Example 21 - Grouping nodes for anti-colocation policy application
tosca_definitions_version: tosca_simple_yaml_1_0
description: Template hosting requirements and placement policy.
topology_template: inputs: # omitted here for brevity node_templates: wordpress_server: type: tosca.nodes.WebServer properties: # omitted here for brevity requirements: - host: # Find a Compute node that fulfills these additional filter reqs. node_filter: capabilities: - host: properties: - mem_size: { greater_or_equal: 512 MB } - disk_size: { greater_or_equal: 2 GB } - os: properties: - architecture: x86_64 - type: linux mysql: type: tosca.nodes.DBMS.MySQL properties: # omitted here for brevity requirements: - host: node: tosca.nodes.Compute node_filter: capabilities: - host: properties: - disk_size: { greater_or_equal: 1 GB } - os: properties: - architecture: x86_64 - type: linux groups: my_co_location_group: type: tosca.groups.Root members: [ wordpress_server, mysql ] policies: - my_anti_collocation_policy: type: my.policies.anticolocation targets: [ my_co_location_group ] # For this example, specific policy definitions are considered # domain specific and are not included here |