64 3/9 Verifying : perl-PlRPC-0.2020-14.el7.noarch 4/9 Verifying : 1:perl-Compress-Raw-Zlib-2.061-4.el7.x86_64 5/9 Verifying : 1:mariadb-server-5.5.56-2.el7.x86_64 6/9 Verifying : perl-IO-Compress-2.061-2.el7.noarch 7/9 Verifying : perl-DBI-1.627-4.el7.x86_64 8/9 Verifying : 1:mariadb-5.5.56-2.el7.x86_64 9/9 Installed: mariadb.x86_64 1:5.5.56-2.el7 mariadb-server.x86_64 1:5.5.56-2.el7 Dependency Installed: perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-DBD-MySQL.x86_64 0:4.023-6.el7 perl-DBI.x86

01

Install Jumpserver30

Dependencies Resolved ========================================================================================= Package Arch Version Repository Size ========================================================================================= Installing: mariadb x86_64 1:5.5.56-2.el7 base 8.7 M mariadb-server x86_64 1:5.5.56-2.el7 base 11 M Installing for dependencies: perl-Compress-Raw-Bzip2 x86_64 2.061-3.el7 base 32 k perl-Compress-Raw-Zlib x86_64 1:2.061-4.el7 base 57 k perl-DBD-MySQL x86_64 4.023-6.el7 base 140 k perl-DBI x86_64 1.627-4.el7 base 802 k perl-IO-Compress noarch 2.061-2.el7 base 260 k perl-Net-Daemon noarch 0.48-5.el7 base 51 k perl-PlRPC noarch 0.2020-14.el7 base 36 k Transaction Summary ========================================================================================= Install2 Packages (+7 Dependent packages) Total download size: 21 M Installed size: 110 M Downloading packages: (1/9): perl-Compress-Raw-Bzip2-2.061-3.el7.x86_64.rpm | 32 kB 00:00:00 (2/9): perl-DBD-MySQL-4.023-6.el7.x86_64.rpm | 140 kB 00:00:00 (3/9): perl-DBI-1.627-4.el7.x86_64.rpm | 802 kB 00:00:00 (4/9): perl-Net-Daemon-0.48-5.el7.noarch.rpm | 51 kB 00:00:00 (5/9): perl-PlRPC-0.2020-14.el7.noarch.rpm | 36 kB 00:00:00 (6/9): perl-IO-Compress-2.061-2.el7.noarch.rpm | 260 kB 00:00:01 (7/9): mariadb-server-5.5.56-2.el7.x86_64.rpm | 11 MB 00:00:08 (8/9): mariadb-5.5.56-2.el7.x86_64.rpm

02

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