Comment 3 for bug 1547564

Make sure you have the [ironic] section of nova.conf configured properly:

[ironic]

#
# From nova.conf
#

# Version of Ironic API service endpoint. DEPRECATED: Setting the API version
# is not possible anymore. (integer value)
# This option is deprecated for removal.
# Its value may be silently ignored in the future.
#api_version = 1

# URL for Ironic API endpoint. (string value)
#api_endpoint = <None>

# Ironic keystone admin name (string value)
#admin_username = <None>

# Ironic keystone admin password. (string value)
#admin_password = <None>

# Ironic keystone auth token.DEPRECATED: use admin_username, admin_password,
# and admin_tenant_name instead (string value)
# This option is deprecated for removal.
# Its value may be silently ignored in the future.
#admin_auth_token = <None>

# Keystone public API endpoint. (string value)
#admin_url = <None>

# PEM encoded Certificate Authority to use when verifying HTTPs connections.
# (string value)
#cafile = <None>

# Log level override for ironicclient. Set this in order to override the global
# "default_log_levels", "verbose", and "debug" settings. DEPRECATED: use
# standard logging configuration. (string value)
# This option is deprecated for removal.
# Its value may be silently ignored in the future.
#client_log_level = <None>

# Ironic keystone tenant name. (string value)
#admin_tenant_name = <None>

# How many retries when a request does conflict. If <= 0, only try once, no
# retries. (integer value)
#api_max_retries = 60

# How often to retry in seconds when a request does conflict (integer value)
#api_retry_interval = 2