debops.libvirtd default variables¶

Sections

libvirt features
libvirtd packages
Access control
libvirtd connection URI
libvirtd master configuration
KSM (Kernel Samepage Merging) configuration
Firewall configuration
Configuration for other Ansible roles

libvirt features ¶

libvirtd__kvm_support¶

Enable or disable support for KVM-based virtual machines.

libvirtd__kvm_support: '{{ True
                           if (ansible_virtualization_type == "kvm" and
                               (ansible_virtualization_role == "host" or
                                libvirtd__register_hw_virt.stdout|d()))
                           else False }}'

libvirtd packages ¶

libvirtd__base_packages¶

List of libvirtd packages which will be installed on all distribution releases, unless overridden.

libvirtd__base_packages:
  - 'libvirt-daemon-system'
  - 'libvirt-clients'
  - 'libnss-libvirt'

libvirtd__base_packages_map¶

Override list of base packages for specific distribution releases.

libvirtd__base_packages_map:
  'wheezy':  [ 'libvirt-bin' ]
  'precise': [ 'libvirt-bin' ]
  'trusty':  [ 'libvirt-bin' ]
  'xenial':  [ 'libvirt-bin' ]

libvirtd__kvm_packages¶

List of QEMU KVM packages to install. They will be installed on all hosts apart from KVM guests, to not create redundant support.

libvirtd__kvm_packages: '{{ [ "qemu-system-x86", "qemu-utils" ]
                            + ([ "qemu-kvm" ]
                              if ansible_distribution_release in [ "stretch",
                                   "buster", "bionic", "focal" ]
                              else []) }}'

libvirtd__network_packages¶

List of network-related packages to install with libvirtd.

libvirtd__network_packages:
  - 'dnsmasq-base'
  - 'bridge-utils'
  - 'ebtables'

libvirtd__misc_packages¶

List of APT packages related to different subsystems not specified in other package lists, or packages which are required by libvirtd for correct operation.

libvirtd__misc_packages:
  - 'gawk'
  - 'netcat-openbsd'
  - 'ovmf'  # UEFI firmware for amd64 VMs
  - 'pm-utils'
  - 'sysfsutils'
  - '{{ [] if (ansible_distribution_release in [ "bullseye" ])
           else "virt-top" }}'

libvirtd__packages¶

List of custom packages to install.

libvirtd__packages: []

libvirtd__version¶

The version of the libvirtd daemon exposed as a convenient variable for conditional checks.

libvirtd__version: '{{ ansible_local.libvirtd.version|d("0.0.0") }}'

Access control ¶

libvirtd__deployment_mode¶

Specify the type of the environment a given libvirtd operates in. Possible choices: libvirt, opennebula.

libvirtd__deployment_mode: '{{ "opennebula"
                               if ("debops_service_opennebula_node" in group_names)
                               else "libvirt" }}'

libvirtd__admins¶

List of administrator accounts which should have access to libvirtd.

libvirtd__admins: '{{ [ ansible_user | d(lookup("env", "USER")) ]
                      if ansible_user | d(lookup("env", "USER")) != "root"
                      else [] }}'

libvirtd__unix_sock_group¶

Name of the UNIX system group which is allowed to access libvirtd service through its UNIX sockets.

libvirtd__unix_sock_group: '{{ ansible_local.libvirtd.unix_sock_group|d("libvirt") }}'

libvirtd connection URI ¶

libvirtd__system_uri¶

Connection URI for the local libvirtd instance.

libvirtd__system_uri: 'qemu:///system'

libvirtd__uri_aliases¶

YAML dictionary with system-wide connection aliases configured in the /etc/libvirt/libvirt.conf configuration file.

Each key is an alias for a connection, each value should be a valid libvirt URI connection string.

libvirtd__uri_aliases:
  'localhost': '{{ libvirtd__system_uri }}'

libvirtd__default_uri¶

Name of the alias from the libvirtd__uri_aliases variable configured as default libvirt connection system-wide.

libvirtd__default_uri: 'localhost'

libvirtd master configuration ¶

These lists define configuration options present in the /etc/libvirt/libvirtd.conf configuration file. See libvirtd__configuration for more details.

libvirtd__original_configuration¶

List of original libvirtd configuration options defined by the installed software package.

libvirtd__original_configuration:

  - name: 'listen_tls'  # [[[
    comment: |
      Flag listening for secure TLS connections on the public TCP/IP port.
      NB, must pass the --listen flag to the libvirtd process for this to
      have any effect.

      It is necessary to setup a CA and issue server certificates before
      using this capability.

      This is enabled by default, uncomment this to disable it
    value: False
    section: 'network'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'listen_tcp'  # [[[
    comment: |
      Listen for unencrypted TCP connections on the public TCP/IP port.
      NB, must pass the --listen flag to the libvirtd process for this to
      have any effect.

      Using the TCP socket requires SASL authentication by default. Only
      SASL mechanisms which support data encryption are allowed. This is
      DIGEST_MD5 and GSSAPI (Kerberos5)

      This is disabled by default, uncomment this to enable it.
    value: True
    section: 'network'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'tls_port'  # [[[
    comment: |
      Override the port for accepting secure TLS connections
      This can be a port number, or service name
    value: '16514'
    section: 'network'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'tcp_port'  # [[[
    comment: |
      Override the port for accepting insecure TCP connections
      This can be a port number, or service name
    value: '16509'
    section: 'network'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'listen_addr'  # [[[
    comment: |
      Override the default configuration which binds to all network
      interfaces. This can be a numeric IPv4/6 address, or hostname

      If the libvirtd service is started in parallel with network
      startup (e. g. with systemd), binding to addresses other than
      the wildcards (0.0.0.0/::) might not be available yet.
    value: '192.168.0.1'
    section: 'network'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'mdns_adv'  # [[[
    comment: |
      Flag toggling mDNS advertisement of the libvirt service.

      Alternatively can disable for all services on a host by
      stopping the Avahi daemon

      This is disabled by default, uncomment this to enable it
    value: True
    section: 'network'
    state: 'comment'
    weight: 6  # ]]]

  - name: 'mdns_name'  # [[[
    comment: |
      Override the default mDNS advertisement name. This must be
      unique on the immediate broadcast network.

      The default is "Virtualization Host HOSTNAME", where HOSTNAME
      is substituted for the short hostname of the machine (without domain)
    value: 'Virtualization Host Joe Demo'
    section: 'network'
    state: 'comment'
    weight: 7  # ]]]

  - name: 'unix_sock_group'  # [[[
    comment: |
      Set the UNIX domain socket group ownership. This can be used to
      allow a 'trusted' set of users access to management capabilities
      without becoming root.

      This is restricted to 'root' by default.
    value: 'libvirt'
    section: 'unix-socket'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'unix_sock_ro_perms'  # [[[
    comment: |
      Set the UNIX socket permissions for the R/O socket. This is used
      for monitoring VM status only

      Default allows any user. If setting group ownership, you may want to
      restrict this too.
    value: '0777'
    section: 'unix-socket'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'unix_sock_rw_perms'  # [[[
    comment: |
      Set the UNIX socket permissions for the R/W socket. This is used
      for full management of VMs

      Default allows only root. If PolicyKit is enabled on the socket,
      the default will change to allow everyone (eg, 0777)

      If not using PolicyKit and setting group ownership for access
      control, then you may want to relax this too.
    value: '0770'
    section: 'unix-socket'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'unix_sock_admin_perms'  # [[[
    comment: |
      Set the UNIX socket permissions for the admin interface socket.

      Default allows only owner (root), do not change it unless you are
      sure to whom you are exposing the access to.
    value: '0700'
    section: 'unix-socket'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'unix_sock_dir'  # [[[
    comment: |
      Set the name of the directory in which sockets will be found/created.
    value: '/var/run/libvirt'
    section: 'unix-socket'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'auth_unix_ro'  # [[[
    comment: |
      Set an authentication scheme for UNIX read-only sockets
      By default socket permissions allow anyone to connect

      To restrict monitoring of domains you may wish to enable
      an authentication mechanism here
    value: 'none'
    section: 'authn'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'auth_unix_rw'  # [[[
    comment: |
      Set an authentication scheme for UNIX read-write sockets
      By default socket permissions only allow root. If PolicyKit
      support was compiled into libvirt, the default will be to
      use 'polkit' auth.

      If the unix_sock_rw_perms are changed you may wish to enable
      an authentication mechanism here
    value: 'none'
    section: 'authn'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'auth_tcp'  # [[[
    comment: |
      Change the authentication scheme for TCP sockets.

      If you don't enable SASL, then all TCP traffic is cleartext.
      Don't do this outside of a dev/test scenario. For real world
      use, always enable SASL and use the GSSAPI or DIGEST-MD5
      mechanism in /etc/sasl2/libvirt.conf
    value: 'sasl'
    section: 'authn'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'auth_tls'  # [[[
    comment: |
      Change the authentication scheme for TLS sockets.

      TLS sockets already have encryption provided by the TLS
      layer, and limited authentication is done by certificates

      It is possible to make use of any SASL authentication
      mechanism as well, by using 'sasl' for this option
    value: 'none'
    section: 'authn'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'access_drivers'  # [[[
    comment: |
      Change the API access control scheme

      By default an authenticated user is allowed access
      to all APIs. Access drivers can place restrictions
      on this. By default the 'nop' driver is enabled,
      meaning no access control checks are done once a
      client has authenticated with libvirtd
    value: [ 'polkit' ]
    section: 'authn'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'key_file'  # [[[
    comment: |
      Override the default server key file path
    value: '/etc/pki/libvirt/private/serverkey.pem'
    section: 'tls-cert'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'cert_file'  # [[[
    comment: |
      Override the default server certificate file path
    value: '/etc/pki/libvirt/servercert.pem'
    section: 'tls-cert'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'ca_file'  # [[[
    comment: |
      Override the default CA certificate path
    value: '/etc/pki/CA/cacert.pem'
    section: 'tls-cert'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'crl_file'  # [[[
    comment: |
      Specify a certificate revocation list.
      Defaults to not using a CRL, uncomment to enable it
    value: '/etc/pki/CA/crl.pem'
    section: 'tls-cert'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'tls_no_sanity_certificate'  # [[[
    comment: |
      Flag to disable verification of our own server certificates

      When libvirtd starts it performs some sanity checks against
      its own certificates.

      Default is to always run sanity checks. Uncommenting this
      will disable sanity checks which is not a good idea
    value: True
    section: 'authz'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'tls_no_verify_certificate'  # [[[
    comment: |
      Flag to disable verification of client certificates

      Client certificate verification is the primary authentication mechanism.
      Any client which does not present a certificate signed by the CA
      will be rejected.

      Default is to always verify. Uncommenting this will disable
      verification - make sure an IP whitelist is set
    value: True
    section: 'authz'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'tls_allowed_dn_list'  # [[[
    comment: |
      A whitelist of allowed x509 Distinguished Names
      This list may contain wildcards such as

        "C=GB,ST=London,L=London,O=Red Hat,CN=*"

      See the POSIX fnmatch function for the format of the wildcards.

      NB If this is an empty list, no client can connect, so comment out
      entirely rather than using empty list to disable these checks

      By default, no DNs are checked
    value: [ 'DN1', 'DN2' ]
    section: 'authz'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'sasl_allowed_username_list'  # [[[
    comment: |
      A whitelist of allowed SASL usernames. The format for username
      depends on the SASL authentication mechanism. Kerberos usernames
      look like username@REALM

      This list may contain wildcards such as

        "*@EXAMPLE.COM"

      See the POSIX fnmatch function for the format of the wildcards.

      NB If this is an empty list, no client can connect, so comment out
      entirely rather than using empty list to disable these checks

      By default, no Usernames are checked
    value: [ 'joe@EXAMPLE.COM', 'fred@EXAMPLE.COM' ]
    section: 'authz'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'tls_priority'  # [[[
    comment: |
      Override the compile time default TLS priority string. The
      default is usually "NORMAL" unless overridden at build time.
      Only set this is it is desired for libvirt to deviate from
      the global default settings.
    value: 'NORMAL'
    section: 'authz'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'max_clients'  # [[[
    comment: |
      The maximum number of concurrent client connections to allow
      over all sockets combined.
    value: 5000
    section: 'proc'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'max_queued_clients'  # [[[
    comment: |
      The maximum length of queue of connections waiting to be
      accepted by the daemon. Note, that some protocols supporting
      retransmission may obey this so that a later reattempt at
      connection succeeds.
    value: 1000
    section: 'proc'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'max_anonymous_clients'  # [[[
    comment: |
      The maximum length of queue of accepted but not yet
      authenticated clients. The default value is 20. Set this to
      zero to turn this feature off.
    value: 20
    section: 'proc'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'min_workers'  # [[[
    comment: |
      The minimum limit sets the number of workers to start up
      initially. If the number of active clients exceeds this,
      then more threads are spawned, up to max_workers limit.
      Typically you would want max_workers to equal maximum
      number of clients allowed.
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'max_workers'  # [[[
    value: 20
    section: 'proc'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'prio_workers'  # [[[
    comment: |
      The number of priority workers. If all workers from above
      pool are stuck, some calls marked as high priority
      (notably domainDestroy) can be executed in this pool.
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 6  # ]]]

  - name: 'max_requests'  # [[[
    comment: |
      Total global limit on concurrent RPC calls. Should be
      at least as large as max_workers. Beyond this, RPC requests
      will be read into memory and queued. This directly impacts
      memory usage, currently each request requires 256 KB of
      memory. So by default up to 5 MB of memory is used

      XXX this is not actually enforced yet, only the per-client
      limit is used so far
    value: 20
    section: 'proc'
    state: 'comment'
    weight: 7  # ]]]

  - name: 'max_client_requests'  # [[[
    comment: |
      Limit on concurrent requests from a single client
      connection. To avoid one client monopolizing the server
      this should be a small fraction of the global max_requests
      and max_workers parameter
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 8  # ]]]

  - name: 'admin_min_workers'  # [[[
    comment: |
      Same processing controls, but this time for the admin interface.
      For description of each option, be so kind to scroll few lines
      upwards.
    value: 1
    section: 'proc'
    state: 'comment'
    weight: 9  # ]]]

  - name: 'admin_max_workers'  # [[[
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 10  # ]]]

  - name: 'admin_max_clients'  # [[[
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 11  # ]]]

  - name: 'admin_max_queued_clients'  # [[[
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 12  # ]]]

  - name: 'admin_max_client_requests'  # [[[
    value: 5
    section: 'proc'
    state: 'comment'
    weight: 13  # ]]]

  - name: 'log_level'  # [[[
    comment: |
      Logging level: 4 errors, 3 warnings, 2 information, 1 debug
      basically 1 will log everything possible
      Note: Journald may employ rate limiting of the messages logged
      and thus lock up the libvirt daemon. To use the debug level with
      journald you have to specify it explicitly in 'log_outputs', otherwise
      only information level messages will be logged.
    value: 3
    section: 'log'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'log_filters'  # [[[
    comment: |
      Logging filters:
      A filter allows to select a different logging level for a given category
      of logs
      The format for a filter is one of:
        x:name
        x:+name

          where name is a string which is matched against the category
          given in the VIR_LOG_INIT() at the top of each libvirt source
          file, e. g., "remote", "qemu", or "util.json" (the name in the
          filter can be a substring of the full category name, in order
          to match multiple similar categories), the optional "+" prefix
          tells libvirt to log stack trace for each message matching
          name, and x is the minimal level where matching messages should
          be logged:

        1: DEBUG
        2: INFO
        3: WARNING
        4: ERROR

      Multiple filters can be defined in a single @filters, they just need to be
      separated by spaces.

      e. g. to only get warning or errors from the remote layer and only errors
      from the event layer:
    value: '3:remote 4:event'
    section: 'log'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'log_outputs'  # [[[
    comment: |
      Logging outputs:
      An output is one of the places to save logging information
      The format for an output can be:
        x:stderr
          output goes to stderr
        x:syslog:name
          use syslog for the output and use the given name as the ident
        x:file:file_path
          output to a file, with the given filepath
        x:journald
          output to journald logging system
      In all case the x prefix is the minimal level, acting as a filter
        1: DEBUG
        2: INFO
        3: WARNING
        4: ERROR

      Multiple outputs can be defined, they just need to be separated by spaces.
      e. g. to log all warnings and errors to syslog under the libvirtd ident:
    value: '3:syslog:libvirtd'
    section: 'log'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'log_buffer_size'  # [[[
    comment: |
      Log debug buffer size:

      This configuration option is no longer used, since the global
      log buffer functionality has been removed. Please configure
      suitable log_outputs/log_filters settings to obtain logs.
    value: 64
    section: 'log'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'audit_level'  # [[[
    comment: |
      This setting allows usage of the auditing subsystem to be altered:

        audit_level == 0  -> disable all auditing
        audit_level == 1  -> enable auditing, only if enabled on host (default)
        audit_level == 2  -> enable auditing, and exit if disabled on host
    value: 2
    section: 'audit'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'audit_logging'  # [[[
    comment: |
      If set to 1, then audit messages will also be sent
      via libvirt logging infrastructure. Defaults to 0
    value: True
    section: 'audit'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'host_uuid'  # [[[
    comment: |
      Host UUID is read from one of the sources specified in host_uuid_source.

      - 'smbios': fetch the UUID from 'dmidecode -s system-uuid'
      - 'machine-id': fetch the UUID from /etc/machine-id

      The host_uuid_source default is 'smbios'. If 'dmidecode' does not provide
      a valid UUID a temporary UUID will be generated.

      Another option is to specify host UUID in host_uuid.

      Keep the format of the example UUID below. UUID must not have all digits
      be the same.

      NB This default all-zeros UUID will not work. Replace
      it with the output of the 'uuidgen' command and then
      uncomment this entry
    value: '00000000-0000-0000-0000-000000000000'
    section: 'uuid'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'host_uuid_source'  # [[[
    value: 'smbios'
    section: 'uuid'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'keepalive_interval'  # [[[
    comment: |
      This allows libvirtd to detect broken client connections or even
      dead clients.  A keepalive message is sent to a client after
      keepalive_interval seconds of inactivity to check if the client is
      still responding; keepalive_count is a maximum number of keepalive
      messages that are allowed to be sent to the client without getting
      any response before the connection is considered broken.  In other
      words, the connection is automatically closed approximately after
      keepalive_interval * (keepalive_count + 1) seconds since the last
      message received from the client.  If keepalive_interval is set to
      -1, libvirtd will never send keepalive requests; however clients
      can still send them and the daemon will send responses.  When
      keepalive_count is set to 0, connections will be automatically
      closed after keepalive_interval seconds of inactivity without
      sending any keepalive messages.
    value: 5
    section: 'keepalive'
    state: 'comment'
    weight: 1  # ]]]

  - name: 'keepalive_count'  # [[[
    value: 5
    section: 'keepalive'
    state: 'comment'
    weight: 2  # ]]]

  - name: 'keepalive_required'  # [[[
    comment: |
      These configuration options are no longer used.  There is no way to
      restrict such clients from connecting since they first need to
      connect in order to ask for keepalive.
    value: True
    section: 'keepalive'
    state: 'comment'
    weight: 3  # ]]]

  - name: 'admin_keepalive_required'  # [[[
    value: True
    section: 'keepalive'
    state: 'comment'
    weight: 4  # ]]]

  - name: 'admin_keepalive_interval'  # [[[
    comment: |
      Keepalive settings for the admin interface
    value: 5
    section: 'keepalive'
    state: 'comment'
    weight: 5  # ]]]

  - name: 'admin_keepalive_count'  # [[[
    value: 5
    section: 'keepalive'
    state: 'comment'
    weight: 6  # ]]]

libvirtd__default_configuration¶

List of libvirtd configuration options which are changed from their original values by the role.

libvirtd__default_configuration:

  - 'unix_sock_group':    '{{ libvirtd__unix_sock_group }}'
    'unix_sock_ro_perms': '0770'
    'unix_sock_rw_perms': '0770'

  # Ref: https://forum.opennebula.org/t/polkitd-traps-general-protection-ip-in-libmozjs-17-0-so/399/3
  - name: 'auth_unix_ro'
    value: 'none'
    state: '{{ "present"
               if (libvirtd__deployment_mode == "opennebula")
               else "ignore" }}'

  # Ref: https://forum.opennebula.org/t/polkitd-traps-general-protection-ip-in-libmozjs-17-0-so/399/3
  - name: 'auth_unix_rw'
    value: 'none'
    state: '{{ "present"
               if (libvirtd__deployment_mode == "opennebula")
               else "ignore" }}'

libvirtd__configuration¶

List of libvirtd configuration options which should be set on all hosts in the Ansible inventory.

libvirtd__configuration: []

libvirtd__group_configuration¶

List of libvirtd configuration options which should be set on hosts in specific Ansible inventory group.

libvirtd__group_configuration: []

libvirtd__host_configuration¶

List of libvirtd configuration options which should be set on specific hosts in the Ansible inventory.

libvirtd__host_configuration: []

libvirtd__combined_configuration¶

Variable which combines all of the configuration lists and passes them to the configuration file template for processing.

libvirtd__combined_configuration: '{{ libvirtd__original_configuration
                                      + libvirtd__default_configuration
                                      + libvirtd__configuration
                                      + libvirtd__group_configuration
                                      + libvirtd__host_configuration }}'

libvirtd__configuration_sections¶

List which defines what sections are present in the /etc/libvirt/libvirtd.conf configuration file. See libvirtd__configuration_sections for more details.

libvirtd__configuration_sections:

  - name: 'network'
    title: 'Network connectivity controls'

  - name: 'unix-socket'
    title: 'UNIX socket access controls'

  - name: 'authn'
    title: 'Authentication'
    comment: |
      - none: do not perform auth checks. If you can connect to the
              socket you are allowed. This is suitable if there are
              restrictions on connecting to the socket (eg, UNIX
              socket permissions), or if there is a lower layer in
              the network providing auth (eg, TLS/x509 certificates)

      - sasl: use SASL infrastructure. The actual auth scheme is then
              controlled from /etc/sasl2/libvirt.conf. For the TCP
              socket only GSSAPI & DIGEST-MD5 mechanisms will be used.
              For non-TCP or TLS sockets, any scheme is allowed.

      - polkit: use PolicyKit to authenticate. This is only suitable
                for use on the UNIX sockets. The default policy will
                require a user to supply their own password to gain
                full read/write access (aka sudo like), while anyone
                is allowed read/only access.


  - name: 'tls-cert'
    title: 'TLS X.509 certificate configuration'

  - name: 'authz'
    title: 'Authorization controls'

  - name: 'proc'
    title: 'Processing controls'

  - name: 'log'
    title: 'Logging controls'

  - name: 'audit'
    title: 'Auditing controls'

  - name: 'uuid'
    title: 'UUID of the host'

  - name: 'keepalive'
    title: 'Keepalive protocol'

  - name: 'unknown'
    title: 'Other parameters'

KSM (Kernel Samepage Merging) configuration ¶

libvirtd__ksm_enabled¶

Whether to enable KSM.

libvirtd__ksm_enabled: False

libvirtd__ksm_sleep_milisecs¶

How long to sleep in between page scans.

libvirtd__ksm_sleep_milisecs: 20

libvirtd__ksm_pages_to_scan¶

How many pages to scan in one run.

libvirtd__ksm_pages_to_scan: 100

Firewall configuration ¶

libvirtd__ferm_post_hook¶

Enable or disable installation of the ferm post hook.

libvirtd__ferm_post_hook: '{{ True
                              if (ansible_local|d() and ansible_local.ferm|d() and
                                  (ansible_local.ferm.enabled|d())|bool)
                              else False }}'

Configuration for other Ansible roles ¶

libvirtd__apt_preferences__dependent_list¶

Configuration for the debops.apt_preferences role.

libvirtd__apt_preferences__dependent_list:

  - packages: [ 'libvirt0', 'libvirt0-dbg', 'libvirt-*',
                'libspice-server1', 'libusb-1.0-0',
                'qemu', 'qemu-*', 'seabios', 'ipxe-qemu' ]
    backports: [ 'wheezy', 'jessie' ]
    reason: 'Ensure that virtual machines can be migrated between different OS releases'
    by_role: 'debops.libvirtd'

libvirtd__ferm__dependent_rules¶

Configuration for debops.ferm firewall.

libvirtd__ferm__dependent_rules:

  - type: 'custom'
    filename: 'bootpc_checksum'
    weight: '30'
    rules: |
      # Add checksums to BOOTP packets from virtual machines and containers.
      # https://www.redhat.com/archives/libvir-list/2010-August/msg00035.html
      @hook post "iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill";

  - type: 'custom'
    filename: 'reload_libvirt'
    weight: 'zz'
    rules: '@hook post "type libvirtd > /dev/null && (systemctl reload libvirtd || true)";'
    state: 'absent'

libvirtd__python__dependent_packages3¶

Configuration for the debops.python Ansible role.

libvirtd__python__dependent_packages3:

  - 'python3-libvirt'

libvirtd__python__dependent_packages2¶

Configuration for the debops.python Ansible role.

libvirtd__python__dependent_packages2:

  - 'python-libvirt'

libvirtd__nsswitch__dependent_services¶

Configuration for the debops.nsswitch Ansible role.

libvirtd__nsswitch__dependent_services: [ 'libvirt', 'libvirt_guest' ]