需要使用comma_delimited_list中的资源组中的动态值替换user_data。
%index%无效。
heat_template_version: 2015-10-15
test_parameter:
type: comma_delimited_list
label: test param list
description: test descr
default: 'test_param_1,test_param_2'
.......
......
type: OS::Heat::ResourceGroup
properties:
.........
.........
user_data:
str_replace:
template: |
get the local value of the instance : $val
params:
$val: { get_param: [ test_parameter, %index% ] }
如何将josn / list值传递给HEAT-user_data
中的模板答案 0 :(得分:0)
可悲的是,基于aws-cloudformation仍然局限于你通常可以做的事情,而特定于热量的语言(仍然基于aws-cloudformation)受到同样的限制。
通常情况下,您可以拥有的最佳解决方案是选择"列表位于模板顶部,并将一些选择传递给您的资源。在以下示例中,其中一个选项要求安装特定的Web应用程序(来自nginx和apache),并将其作为变量传递给模板的用户数据部分:
heat_template_version: 2015-04-30
description: >
Hello world HOT template that just defines a single server.
Contains just base features to verify base HOT support.
parameters:
key_name:
type: string
description: Name of an existing key pair to use for the server
default: "topcat-01"
constraints:
- custom_constraint: nova.keypair
flavor:
type: string
description: Flavor for the server to be created
default: m1.normal
constraints:
- custom_constraint: nova.flavor
image:
type: string
description: Image ID or image name to use for the server
default: Ubuntu-1404lts-32-Cloud
constraints:
- custom_constraint: glance.image
my_network:
type: string
description: Neutron Network
default: public-internet-access
constraints:
- custom_constraint: neutron.network
application-install:
type: string
default: apache
constraints:
- allowed_values: [apache, nginx]
description: Value must be one of 'apache', or 'nginx'
resources:
server:
type: OS::Nova::Server
properties:
key_name: { get_param: key_name }
image: { get_param: image }
flavor: { get_param: flavor }
security_groups:
- default
name: test-single-topcat-instance
networks:
- network: { get_param: my_network }
user_data_format: RAW
user_data:
str_replace:
template: |
#!/bin/bash
myapp="$selectedapp01"
echo "MY APP IS $myapp"
PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
case $myapp in
apache)
echo "INSTALLING APACHE"
if [ -f /etc/debian_version ]
then
aptitude -y update
aptitude -y install apache2
fi
if [ -f /etc/redhat-release ]
then
yum -y install httpd
chkconfig httpd on
echo "" >> /var/www/html/index.html
service httpd start
fi
;;
nginx)
echo "INSTALLING NGINX"
if [ -f /etc/debian_version ]
then
aptitude -y update
aptitude -y install nginx-full
fi
if [ -f /etc/redhat-release ]
then
yum -y install nginx
chkconfig nginx on
service nginx start
fi
;;
esac
params:
$selectedapp01: {get_param: application-install}
outputs:
server_networks:
description: The networks of the deployed server
value: { get_attr: [server, networks] }
从上面的示例中," application-install"参数(可以是apache或nginx)将被解释为" $ selectedapp01"在用户数据部分的末尾,以及" $ myapp" (myapp =" $ selectedapp01")在用户数据的开头。
这不是完美的,但这是正常的方式。大多数云形成部署工具都是从一组"问题和答案"中构建最终模板。你完成了静态(半静态)模板。
这个我在这里添加的例子,会问你很多东西并设置一些默认值。
希望它有所帮助。