با سلام خدمت اساتید محترم
هنگام اجرای فرمان apt-get update در سرور مجازی debian 8 به ارور زیر برخوردیم


کد:


root@firedrive ~# apt-get update
Err http://archive.turnkeylinux.org jessie-security InRelease


Err http://archive.turnkeylinux.org jessie InRelease


Err http://archive.turnkeylinux.org squeeze InRelease


Err http://security.debian.org jessie/updates InRelease


Err http://http.debian.net jessie InRelease


Err http://archive.turnkeylinux.org jessie-security Release.gpg
  Could not resolve 'archive.turnkeylinux.org'                                                                                                       
Err http://archive.turnkeylinux.org jessie Release.gpg
  Could not resolve 'archive.turnkeylinux.org'                                                                                                       
Err http://security.debian.org jessie/updates Release.gpg
  Could not resolve 'security.debian.org'                                                                                                            
Err http://http.debian.net jessie Release.gpg
  Could not resolve 'http.debian.net'                                                                                                                
Err http://archive.turnkeylinux.org squeeze Release.gpg
  Could not resolve 'archive.turnkeylinux.org'                                                                                                       
Reading package lists... Done
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/jessie-security/InRelease                                                            
                                                                                                                                                     
W: Failed to fetch http://security.debian.org/dists/jessie/updates/InRelease                                                                         
                                                                                                                                                     
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/jessie/InRelease                                                                     
                                                                                                                                                     
W: Failed to fetch http://http.debian.net/debian/dists/jessie/InRelease                                                                              
                                                                                                                                                     
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/squeeze/InRelease                                                                    
                                                                                                                                                     
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/jessie-security/Release.gpg  Could not resolve 'archive.turnkeylinux.org'            
                                                                                                                                                     
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/jessie/Release.gpg  Could not resolve 'archive.turnkeylinux.org'                     
                                                                                                                                                     
W: Failed to fetch http://archive.turnkeylinux.org/debian/dists/squeeze/Release.gpg  Could not resolve 'archive.turnkeylinux.org'                    
                                                                                                                                                     
W: Failed to fetch http://security.debian.org/dists/jessie/updates/Release.gpg  Could not resolve 'security.debian.org'                              
                                                                                                                                                     
W: Failed to fetch http://http.debian.net/debian/dists/jessie/Release.gpg  Could not resolve 'http.debian.net'                                       
                                                                                                                                                     
W: Some index files failed to download. They have been ignored, or old ones used instead
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