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# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from __future__ import annotations
import glob
import os
import re
from ansible.module_utils.facts.virtual.base import Virtual, VirtualCollector
from ansible.module_utils.facts.utils import get_file_content, get_file_lines
class LinuxVirtual(Virtual):
"""
This is a Linux-specific subclass of Virtual. It defines
- virtualization_type
- virtualization_role
"""
platform = 'Linux'
# For more information, check: http://people.redhat.com/~rjones/virt-what/
def get_virtual_facts(self):
virtual_facts = {}
# We want to maintain compatibility with the old "virtualization_type"
# and "virtualization_role" entries, so we need to track if we found
# them. We won't return them until the end, but if we found them early,
# we should avoid updating them again.
found_virt = False
# But as we go along, we also want to track virt tech the new way.
host_tech = set()
guest_tech = set()
# lxc/docker
if os.path.exists('/proc/1/cgroup'):
for line in get_file_lines('/proc/1/cgroup'):
if re.search(r'/docker(/|-[0-9a-f]+\.scope)', line):
guest_tech.add('docker')
if not found_virt:
virtual_facts['virtualization_type'] = 'docker'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if re.search('/lxc/', line) or re.search('/machine.slice/machine-lxc', line):
guest_tech.add('lxc')
if not found_virt:
virtual_facts['virtualization_type'] = 'lxc'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if re.search('/system.slice/containerd.service', line):
guest_tech.add('containerd')
if not found_virt:
virtual_facts['virtualization_type'] = 'containerd'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
# lxc does not always appear in cgroups anymore but sets 'container=lxc' environment var, requires root privs
if os.path.exists('/proc/1/environ'):
for line in get_file_lines('/proc/1/environ', line_sep='\x00'):
if re.search('container=lxc', line):
guest_tech.add('lxc')
if not found_virt:
virtual_facts['virtualization_type'] = 'lxc'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if re.search('container=podman', line):
guest_tech.add('podman')
if not found_virt:
virtual_facts['virtualization_type'] = 'podman'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if re.search('^container=.', line):
guest_tech.add('container')
if not found_virt:
virtual_facts['virtualization_type'] = 'container'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if os.path.exists('/proc/vz') and not os.path.exists('/proc/lve'):
virtual_facts['virtualization_type'] = 'openvz'
if os.path.exists('/proc/bc'):
host_tech.add('openvz')
if not found_virt:
virtual_facts['virtualization_role'] = 'host'
else:
guest_tech.add('openvz')
if not found_virt:
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
systemd_container = get_file_content('/run/systemd/container')
if systemd_container:
guest_tech.add(systemd_container)
if not found_virt:
virtual_facts['virtualization_type'] = systemd_container
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
# If docker/containerd has a custom cgroup parent, checking /proc/1/cgroup (above) might fail.
# https://docs.docker.com/engine/reference/commandline/dockerd/#default-cgroup-parent
# Fallback to more rudimentary checks.
if os.path.exists('/.dockerenv') or os.path.exists('/.dockerinit'):
guest_tech.add('docker')
if not found_virt:
virtual_facts['virtualization_type'] = 'docker'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
# ensure 'container' guest_tech is appropriately set
if guest_tech.intersection(set(['docker', 'lxc', 'podman', 'openvz', 'containerd'])) or systemd_container:
guest_tech.add('container')
if os.path.exists("/proc/xen"):
is_xen_host = False
try:
for line in get_file_lines('/proc/xen/capabilities'):
if "control_d" in line:
is_xen_host = True
except OSError:
pass
if is_xen_host:
host_tech.add('xen')
if not found_virt:
virtual_facts['virtualization_type'] = 'xen'
virtual_facts['virtualization_role'] = 'host'
else:
if not found_virt:
virtual_facts['virtualization_type'] = 'xen'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
# assume guest for this block
if not found_virt:
virtual_facts['virtualization_role'] = 'guest'
product_name = get_file_content('/sys/devices/virtual/dmi/id/product_name')
sys_vendor = get_file_content('/sys/devices/virtual/dmi/id/sys_vendor')
product_family = get_file_content('/sys/devices/virtual/dmi/id/product_family')
if product_name in ('KVM', 'KVM Server', 'Bochs', 'AHV', 'CloudStack KVM Hypervisor'):
guest_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
found_virt = True
if sys_vendor == 'oVirt':
guest_tech.add('oVirt')
if not found_virt:
virtual_facts['virtualization_type'] = 'oVirt'
found_virt = True
if sys_vendor == 'Red Hat':
if product_family == 'RHV':
guest_tech.add('RHV')
if not found_virt:
virtual_facts['virtualization_type'] = 'RHV'
found_virt = True
elif product_name == 'RHEV Hypervisor':
guest_tech.add('RHEV')
if not found_virt:
virtual_facts['virtualization_type'] = 'RHEV'
found_virt = True
if product_name and product_name.startswith(("VMware",)):
guest_tech.add('VMware')
if not found_virt:
virtual_facts['virtualization_type'] = 'VMware'
found_virt = True
if product_name in ('OpenStack Compute', 'OpenStack Nova'):
guest_tech.add('openstack')
if not found_virt:
virtual_facts['virtualization_type'] = 'openstack'
found_virt = True
bios_vendor = get_file_content('/sys/devices/virtual/dmi/id/bios_vendor')
if bios_vendor == 'Xen':
guest_tech.add('xen')
if not found_virt:
virtual_facts['virtualization_type'] = 'xen'
found_virt = True
if bios_vendor == 'innotek GmbH':
guest_tech.add('virtualbox')
if not found_virt:
virtual_facts['virtualization_type'] = 'virtualbox'
found_virt = True
if bios_vendor in ('Amazon EC2', 'DigitalOcean', 'Hetzner', 'Linode'):
guest_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
found_virt = True
KVM_SYS_VENDORS = ('QEMU', 'Amazon EC2', 'DigitalOcean', 'Google', 'Scaleway', 'Nutanix')
if sys_vendor in KVM_SYS_VENDORS:
guest_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
found_virt = True
if sys_vendor == 'KubeVirt':
guest_tech.add('KubeVirt')
if not found_virt:
virtual_facts['virtualization_type'] = 'KubeVirt'
found_virt = True
# FIXME: This does also match hyperv
if sys_vendor == 'Microsoft Corporation':
guest_tech.add('VirtualPC')
if not found_virt:
virtual_facts['virtualization_type'] = 'VirtualPC'
found_virt = True
if sys_vendor == 'Parallels Software International Inc.':
guest_tech.add('parallels')
if not found_virt:
virtual_facts['virtualization_type'] = 'parallels'
found_virt = True
if sys_vendor == 'OpenStack Foundation':
guest_tech.add('openstack')
if not found_virt:
virtual_facts['virtualization_type'] = 'openstack'
found_virt = True
# unassume guest
if not found_virt:
del virtual_facts['virtualization_role']
if os.path.exists('/proc/self/status'):
for line in get_file_lines('/proc/self/status'):
if re.match(r'^VxID:\s+\d+', line):
if not found_virt:
virtual_facts['virtualization_type'] = 'linux_vserver'
if re.match(r'^VxID:\s+0', line):
host_tech.add('linux_vserver')
if not found_virt:
virtual_facts['virtualization_role'] = 'host'
else:
guest_tech.add('linux_vserver')
if not found_virt:
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if os.path.exists('/proc/cpuinfo'):
for line in get_file_lines('/proc/cpuinfo'):
if re.match('^model name.*QEMU Virtual CPU', line):
guest_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
elif re.match('^vendor_id.*User Mode Linux', line):
guest_tech.add('uml')
if not found_virt:
virtual_facts['virtualization_type'] = 'uml'
elif re.match('^model name.*UML', line):
guest_tech.add('uml')
if not found_virt:
virtual_facts['virtualization_type'] = 'uml'
elif re.match('^machine.*CHRP IBM pSeries .emulated by qemu.', line):
guest_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
elif re.match('^vendor_id.*PowerVM Lx86', line):
guest_tech.add('powervm_lx86')
if not found_virt:
virtual_facts['virtualization_type'] = 'powervm_lx86'
elif re.match('^vendor_id.*IBM/S390', line):
guest_tech.add('PR/SM')
if not found_virt:
virtual_facts['virtualization_type'] = 'PR/SM'
lscpu = self.module.get_bin_path('lscpu')
if lscpu:
rc, out, err = self.module.run_command(["lscpu"])
if rc == 0:
for line in out.splitlines():
data = line.split(":", 1)
key = data[0].strip()
if key == 'Hypervisor':
tech = data[1].strip()
guest_tech.add(tech)
if not found_virt:
virtual_facts['virtualization_type'] = tech
else:
guest_tech.add('ibm_systemz')
if not found_virt:
virtual_facts['virtualization_type'] = 'ibm_systemz'
else:
continue
if virtual_facts['virtualization_type'] == 'PR/SM':
if not found_virt:
virtual_facts['virtualization_role'] = 'LPAR'
else:
if not found_virt:
virtual_facts['virtualization_role'] = 'guest'
if not found_virt:
found_virt = True
# Beware that we can have both kvm and virtualbox running on a single system
if os.path.exists("/proc/modules") and os.access('/proc/modules', os.R_OK):
modules = []
for line in get_file_lines("/proc/modules"):
data = line.split(" ", 1)
modules.append(data[0])
if 'kvm' in modules:
host_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
virtual_facts['virtualization_role'] = 'host'
if os.path.isdir('/rhev/'):
# Check whether this is a RHEV hypervisor (is vdsm running ?)
for f in glob.glob('/proc/[0-9]*/comm'):
try:
with open(f) as virt_fh:
comm_content = virt_fh.read().rstrip()
if comm_content in ('vdsm', 'vdsmd'):
# We add both kvm and RHEV to host_tech in this case.
# It's accurate. RHEV uses KVM.
host_tech.add('RHEV')
if not found_virt:
virtual_facts['virtualization_type'] = 'RHEV'
break
except Exception:
pass
found_virt = True
if 'vboxdrv' in modules:
host_tech.add('virtualbox')
if not found_virt:
virtual_facts['virtualization_type'] = 'virtualbox'
virtual_facts['virtualization_role'] = 'host'
found_virt = True
if 'virtio' in modules:
host_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
# In older Linux Kernel versions, /sys filesystem is not available
# dmidecode is the safest option to parse virtualization related values
dmi_bin = self.module.get_bin_path('dmidecode')
# We still want to continue even if dmidecode is not available
if dmi_bin is not None:
(rc, out, err) = self.module.run_command('%s -s system-product-name' % dmi_bin)
if rc == 0:
# Strip out commented lines (specific dmidecode output)
vendor_name = ''.join([line.strip() for line in out.splitlines() if not line.startswith('#')])
if vendor_name.startswith('VMware'):
guest_tech.add('VMware')
if not found_virt:
virtual_facts['virtualization_type'] = 'VMware'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if 'BHYVE' in out:
guest_tech.add('bhyve')
if not found_virt:
virtual_facts['virtualization_type'] = 'bhyve'
virtual_facts['virtualization_role'] = 'guest'
found_virt = True
if os.path.exists('/dev/kvm'):
host_tech.add('kvm')
if not found_virt:
virtual_facts['virtualization_type'] = 'kvm'
virtual_facts['virtualization_role'] = 'host'
found_virt = True
# If none of the above matches, return 'NA' for virtualization_type
# and virtualization_role. This allows for proper grouping.
if not found_virt:
virtual_facts['virtualization_type'] = 'NA'
virtual_facts['virtualization_role'] = 'NA'
found_virt = True
virtual_facts['virtualization_tech_guest'] = guest_tech
virtual_facts['virtualization_tech_host'] = host_tech
return virtual_facts
class LinuxVirtualCollector(VirtualCollector):
_fact_class = LinuxVirtual
_platform = 'Linux'
|
