Puppet Class: nova::compute::libvirt_guests
- Defined in:
- manifests/compute/libvirt_guests.pp
Overview
Class: nova::compute::libvirt_guests
manages configuration for starting running instances when compute node gets rebooted.
Parameters:
- enabled
-
(optional) Whether the libvirt-guests service will be run Defaults to false
- package_ensure
-
(optional) The state of libvirt packages Defaults to ‘present’
- on_boot
-
(optional) libvirt-guests parameter - action taken on host boot
-
start all guests which were running on shutdown are started on boot
regardless on their autostart settings -
ignore libvirt-guests init script won’t start any guest on boot, however,
guests marked as autostart will still be automatically started by libvirtd
Defaults to ‘ignore’
-
- on_shutdown
-
(optional) libvirt-guests parameter - action taken on host shutdown
-
suspend all running guests are suspended using virsh managedsave
-
shutdown all running guests are asked to shutdown. Please be careful with
this settings since there is no way to distinguish between a guest which is stuck or ignores shutdown requests and a guest which just needs a long time to shutdown. When setting ON_SHUTDOWN=shutdown, you must also set SHUTDOWN_TIMEOUT to a value suitable for your guests.
Defaults to ‘shutdown’
-
- start_delay
-
(optional) Number of seconds to wait between each guest start. Set 0 to allow parallel startup. Defaults to undef
- parallel_shutdown
-
(optional) Number of guests will be shutdown concurrently, taking effect when “ON_SHUTDOWN” is set to “shutdown”. If set to 0, guests will be shutdown one after another. Number of guests on shutdown at any time will not exceed number set in this variable. Defaults to undef
- shutdown_timeout
-
(optional) Number of seconds we’re willing to wait for a guest to shut down. If parallel shutdown is enabled, this timeout applies as a timeout for shutting down all guests on a single URI defined in the variable URIS. If this is 0, then there is no time out (use with caution, as guests might not respond to a shutdown request). Defaults to undef
- bypass_cache
-
(optional) Try to bypass the file system cache when saving and restoring guests, even though this may give slower operation for some file systems. Defaults to false
- sync_time
-
(optional) Try to sync guest time on domain resume. Be aware, that this requires guest agent support for time synchronization running in the guest. Defaults to false
- manage_service
-
(optional) Whether to start/stop the service Defaults to false
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# File 'manifests/compute/libvirt_guests.pp', line 70
class nova::compute::libvirt_guests (
Boolean $enabled = false,
$package_ensure = 'present',
Enum['start', 'ignore'] $on_boot = 'ignore',
Enum['suspend', 'shutdown'] $on_shutdown = 'shutdown',
Optional[Integer[0]] $start_delay = undef,
Optional[Integer[0]] $parallel_shutdown = undef,
Optional[Integer[0]] $shutdown_timeout = undef,
Boolean $bypass_cache = false,
Boolean $sync_time = false,
Boolean $manage_service = false,
) {
include nova::params
include nova::deps
Anchor['nova::config::begin']
-> File<| tag =='libvirt-guests-file' |>
-> File_line<| tag == 'libvirt-guests-file_line'|>
-> Anchor['nova::config::end']
# NOTE(tkajinam): The environment file is not present in CentOS/RHEL
file { $::nova::params::libvirt_guests_environment_file:
ensure => present,
path => $::nova::params::libvirt_guests_environment_file,
tag => 'libvirt-guests-file',
}
file_line { 'libvirt-guests ON_BOOT':
path => $::nova::params::libvirt_guests_environment_file,
line => "ON_BOOT=${on_boot}",
match => '^ON_BOOT=.*',
tag => 'libvirt-guests-file_line',
}
file_line { 'libvirt-guests ON_SHUTDOWN':
path => $::nova::params::libvirt_guests_environment_file,
line => "ON_SHUTDOWN=${on_shutdown}",
match => '^ON_SHUTDOWN=.*',
tag => 'libvirt-guests-file_line',
}
if $start_delay {
file_line { 'libvirt-guests START_DELAY':
path => $::nova::params::libvirt_guests_environment_file,
line => "START_DELAY=${start_delay}",
match => '^START_DELAY=.*',
tag => 'libvirt-guests-file_line',
}
} else {
file_line { 'libvirt-guests START_DELAY':
ensure => absent,
path => $::nova::params::libvirt_guests_environment_file,
match => '^START_DELAY=.*',
match_for_absence => true,
tag => 'libvirt-guests-file_line',
}
}
if $parallel_shutdown {
file_line { 'libvirt-guests PARALLEL_SHUTDOWN':
path => $::nova::params::libvirt_guests_environment_file,
line => "PARALLEL_SHUTDOWN=${parallel_shutdown}",
match => '^PARALLEL_SHUTDOWN=.*',
tag => 'libvirt-guests-file_line',
}
} else {
file_line { 'libvirt-guests PARALLEL_SHUTDOWN':
ensure => absent,
path => $::nova::params::libvirt_guests_environment_file,
match => '^PARALLEL_SHUTDOWN=.*',
match_for_absence => true,
tag => 'libvirt-guests-file_line',
}
}
if $shutdown_timeout {
file_line { 'libvirt-guests SHUTDOWN_TIMEOUT':
path => $::nova::params::libvirt_guests_environment_file,
line => "SHUTDOWN_TIMEOUT=${shutdown_timeout}",
match => '^SHUTDOWN_TIMEOUT=.*',
tag => 'libvirt-guests-file_line',
}
} else {
file_line { 'libvirt-guests SHUTDOWN_TIMEOUT':
ensure => absent,
path => $::nova::params::libvirt_guests_environment_file,
match => '^SHUTDOWN_TIMEOUT=.*',
match_for_absence => true,
tag => 'libvirt-guests-file_line',
}
}
if $bypass_cache {
file_line { 'libvirt-guests BYPASS_CACHE':
path => $::nova::params::libvirt_guests_environment_file,
line => 'BYPASS_CACHE=1',
match => '^BYPASS_CACHE=.*',
tag => 'libvirt-guests-file_line',
}
} else {
file_line { 'libvirt-guests BYPASS_CACHE':
ensure => absent,
path => $::nova::params::libvirt_guests_environment_file,
match => '^BYPASS_CACHE=.*',
match_for_absence => true,
tag => 'libvirt-guests-file_line',
}
}
if $sync_time {
file_line { 'libvirt-guests SYNC_TIME':
path => $::nova::params::libvirt_guests_environment_file,
line => 'SYNC_TIME=1',
match => '^SYNC_TIME=.*',
tag => 'libvirt-guests-file_line',
}
} else {
file_line { 'libvirt-guests SYNC_TIME':
ensure => absent,
path => $::nova::params::libvirt_guests_environment_file,
match => '^SYNC_TIME=.*',
match_for_absence => true,
tag => 'libvirt-guests-file_line',
}
}
package { 'libvirt-client':
ensure => $package_ensure,
name => $::nova::params::libvirt_client_package_name,
tag => ['openstack', 'nova-support-package'],
}
if $manage_service {
if $enabled {
$service_ensure = 'running'
} else {
$service_ensure = 'stopped'
}
# NOTE(tkajinam): libvirt-service tag should NOT be added here, because
# any update in libvirt config files does not require
# restarting the libvirt-service. All guests running in
# this node are shut off if the service is restarted.
service { 'libvirt-guests':
ensure => $service_ensure,
name => $::nova::params::libvirt_guests_service_name,
enable => $enabled,
require => Anchor['nova::service::begin'],
notify => Anchor['nova::service::end']
}
}
}
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