Detect OpenVZ & LEB scripts

Comments

• maxexcloo Member

  August 2011 edited August 2011

  I use the code on line #260 here: https://github.com/maxexcloo/Minimal/blob/master/minimal.sh
  
• Boltersdriveer Member, LIR

  August 2011 edited August 2011

  On OpenVZ VPS:
  
  [root@tnm ~]# grep envID /proc/self/status
  
  envID: 113
  
  On non-OpenVZ server:
  
  [root@eclipse ~]# grep envID /proc/self/status
  
  envID: 0
  
• LowEndAdmin Member

  August 2011

  What @maxexcloo said. OpenVZ VPS would have /proc/bc or /proc/user_beancounters set. Just check for their existence.
• miTgiB Member

  August 2011 edited August 2011

  LowEndAdmin said: OpenVZ VPS would have /proc/bc or /proc/user_beancounters set

  No longer exists in containers on a CentOS 6 node

  [root@ovz03 ~]# vzctl enter 710
  entered into CT 710
  root@ns101 [/]# cat /proc/bc
  cat: /proc/bc: No such file or directory
  root@ns101 [/]# cat /proc/bean_counters
  cat: /proc/bean_counters: No such file or directory
  root@ns101 [/]# uname -a
  Linux ns101.hostigation.com 2.6.32-042stab031.1 #1 SMP Fri Aug 12 21:20:56 MSD 2011 i686 i686 i386 GNU/Linux
  root@ns101 [/]#
  

  I was wrong, user_beancounters is still there.

  Thanked by 2TigersWay vld
• Keith Member

  August 2011

  In my version of lowendscript https://github.com/Keith2/lowendscript
  
  I'm creating a conf file, if using OpenVZ is defined here instead of detecting it.
• LowEndAdmin Member

  August 2011

  @miTgiB -- yeah. I have a Hostigation VPS and /proc/user_beancounters is definitely there

  Thanked by 1TigersWay
• dmmcintyre3 Member

  August 2011 edited August 2011

  grep envID /proc/self/status returns:
  
  
  
  Nothing on a KVM VPS with standard kernel
  
  envID: 0 on a real server with openvz kernel
  
  envID: 110 on a VPS on that server.
• yomero Member

  August 2011

  dmmcintyre3 said: Nothing on a KVM VPS with standard kernel

  Yep, and also nothing in a real machine.
• dmmcintyre3 Member

  August 2011 edited August 2011

  @maxexcloo: your script incorrectly identifies my old laptop as a OpenVZ VPS. (since it's running the OpenVZ kernel, those files exist outside of VPSs too)
• maxexcloo Member

  August 2011

  Any idea's how I could fix that?
  I don't have much of an idea right now
• LowEndAdmin Member

  August 2011

  There are other directories that might be on an OpenVZ. For example /proc/vz. An empty /boot (although it could be easily populated with junks). Also the rootfs is usually mounted as simfs (not always the case though). For example

  grep ' / simfs' /proc/mounts