a6187b36b8
This patch adds an example template to create a loadbalacner cluster which can automatically scale-out and scale in. Change-Id: Ieb4f0449ea678ddaff4159a85072bb29d3dc4203
164 lines
4.1 KiB
YAML
164 lines
4.1 KiB
YAML
heat_template_version: 2016-04-08
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description: >
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This template demostrate how to create a cluster and attach a
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loadbalance policy, a scale-out policy and scale-in policy to it.
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parameters:
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flavor:
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description: Flavor for the instances to be created.
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type: string
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default: m1.nano
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image:
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description: Name or ID of the image to use for the instances.
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type: string
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default: cirros-0.3.4-x86_64-uec
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key_name:
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description: Name of an existing key pair to use for the instances.
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type: string
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network:
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description: The network for the instances.
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type: string
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default: private
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pool_subnet:
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description: Subnet for the port on which members can be connected.
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type: string
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default: private-subnet
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vip_subnet:
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description: Subnet on which VIP address will be allocated.
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type: string
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default: private-subnet
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resources:
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security_group:
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type: OS::Neutron::SecurityGroup
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properties:
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rules:
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- protocol: icmp
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- protocol: tcp
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port_range_min: 22
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port_range_max: 22
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- protocol: tcp
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port_range_min: 80
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port_range_max: 80
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profile:
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type: OS::Senlin::Profile
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properties:
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type: os.nova.server-1.0
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properties:
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flavor: {get_param: flavor}
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image: {get_param: image}
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key_name: {get_param: key_name}
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networks:
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- network: {get_param: network}
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security_groups:
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- {get_resource: security_group}
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cluster:
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type: OS::Senlin::Cluster
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properties:
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desired_capacity: 2
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min_size: 2
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profile: {get_resource: profile}
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scale_in_policy:
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type: OS::Senlin::Policy
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properties:
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type: senlin.policy.scaling-1.0
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bindings:
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- cluster: {get_resource: cluster}
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properties:
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event: CLUSTER_SCALE_IN
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adjustment:
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type: CHANGE_IN_CAPACITY
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number: 1
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scale_out_policy:
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type: OS::Senlin::Policy
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properties:
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type: senlin.policy.scaling-1.0
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bindings:
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- cluster: {get_resource: cluster}
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properties:
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event: CLUSTER_SCALE_OUT
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adjustment:
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type: CHANGE_IN_CAPACITY
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number: 1
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lb_policy:
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type: OS::Senlin::Policy
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properties:
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type: senlin.policy.loadbalance-1.0
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bindings:
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- cluster: {get_resource: cluster}
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properties:
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pool:
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protocol: HTTP
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protocol_port: 80
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subnet: {get_param: pool_subnet}
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lb_method: ROUND_ROBIN
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vip:
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subnet: {get_param: vip_subnet}
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protocol: HTTP
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protocol_port: 80
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health_monitor:
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type: HTTP
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delay: 10
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timeout: 5
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max_retries: 4
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receiver_scale_out:
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type: OS::Senlin::Receiver
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properties:
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cluster: {get_resource: cluster}
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action: CLUSTER_SCALE_OUT
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type: webhook
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receiver_scale_in:
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type: OS::Senlin::Receiver
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properties:
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cluster: {get_resource: cluster}
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action: CLUSTER_SCALE_IN
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type: webhook
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deletion_policy:
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type: OS::Senlin::Policy
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properties:
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type: senlin.policy.deletion-1.0
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bindings:
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- cluster: {get_resource: cluster}
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properties:
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criteria: YOUNGEST_FIRST
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destroy_after_deletion: True
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grace_period: 20
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reduce_desired_capacity: False
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scale_in_alarm:
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type: OS::Ceilometer::Alarm
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properties:
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description: trigger when bandwidth overflow
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meter_name: network.services.lb.incoming.bytes.rate
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statistic: avg
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period: 180
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evaluation_periods: 1
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threshold: 12000
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repeat_actions: True
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alarm_actions:
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- {get_attr: [receiver_scale_in, channel, alarm_url]}
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comparison_operator: le
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scale_out_alarm:
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type: OS::Ceilometer::Alarm
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properties:
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description: trigger when bandwidth insufficient
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meter_name: network.services.lb.incoming.bytes.rate
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statistic: avg
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period: 60
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evaluation_periods: 1
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threshold: 28000
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repeat_actions: True
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alarm_actions:
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- {get_attr: [receiver_scale_out, channel, alarm_url]}
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comparison_operator: ge
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