Chapter 3. Role-Based Parameters You can modify the bevavior of specific overcloud composable roles with overcloud role-based parameters. Substitute _ROLE_ with the name of the role. For example, for _ROLE_Count use ControllerCount . Parameter Description _ROLE_AnyErrorsFatal Sets the any_errors_fatal value when running config-download Ansible playbooks. The default value is yes . _ROLE_ControlPlaneSubnet Name of the subnet on ctlplane network for this role. The default value is ctlplane-subnet . _ROLE_Count The number of nodes to deploy in a role. The default value is 1 . _ROLE_ExtraConfig Role specific additional hiera configuration to inject into the cluster. _ROLE_ExtraGroupVars Optional extra Ansible group vars. _ROLE_HostnameFormat Format for node hostnames. Note that %index% is translated into the index of the node (e.g 0/1/2) and %stackname% is replaced with the stack name (e.g overcloud ). The default value is %stackname%-_role_-%index% . _ROLE_IfcfgPurge When set to "True", os-net-config will remove the ifcfg-* provider based configurations and apply the same network_configuration using nmstate provider. This flag is intended to be used along with "_ROLE_UseNMState: True" ONLY for provider migration use-case. This is a role based parameter. The default value is False . _ROLE_LocalMtu MTU to use for the Undercloud local_interface. The default value is 1500 . _ROLE_MaxFailPercentage Sets the max_fail_percentage value when running config-download Ansible playbooks. The default value is 0 . _ROLE_NetConfigOverride Custom JSON data to be used to override the os-net-config config. This is meant to be used by net_config_override parameter in tripleoclient to provide an easy means to pass in custom net configs for the Undercloud. _ROLE_NetworkConfigTemplate ROLE NetworkConfig Template. _ROLE_NetworkConfigUpdate When set to "True", existing networks will be updated on the overcloud. This parameter replaces the functionality previously provided by NetworkDeploymentActions. Defaults to "False" so that only new nodes will have their networks configured. This is a role based parameter. The default value is False . _ROLE_Parameters Optional Role Specific parameters to be provided to service. _ROLE_RemovalPolicies List of resources to be removed from the role's ResourceGroup when doing an update that requires removal of specific resources. _ROLE_RemovalPoliciesMode How to handle change to RemovalPolicies for ROLE ResourceGroup when doing an update. Default mode append will append to the existing blocklist and update would replace the blocklist. The default value is append . _ROLE_SchedulerHints Optional scheduler hints to pass to OpenStack Compute (nova). _ROLE_ServiceNetMap Role specific ServiceNetMap overrides, the map provided will be merged with the global ServiceNetMap when passing the ServiceNetMap to the ROLE_ServiceChain resource and the _ROLE resource group. For example: _ROLE_ServiceNetMap: NovaLibvirtNetwork: internal_api_leaf2. _ROLE_Services A list of service resources (configured in the OpenStack Orchestration (heat) resource_registry) which represent nested stacks for each service that should get installed on the ROLE role. _ROLE_UseNMState When set to "True", NMState provider is used in os-net-config command to apply the network configuration. This is a role based parameter. The default value is False .

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