Recently, when installing perl-dbd-mysql with Yum, temporary failure in name resolution,trying and other mirror were encountered. That is, the name resolution fails and attempts to use a different mirror. Because this machine is the newly installed new server, the following is the description of the phenomenon and the process of the problem.
1, fault phenomenon
# # #当前环境
[Email protected] ~]# cat/etc/issue
CentOS release 5.11 (Final)
Kernel \ r on an \m
[email protected] ~]# 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) 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) 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) No more mirrors to try.
# # #尝试ping百度, the result indicates an unknown host
[[email protected] yum.repos.d]# Ping www.baidu.com
Ping:unknown Host Www.baidu.com
[[email protected] yum.repos.d]# Ping www.baidu.com
Ping:unknown Host Www.baidu.com
2, fault resolution
# # #结合上面的错误提示及无法ping通百度, should be DNS resolution not configured
[Email protected] yum.repos.d]# more/etc/resolv.conf# # #未配置dns解析
# # #添加dns解析
[[email protected] yum.repos.d]# echo "
> NameServer 121.14.37.62
> nameserver 203.196.0.6 ">>/etc/resolv.conf
[[email protected] yum.repos.d]# Ping www.baidu.com
PING www.a.shifen.com (119.75.217.109) bytes of data.
Bytes from 119.75.217.109:icmp_seq=1 ttl=52 time=38.7 ms
Bytes from 119.75.217.109:icmp_seq=2 ttl=52 time=38.8 ms
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 Success when Perl-dbd-mysql
[email protected] 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 | 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!
Temporary failure in name resolution
