344 lines
12 KiB
YAML
344 lines
12 KiB
YAML
heat_template_version: 2016-04-08
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#The value of heat_template_version tells Heat not only the format of the template but also features that will be validated and supported
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#2016-04-08 represents the Mitaka release
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description: >
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This is the main Heat template for the 3-tier LAMP Workload created by the Enterprise WG.
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This version of the tempalte does not include autoscaling, and does not require ceilometer.
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This template calls multiple nested templates which actually do the
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majority of the work. This file calls the following yaml files in a ./lib subdirectory
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setup_net_sg.yaml sets up the security groups and networks for Web, App, and Database
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heat_app_tier.yaml starts up application servers and does on-the-fly builds
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heat_web_tier.yaml starts up web servers and does on-the-fly builds
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heat_sql_tier.yaml starts up mysql server and does on-the-fly builds.
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NOTE: This serves as a guide to new users and is not meant for production deployment.
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REQUIRED YAML FILES:
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setup_net_sg.yaml, heat_app_tier.yaml, heat_sql_tier.yaml, heat_web_tier.yaml
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REQUIRED PARAMETERS:
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ssh_key_name, image_id, public_network_id
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OPTIONAL PARAMETERS:
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db_instance_flavor, app_instance_flavor, web_instance_flavor, db_server_name, app_server_name, web_server_name, dns_nameserver
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#Created by: Craig Sterrett 3/23/2016
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######################################
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#The parameters section allows for specifying input parameters that have to be provided when instantiating the template
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parameters:
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ssh_key_name:
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type: string
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label: SSH Key Name
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description: REQUIRED PARAMETER -Name of an existing SSH KeyPair to enable SSH access to instances.
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hidden: false
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constraints:
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- custom_constraint: nova.keypair
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description: Must already exist on your cloud
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image_id:
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type: string
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label: Image ID
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description: >
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REQUIRED PARAMETER - The image id to be used for the compute instance. Please specify
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your own Image ID in your project/tenant. This could be modified to use different
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images for each tier.
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hidden: false
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constraints:
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- custom_constraint: glance.image
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description: Must be a valid image on your cloud
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public_network_id:
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type: string
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label: Public Network
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description: >
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REQUIRED PARAMETER - The public network name or id used to access the internet.
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This will fail if this is not a true public network
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hidden: false
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constraints:
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- custom_constraint: neutron.network
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description: Must be a valid network on your cloud
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db_instance_flavor:
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type: string
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label: Database server instance flavor
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description: The flavor type to use for db server.
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default: m1.small
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hidden: false
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constraints:
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- custom_constraint: nova.flavor
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description: Must be a valid flavor provided by your cloud provider.
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app_instance_flavor:
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type: string
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label: Application server instance flavor
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description: The flavor type to use for app servers.
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default: m1.small
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hidden: false
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constraints:
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- custom_constraint: nova.flavor
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description: Must be a valid flavor provided by your cloud provider.
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web_instance_flavor:
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type: string
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label: Web server instance flavor
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description: The flavor type to use for web servers.
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default: m1.small
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hidden: false
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constraints:
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- custom_constraint: nova.flavor
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description: Must be a valid flavor provided by your cloud provider.
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db_server_name:
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type: string
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label: Server Name
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description: Name of the database servers
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hidden: false
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default: db_server
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app_server_name:
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type: string
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label: Server Name
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description: Name of the application servers
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hidden: false
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default: app_server
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web_server_name:
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type: string
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label: Server Name
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description: Name of the web servers
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hidden: false
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default: web_server
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dns_nameserver:
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type: comma_delimited_list
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label: DNS Name Server
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description: The IP address of a DNS nameserver in list format
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default: 8.8.8.8,8.8.4.4
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######################################
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#The resources section defines actual resources that make up a stack deployed from the HOT template (for instance compute instances, networks, storage volumes).
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resources:
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####################
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#Setup Networking and Security Group
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#Call the setup_net_sg.yaml file
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network_setup:
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type: lib/setup_net_sg.yaml
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properties:
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public_network_id: { get_param: public_network_id }
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dns_nameserver: { get_param: dns_nameserver }
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####################
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##Kick off a Database server
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launch_db_server:
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type: lib/heat_sql_tier.yaml
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properties:
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ssh_key_name: { get_param: ssh_key_name }
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server_name: { get_param: db_server_name }
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instance_flavor: { get_param: db_instance_flavor }
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image_id: { get_param: image_id }
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private_network_id: {get_attr: [network_setup, db_private_network_id]}
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security_group: {get_attr: [network_setup, db_security_group_id]}
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####################
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#Autoscaling for the app servers
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app_autoscale_group:
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type: OS::Heat::AutoScalingGroup
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properties:
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desired_capacity: 2
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min_size: 2
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max_size: 5
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resource:
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type: lib/heat_app_tier.yaml
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properties:
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ssh_key_name:
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get_param: ssh_key_name
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server_name:
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get_param: app_server_name
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instance_flavor:
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get_param: app_instance_flavor
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image_id:
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get_param: image_id
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private_network_id: {get_attr: [network_setup, app_private_network_id]}
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security_group: {get_attr: [network_setup, app_security_group_id]}
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pool_name: {get_attr: [network_setup, app_lbaas_pool_name]}
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db_server_ip: {get_attr: [launch_db_server, instance_ip]}
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#created unique tag to be used by ceilometer to identify meters specific to the app nodes
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#without some unique metadata tag, ceilometer will group together all resources in the tenant
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metadata: {"metering.autoscale_group_name": "app_autoscale_group"}
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####################
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app_scaleup_policy:
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type: OS::Heat::ScalingPolicy
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properties:
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adjustment_type: change_in_capacity
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auto_scaling_group_id: { get_resource: app_autoscale_group }
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#cooldown prevents duplicate alarms while instances spin up. Set the value large
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#enough to allow for instance to startup and begin taking requests.
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cooldown: 900
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scaling_adjustment: 1
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app_cpu_alarm_high:
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type: OS::Ceilometer::Alarm
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properties:
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meter_name: cpu_util
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statistic: avg
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#period needs to be greater than the sampling rate in the pipleine.config file in /etc/ceilometer
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period: 600
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evaluation_periods: 1
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#Alarms if CPU utilization for ALL app nodes averaged together exceeds 50%
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threshold: 50
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repeat_actions: true
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alarm_actions:
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- {get_attr: [app_scaleup_policy, alarm_url]}
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#Collect data only on servers with the autoscale_group_name metadata set to app_autoscale_group
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#Otherwise ceilometer would look at all servers in the project
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matching_metadata: {'metadata.user_metadata.autoscale_group_name': "app_autoscale_group"}
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comparison_operator: gt
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app_scaledown_policy:
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type: OS::Heat::ScalingPolicy
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properties:
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adjustment_type: change_in_capacity
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auto_scaling_group_id: { get_resource: app_autoscale_group }
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#cooldown prevents duplicate alarms while instances shut down. Set the value large
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#enough to allow for instance to shutdown and things stabilize.
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cooldown: 900
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scaling_adjustment: -1
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app_cpu_alarm_low:
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type: OS::Ceilometer::Alarm
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properties:
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meter_name: cpu_util
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statistic: avg
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#period needs to be greater than the sampling rate in the pipleine.config file in /etc/ceilometer
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period: 600
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evaluation_periods: 1
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#Alarms if CPU utilization for ALL app nodes averaged together drops below 20%
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threshold: 20
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repeat_actions: true
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alarm_actions:
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- {get_attr: [app_scaledown_policy, alarm_url]}
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#Collect data only on servers with the autoscale_group_name metadata set to app_autoscale_group
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#Otherwise ceilometer would look at all servers in the project
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matching_metadata: {'metadata.user_metadata.autoscale_group_name': "app_autoscale_group"}
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comparison_operator: lt
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####################
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#Autoscaling for the web servers
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web_autoscale_group:
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type: OS::Heat::AutoScalingGroup
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properties:
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desired_capacity: 2
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min_size: 2
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max_size: 5
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resource:
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type: lib/heat_web_tier.yaml
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properties:
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ssh_key_name:
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get_param: ssh_key_name
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server_name:
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get_param: web_server_name
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instance_flavor:
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get_param: web_instance_flavor
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image_id:
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get_param: image_id
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private_network_id: {get_attr: [network_setup, web_private_network_id]}
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app_lbaas_vip: {get_attr: [network_setup, app_lbaas_IP]}
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security_group: {get_attr: [network_setup, web_security_group_id]}
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pool_name: {get_attr: [network_setup, web_lbaas_pool_name]}
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metadata: {"metering.autoscale_group_name": "web_autoscale_group"}
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####################
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web_scaleup_policy:
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type: OS::Heat::ScalingPolicy
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properties:
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adjustment_type: change_in_capacity
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auto_scaling_group_id: { get_resource: web_autoscale_group }
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cooldown: 900
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scaling_adjustment: 1
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web_cpu_alarm_high:
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type: OS::Ceilometer::Alarm
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properties:
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meter_name: cpu_util
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statistic: avg
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period: 600
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evaluation_periods: 1
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threshold: 50
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repeat_actions: true
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alarm_actions:
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- {get_attr: [web_scaleup_policy, alarm_url]}
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matching_metadata: {'metadata.user_metadata.autoscale_group_name': "web_autoscale_group"}
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comparison_operator: gt
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web_scaledown_policy:
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type: OS::Heat::ScalingPolicy
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properties:
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adjustment_type: change_in_capacity
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auto_scaling_group_id: { get_resource: web_autoscale_group }
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cooldown: 900
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scaling_adjustment: -1
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web_cpu_alarm_low:
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type: OS::Ceilometer::Alarm
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properties:
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meter_name: cpu_util
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statistic: avg
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period: 600
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evaluation_periods: 1
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threshold: 20
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repeat_actions: true
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alarm_actions:
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- {get_attr: [web_scaledown_policy, alarm_url]}
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matching_metadata: {'metadata.user_metadata.autoscale_group_name': "web_autoscale_group"}
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comparison_operator: lt
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######################################
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#The outputs section defines output parameters that should be available to the user after a stack has been created.
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outputs:
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web_lbaas_ip:
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description: >
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This is the floating IP assigned to the WEB LoadBalancer.
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value: {get_attr: [network_setup, web_lbaas_IP]}
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app_lbaas_ip:
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description: >
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This is the floating IP assigned to the Application LoadBalancer.
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value: {get_attr: [network_setup, app_lbaas_IP]}
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web_scale_up_url:
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description: >
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This URL is the webhook to scale up the WEB autoscaling group. You
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can invoke the scale-up operation by doing an HTTP POST to this
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URL; no body nor extra headers are needed. You do need to be authenticated
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Example: source openrc; curl -X POST "<url>"
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value: {get_attr: [web_scaleup_policy, alarm_url]}
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web_scale_down_url:
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description: >
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This URL is the webhook to scale down the WEB autoscaling group.
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value: {get_attr: [web_scaledown_policy, alarm_url]}
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app_scale_up_url:
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description: >
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This URL is the webhook to scale up the application autoscaling group. You
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can invoke the scale-up operation by doing an HTTP POST to this
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URL; no body nor extra headers are needed.
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value: {get_attr: [app_scaleup_policy, alarm_url]}
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app_scale_down_url:
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description: >
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This URL is the webhook to scale down the application autoscaling group.
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value: {get_attr: [app_scaledown_policy, alarm_url]}
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