Chapter 10. Configuring the overcloud with the Orchestration service (heat) You can use the Orchestration service (heat) to create custom overcloud configurations in heat templates and environment files. 10.1. Understanding heat templates The custom configurations in this guide use heat templates and environment files to define certain aspects of the overcloud. This chapter provides a basic introduction to heat templates so that you can understand the structure and format of these templates in the context of Red Hat OpenStack Platform director. 10.1.1. heat templates Director uses Heat Orchestration Templates (HOT) as the template format for the overcloud deployment plan. Templates in HOT format are usually expressed in YAML format. The purpose of a template is to define and create a stack, which is a collection of resources that OpenStack Orchestration (heat) creates, and the configuration of the resources. Resources are objects in Red Hat OpenStack Platform (RHOSP) and can include compute resources, network configuration, security groups, scaling rules, and custom resources. A heat template has three main sections: parameters These are settings passed to heat, which provide a way to customize a stack, and any default values for parameters without passed values. These settings are defined in the parameters section of a template. resources Use the resources section to define the resources, such as compute instances, networks, and storage volumes, that you can create when you deploy a stack using this template. Red Hat OpenStack Platform (RHOSP) contains a set of core resources that span across all components. These are the specific objects to create and configure as part of a stack. RHOSP contains a set of core resources that span across all components. These are defined in the resources section of a template. outputs Use the outputs section to declare the output parameters that your cloud users can access after the stack is created. Your cloud users can use these parameters to request details about the stack, such as the IP addresses of deployed instances, or URLs of web applications deployed as part of the stack. Example of a basic heat template: This template uses the resource type type: OS::Nova::Server to create an instance called my_instance with a particular flavor, image, and key that the cloud user specifies. The stack can return the value of instance_name , which is called My Cirros Instance . When heat processes a template, it creates a stack for the template and a set of child stacks for resource templates. This creates a hierarchy of stacks that descend from the main stack that you define with your template. You can view the stack hierarchy with the following command: 10.1.2. Environment files An environment file is a special type of template that you can use to customize your heat templates. You can include environment files in the deployment command, in addition to the core heat templates. An environment file contains three main sections: resource_registry This section defines custom resource names, linked to other heat templates. This provides a method to create custom resources that do not exist within the core resource collection. parameters These are common settings that you apply to the parameters of the top-level template. For example, if you have a template that deploys nested stacks, such as resource registry mappings, the parameters apply only to the top-level template and not to templates for the nested resources. parameter_defaults These parameters modify the default values for parameters in all templates. For example, if you have a heat template that deploys nested stacks, such as resource registry mappings,the parameter defaults apply to all templates. Important Use parameter_defaults instead of parameters when you create custom environment files for your overcloud, so that your parameters apply to all stack templates for the overcloud. Example of a basic environment file: This environment file ( my_env.yaml ) might be included when creating a stack from a certain heat template ( my_template.yaml ). The my_env.yaml file creates a new resource type called OS::Nova::Server::MyServer . The myserver.yaml file is a heat template file that provides an implementation for this resource type that overrides any built-in ones. You can include the OS::Nova::Server::MyServer resource in your my_template.yaml file. MyIP applies a parameter only to the main heat template that deploys with this environment file. In this example, MyIP applies only to the parameters in my_template.yaml . NetworkName applies to both the main heat template, my_template.yaml , and the templates that are associated with the resources that are included in the main template, such as the OS::Nova::Server::MyServer resource and its myserver.yaml template in this example. Note For RHOSP to use the heat template file as a custom template resource, the file extension must be either .yaml or .template. 10.1.3. Core overcloud heat templates Director contains a core heat template collection and environment file collection for the overcloud. This collection is stored in /usr/share/openstack-tripleo-heat-templates . The main files and directories in this template collection are: overcloud.j2.yaml This is the main template file that director uses to create the overcloud environment. This file uses Jinja2 syntax to iterate over certain sections in the template to create custom roles. The Jinja2 formatting is rendered into YAML during the overcloud deployment process. overcloud-resource-registry-puppet.j2.yaml This is the main environment file that director uses to create the overcloud environment. It provides a set of configurations for Puppet modules stored on the overcloud image. After director writes the overcloud image to each node, heat starts the Puppet configuration for each node by using the resources registered in this environment file. This file uses Jinja2 syntax to iterate over certain sections in the template to create custom roles. The Jinja2 formatting is rendered into YAML during the overcloud deployment process. roles_data.yaml This file contains the definitions of the roles in an overcloud and maps services to each role. network_data.yaml This file contains the definitions of the networks in an overcloud and their properties such as subnets, allocation pools, and VIP status. The default network_data.yaml file contains the default networks: External, Internal Api, Storage, Storage Management, Tenant, and Management. You can create a custom network_data.yaml file and add it to your openstack overcloud deploy command with the -n option. plan-environment.yaml This file contains the definitions of the metadata for your overcloud plan. This includes the plan name, main template to use, and environment files to apply to the overcloud. capabilities-map.yaml This file contains a mapping of environment files for an overcloud plan. deployment This directory contains heat templates. The overcloud-resource-registry-puppet.j2.yaml environment file uses the files in this directory to drive the application of the Puppet configuration on each node. environments This directory contains additional heat environment files that you can use for your overcloud creation. These environment files enable extra functions for your resulting Red Hat OpenStack Platform (RHOSP) environment. For example, the directory contains an environment file to enable Cinder NetApp backend storage ( cinder-netapp-config.yaml ). network This directory contains a set of heat templates that you can use to create isolated networks and ports. puppet This directory contains templates that control Puppet configuration. The overcloud-resource-registry-puppet.j2.yaml environment file uses the files in this directory to drive the application of the Puppet configuration on each node. puppet/services This directory contains legacy heat templates for all service configuration. The templates in the deployment directory replace most of the templates in the puppet/services directory. extraconfig This directory contains templates that you can use to enable extra functionality. 10.1.4. Including environment files in overcloud creation Include environment files in the deployment command with the -e option. You can include as many environment files as necessary. However, the order of the environment files is important as the parameters and resources that you define in subsequent environment files take precedence. For example, you have two environment files that contain a common resource type OS::TripleO::NodeExtraConfigPost , and a common parameter TimeZone : environment-file-1.yaml environment-file-2.yaml You include both environment files in the deployment command: The openstack overcloud deploy command runs through the following process: Loads the default configuration from the core heat template collection. Applies the configuration from environment-file-1.yaml , which overrides any common settings from the default configuration. Applies the configuration from environment-file-2.yaml , which overrides any common settings from the default configuration and environment-file-1.yaml . This results in the following changes to the default configuration of the overcloud: OS::TripleO::NodeExtraConfigPost resource is set to /home/stack/templates/template-2.yaml , as defined in environment-file-2.yaml . TimeZone parameter is set to Hongkong , as defined in environment-file-2.yaml . RabbitFDLimit parameter is set to 65536 , as defined in environment-file-1.yaml . environment-file-2.yaml does not change this value. You can use this mechanism to define custom configuration for your overcloud without values from multiple environment files conflicting. 10.1.5. Using customized core heat templates When creating the overcloud, director uses a core set of heat templates located in /usr/share/openstack-tripleo-heat-templates . If you want to customize this core template collection, use the following Git workflows to manage your custom template collection: Procedure Create an initial Git repository that contains the heat template collection: Copy the template collection to the /home/stack/templates directory: Change to the custom template directory and initialize a Git repository: Configure your Git user name and email address: Replace <USER_NAME> with the user name that you want to use. Replace <EMAIL_ADDRESS> with your email address. Stage all templates for the initial commit: Create an initial commit: This creates an initial master branch that contains the latest core template collection. Use this branch as the basis for your custom branch and merge new template versions to this branch. Use a custom branch to store your changes to the core template collection. Use the following procedure to create a my-customizations branch and add customizations: Create the my-customizations branch and switch to it: Edit the files in the custom branch. Stage the changes in git: Commit the changes to the custom branch: This adds your changes as commits to the my-customizations branch. When the master branch updates, you can rebase my-customizations off master , which causes git to add these commits on to the updated template collection. This helps track your customizations and replay them on future template updates. When you update the undercloud, the openstack-tripleo-heat-templates package might also receive updates. When this occurs, you must also update your custom template collection: Save the openstack-tripleo-heat-templates package version as an environment variable: Change to your template collection directory and create a new branch for the updated templates: Remove all files in the branch and replace them with the new versions: Add all templates for the initial commit: Create a commit for the package update: Merge the branch into master. If you use a Git management system (such as GitLab), use the management workflow. If you use git locally, merge by switching to the master branch and run the git merge command: The master branch now contains the latest version of the core template collection. You can now rebase the my-customization branch from this updated collection. Update the my-customization branch,: Change to the my-customizations branch: Rebase the branch off master : This updates the my-customizations branch and replays the custom commits made to this branch. Resolve any conflicts that occur during the rebase: Check which files contain the conflicts: Resolve the conflicts of the template files identified. Add the resolved files: Continue the rebase: Deploy the custom template collection: Ensure that you have switched to the my-customization branch: Run the openstack overcloud deploy command with the --templates option to specify your local template directory: Note Director uses the default template directory ( /usr/share/openstack-tripleo-heat-templates ) if you specify the --templates option without a directory. Important Red Hat recommends using the methods in Section 10.3, "Configuration hooks" instead of modifying the heat template collection. 10.1.6. Jinja2 rendering The core heat templates in /usr/share/openstack-tripleo-heat-templates contain a number of files that have the j2.yaml file extension. These files contain Jinja2 template syntax and director renders these files to their static heat template equivalents that have the .yaml extension. For example, the main overcloud.j2.yaml file renders into overcloud.yaml . Director uses the resulting overcloud.yaml file. The Jinja2-enabled heat templates use Jinja2 syntax to create parameters and resources for iterative values. For example, the overcloud.j2.yaml file contains the following snippet: When director renders the Jinja2 syntax, director iterates over the roles defined in the roles_data.yaml file and populates the {{role.name}}Count parameter with the name of the role. The default roles_data.yaml file contains five roles and results in the following parameters from our example: ControllerCount ComputeCount BlockStorageCount ObjectStorageCount CephStorageCount A example rendered version of the parameter looks like this: Director renders Jinja2-enabled templates and environment files only from within the directory of your core heat templates. The following use cases demonstrate the correct method to render the Jinja2 templates. Use case 1: Default core templates Template directory: /usr/share/openstack-tripleo-heat-templates/ Environment file: /usr/share/openstack-tripleo-heat-templates/environments/ssl/enable-internal-tls.j2.yaml Director uses the default core template location ( --templates ) and renders the enable-internal-tls.j2.yaml file into enable-internal-tls.yaml . When you run the openstack overcloud deploy command, use the -e option to include the name of the rendered enable-internal-tls.yaml file. Use case 2: Custom core templates Template directory: /home/stack/tripleo-heat-installer-templates Environment file: /home/stack/tripleo-heat-installer-templates/environments/ssl/enable-internal-tls.j2.yaml Director uses a custom core template location ( --templates /home/stack/tripleo-heat-templates ) and director renders the enable-internal-tls.j2.yaml file within the custom core templates into enable-internal-tls.yaml . When you run the openstack overcloud deploy command, use the -e option to include the name of the rendered enable-internal-tls.yaml file. Use case 3: Incorrect usage Template directory: /usr/share/openstack-tripleo-heat-templates/ Environment file: /home/stack/tripleo-heat-installer-templates/environments/ssl/enable-internal-tls.j2.yaml Director uses a custom core template location ( --templates /home/stack/tripleo-heat-installer-templates ). However, the chosen enable-internal-tls.j2.yaml is not located within the custom core templates, so it will not render into enable-internal-tls.yaml . This causes the deployment to fail. Processing Jinja2 syntax into static templates Use the process-templates.py script to render the Jinja2 syntax of the openstack-tripleo-heat-templates into a set of static templates. To render a copy of the openstack-tripleo-heat-templates collection with the process-templates.py script, change to the openstack-tripleo-heat-templates directory: Run the process-templates.py script, which is located in the tools directory, along with the -o option to define a custom directory to save the static copy: This converts all Jinja2 templates to their rendered YAML versions and saves the results to ~/openstack-tripleo-heat-templates-rendered . 10.2. Heat parameters Each heat template in the director template collection contains a parameters section. This section contains definitions for all parameters specific to a particular overcloud service. This includes the following: overcloud.j2.yaml - Default base parameters roles_data.yaml - Default parameters for composable roles deployment/*.yaml - Default parameters for specific services You can modify the values for these parameters using the following method: Create an environment file for your custom parameters. Include your custom parameters in the parameter_defaults section of the environment file. Include the environment file with the openstack overcloud deploy command. 10.2.1. Example 1: Configuring the time zone The Heat template for setting the timezone ( puppet/services/time/timezone.yaml ) contains a TimeZone parameter. If you leave the TimeZone parameter blank, the overcloud sets the time to UTC as a default. To obtain lists of timezones run the timedatectl list-timezones command. The following example command retrieves the timezones for Asia: After you identify your timezone, set the TimeZone parameter in an environment file. The following example environment file sets the value of TimeZone to Asia/Tokyo : 10.2.2. Example 2: Configuring RabbitMQ file descriptor limit For certain configurations, you might need to increase the file descriptor limit for the RabbitMQ server. Use the deployment/rabbitmq/rabbitmq-container-puppet.yaml heat template to set a new limit in the RabbitFDLimit parameter. Add the following entry to an environment file: 10.2.3. Example 3: Enabling and disabling parameters You might need to initially set a parameter during a deployment, then disable the parameter for a future deployment operation, such as updates or scaling operations. For example, to include a custom RPM during the overcloud creation, include the following entry in an environment file: To disable this parameter from a future deployment, it is not sufficient to remove the parameter. Instead, you must set the parameter to an empty value: This ensures the parameter is no longer set for subsequent deployments operations. 10.2.4. Example 4: Role-based parameters Use the [ROLE]Parameters parameters, replacing [ROLE] with a composable role, to set parameters for a specific role. For example, director configures sshd on both Controller and Compute nodes. To set a different sshd parameters for Controller and Compute nodes, create an environment file that contains both the ControllerParameters and ComputeParameters parameter and set the sshd parameters for each specific role: 10.2.5. Identifying parameters that you want to modify Red Hat OpenStack Platform director provides many parameters for configuration. In some cases, you might experience difficulty identifying a certain option that you want to configure, and the corresponding director parameter. If there is an option that you want to configure with director, use the following workflow to identify and map the option to a specific overcloud parameter: Identify the option that you want to configure. Make a note of the service that uses the option. Check the corresponding Puppet module for this option. The Puppet modules for Red Hat OpenStack Platform are located under /etc/puppet/modules on the director node. Each module corresponds to a particular service. For example, the keystone module corresponds to the OpenStack Identity (keystone). If the Puppet module contains a variable that controls the chosen option, move to the step. If the Puppet module does not contain a variable that controls the chosen option, no hieradata exists for this option. If possible, you can set the option manually after the overcloud completes deployment. Check the core heat template collection for the Puppet variable in the form of hieradata. The templates in deployment/* usually correspond to the Puppet modules of the same services. For example, the deployment/keystone/keystone-container-puppet.yaml template provides hieradata to the keystone module. If the heat template sets hieradata for the Puppet variable, the template should also disclose the director-based parameter that you can modify. If the heat template does not set hieradata for the Puppet variable, use the configuration hooks to pass the hieradata using an environment file. See Section 10.3.4, "Puppet: Customizing hieradata for roles" for more information on customizing hieradata. Procedure To change the notification format for OpenStack Identity (keystone), use the workflow and complete the following steps: Identify the OpenStack parameter that you want to configure ( notification_format ). Search the keystone Puppet module for the notification_format setting: In this case, the keystone module manages this option using the keystone::notification_format variable. Search the keystone service template for this variable: The output shows that director uses the KeystoneNotificationFormat parameter to set the keystone::notification_format hieradata. The following table shows the eventual mapping: Director parameter Puppet hieradata OpenStack Identity (keystone) option KeystoneNotificationFormat keystone::notification_format notification_format You set the KeystoneNotificationFormat in an overcloud environment file, which then sets the notification_format option in the keystone.conf file during the overcloud configuration. 10.3. Configuration hooks Use configuration hooks to inject your own custom configuration functions into the overcloud deployment process. You can create hooks to inject custom configuration before and after the main overcloud services configuration, and hooks for modifying and including Puppet-based configuration. 10.3.1. Pre-configuration: customizing specific overcloud roles The overcloud uses Puppet for the core configuration of OpenStack components. Director provides a set of hooks that you can use to perform custom configuration for specific node roles before the core configuration begins. These hooks include the following configurations: Important versions of this document used the OS::TripleO::Tasks::*PreConfig resources to provide pre-configuration hooks on a per role basis. The heat template collection requires dedicated use of these hooks, which means that you should not use them for custom use. Instead, use the OS::TripleO::*ExtraConfigPre hooks outlined here. OS::TripleO::ControllerExtraConfigPre Additional configuration applied to Controller nodes before the core Puppet configuration. OS::TripleO::ComputeExtraConfigPre Additional configuration applied to Compute nodes before the core Puppet configuration. OS::TripleO::CephStorageExtraConfigPre Additional configuration applied to Ceph Storage nodes before the core Puppet configuration. OS::TripleO::ObjectStorageExtraConfigPre Additional configuration applied to Object Storage nodes before the core Puppet configuration. OS::TripleO::BlockStorageExtraConfigPre Additional configuration applied to Block Storage nodes before the core Puppet configuration. OS::TripleO::[ROLE]ExtraConfigPre Additional configuration applied to custom nodes before the core Puppet configuration. Replace [ROLE] with the composable role name. In this example, append the resolv.conf file on all nodes of a particular role with a variable nameserver: Procedure Create a basic heat template ~/templates/nameserver.yaml that runs a script to write a variable nameserver to the resolv.conf file of a node: In this example, the resources section contains the following parameters: CustomExtraConfigPre This defines a software configuration. In this example, we define a Bash script and heat replaces _NAMESERVER_IP_ with the value stored in the nameserver_ip parameter. CustomExtraDeploymentPre This executes a software configuration, which is the software configuration from the CustomExtraConfigPre resource. Note the following: The config parameter references the CustomExtraConfigPre resource so that heat knows which configuration to apply. The server parameter retrieves a map of the overcloud nodes. This parameter is provided by the parent template and is mandatory in templates for this hook. The actions parameter defines when to apply the configuration. Use the default CREATE value to apply the configuration when the overcloud is created. input_values contains a parameter called deploy_identifier , which stores the DeployIdentifier from the parent template. This parameter provides a timestamp to the resource for each deployment update to ensure that the resource reapplies on subsequent overcloud updates. Create an environment file ~/templates/pre_config.yaml that registers your heat template to the role-based resource type. For example, to apply the configuration only to Controller nodes, use the ControllerExtraConfigPre hook: Add the environment file to the stack, along with your other environment files: This applies the configuration to all Controller nodes before the core configuration begins on either the initial overcloud creation or subsequent updates. Important You can register each resource to only one heat template per hook. Subsequent usage overrides the heat template to use. 10.3.2. Pre-configuration: customizing all overcloud roles The overcloud uses Puppet for the core configuration of OpenStack components. Director provides a hook that you can use to configure all node types before the core configuration begins: OS::TripleO::NodeExtraConfig Additional configuration applied to all nodes roles before the core Puppet configuration. In this example, append the resolv.conf file on each node with a variable nameserver: Procedure Create a basic heat template ~/templates/nameserver.yaml that runs a script to append the resolv.conf file of each node with a variable nameserver: In this example, the resources section contains the following parameters: CustomExtraConfigPre This parameter defines a software configuration. In this example, you define a Bash script and heat replaces _NAMESERVER_IP_ with the value stored in the nameserver_ip parameter. CustomExtraDeploymentPre This parameter executes a software configuration, which is the software configuration from the CustomExtraConfigPre resource. Note the following: The config parameter references the CustomExtraConfigPre resource so that heat knows which configuration to apply. The server parameter retrieves a map of the overcloud nodes. This parameter is provided by the parent template and is mandatory in templates for this hook. The actions parameter defines when to apply the configuration. Use the default CREATE value to apply the configuration when the overcloud is created. The input_values parameter contains a sub-parameter called deploy_identifier , which stores the DeployIdentifier from the parent template. This parameter provides a timestamp to the resource for each deployment update to ensure that the resource reapplies on subsequent overcloud updates. Create an environment file ~/templates/pre_config.yaml that registers your heat template as the OS::TripleO::NodeExtraConfig resource type. Add the environment file to the stack, along with your other environment files: This applies the configuration to all nodes before the core configuration begins on either the initial overcloud creation or subsequent updates. Important You can register the OS::TripleO::NodeExtraConfig to only one heat template. Subsequent usage overrides the heat template to use. 10.3.3. Post-configuration: customizing all overcloud roles Important versions of this document used the OS::TripleO::Tasks::*PostConfig resources to provide post-configuration hooks on a per role basis. The heat template collection requires dedicated use of these hooks, which means that you should not use them for custom use. Instead, use the OS::TripleO::NodeExtraConfigPost hook outlined here. A situation might occur where you have completed the creation of your overcloud but you want to add additional configuration to all roles, either on initial creation or on a subsequent update of the overcloud. In this case, use the following post-configuration hook: OS::TripleO::NodeExtraConfigPost Additional configuration applied to all nodes roles after the core Puppet configuration. In this example, append the resolv.conf file on each node with a variable nameserver: Procedure Create a basic heat template ~/templates/nameserver.yaml that runs a script to append the resolv.conf file of each node with a variable nameserver: In this example, the resources section contains the following parameters: CustomExtraConfig This defines a software configuration. In this example, you define a Bash script and heat replaces _NAMESERVER_IP_ with the value stored in the nameserver_ip parameter. CustomExtraDeployments This executes a software configuration, which is the software configuration from the CustomExtraConfig resource. Note the following: The config parameter references the CustomExtraConfig resource so that heat knows which configuration to apply. The servers parameter retrieves a map of the overcloud nodes. This parameter is provided by the parent template and is mandatory in templates for this hook. The actions parameter defines when to apply the configuration. Use the default CREATE value to apply the configuration when the overcloud is created. input_values contains a parameter called deploy_identifier , which stores the DeployIdentifier from the parent template. This parameter provides a timestamp to the resource for each deployment update to ensure that the resource reapplies on subsequent overcloud updates. Create an environment file ~/templates/post_config.yaml that registers your heat template as the OS::TripleO::NodeExtraConfigPost: resource type. Add the environment file to the stack, along with your other environment files: This applies the configuration to all nodes after the core configuration completes on either initial overcloud creation or subsequent updates. Important You can register the OS::TripleO::NodeExtraConfigPost to only one heat template. Subsequent usage overrides the heat template to use. 10.3.4. Puppet: Customizing hieradata for roles The heat template collection contains a set of parameters that you can use to pass extra configuration to certain node types. These parameters save the configuration as hieradata for the Puppet configuration on the node: ControllerExtraConfig Configuration to add to all Controller nodes. ComputeExtraConfig Configuration to add to all Compute nodes. BlockStorageExtraConfig Configuration to add to all Block Storage nodes. ObjectStorageExtraConfig Configuration to add to all Object Storage nodes. CephStorageExtraConfig Configuration to add to all Ceph Storage nodes. [ROLE]ExtraConfig Configuration to add to a composable role. Replace [ROLE] with the composable role name. ExtraConfig Configuration to add to all nodes. Procedure To add extra configuration to the post-deployment configuration process, create an environment file that contains these parameters in the parameter_defaults section. For example, to increase the reserved memory for Compute hosts to 1024 MB and set the VNC keymap to Japanese, use the following entries in the ComputeExtraConfig parameter: Include this environment file in the openstack overcloud deploy command, along with any other environment files relevant to your deployment. Important You can define each parameter only once. Subsequent usage overrides values. 10.3.5. Puppet: Customizing hieradata for individual nodes You can set Puppet hieradata for individual nodes using the heat template collection: Procedure Identify the system UUID from the introspection data for a node: This command returns a system UUID. For example: Create an environment file to define node-specific hieradata and register the per_node.yaml template to a pre-configuration hook. Include the system UUID of the node that you want to configure in the NodeDataLookup parameter: Include this environment file in the openstack overcloud deploy command, along with any other environment files relevant to your deployment. The per_node.yaml template generates a set of hieradata files on nodes that correspond to each system UUID and contains the hieradata that you define. If a UUID is not defined, the resulting hieradata file is empty. In this example, the per_node.yaml template runs on all Compute nodes as defined by the OS::TripleO::ComputeExtraConfigPre hook, but only the Compute node with system UUID f5055c6c-477f-47fb-afe5-95c6928c407f receives hieradata. You can use this mechanism to tailor each node according to specific requirements. 10.3.6. Puppet: Applying custom manifests In certain circumstances, you might want to install and configure some additional components on your overcloud nodes. You can achieve this with a custom Puppet manifest that applies to nodes after the main configuration completes. As a basic example, you might want to install motd on each node Procedure Create a heat template ~/templates/custom_puppet_config.yaml that launches Puppet configuration. This example includes the /home/stack/templates/motd.pp within the template and passes it to nodes for configuration. The motd.pp file contains the Puppet classes necessary to install and configure motd . Create an environment file ~templates/puppet_post_config.yaml that registers your heat template as the OS::TripleO::NodeExtraConfigPost: resource type. Include this environment file in the openstack overcloud deploy command, along with any other environment files relevant to your deployment. This applies the configuration from motd.pp to all nodes in the overcloud.

Commands:
heat_template_version: 2013-05-23 description: > A very basic Heat template. parameters: key_name: type: string default: lars description: Name of an existing key pair to use for the instance flavor: type: string description: Instance type for the instance to be created default: m1.small image: type: string default: cirros description: ID or name of the image to use for the instance resources: my_instance: type: OS::Nova::Server properties: name: My Cirros Instance image: { get_param: image } flavor: { get_param: flavor } key_name: { get_param: key_name } output: instance_name: description: Get the instance's name value: { get_attr: [ my_instance, name ] }
openstack stack list --nested
resource_registry: OS::Nova::Server::MyServer: myserver.yaml parameter_defaults: NetworkName: my_network parameters: MyIP: 192.168.0.1
resource_registry: OS::TripleO::NodeExtraConfigPost: /home/stack/templates/template-1.yaml parameter_defaults: RabbitFDLimit: 65536 TimeZone: 'Japan'
resource_registry: OS::TripleO::NodeExtraConfigPost: /home/stack/templates/template-2.yaml parameter_defaults: TimeZone: 'Hongkong'
openstack overcloud deploy --templates -e environment-file-1.yaml -e environment-file-2.yaml
cd ~/templates cp -r /usr/share/openstack-tripleo-heat-templates .
cd ~/templates/openstack-tripleo-heat-templates git init .
git config --global user.name "<USER_NAME>" git config --global user.email "<EMAIL_ADDRESS>"
git add *
git commit -m "Initial creation of custom core heat templates"
git checkout -b my-customizations
git add [edited files]
git commit -m " [Commit message for custom changes] "
export PACKAGE=USD(rpm -qv openstack-tripleo-heat-templates)
cd ~/templates/openstack-tripleo-heat-templates git checkout -b USDPACKAGE
git rm -rf * cp -r /usr/share/openstack-tripleo-heat-templates/* .
git add *
git commit -m "Updates for USDPACKAGE"
git checkout master git merge USDPACKAGE
git checkout my-customizations
git rebase master
git status
git add [resolved files]
git rebase --continue
git checkout my-customizations
openstack overcloud deploy --templates /home/stack/templates/openstack-tripleo-heat-templates [OTHER OPTIONS]
parameters: {% for role in roles %} {{role.name}}Count: description: Number of {{role.name}} nodes to deploy type: number default: {{role.CountDefault|default(0)}} {% endfor %}
parameters: ControllerCount: description: Number of Controller nodes to deploy type: number default: 1
openstack overcloud deploy --templates -e /usr/share/openstack-tripleo-heat-templates/environments/ssl/enable-internal-tls.yaml
openstack overcloud deploy --templates /home/stack/tripleo-heat-templates -e /home/stack/tripleo-heat-templates/environments/ssl/enable-internal-tls.yaml
cd /usr/share/openstack-tripleo-heat-templates
./tools/process-templates.py -o ~/openstack-tripleo-heat-templates-rendered
sudo timedatectl list-timezones|grep "Asia"
parameter_defaults: TimeZone: 'Asia/Tokyo'
parameter_defaults: RabbitFDLimit: 65536
parameter_defaults: DeployArtifactURLs: ["http://www.example.com/myfile.rpm"]
parameter_defaults: DeployArtifactURLs: []
parameter_defaults: ControllerParameters: BannerText: "This is a Controller node" ComputeParameters: BannerText: "This is a Compute node"
grep notification_format /etc/puppet/modules/keystone/manifests/*
grep "keystone::notification_format" /usr/share/openstack-tripleo-heat-templates/deployment/keystone/keystone-container-puppet.yaml
heat_template_version: 2014-10-16 description: > Extra hostname configuration parameters: server: type: string nameserver_ip: type: string DeployIdentifier: type: string resources: CustomExtraConfigPre: type: OS::Heat::SoftwareConfig properties: group: script config: str_replace: template: | #!/bin/sh echo "nameserver _NAMESERVER_IP_" > /etc/resolv.conf params: _NAMESERVER_IP_: {get_param: nameserver_ip} CustomExtraDeploymentPre: type: OS::Heat::SoftwareDeployment properties: server: {get_param: server} config: {get_resource: CustomExtraConfigPre} actions: ['CREATE'] input_values: deploy_identifier: {get_param: DeployIdentifier} outputs: deploy_stdout: description: Deployment reference, used to trigger pre-deploy on changes value: {get_attr: [CustomExtraDeploymentPre, deploy_stdout]}
resource_registry: OS::TripleO::ControllerExtraConfigPre: /home/stack/templates/nameserver.yaml parameter_defaults: nameserver_ip: 192.168.1.1
openstack overcloud deploy --templates -e /home/stack/templates/pre_config.yaml
heat_template_version: 2014-10-16 description: > Extra hostname configuration parameters: server: type: string nameserver_ip: type: string DeployIdentifier: type: string resources: CustomExtraConfigPre: type: OS::Heat::SoftwareConfig properties: group: script config: str_replace: template: | #!/bin/sh echo "nameserver _NAMESERVER_IP_" >> /etc/resolv.conf params: _NAMESERVER_IP_: {get_param: nameserver_ip} CustomExtraDeploymentPre: type: OS::Heat::SoftwareDeployment properties: server: {get_param: server} config: {get_resource: CustomExtraConfigPre} actions: ['CREATE'] input_values: deploy_identifier: {get_param: DeployIdentifier} outputs: deploy_stdout: description: Deployment reference, used to trigger pre-deploy on changes value: {get_attr: [CustomExtraDeploymentPre, deploy_stdout]}
resource_registry: OS::TripleO::NodeExtraConfig: /home/stack/templates/nameserver.yaml parameter_defaults: nameserver_ip: 192.168.1.1
openstack overcloud deploy --templates -e /home/stack/templates/pre_config.yaml
heat_template_version: 2014-10-16 description: > Extra hostname configuration parameters: servers: type: json nameserver_ip: type: string DeployIdentifier: type: string EndpointMap: default: {} type: json resources: CustomExtraConfig: type: OS::Heat::SoftwareConfig properties: group: script config: str_replace: template: | #!/bin/sh echo "nameserver _NAMESERVER_IP_" >> /etc/resolv.conf params: _NAMESERVER_IP_: {get_param: nameserver_ip} CustomExtraDeployments: type: OS::Heat::SoftwareDeploymentGroup properties: servers: {get_param: servers} config: {get_resource: CustomExtraConfig} actions: ['CREATE'] input_values: deploy_identifier: {get_param: DeployIdentifier}
resource_registry: OS::TripleO::NodeExtraConfigPost: /home/stack/templates/nameserver.yaml parameter_defaults: nameserver_ip: 192.168.1.1
openstack overcloud deploy --templates -e /home/stack/templates/post_config.yaml
parameter_defaults: ComputeExtraConfig: nova::compute::reserved_host_memory: 1024 nova::compute::vnc_keymap: ja
openstack baremetal introspection data save 9dcc87ae-4c6d-4ede-81a5-9b20d7dc4a14 | jq .extra.system.product.uuid
"f5055c6c-477f-47fb-afe5-95c6928c407f"
resource_registry: OS::TripleO::ComputeExtraConfigPre: /usr/share/openstack-tripleo-heat-templates/puppet/extraconfig/pre_deploy/per_node.yaml parameter_defaults: NodeDataLookup: '{"f5055c6c-477f-47fb-afe5-95c6928c407f": {"nova::compute::vcpu_pin_set": [ "2", "3" ]}}'
heat_template_version: 2014-10-16 description: > Run Puppet extra configuration to set new MOTD parameters: servers: type: json DeployIdentifier: type: string EndpointMap: default: {} type: json resources: ExtraPuppetConfig: type: OS::Heat::SoftwareConfig properties: config: {get_file: motd.pp} group: puppet options: enable_hiera: True enable_facter: False ExtraPuppetDeployments: type: OS::Heat::SoftwareDeploymentGroup properties: config: {get_resource: ExtraPuppetConfig} servers: {get_param: servers}
resource_registry: OS::TripleO::NodeExtraConfigPost: /home/stack/templates/custom_puppet_config.yaml
openstack overcloud deploy --templates -e /home/stack/templates/puppet_post_config.yaml