openstack-virtual-baremetal/templates/dhcp-relay.yaml

heat_template_version: 2016-10-14

parameters:

  key_name:
    type: string
    default: default
    description: Nova keypair to inject into the undercloud and bmc

  dhcp_relay_flavor:
    type: string
    default: m1.small
    description: The Nova flavor to use for the dhcrelay instance

  dhcp_relay_image:
    type: string
    default: CentOS-7-x86_64-GenericCloud
    description: |
      The base image for the dhcrelay instance.  A CentOS 7 image is currently
      the only one supported.

  dhcp_relay_provision_address:
    type: string
    description: DHCP relay address on the provision network subnet
    default: 192.168.24.253

  dhcp_relay_provision2_address:
    type: string
    description: DHCP relay address on the provision2 network subnet
    default: 192.168.25.253

  dhcp_relay_provision3_address:
    type: string
    description: DHCP relay address on the provision3 network subnet
    default: 192.168.26.253

  dhcp_ips:
    type: json
    description: |
      The IP addresses of DHCP servers to relay DHCP requests to.

  networks:
    type: json

  private_net:
    type: string


resources:
  dhcp_relay_port_private:
    type: OS::Neutron::Port
    properties:
      name: dhcp_relay_port_private
      network: {get_param: private_net}

  dhcp_relay_port_provision:
    type: OS::Neutron::Port
    properties:
      name: dhcp_relay_port_provision
      network: {get_param: [networks, provision]}
      port_security_enabled: False
      fixed_ips:
       - ip_address: {get_param: dhcp_relay_provision_address}

  dhcp_relay_port_provision2:
    type: OS::Neutron::Port
    properties:
      name: dhcp_relay_port_provision2
      network: {get_param: [networks, provision2]}
      port_security_enabled: False
      fixed_ips:
       - ip_address: {get_param: dhcp_relay_provision2_address}

  dhcp_relay_port_provision3:
    type: OS::Neutron::Port
    properties:
      name: dhcp_relay_port_provision3
      network: {get_param: [networks, provision3]}
      port_security_enabled: False
      fixed_ips:
       - ip_address: {get_param: dhcp_relay_provision3_address}

  init_networks:
    type: OS::Heat::CloudConfig
    properties:
      cloud_config:
        network:
          version: 2
          ethernets:
            eth0:
              dhcp4: false
              addresses:
                - list_join:
                    - /
                    - - {get_attr: [dhcp_relay_port_provision, fixed_ips, 0, ip_address]}
                      - {str_split: ['/', {get_attr: [dhcp_relay_port_provision, subnets, 0, cidr]}, 1]}
            eth1:
              dhcp4: false
              addresses:
                - list_join:
                    - /
                    - - {get_attr: [dhcp_relay_port_provision2, fixed_ips, 0, ip_address]}
                      - {str_split: ['/', {get_attr: [dhcp_relay_port_provision2, subnets, 0, cidr]}, 1]}
            eth2:
              dhcp4: false
              addresses:
                - list_join:
                    - /
                    - - {get_attr: [dhcp_relay_port_provision3, fixed_ips, 0, ip_address]}
                      - {str_split: ['/', {get_attr: [dhcp_relay_port_provision3, subnets, 0, cidr]}, 1]}
            eth3:
              dhcp4: true

  init_packages:
    type: OS::Heat::CloudConfig
    properties:
      cloud_config:
        package_upgrade: true
        packages:
          - dhcp

  init_files:
    type: OS::Heat::CloudConfig
    properties:
      cloud_config:
        write_files:
          - path: /etc/systemd/system/dhcrelay.service
            content:
              str_replace:
                template: |
                  [Unit]
                  Description=DHCP Relay Agent Daemon
                  Documentation=man:dhcrelay(8)
                  Wants=network-online.target
                  After=network-online.target

                  [Service]
                  Type=simple
                  ExecStart=/usr/sbin/dhcrelay -d --no-pid $dhcp_ips -i eth1 -i eth2 -i eth3
                  StandardError=null

                  [Install]
                  WantedBy=multi-user.target
                params:
                  $dhcp_ips:
                     list_join:
                      - ' '
                      - {get_param: dhcp_ips}
          - path: /etc/sysctl.d/98-rp-filter.conf
            content: |
              net.ipv4.conf.eth1.rp_filter = 0
              net.ipv4.conf.eth2.rp_filter = 0
              net.ipv4.conf.eth3.rp_filter = 0

  init_runcmd:
    type: OS::Heat::CloudConfig
    properties:
      cloud_config:
        runcmd:
          - ['sysctl','--system']
          - ['systemctl', 'daemon-reload']
          - ['systemctl', 'enable', 'dhcrelay.service']
          - ['systemctl', 'start', 'dhcrelay.service']
          - ['systemctl', 'status', 'dhcrelay.service']

  dhcrelay_init:
    type: OS::Heat::MultipartMime
    properties:
      parts:
        - config: {get_resource: init_networks}
        - config: {get_resource: init_packages}
        - config: {get_resource: init_files}
        - config: {get_resource: init_runcmd}

  dhcp_relay_server:
    type: OS::Nova::Server
    properties:
      name: dhcrelay
      flavor: {get_param: dhcp_relay_flavor}
      image: {get_param: dhcp_relay_image}
      key_name: {get_param: key_name}
      networks:
        - {port: {get_resource: dhcp_relay_port_private}}
        - {port: {get_resource: dhcp_relay_port_provision}}
        - {port: {get_resource: dhcp_relay_port_provision2}}
        - {port: {get_resource: dhcp_relay_port_provision3}}
      config_drive: true
      user_data_format: RAW
      user_data: {get_resource: dhcrelay_init}