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