The nova.conf configuration file is
an INI file format file that specifies options as
key=value pairs, which are grouped into
sections. The DEFAULT section contains most
of the configuration options. For example:
[DEFAULT] debug=true verbose=true [trusted_computing] server=10.3.4.2
You can use a particular configuration option file by using
the option (nova.conf)
parameter when you run one of the nova-*
services. This parameter inserts configuration option
definitions from the specified configuration file name, which
might be useful for debugging or performance tuning.
To place comments in the nova.conf
file, start a new line that begins with the pound
(#) character. For a list of
configuration options, see the tables in this guide.
To learn more about the nova.conf
configuration file, review the general purpose configuration
options documented in Table 2.19, “Description of configuration options for common”.
Each configuration option has an associated data type. The supported data types for configuration options are:
- BoolOpt
Boolean option. Value must be either
trueorfalse. Example:debug=false
- StrOpt
String option. Value is an arbitrary string. Example:
my_ip=10.0.0.1
- IntOption
Integer option. Value must be an integer. Example:
glance_port=9292
- MultiStrOpt
String option. Same as StrOpt, except that it can be declared multiple times to indicate multiple values. Example:
ldap_dns_servers=dns1.example.org ldap_dns_servers=dns2.example.org
- ListOpt
List option. Value is a list of arbitrary strings separated by commas. Example:
enabled_apis=ec2,osapi_compute,metadata
- FloatOpt
Floating-point option. Value must be a floating-point number. Example:
ram_allocation_ratio=1.5
![[Important]](../common/images/admon/important.png) | Important |
|---|---|
Do not specify quotes around Nova options. |
Configuration options are grouped by section. The Compute configuration file supports the following sections:
[DEFAULT]Contains most configuration options. If the documentation for a configuration option does not specify its section, assume that it appears in this section.
[cells]Configures cells functionality. For details, see the Cells section (../config-reference/content/section_compute-cells.html).
[baremetal]Configures the baremetal hypervisor driver.
[conductor]Configures the
nova-conductorservice.[trusted_computing]Configures the trusted computing pools functionality and how to connect to a remote attestation service.
The configuration file supports variable substitution.
After you set a configuration option, it can be referenced
in later configuration values when you precede it with
$. This example defines
my_ip and then uses
$my_ip as a
variable:
my_ip=10.2.3.4 glance_host=$my_ip metadata_host=$my_ip
If a value must contain the $
character, escape it with $$. For
example, if your LDAP DNS password is
$xkj432, specify it, as
follows:
ldap_dns_password=$$xkj432
The Compute code uses the Python
string.Template.safe_substitute()
method to implement variable substitution. For more
details on how variable substitution is resolved, see
http://docs.python.org/2/library/string.html#template-strings
and http://www.python.org/dev/peps/pep-0292/.
To include whitespace in a configuration value, use a quoted string. For example:
ldap_dns_passsword='a password with spaces'
All nova-*
services and the nova-manage
command-line client load the configuration file. To define
an alternate location for the configuration file, pass the
--config-file
parameter when you start a /path/to/nova.confnova-* service or call a
nova-manage command.
