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For advanced users with existing Ansible playbooks and greater customisation needs, it is possible to just pick and choose roles you are interested and include them into your own playbooks, instead of running separate playbooks. You can find the URLs for each of the dependant roles in the requirements.yml file. 

ansible-galaxy role install -r requirements.yml roles/

1. Open your playbook file and include the roles that you are interested in. For example, here is a playbook that includes 3 roles and customises some

1. variable:
   

   Code Block
   language yaml title myplaybook.yml
   --- - hosts: all   become: yes   vars:     conda_prefix: /opt/conda   tasks:     - name: Mars client       ansible.builtin.include_role:         name: ewc-ansible-role-mars-client       - name: ML basic stack       ansible.builtin.include_role:         name: ewc-ansible-role-ml-basic       - name: Anemoi       ansible.builtin.include_role:         name: ewc-ansible-role-ecmwf-anemoi

   
   See the official Ansible documentation for more information on roles and how to include them. 
2. Make sure the necessary roles are available before you run the playbook. For that you may install them with ansible-galaxy either individually or writing your own requirements.yml. For the example above, this could be a requirements.yaml file:
   

   Code Block
   language yaml title requirements.yml
   --- # Ansible Requirements roles: - name: ewc-ansible-role-mars-client src: https://github.com/ewcloud/ewc-ansible-role-mars-client.git version: main - name: ewc-ansible-role-conda src: https://github.com/ewcloud/ewc-ansible-role-conda.git version: main - name: ewc-ansible-role-ml-basic src: https://github.com/ewcloud/ewc-ansible-role-ml-basic.git version: main - name: ewc-ansible-role-anemoi src: https://github.com/ewcloud/ewc-ansible-role-anemoi.git version: main

   
   See the official Ansible documentation for more details on how to create such file.
3. Install the roles with ansible-galaxy:
   

   No Format
   ansible-galaxy role install -r requirements.yml roles/

4. Run the playbook

   No Format
   $ ansible-playbook -i inventory myplaybook.yml