These comments apply to any installer we have or will have. Tempest has a number of configuration options (listed below) for features whose presence can not be discovered through apis. When the installer configures tempest, it must specify these values in tempest.conf if they are different from the defaults. The installer should write the required values to a file in tempest.conf format and then pass it to the config_tempest script using the --deployer-input command line argument. This file then needs to be "exported" so that users can do the same to run tempest against the cloud after installation. 

The specific values needed will change from release to release as new features are added to OpenStack. Also, in the future when a cloud is upgraded to a new major rhel osp version, new values will have to be supplied and a new partial tempest.conf exported.

Most, but not all, of these values appear in tempest.conf sections with the format [<service-name>-feature-enabled]

Current values and defaults as of kilo, from etc/tempest.conf.sample in the tempest repo:

[compute-feature-enabled]
# Does the test environment support changing the admin password?
# (boolean value)
#change_password = false

# Does the test environment support obtaining instance serial console
# output? (boolean value)
#console_output = true

# Does the test environment support resizing? (boolean value)
#resize = false

# Does the test environment support pausing? (boolean value)
#pause = true

# Does the test environment support shelving/unshelving? (boolean
# value)
#shelve = true

# Does the test environment support suspend/resume? (boolean value)
#suspend = true

# Does the test environment support live migration available? (boolean
# value)
#live_migration = true

# Does the test environment use block devices for live migration
# (boolean value)
#block_migration_for_live_migration = false

# Does the test environment block migration support cinder iSCSI
# volumes. Note, libvirt doesn't support this, see
# https://bugs.launchpad.net/nova/+bug/1398999 (boolean value)
#block_migrate_cinder_iscsi = false

# Does the test system allow live-migration of paused instances? Note,
# this is more than just the ANDing of paused and live_migrate, but
# all 3 should be set to True to run those tests (boolean value)
#live_migrate_paused_instances = false

# Enable VNC console. This configuration value should be same as
# [nova.vnc]->vnc_enabled in nova.conf (boolean value)
#vnc_console = false

# Enable Spice console. This configuration value should be same as
# [nova.spice]->enabled in nova.conf (boolean value)
#spice_console = false

# Enable RDP console. This configuration value should be same as
# [nova.rdp]->enabled in nova.conf (boolean value)
#rdp_console = false

# Does the test environment support instance rescue mode? (boolean
# value)
#rescue = true

# Enables returning of the instance password by the relevant server
# API calls such as create, rebuild or rescue. (boolean value)
#enable_instance_password = true

# Does the test environment support dynamic network interface
# attachment? (boolean value)
#interface_attach = true

# Does the test environment support creating snapshot images of
# running instances? (boolean value)
#snapshot = true

# Does the test environment have the ec2 api running? (boolean value)
#ec2_api = true

# Does Nova preserve preexisting ports from Neutron when deleting an
# instance? This should be set to True if testing Kilo+ Nova. (boolean
# value)
#preserve_ports = false

[identity-feature-enabled]

# Does the identity service have delegation and impersonation enabled
# (boolean value)
#trust = true

# Is the v2 identity API enabled (boolean value)
#api_v2 = true

# Is the v3 identity API enabled (boolean value)
#api_v3 = true

[image-feature-enabled]

# Is the v2 image API enabled (boolean value)
#api_v2 = true

# Is the v1 image API enabled (boolean value)
#api_v1 = true

[network-feature-enabled]


# Allow the execution of IPv6 tests (boolean value)
#ipv6 = true

# A list of enabled network extensions with a special entry all which
# indicates every extension is enabled. Empty list indicates all
# extensions are disabled (list value)
#api_extensions = all

# Allow the execution of IPv6 subnet tests that use the extended IPv6
# attributes ipv6_ra_mode and ipv6_address_mode (boolean value)
#ipv6_subnet_attributes = false

# Does the test environment support changing port admin state (boolean
# value)
#port_admin_state_change = true

[volume]

# Name of the backend1 (must be declared in cinder.conf) (string
# value)
#backend1_name = BACKEND_1

# Name of the backend2 (must be declared in cinder.conf) (string
# value)
#backend2_name = BACKEND_2

# Backend protocol to target when creating volume types (string value)
#storage_protocol = iSCSI

# Backend vendor to target when creating volume types (string value)
#vendor_name = Open Source


[volume-feature-enabled]

# Runs Cinder multi-backend test (requires 2 backends) (boolean value)
#multi_backend = false

# Runs Cinder volumes backup test (boolean value)
#backup = true

# Runs Cinder volume snapshot test (boolean value)
#snapshot = true

# Is the v1 volume API enabled (boolean value)
#api_v1 = true

# Is the v2 volume API enabled (boolean value)
#api_v2 = true

# Update bootable status of a volume Not implemented on icehouse
# (boolean value)
#bootable = false