问题是当count
大于1时,堆栈不会构建。
原因是因为- port: { get_resource: test_port }
对于每个实例都不是唯一的。
收到错误代码:CREATE_FAILED Conflict:resources.compute_nodes.resources [3]:端口XXX仍在使用中。
问题:如何使- port: { get_resource: test_port }
对每个实例都是唯一的?
compute_nodes:
type: OS::Heat::ResourceGroup
properties:
count: 3
resource_def:
type: OS::Nova::Server
properties:
name: test-%index%
key_name: { get_param: key_name }
image: "Ubuntu Server 18.04 LTS (Bionic Beaver) amd64"
flavor: m1.small
networks:
- port: { get_resource: test_port }
test_port:
type: OS::Neutron::Port
properties:
network_id: { get_resource: private_net }
security_groups: { get_param: sec_group_lin }
fixed_ips:
- subnet_id: { get_resource: private_subnet }
test_floating_ip:
type: OS::Neutron::FloatingIP
properties:
floating_network: { get_param: public_net }
port_id: { get_resource: test_port }
利用“depends_on”来对齐模板的执行流程
compute_nodes:
type: OS::Heat::ResourceGroup
depends_on: [test_port, test_floating_ip]
properties:
count: 3
resource_def:
type: OS::Nova::Server
properties:
name: test-%index%
key_name: { get_param: key_name }
image: "Ubuntu Server 18.04 LTS (Bionic Beaver) amd64"
flavor: m1.small
networks:
- port: { get_resource: test_port }
test_port:
type: OS::Neutron::Port
properties:
network_id: { get_resource: private_net }
security_groups: { get_param: sec_group_lin }
fixed_ips:
- subnet_id: { get_resource: private_subnet }
test_floating_ip:
type: OS::Neutron::FloatingIP
depends_on: [test_port]
properties:
floating_network: { get_param: public_net }
port_id: { get_resource: test_port }
您的堆栈尝试将相同的端口连接到不同的Nova服务器,因此这是失败的。解决方案是创建一个嵌套堆栈,它将创建您的3个资源(Nova服务器,Neutron端口和Neutron浮动IP),然后您的主堆栈将实现一个资源组来“扩展”您的服务器:
Nested_stack:nested_stack.yaml
parameter:
index:
type: number
sec_group_lin:
type: string
key_name:
type: string
public_net:
type: string
resources:
compute_nodes:
type: OS::Nova::Server
depends_on: [test_port, test_floating_ip]
properties:
name: { list-join: ['-', ['test', {get_param: index} ] ] }
key_name: { get_param: key_name }
image: "Ubuntu Server 18.04 LTS (Bionic Beaver) amd64"
flavor: m1.small
networks:
- port: { get_resource: test_port }
test_port:
type: OS::Neutron::Port
properties:
network_id: { get_resource: private_net }
security_groups: { get_param: sec_group_lin }
fixed_ips:
- subnet_id: { get_resource: private_subnet }
test_floating_ip:
type: OS::Neutron::FloatingIP
depends_on: [test_port]
properties:
floating_network: { get_param: public_net }
port_id: { get_resource: test_port }
然后你的主堆栈看起来像:
parameters:
key_name:
type: string
public_net:
type: string
sec_group_lin:
type: string
resources:
compute_nodes:
type: OS::Heat::ResourceGroup
properties:
count: 3
resource_def:
type: nested_stack.yaml
properties:
index: %index%
key_name: {get_param: key_name}
public_net: { get_param: public_net }
sec_group_lin: { get_param: sec_group_lin }
这将创建x(此处x = 3,因为您的计数设置为3)服务器,每个服务器都有自己的测试端口和测试浮动IP。