# yum install boost-devel gcc-c++ mysql-devel subversion<br />
Loaded plugins: fastestmirror<br />
Loading mirror speeds from cached hostfile<br />
Could not retrieve mirrorlist <a href="http://mirrorlist.centos.org/?release=5&arch=i386&repo=os">http://mirrorlist.centos.org/?release=5&arch=i386&repo=os</a> [<a href="http://mirrorlist.centos.org/?release=5&arch=i386&repo=os" target="_blank">^</a>] e<br />
rror was<br />
[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')><br />
Error: Cannot find a valid baseurl for repo: base"............<br />
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i got this erorr so help me in resoving the erorr
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