326 lines
8.8 KiB
YAML
326 lines
8.8 KiB
YAML
heat_template_version: 2013-05-23
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description: >
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This template will boot a Docker swarm cluster. A swarm cluster is made up
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of a single manager node, and N agent nodes. Every node in the cluster,
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including the manager, is running a Docker daemon and a swarm agent
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advertising it to the cluster. The manager is running an addition swarm
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manager container listening on port 2376. By default, the cluster is made
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up of one manager node and one agent node.
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parameters:
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#
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# REQUIRED PARAMETERS
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#
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ssh_key_name:
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type: string
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description: name of ssh key to be provisioned on our server
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external_network:
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type: string
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description: uuid/name of a network to use for floating ip addresses
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discovery_url:
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type: string
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description: url provided for node discovery
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#
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# OPTIONAL PARAMETERS
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#
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server_image:
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type: string
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default: fedora-atomic
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description: glance image used to boot the server
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server_flavor:
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type: string
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default: m1.small
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description: flavor to use when booting the server
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dns_nameserver:
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type: string
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description: address of a dns nameserver reachable in your environment
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default: 8.8.8.8
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number_of_nodes:
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type: string
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description: how many swarm nodes to spawn
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default: 1
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fixed_network_cidr:
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type: string
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description: network range for fixed ip network
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default: "10.0.0.0/24"
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resources:
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master_wait_handle:
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type: "AWS::CloudFormation::WaitConditionHandle"
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master_wait_condition:
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type: "AWS::CloudFormation::WaitCondition"
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depends_on:
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- swarm_manager
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properties:
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Handle:
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get_resource: master_wait_handle
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Timeout: 6000
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manager_wait_handle:
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type: "AWS::CloudFormation::WaitConditionHandle"
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manager_wait_condition:
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type: "AWS::CloudFormation::WaitCondition"
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depends_on:
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- swarm_manager
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properties:
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Handle:
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get_resource: manager_wait_handle
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Timeout: 6000
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agent_wait_handle:
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type: "AWS::CloudFormation::WaitConditionHandle"
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agent_wait_condition:
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type: "AWS::CloudFormation::WaitCondition"
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depends_on:
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- swarm_manager
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properties:
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Handle:
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get_resource: agent_wait_handle
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Timeout: 6000
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######################################################################
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#
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# network resources. allocate a network and router for our server.
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# it would also be possible to take advantage of existing network
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# resources (and have the deployer provide network and subnet ids,
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# etc, as parameters), but I wanted to minmize the amount of
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# configuration necessary to make this go.
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fixed_network:
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type: "OS::Neutron::Net"
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# This is the subnet on which we will deploy our server.
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fixed_subnet:
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type: "OS::Neutron::Subnet"
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properties:
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cidr: {get_param: fixed_network_cidr}
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network_id:
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get_resource: fixed_network
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dns_nameservers:
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- get_param: dns_nameserver
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# create a router attached to the external network provided as a
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# parameter to this stack.
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extrouter:
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type: "OS::Neutron::Router"
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properties:
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external_gateway_info:
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network:
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get_param: external_network
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# attached fixed_subnet to our extrouter router.
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extrouter_inside:
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type: "OS::Neutron::RouterInterface"
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properties:
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router_id:
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get_resource: extrouter
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subnet_id:
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get_resource:
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fixed_subnet
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######################################################################
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#
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# security groups. we need to permit network traffic of various
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# sorts.
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#
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secgroup_manager:
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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 # ssh
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port_range_max: 22
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- protocol: tcp
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port_range_min: 2375 # docker
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port_range_max: 2376 # swarm-manager
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- protocol: udp
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######################################################################
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#
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# software configs. these are components that are combined into
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# a multipart MIME user-data archive.
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#
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write_heat_params:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config:
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str_replace:
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template: {get_file: fragments/write-heat-params.yaml}
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params:
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"$WAIT_HANDLE": {get_resource: master_wait_handle}
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remove_docker_key:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/remove-docker-key.sh}
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write_docker_service:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/write-docker-service.yaml}
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write_docker_socket:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/write-docker-socket.yaml}
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write_docker_tcp_socket:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/write-docker-tcp-socket.yaml}
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write_swarm_agent_service:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config:
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str_replace:
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template: {get_file: fragments/write-swarm-agent-service.yaml}
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params:
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"$NODE_IP": {get_attr: [swarm_manager_eth0, fixed_ips, 0, ip_address]}
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"$DISCOVERY_URL": {get_param: discovery_url}
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"$WAIT_HANDLE": {get_resource: agent_wait_handle}
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write_swarm_manager_service:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config:
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str_replace:
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template: {get_file: fragments/write-swarm-manager-service.yaml}
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params:
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"$DISCOVERY_URL": {get_param: discovery_url}
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"$WAIT_HANDLE": {get_resource: manager_wait_handle}
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enable_services:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config:
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str_replace:
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template: {get_file: fragments/enable-services.sh}
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params:
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"$NODE_SERVICES": "docker-tcp.socket swarm-agent swarm-manager"
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cfn_signal:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/cfn-signal.sh}
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disable_selinux:
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type: "OS::Heat::SoftwareConfig"
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properties:
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group: ungrouped
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config: {get_file: fragments/disable-selinux.sh}
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swarm_manager_init:
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type: "OS::Heat::MultipartMime"
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properties:
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parts:
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- config: {get_resource: disable_selinux}
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- config: {get_resource: remove_docker_key}
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- config: {get_resource: write_heat_params}
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- config: {get_resource: write_docker_service}
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- config: {get_resource: write_docker_socket}
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- config: {get_resource: write_docker_tcp_socket}
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- config: {get_resource: write_swarm_agent_service}
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- config: {get_resource: write_swarm_manager_service}
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- config: {get_resource: enable_services}
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- config: {get_resource: cfn_signal}
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######################################################################
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#
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# Swarm_manager is a special node running the swarm manage daemon along
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# side the swarm agent.
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#
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swarm_manager:
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type: "OS::Nova::Server"
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depends_on:
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- extrouter_inside
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properties:
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image:
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get_param: server_image
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flavor:
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get_param: server_flavor
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key_name:
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get_param: ssh_key_name
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user_data_format: RAW
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user_data: {get_resource: swarm_manager_init}
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networks:
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- port:
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get_resource: swarm_manager_eth0
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swarm_manager_eth0:
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type: "OS::Neutron::Port"
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properties:
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network_id:
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get_resource: fixed_network
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security_groups:
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- get_resource: secgroup_manager
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fixed_ips:
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- subnet_id:
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get_resource: fixed_subnet
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swarm_manager_floating:
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type: "OS::Neutron::FloatingIP"
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depends_on:
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- extrouter_inside
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properties:
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floating_network:
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get_param: external_network
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port_id:
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get_resource: swarm_manager_eth0
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swarm_nodes:
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type: "OS::Heat::ResourceGroup"
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depends_on:
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- extrouter_inside
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properties:
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count: {get_param: number_of_nodes}
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resource_def:
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type: swarmnode.yaml
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properties:
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ssh_key_name: {get_param: ssh_key_name}
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server_image: {get_param: server_image}
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server_flavor: {get_param: server_flavor}
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fixed_network_id: {get_resource: fixed_network}
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fixed_subnet_id: {get_resource: fixed_subnet}
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external_network: {get_param: external_network}
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discovery_url: {get_param: discovery_url}
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outputs:
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swarm_manager:
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value: {get_attr: [swarm_manager_floating, floating_ip_address]}
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swarm_nodes:
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value: {get_attr: [swarm_nodes, swarm_node_ip]}
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swarm_nodes_external:
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value: {get_attr: [swarm_nodes, swarm_node_external_ip]}
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discovery_url:
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value: {get_param: discovery_url}
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