heat_template_version: 2014-10-16

description: >
  This is a nested stack that defines a single Kubernetes master, This stack is
  included by an ResourceGroup resource in the parent template
  (kubecluster.yaml).

parameters:

  server_image:
    type: string
    description: glance image used to boot the server

  master_flavor:
    type: string
    description: flavor to use when booting the server

  ssh_key_name:
    type: string
    description: name of ssh key to be provisioned on our server

  external_network:
    type: string
    description: uuid/name of a network to use for floating ip addresses

  portal_network_cidr:
    type: string
    description: >
      address range used by kubernetes for service portals

  kube_allow_priv:
    type: string
    description: >
      whether or not kubernetes should permit privileged containers.
    constraints:
      - allowed_values: ["true", "false"]

  docker_volume_size:
    type: number
    description: >
      size of a cinder volume to allocate to docker for container/image
      storage

  docker_storage_driver:
    type: string
    description: docker storage driver name
    default: "devicemapper"
    constraints:
      - allowed_values: ["devicemapper", "overlay"]

  flannel_network_cidr:
    type: string
    description: network range for flannel overlay network

  flannel_network_subnetlen:
    type: number
    description: size of subnet assigned to each master

  flannel_backend:
    type: string
    description: >
      specify the backend for flannel, default udp backend
    constraints:
      - allowed_values: ["udp", "vxlan", "host-gw"]

  system_pods_initial_delay:
    type: number
    description: >
      health check, time to wait for system pods (podmaster, scheduler) to boot
      (in seconds)
    default: 30

  system_pods_timeout:
    type: number
    description: >
      health check, timeout for system pods (podmaster, scheduler) to answer.
      (in seconds)
    default: 5

  discovery_url:
    type: string
    description: >
      Discovery URL used for bootstrapping the etcd cluster.

  tls_disabled:
    type: boolean
    description: whether or not to enable TLS

  kubernetes_port:
    type: number
    description: >
      The port which are used by kube-apiserver to provide Kubernetes
      service.

  cluster_uuid:
    type: string
    description: identifier for the cluster this template is generating

  magnum_url:
    type: string
    description: endpoint to retrieve TLS certs from

  api_public_address:
    type: string
    description: Public IP address of the Kubernetes master server.
    default: ""

  api_private_address:
    type: string
    description: Private IP address of the Kubernetes master server.
    default: ""

  fixed_network:
    type: string
    description: Network from which to allocate fixed addresses.

  fixed_subnet:
    type: string
    description: Subnet from which to allocate fixed addresses.

  network_driver:
    type: string
    description: network driver to use for instantiating container networks

  secgroup_base_id:
    type: string
    description: ID of the security group for base.

  secgroup_kube_master_id:
    type: string
    description: ID of the security group for kubernetes master.

  api_pool_id:
    type: string
    description: ID of the load balancer pool of k8s API server.

  etcd_pool_id:
    type: string
    description: ID of the load balancer pool of etcd server.

  auth_url:
    type: string
    description: >
      url for kubernetes to authenticate

  username:
    type: string
    description: >
      user account

  password:
    type: string
    description: >
      user password

  tenant_name:
    type: string
    description: >
      tenant name

  http_proxy:
    type: string
    description: http proxy address for docker

  https_proxy:
    type: string
    description: https proxy address for docker

  no_proxy:
    type: string
    description: no proxies for docker

  kube_version:
    type: string
    description: version of kubernetes used for kubernetes cluster

  trustee_user_id:
    type: string
    description: user id of the trustee

  trustee_password:
    type: string
    description: password of the trustee
    hidden: true

  trust_id:
    type: string
    description: id of the trust which is used by the trustee
    hidden: true

  insecure_registry_url:
    type: string
    description: insecure registry url

  wc_curl_cli:
    type: string
    description : >
      Wait condition notify command for Master.

resources:

  ######################################################################
  #
  # resource that exposes the IPs of either the kube master or the API
  # LBaaS pool depending on whether LBaaS is enabled for the cluster.
  #

  api_address_switch:
    type: Magnum::ApiGatewaySwitcher
    properties:
      pool_public_ip: {get_param: api_public_address}
      pool_private_ip: {get_param: api_private_address}
      master_public_ip: ''
      master_private_ip: ''

  ######################################################################
  #
  # software configs.  these are components that are combined into
  # a multipart MIME user-data archive.
  #

  write_heat_params:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: ../../common/templates/kubernetes/fragments/write-heat-params-master.yaml}
          params:
            "$KUBE_API_PUBLIC_ADDRESS": {get_attr: [api_address_switch, public_ip]}
            "$KUBE_API_PRIVATE_ADDRESS": {get_attr: [api_address_switch, private_ip]}
            "$KUBE_API_PORT": {get_param: kubernetes_port}
            "$KUBE_ALLOW_PRIV": {get_param: kube_allow_priv}
            "$DOCKER_VOLUME": 'None'
            "$DOCKER_VOLUME_SIZE": {get_param: docker_volume_size}
            "$DOCKER_STORAGE_DRIVER": {get_param: docker_storage_driver}
            "$NETWORK_DRIVER": {get_param: network_driver}
            "$FLANNEL_NETWORK_CIDR": {get_param: flannel_network_cidr}
            "$FLANNEL_NETWORK_SUBNETLEN": {get_param: flannel_network_subnetlen}
            "$FLANNEL_BACKEND": {get_param: flannel_backend}
            "$SYSTEM_PODS_INITIAL_DELAY": {get_param: system_pods_initial_delay}
            "$SYSTEM_PODS_TIMEOUT": {get_param: system_pods_timeout}
            "$PORTAL_NETWORK_CIDR": {get_param: portal_network_cidr}
            "$ETCD_DISCOVERY_URL": {get_param: discovery_url}
            "$AUTH_URL": {get_param: auth_url}
            "$USERNAME": {get_param: username}
            "$PASSWORD": {get_param: password}
            "$TENANT_NAME": {get_param: tenant_name}
            "$CLUSTER_SUBNET": {get_param: fixed_subnet}
            "$TLS_DISABLED": {get_param: tls_disabled}
            "$CLUSTER_UUID": {get_param: cluster_uuid}
            "$MAGNUM_URL": {get_param: magnum_url}
            "$HTTP_PROXY": {get_param: http_proxy}
            "$HTTPS_PROXY": {get_param: https_proxy}
            "$NO_PROXY": {get_param: no_proxy}
            "$KUBE_VERSION": {get_param: kube_version}
            "$WAIT_CURL": {get_param: wc_curl_cli}
            "$TRUSTEE_USER_ID": {get_param: trustee_user_id}
            "$TRUSTEE_PASSWORD": {get_param: trustee_password}
            "$TRUST_ID": {get_param: trust_id}
            "$INSECURE_REGISTRY_URL": {get_param: insecure_registry_url}
            "$ENABLE_CINDER": "False"

  make_cert:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/make-cert.sh}

  configure_docker_storage:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          params:
            $configure_docker_storage_driver: {get_file: ../../common/templates/fragments/configure_docker_storage_driver_atomic.sh}
          template: {get_file: ../../common/templates/fragments/configure-docker-storage.sh}

  configure_etcd:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/configure-etcd.sh}

  write_kube_os_config:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/write-kube-os-config.sh}

  configure_kubernetes:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/configure-kubernetes-master.sh}

  write_network_config:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/write-network-config.sh}

  network_config_service:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/network-config-service.sh}

  enable_services:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/enable-services-master.sh}

  kube_examples:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/kube-examples.yaml}

  network_service:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/network-service.sh}

  enable_kube_controller_manager_scheduler:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/enable-kube-controller-manager-scheduler.sh}

  kube_system_namespace_service:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/kube-system-namespace-service.sh}

  kube_ui_service:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/kube-ui-service.sh}

  enable_kube_proxy:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/enable-kube-proxy-master.sh}

  master_wc_notify:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/wc-notify-master.sh}

  disable_selinux:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/disable-selinux.sh}

  add_proxy:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: ../../common/templates/kubernetes/fragments/add-proxy.sh}

  kube_master_init:
    type: OS::Heat::MultipartMime
    properties:
      parts:
        - config: {get_resource: disable_selinux}
        - config: {get_resource: write_heat_params}
        - config: {get_resource: configure_etcd}
        - config: {get_resource: write_kube_os_config}
        - config: {get_resource: make_cert}
        - config: {get_resource: configure_docker_storage}
        - config: {get_resource: configure_kubernetes}
        - config: {get_resource: add_proxy}
        - config: {get_resource: enable_services}
        - config: {get_resource: write_network_config}
        - config: {get_resource: network_config_service}
        - config: {get_resource: network_service}
        - config: {get_resource: kube_system_namespace_service}
        - config: {get_resource: enable_kube_controller_manager_scheduler}
        - config: {get_resource: enable_kube_proxy}
        - config: {get_resource: kube_ui_service}
        - config: {get_resource: kube_examples}
        - config: {get_resource: master_wc_notify}

  ######################################################################
  #
  # a single kubernetes master.
  #

  # do NOT use "_" (underscore) in the Nova server name
  # it creates a mismatch between the generated Nova name and its hostname
  # which can lead to weird problems
  kube-master:
    type: OS::Nova::Server
    properties:
      image: {get_param: server_image}
      flavor: {get_param: master_flavor}
      key_name: {get_param: ssh_key_name}
      user_data_format: RAW
      user_data: {get_resource: kube_master_init}
      networks:
        - network: {get_param: fixed_network}

  kube_master_floating:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network:
        get_param: external_network
      port_id:
        get_attr: [kube-master, addresses, {get_param: fixed_network}, 0, port]

  api_pool_member:
    type: Magnum::Optional::Neutron::LBaaS::PoolMember
    properties:
      pool: {get_param: api_pool_id}
      address: {get_attr: [kube-master, networks, private, 0]}
      subnet: { get_param: fixed_subnet }
      protocol_port: {get_param: kubernetes_port}

  etcd_pool_member:
    type: Magnum::Optional::Neutron::LBaaS::PoolMember
    properties:
      pool: {get_param: etcd_pool_id}
      address: {get_attr: [kube-master, networks, private, 0]}
      subnet: { get_param: fixed_subnet }
      protocol_port: 2379

outputs:

  kube_master_ip:
    value: {get_attr: [kube-master, networks, private, 0]}
    description: >
      This is the "private" IP address of the Kubernetes master node.

  kube_master_external_ip:
    value: {get_attr: [kube_master_floating, floating_ip_address]}
    description: >
      This is the "public" IP address of the Kubernetes master node.
