Configuration

This guide covers manual configuration of the Bare Metal service in the standalone mode. Alternatively, Bifrost can be used for automatic configuration.

Service settings

It is possible to use the Bare Metal service without other OpenStack services. You should make the following changes to /etc/ironic/ironic.conf:

1. Choose an authentication strategy which supports standalone, one option is noauth:

   [DEFAULT]
   auth_strategy=noauth
   

   Another option is http_basic where the credentials are stored in an Apache htpasswd format file:

   [DEFAULT]
   auth_strategy=http_basic
   http_basic_auth_user_file=/etc/ironic/htpasswd
   

   Only the bcrypt format is supported, and the Apache htpasswd utility can be used to populate the file with entries, for example:

   htpasswd -nbB myName myPassword >> /etc/ironic/htpasswd
   

2. If you want to disable the Networking service, you should have your network pre-configured to serve DHCP and TFTP for machines that you’re deploying. To disable it, change the following lines:

   [dhcp]
   dhcp_provider=none
   

   Note

   If you disabled the Networking service and the driver that you use is supported by at most one conductor, PXE boot will still work for your nodes without any manual config editing. This is because you know all the DHCP options that will be used for deployment and can set up your DHCP server appropriately.

   If you have multiple conductors per driver, it would be better to use Networking since it will do all the dynamically changing configurations for you.

3. If you want to disable using a messaging broker between conductor and API processes, switch to JSON RPC instead:

   [DEFAULT]
   rpc_transport = json-rpc
   

   JSON RPC also has its own authentication strategy. If it is not specified then the stategy defaults to [DEFAULT] auth_strategy. The following will set JSON RPC to noauth:

   [json_rpc]
   auth_strategy = noauth
   

   For http_basic the conductor server needs a credentials file to validate requests:

   [json_rpc]
   auth_strategy = http_basic
   http_basic_auth_user_file = /etc/ironic/htpasswd-json-rpc
   

   The API server also needs client-side credentials to be specified:

   [json_rpc]
   auth_type = http_basic
   username = myName
   password = myPassword
   

4. Starting with the Yoga release series, you can use a combined API+conductor service and completely disable the RPC. Set

   [DEFAULT]
   rpc_transport = none
   

   and use the ironic executable to start the combined service.

   Note

   The combined service also works with RPC enabled, which can be useful for some deployments, but may not be advisable for all security models.

Using CLI

To use the baremetal CLI, set up these environment variables. If the noauth authentication strategy is being used, the value none must be set for OS_AUTH_TYPE. OS_ENDPOINT is the URL of the ironic-api process. For example:

export OS_AUTH_TYPE=none
export OS_ENDPOINT=http://localhost:6385/

If the http_basic authentication strategy is being used, the value http_basic must be set for OS_AUTH_TYPE. For example:

export OS_AUTH_TYPE=http_basic
export OS_ENDPOINT=http://localhost:6385/
export OS_USERNAME=myUser
export OS_PASSWORD=myPassword