Container Infrastructure Management Service for OpenStack
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heat_template_version: 2013-05-23
description: >
This is a nested stack that defines a single Kubernetes minion,
based on a vanilla Fedora 20 cloud image. This stack is included by
a ResourceGroup resource in the parent template (kubecluster-coreos.yaml).
parameters:
server_image:
type: string
description: glance image used to boot the server
minion_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
kube_allow_priv:
type: string
description: >
whether or not kubernetes should permit privileged containers.
constraints:
- allowed_values: ["true", "false"]
network_driver:
type: string
description: network driver to use for instantiating container networks
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.
kube_version:
type: string
description: version of kubernetes used for kubernetes cluster
kube_master_ip:
type: string
description: IP address of the Kubernetes master server.
etcd_server_ip:
type: string
description: IP address of the Etcd server.
fixed_network:
type: string
description: Network from which to allocate fixed addresses.
fixed_subnet:
type: string
description: Subnet from which to allocate fixed addresses.
flannel_network_cidr:
type: string
description: network range for flannel overlay network
wait_condition_timeout:
type: number
description: >
timeout for the Wait Conditions
resources:
minion_wait_handle:
type: OS::Heat::WaitConditionHandle
minion_wait_condition:
type: OS::Heat::WaitCondition
depends_on: kube-minion
properties:
handle: {get_resource: minion_wait_handle}
timeout: {get_param: wait_condition_timeout}
######################################################################
#
# security groups. we need to permit network traffic of various
# sorts.
#
secgroup_all_open:
type: OS::Neutron::SecurityGroup
properties:
rules:
- protocol: icmp
- protocol: tcp
- protocol: udp
######################################################################
#
# 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: fragments/write-heat-params.yaml}
params:
$KUBE_ALLOW_PRIV: {get_param: kube_allow_priv}
$KUBE_MASTER_IP: {get_param: kube_master_ip}
$WAIT_CURL: {get_attr: [minion_wait_handle, curl_cli]}
$KUBE_API_PORT: {get_param: kubernetes_port}
$TLS_DISABLED: {get_param: tls_disabled}
$NETWORK_DRIVER: {get_param: network_driver}
$ETCD_SERVER_IP: {get_param: etcd_server_ip}
$KUBE_VERSION: {get_param: kube_version}
enable_network_service:
type: OS::Heat::SoftwareConfig
properties:
group: ungrouped
config: {get_file: fragments/enable-network-service-coreos.yaml}
enable_kubelet:
type: OS::Heat::SoftwareConfig
properties:
group: ungrouped
config: {get_file: fragments/enable-kubelet-minion-coreos.yaml}
enable_kube_proxy:
type: OS::Heat::SoftwareConfig
properties:
group: ungrouped
config: {get_file: fragments/enable-kube-proxy-minion-coreos.yaml}
wc_notify:
type: OS::Heat::SoftwareConfig
properties:
group: ungrouped
config: {get_file: fragments/wc-notify-coreos.yaml}
kube_minion_init:
type: OS::Heat::SoftwareConfig
properties:
group: ungrouped
config:
str_replace:
template: |
$write_heat_params
$enable_network_service
$enable_kubelet
$enable_kube_proxy
$wc_notify
coreos:
units:
- name: "enable-network-service.service"
command: "start"
- name: "enable-kubelet.service"
command: "start"
- name: "enable-kube-proxy.service"
command: "start"
- name: "wc-notify.service"
command: "start"
params:
"$write_heat_params": {get_attr: [write_heat_params, config]}
"$enable_network_service": {get_attr: [enable_network_service, config]}
"$enable_kubelet": {get_attr: [enable_kubelet, config]}
"$enable_kube_proxy": {get_attr: [enable_kube_proxy, config]}
"$wc_notify": {get_attr: [wc_notify, config]}
# Important: the name for the heat resource kube-minion below must
# not contain "_" (underscore) because it will be used in the
# hostname. Because DNS domain name does not allow "_", the "_"
# will be converted to a "-" and this will make the hostname different
# from the Nova instance name. This in turn will break the load
# balancer feature in Kubernetes.
kube-minion:
type: OS::Nova::Server
properties:
image: {get_param: server_image}
flavor: {get_param: minion_flavor}
key_name: {get_param: ssh_key_name}
user_data_format: RAW
user_data: {get_resource: kube_minion_init}
networks:
- port: {get_resource: kube_minion_eth0}
kube_minion_eth0:
type: OS::Neutron::Port
properties:
network: {get_param: fixed_network}
security_groups:
- get_resource: secgroup_all_open
fixed_ips:
- subnet: {get_param: fixed_subnet}
allowed_address_pairs:
- ip_address: {get_param: flannel_network_cidr}
replacement_policy: AUTO
kube_minion_floating:
type: OS::Neutron::FloatingIP
properties:
floating_network: {get_param: external_network}
port_id: {get_resource: kube_minion_eth0}
outputs:
kube_minion_ip:
value: {get_attr: [kube_minion_eth0, fixed_ips, 0, ip_address]}
kube_minion_external_ip:
value: {get_attr: [kube_minion_floating, floating_ip_address]}
OS::stack_id:
value: {get_attr: [kube_minion_eth0, fixed_ips, 0, ip_address]}