168 lines
4.4 KiB
YAML
168 lines
4.4 KiB
YAML
heat_template_version: 2015-10-15
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description: A Group of Load Balanced Servers
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parameters:
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app_port:
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type: number
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default: 8080
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description: Port used by the servers
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flavor:
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type: string
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description: Flavor used for servers
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constraints:
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- custom_constraint: nova.flavor
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image:
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type: string
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description: Image used for servers
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constraints:
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- custom_constraint: glance.image
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lb_port:
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type: number
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default: 80
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description: Port used by the load balancer
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private_network:
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type: string
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description: Network used by the servers
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constraints:
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- custom_constraint: neutron.network
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public_network:
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type: string
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description: Network used by the load balancer
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constraints:
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- custom_constraint: neutron.network
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subnet:
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type: string
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description: Subnet on which the load balancer will be located
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constraints:
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- custom_constraint: neutron.subnet
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resources:
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sec_group:
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type: OS::Neutron::SecurityGroup
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properties:
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rules:
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- remote_ip_prefix: 0.0.0.0/0
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protocol: tcp
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port_range_min: { get_param: app_port }
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port_range_max: { get_param: app_port }
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# A ResourceGroup with a nested server template
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# is a cleaner way of doing multiple servers.
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# These are placed inline for the sake of the
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# keeping the example in the App Catalog in a
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# single template.
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#
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# A Resource Group would be as follows:
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#
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# group:
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# type: OS::Heat::ResourceGroup
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# properties:
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# count: 2
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# resource_def:
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# type: lb_server.yaml
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#
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# The lb_server template would create the
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# server and member resources.
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server1:
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type: OS::Nova::Server
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properties:
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image: { get_param: image }
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flavor: { get_param: flavor }
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networks: [{ network: { get_param: private_network }}]
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security_groups: [{ get_resource: sec_group }]
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user_data_format: RAW
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user_data:
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str_replace:
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template: |
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#! /bin/sh -v
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Body=$(hostname)
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Response="HTTP/1.1 200 OK\r\nContent-Length: ${#Body}\r\n\r\n$Body"
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while true ; do echo -e $Response | nc -llp PORT; done
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params:
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PORT: { get_param: app_port }
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pool_member1:
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type: OS::Neutron::LBaaS::PoolMember
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properties:
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pool: { get_resource: pool }
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address: { get_attr: [ server1, first_address ]}
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protocol_port: { get_param: app_port }
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subnet: { get_param: subnet }
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server2:
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type: OS::Nova::Server
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properties:
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image: { get_param: image }
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flavor: { get_param: flavor }
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networks: [{ network: { get_param: private_network }}]
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security_groups: [{ get_resource: sec_group }]
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user_data_format: RAW
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user_data:
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str_replace:
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template: |
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#! /bin/sh -v
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Body=$(hostname)
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Response="HTTP/1.1 200 OK\r\nContent-Length: ${#Body}\r\n\r\n$Body"
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while true ; do echo -e $Response | nc -llp PORT; done
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params:
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PORT: { get_param: app_port }
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pool_member2:
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type: OS::Neutron::LBaaS::PoolMember
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properties:
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pool: { get_resource: pool }
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address: { get_attr: [ server2, first_address ]}
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protocol_port: { get_param: app_port }
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subnet: { get_param: subnet }
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monitor:
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type: OS::Neutron::LBaaS::HealthMonitor
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properties:
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delay: 3
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type: HTTP
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timeout: 3
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max_retries: 3
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pool: { get_resource: pool }
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pool:
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type: OS::Neutron::LBaaS::Pool
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properties:
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lb_algorithm: ROUND_ROBIN
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protocol: HTTP
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listener: { get_resource: listener }
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listener:
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type: OS::Neutron::LBaaS::Listener
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properties:
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loadbalancer: { get_resource: loadbalancer }
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protocol: HTTP
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protocol_port: { get_param: lb_port }
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loadbalancer:
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type: OS::Neutron::LBaaS::LoadBalancer
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properties:
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vip_subnet: { get_param: subnet }
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floating_ip:
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type: OS::Neutron::FloatingIP
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properties:
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floating_network: { get_param: public_network }
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port_id: { get_attr: [loadbalancer, vip_port_id ]}
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outputs:
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lburl:
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value:
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str_replace:
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template: http://IP_ADDRESS:PORT
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params:
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IP_ADDRESS: { get_attr: [ floating_ip, floating_ip_address ] }
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PORT: { get_param: lb_port }
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description: >
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This URL is the "external" URL that can be used to access the
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load balancer.
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