tosca_definitions_version: tosca_simple_yaml_1_0 description: > Test Requirements. imports: - custom_types/wordpress.yaml topology_template: node_templates: my_app: description: > Specify multiple requirement via node and relationship keyword, as an explicit relationship. Also demonstrates relationship with type keyword and without it as an in-line reference. type: tosca.nodes.WebApplication.WordPress requirements: - req1: node: my_webserver relationship: tosca.relationships.HostedOn - req2: node: mysql_database relationship: type: tosca.relationships.ConnectsTo mysql_database: description: Specify requirement via a capability as an implicit relationship. type: tosca.nodes.Database requirements: - host: node: my_dbms relationship: tosca.relationships.HostedOn my_dbms: type: tosca.nodes.DBMS my_webserver: type: tosca.nodes.WebServer my_server: description: > Specify requirement via a relationship template, as an explicit relationship. type: tosca.nodes.Compute capabilities: host: properties: num_cpus: 2 disk_size: 10 GB mem_size: 4 MB os: properties: # host Operating System image properties architecture: x86_64 type: linux distribution: rhel version: 6.5 requirements: - req1: node: my_storage relationship: storage_attachment my_storage: type: tosca.nodes.BlockStorage properties: size: 1 GiB snapshot_id: id relationship_templates: storage_attachment: type: tosca.relationships.AttachesTo properties: location: /temp