Puppet » Facter

the virtual fact does not work on vserver 2.3.1 because /proc/virtual is hidden but still detected by facter:

The only REAL way to tell is to test /proc/self/status and look for the vxid, if zero => host, if 1 => special spectator context facter will nerver see this one, if more => guest

i wrote this one for me:

if File.exists?("/proc/self/status")
File.open('/proc/self/status').each_line{ |s|
        procstatus = s.split(': ');
        if procstatus[0]  == 'VxID'
                if procstatus[1].strip!  == '0'
                        # this is the host
                        Facter.add("vps") do
                                setcode{ "vserverhost" }
                        end
                else
                        # this is the guest
                        Facter.add("vps") do
                                setcode{ "vserverguest" }
                        end
                end
        else
                # pas un vserver
        end
}
end

This does not relly on file xx or yy to be there it just test if the current process has a virtual ID.

GUEST:/%(root)> facter virtual
vserver_host
GUEST:/%(root)> grep -i VXid /proc/self/status
VxID: 40410

(root)> vserver-info
Versions:
                   Kernel: 3.0.7-vs2.3.1aq
                   VS-API: 0x00020308
                      VCI: 0x0000000013001f11
             util-vserver: 0.30.216-pre2994; Oct 21 2011, 17:32:30