[sles-beta] SLES12 RC1 SUSEConnect distingush between virtiual and physical server?

[urs.frey at post.ch]

Hello Josef

OK, thank you very much!
I see:
In fact you are doing nothing other than

  def hypervisor
    output['Hypervisor vendor']
  end

  def output
    @output ||= execute('lscpu', false).split("\n").reduce({}) do |hash, line|
      k, v = line.split(':')
      hash[k] = v.strip
      hash
    end
  end

Which is in bash shell:

KVM:
=====
h05cnh:~ # lscpu | grep "Hypervisor vendor"| cut -d":" -f2 | awk '{print $1}'
KVM
h05cnh:~ #


VMware ESXi
==========
v03er9:~ # lscpu| grep "Hypervisor vendor"| cut -d":" -f2 | awk '{print $1}'
VMware
v03er9:~ #

HP ProLiant
=========
h05cni:~ # lscpu| grep "Hypervisor vendor"| cut -d":" -f2 | awk '{print $1}'
h05cni:~ #


And therefore if "Hypervisor vendor" Output has some value, you know : "This is a virtual machine installation"

Is this correct?

Thank you very much

Best regards


Urs Frey                                              
Post CH AG
Informationstechnologie
IT Betrieb 
Webergutstrasse 12 
3030 Bern (Zollikofen) 
Telefon : ++41 (0)58 338 58 70 
FAX     : ++41 (0)58 667 30 07 
E-Mail:   urs.frey at post.ch

-----Ursprüngliche Nachricht-----
Von: Josef Reidinger [mailto:jreidinger at suse.com] 
Gesendet: Tuesday, August 12, 2014 8:15 AM
An: sles-beta at lists.suse.com
Cc: Frey Urs, IT222
Betreff: Re: [sles-beta] SLES12 RC1 SUSEConnect distingush between virtiual and physical server?

On Mon, 11 Aug 2014 16:55:47 +0000
<urs.frey at post.ch> wrote:

> Hi
> 
> I finally found an old note of mine showing me, that once in SLES12
> beta6 the
> file /usr/lib64/ruby/gems/2.0.0/gems/suse-connect-0.0.17/lib/suse/connect/system.rb,
> there was this sequence to distinguish between virtual and physical
> installation when registering.
> 
> Within the file
> /usr/lib64/ruby/gems/2.0.0/gems/suse-connect-0.0.17/lib/suse/connect/system.rb
> I can see this sequence
> 
> module SUSE
>   module Connect
>     # System class allowing to interact with underlying system
>     class System
> 
>       class << self
> 
>         def hwinfo
>           info = {
>             :cpu_type       => `uname -p`,
>             :cpu_count      => `grep "processor" /proc/cpuinfo | wc
> -l`, :platform_type  => `uname -i`,
>             :hostname       => `hostname`
>           }
> 
>           info.values.each(&:chomp!)
>           dmidecode = `dmidecode`
>           virt_zoo = ['vmware', 'virtual machine', 'qemu', 'domu']
>           info[:virtualized] = (virt_zoo).any? {|ident|
> dmidecode.downcase.include? ident } if dmidecode info
>         end
> 
>         # returns username and password from SCC_CREDENTIALS_FILE
> 
> So dmidecode is used to detect a virtual machine
> 
> 
> Now with SLES12 RC1 this sequence has gone, there are some hypervisor
> definitions now
> 
> h05cnh:~ #
> cat /usr/lib64/ruby/gems/2.1.0/gems/suse-connect-0.2.7/lib/suse/connect/system.rb
> require 'suse/toolkit/hwinfo'
> 
> module SUSE
>   module Connect
>     # System class allowing to interact with underlying system
>     class System
>       class << self
> 
>         include SUSE::Toolkit::Hwinfo
> 
>         attr_accessor :filesystem_root
> 
>         def prefix_path(path)
>           filesystem_root ? File.join(filesystem_root, path) : path
>         end
> 
>         def hwinfo
>           if x86?
>             {
>               hostname: hostname,
>               cpus: cpus,
>               sockets: sockets,
>               hypervisor: hypervisor,
>               arch: arch,
>               uuid: uuid
>             }
>           else
>             {
>               hostname: hostname,
>               arch: arch
>             }
>           end
>         end
> 
> From the toolkit hwinfo,rb I can see some Hypervisor definitions
> h05cnh:~ #
> cat /usr/lib64/ruby/gems/2.1.0/gems/suse-connect-0.2.7/lib/suse/toolkit/hwinfo.rb
> require 'suse/toolkit/system_calls'
> 
> # Collects system hardware information
> module SUSE::Toolkit::Hwinfo
> 
>   include SUSE::Toolkit::SystemCalls
> 
>   def cpus
>     output['CPU(s)'].to_i
>   end
> 
>   def sockets
>     output['Socket(s)'].to_i
>   end
> 
>   def hypervisor
>     output['Hypervisor vendor']
>   end
> 
> Can somebody please show me, how now SUSEConnect can distinguish
> between a HP-ProLiant Server, a XEN client, a KVM client and a VMWare
> ESXi client. It is really of interest to see how it is done.
> ( Believing is one thing. But understanding the process gives me
> confidence. )
> 
> Thank you very much, indeed
> 
> Best regards
> 
> 

Hi Urs,
I check current code on github and it uses now lscpu call -
https://github.com/SUSE/connect/blob/master/lib/suse/connect/hwinfo/x86.rb#L45
from which it create pairs of keys and values. and there should by
Hypervisor vendor key.

Josef