Installed VPS server and got error messages when tried to update it or download some software?
Solution on most linux system is this:

add to the command line:

vim /etc/resolv.conf
now hit key "a"

now paste this into resolv.conf file


search google.com
nameserver 8.8.8.8
nameserver 8.8.4.4

do Ctrl + C
do :w
do :q

now repeat your update process like apt-get update, yum update, you service install etc.



Sample error message you might get when you have not set nameservers for external internet conenction:

Code:
[email protected]:~# apt-get updateErr http://us.archive.ubuntu.com lucid Release.gpg
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid/main Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid/universe Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid/multiverse Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com lucid-security Release.gpg
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid-security/main Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid-security/universe Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com/ubuntu/ lucid-security/multiverse Translation-en_US
  Temporary failure resolving 'us.archive.ubuntu.com'
Reading package lists... Done
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid/Release.gpg  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid/main/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid/universe/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid/multiverse/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid-security/Release.gpg  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid-security/main/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid-security/universe/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/lucid-security/multiverse/i18n/Translation-en_US.lzma  Temporary failure resolving 'us.archive.ubuntu.com'


W: Some index files failed to download, they have been ignored, or old ones used instead.