Chapter 15. Compute (nova) Parameters

DatabaseSyncTimeout

Database synchronization timeout default. The default value is: 300

EnableConfigPurge

Remove configuration that is not generated by the director. Used to avoid configuration remnants after upgrades. The default value is: False

InstanceNameTemplate

Template string to be used to generate instance names. The default value is: instance-%08x

InternalTLSCAFile

Specifies the default CA cert to use if TLS is used for services in the internal network. The default value is: /etc/ipa/ca.crt

LibvirtCACert

This specifies the CA certificate to use for TLS in libvirt. This file will be symlinked to the default CA path in libvirt, which is /etc/pki/CA/cacert.pem. Note that due to limitations GNU TLS, which is the TLS backend for libvirt, the file must be less than 65K (so we can’t use the system’s CA bundle). This parameter should be used if the default (which comes from the InternalTLSCAFile parameter) is not desired. The current default reflects TripleO’s default CA, which is FreeIPA. It will only be used if internal TLS is enabled.

LibvirtEnabledPerfEvents

This is a performance event list which could be used as monitor. For example: cmt,mbml,mbmt. Make sure you are using Red Hat Enterprise Linux 7.4 as the base and libvirt version is 1.3.3 or above. Also ensure you have enabled the notifications and are using hardware with a CPU that supports the cmt flag.

LibvirtTLSPassword

The password for the libvirt service when TLS is enabled.

MigrationSshKey

SSH key for migration. Expects a dictionary with keys public_key and private_key. Values should be identical to SSH public/private key files. The default value is: {'public_key': '', 'private_key': ''}

MigrationSshPort

Target port for migration over ssh. The default value is: 2022

NeutronMetadataProxySharedSecret

Shared secret to prevent spoofing.

NotificationDriver

Driver or drivers to handle sending notifications. The default value is: messagingv2

NovaComputeLibvirtType

Libvirt domain type. Defaults to kvm.

NovaComputeLibvirtVifDriver

Libvirt VIF driver configuration for the network.

NovaCronArchiveDeleteRowsDestination

Cron to move deleted instances to another table - Log destination. The default value is: /var/log/nova/nova-rowsflush.log

NovaCronArchiveDeleteRowsHour

Cron to move deleted instances to another table - Hour. The default value is: 0

NovaCronArchiveDeleteRowsMaxRows

Cron to move deleted instances to another table - Max Rows. The default value is: 100

NovaCronArchiveDeleteRowsMinute

Cron to move deleted instances to another table - Minute. The default value is: 1

NovaCronArchiveDeleteRowsMonth

Cron to move deleted instances to another table - Month. The default value is: *

NovaCronArchiveDeleteRowsMonthday

Cron to move deleted instances to another table - Month Day. The default value is: *

NovaCronArchiveDeleteRowsUntilComplete

Cron to move deleted instances to another table - Until complete. The default value is: False

NovaCronArchiveDeleteRowsUser

Cron to move deleted instances to another table - User. The default value is: nova

NovaCronArchiveDeleteRowsWeekday

Cron to move deleted instances to another table - Week Day. The default value is: *

NovaDbSyncTimeout

Timeout for OpenStack Compute (nova) database synchronization in seconds. The default value is: 300

NovaDefaultFloatingPool

Default pool for floating IP addresses. The default value is: public

NovaEnableDBPurge

Whether to create cron job for purging soft deleted rows in OpenStack Compute (nova) database. The default value is: True

NovaIPv6

Enable IPv6 features for OpenStack Compute (nova). The default is: false

NovaOVSBridge

Name of integration bridge used by Open vSwitch. The default value is: br-int

NovaPCIPassthrough

YAML list of PCI passthrough whitelist parameters.

NovaPassword

The password for the OpenStack Compute (nova) service and database account.

NovaPlacementAPIInterface

Endpoint interface to be used for the placement API. The default value is: internal

NovaReservedHostMemory

Reserved RAM for host processes. The default value is: 4096

NovaSchedulerAvailableFilters

List of available filters for OpenStack Compute (nova) to use to filter nodes.

NovaSchedulerDefaultFilters

An array of filters OpenStack Compute (nova) uses to filter a node. OpenStack Compute applies these filters in the order they are listed. Place your most restrictive filters first to make the filtering process more efficient.

NovaSchedulerDiscoverHostsInCellsInterval

This value controls how often (in seconds) the scheduler should attempt to discover new hosts that have been added to cells. The default value of -1 disables the periodic task completely. It is recommended to set this parameter for deployments using OpenStack Bare Metal (ironic). The default value is: -1

NovaVcpuPinSet

A list or range of physical CPU cores to reserve for virtual machine processes. For example, NovaVcpuPinSet: [4-12,^8] reserves cores from 4-12 excluding 8.

NovaWorkers

Number of workers for the Compute’s Conductor service. The default value is: 0. Note that more workers creates a larger number of processes on systems, which results in excess memory consumption.

UpgradeLevelNovaCompute

OpenStack Compute upgrade level. The default value is: auto