Module: Facter::Util::Virtual
- Defined in:
- lib/facter/util/virtual.rb
Class Method Summary collapse
-
.docker? ⇒ Boolean
docker? returns true if the process is running inside of a docker container.
- .gce? ⇒ Boolean
- .hpvm? ⇒ Boolean
- .jail? ⇒ Boolean
- .kvm? ⇒ Boolean
- .kvm_type ⇒ Object
-
.lspci(command = nil) ⇒ Object
lspci is a delegating helper method intended to make it easier to stub the system call without affecting other calls to Facter::Core::Execution.exec.
-
.lxc? ⇒ Boolean
lxc? returns true if the process is running inside of a linux container.
- .openvz? ⇒ Boolean
-
.openvz_cloudlinux? ⇒ Boolean
Cloudlinux uses OpenVZ to a degree, but always has an empty /proc/vz/ and has /proc/lve/list present.
-
.openvz_type ⇒ Object
So one can either have #6728 work on OpenVZ or Cloudlinux.
- .ovirt? ⇒ Boolean
-
.read_sysfs_dmi_entries(path = "/sys/firmware/dmi/entries/1-0/raw") ⇒ String
read_sysfs Reads the raw data as per the documentation at [Detecting if You Are Running in Google Compute Engine](developers.google.com/compute/docs/instances#dmi) This method is intended to provide an easy seam to mock.
- .rhev? ⇒ Boolean
-
.virt_what(cmd = "virt-what") ⇒ Object
virt_what is a delegating helper method intended to make it easier to stub the system call without affecting other calls to Facter::Core::Execution.exec.
- .virtualbox? ⇒ Boolean
- .vserver? ⇒ Boolean
- .vserver_type ⇒ Object
- .xen? ⇒ Boolean
- .zlinux? ⇒ Boolean
- .zone? ⇒ Boolean
Class Method Details
.docker? ⇒ Boolean
docker? returns true if the process is running inside of a docker container. Implementation derived from observation of a boot2docker system
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# File 'lib/facter/util/virtual.rb', line 178 def self.docker? path = Pathname.new('/proc/1/cgroup') return false unless path.readable? begin in_docker = path.readlines.any? {|l| l.split(":")[2].to_s.include? '/docker' } rescue Errno::EPERM => exc # This can fail under OpenVZ, just like in .lxc? return false end return true if in_docker return false end |
.gce? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 141 def self.gce? File.read("/sys/devices/virtual/dmi/id/product_name") =~ /Google/ rescue false end |
.hpvm? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 153 def self.hpvm? Facter::Core::Execution.exec("/usr/bin/getconf MACHINE_MODEL").chomp =~ /Virtual Machine/ end |
.jail? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 145 def self.jail? path = case Facter.value(:kernel) when "FreeBSD" then "/sbin" when "GNU/kFreeBSD" then "/bin" end Facter::Core::Execution.exec("#{path}/sysctl -n security.jail.jailed") == "1" end |
.kvm? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 109 def self.kvm? txt = if FileTest.exists?("/proc/cpuinfo") File.read("/proc/cpuinfo") elsif ["FreeBSD", "OpenBSD"].include? Facter.value(:kernel) Facter::Util::POSIX.sysctl("hw.model") elsif Facter.value(:kernel) == "SunOS" and FileTest.exists?("/usr/sbin/prtconf") Facter::Core::Execution.exec("/usr/sbin/prtconf -v") end (txt =~ /QEMU Virtual (CPU|Machine)/i) ? true : false end |
.kvm_type ⇒ Object
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# File 'lib/facter/util/virtual.rb', line 124 def self.kvm_type # TODO Tell the difference between kvm and qemu # Can't work out a way to do this at the moment that doesn't # require a special binary if self.kvm? "kvm" end end |
.lspci(command = nil) ⇒ Object
lspci is a delegating helper method intended to make it easier to stub the system call without affecting other calls to Facter::Core::Execution.exec
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# File 'lib/facter/util/virtual.rb', line 40 def self.lspci(command = nil) if command.nil? if ["FreeBSD", "OpenBSD"].include? Facter.value(:kernel) command = "pciconf -lv 2>/dev/null" else command = "lspci 2>/dev/null" end end Facter::Core::Execution.exec command end |
.lxc? ⇒ Boolean
lxc? returns true if the process is running inside of a linux container. Implementation derived from stackoverflow.com/questions/20010199/determining-if-a-process-runs-inside-lxc-docker
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# File 'lib/facter/util/virtual.rb', line 161 def self.lxc? path = Pathname.new('/proc/1/cgroup') return false unless path.readable? begin in_lxc = path.readlines.any? {|l| l.split(":")[2].to_s.include? '/lxc' } rescue Errno::EPERM => exc # If we get "operation not permitted" here, it probably means we are # running OpenVZ. We are not running LXC anyway, so... return false end return true if in_lxc return false end |
.openvz? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 52 def self.openvz? FileTest.directory?("/proc/vz") and not self.openvz_cloudlinux? end |
.openvz_cloudlinux? ⇒ Boolean
Cloudlinux uses OpenVZ to a degree, but always has an empty /proc/vz/ and has /proc/lve/list present
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# File 'lib/facter/util/virtual.rb', line 71 def self.openvz_cloudlinux? FileTest.file?("/proc/lve/list") or Dir.glob('/proc/vz/*').empty? end |
.openvz_type ⇒ Object
So one can either have #6728 work on OpenVZ or Cloudlinux. Whoo.
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# File 'lib/facter/util/virtual.rb', line 57 def self.openvz_type return false unless self.openvz? return false unless FileTest.exists?( '/proc/self/status' ) envid = Facter::Core::Execution.exec( 'grep "envID" /proc/self/status' ) if envid =~ /^envID:\s+0$/i return 'openvzhn' elsif envid =~ /^envID:\s+(\d+)$/i return 'openvzve' end end |
.ovirt? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 137 def self.ovirt? File.read("/sys/devices/virtual/dmi/id/product_name") =~ /oVirt Node/ rescue false end |
.read_sysfs_dmi_entries(path = "/sys/firmware/dmi/entries/1-0/raw") ⇒ String
read_sysfs Reads the raw data as per the documentation at [Detecting if You Are Running in Google Compute Engine](developers.google.com/compute/docs/instances#dmi) This method is intended to provide an easy seam to mock.
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# File 'lib/facter/util/virtual.rb', line 204 def self.read_sysfs_dmi_entries(path="/sys/firmware/dmi/entries/1-0/raw") if File.readable?(path) begin Facter::Util::FileRead.read_binary(path) rescue Errno::EINVAL end end end |
.rhev? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 133 def self.rhev? File.read("/sys/devices/virtual/dmi/id/product_name") =~ /RHEV Hypervisor/ rescue false end |
.virt_what(cmd = "virt-what") ⇒ Object
virt_what is a delegating helper method intended to make it easier to stub the system call without affecting other calls to Facter::Core::Execution.exec
Per bugzilla.redhat.com/show_bug.cgi?id=719611 when run as a non-root user the virt-what command may emit an error message on stdout, and later versions of virt-what may emit this message on stderr. This method ensures stderr is redirected and that error messages are stripped from stdout.
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# File 'lib/facter/util/virtual.rb', line 16 def self.virt_what(cmd = "virt-what") if bindir = Facter::Util::Config.override_binary_dir command = Facter::Core::Execution.which(File.join(bindir, cmd)) else command = nil end if !command command = Facter::Core::Execution.which(cmd) return unless command end if Facter.value(:kernel) == 'windows' redirected_cmd = "#{command} 2>NUL" else redirected_cmd = "#{command} 2>/dev/null" end output = Facter::Core::Execution.exec redirected_cmd output.gsub(/^virt-what: .*$/, '') if output end |
.virtualbox? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 120 def self.virtualbox? File.read("/sys/devices/virtual/dmi/id/product_name") =~ /VirtualBox/ rescue false end |
.vserver? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 82 def self.vserver? return false unless FileTest.exists?("/proc/self/status") txt = File.open("/proc/self/status", "rb").read if txt.respond_to?(:encode!) txt.encode!('UTF-16', 'UTF-8', :invalid => :replace) txt.encode!('UTF-8', 'UTF-16') end return true if txt =~ /^(s_context|VxID):[[:blank:]]*[0-9]/ return false end |
.vserver_type ⇒ Object
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# File 'lib/facter/util/virtual.rb', line 93 def self.vserver_type if self.vserver? if FileTest.exists?("/proc/virtual") "vserver_host" else "vserver" end end end |
.xen? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 103 def self.xen? ["/proc/sys/xen", "/sys/bus/xen", "/proc/xen" ].detect do |f| FileTest.exists?(f) end end |
.zlinux? ⇒ Boolean
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# File 'lib/facter/util/virtual.rb', line 191 def self.zlinux? "zlinux" end |