使用 Terraform 创建 Filebeat 配置 [英] Creating Filebeat configuration with Terraform

问题描述

我正在尝试在使用 Terraform 创建实例后创建 Filebeat 配置文件:

I am trying to create a Filebeat configuration file after creating a instance with Terraform:

resource "local_file" "greylogIP" {
  content  = <<EOF
filebeat.inputs:
- type: log
  enabled: false
  paths:
    - /var/log/*.log
filebeat.config.modules:
  path: '$'{path.config}/modules.d/*.yml
  reload.enabled: false
setup.template.settings:
  index.number_of_shards: 3
output.logstash:
  hosts: ["${aws_instance.web.public_ip}:5014"]
  EOF
  filename = "filebeat.conf"
} 

我需要传递 ${aws_instance.web.public_ip} 变量来分配动态 IP，但 Terraform 也尝试插入 path: '$'{path.config}/modules.d/*.yml 这是 Filebeat 配置的一部分，会抛出错误.

where I need to pass the ${aws_instance.web.public_ip} variable to allocate the dynamic IP but some how Terraform is also trying to interpolate path: '$'{path.config}/modules.d/*.yml which is a part of the Filebeat configuration and throws an error.

如何将 path: '$'{path.config}/modules.d/*.yml 作为字符串传递?

How can I pass the path: '$'{path.config}/modules.d/*.yml as a string instead?

推荐答案

您需要使用双美元 ($$) 转义文字美元 ($).

You need to escape a literal dollar ($) with a double dollar ($$).

插值文档涵盖了这一点:

您可以使用双美元符号转义插值:$${foo} 将呈现为文字 ${foo}.

You can escape interpolation with double dollar signs: $${foo} will be rendered as a literal ${foo}.

模板中进一步提到了它文档:

重要提示:内联模板中的模板变量(例如上面的 consul_address)必须用双 $ 转义.Terraform 通常会在执行模板之前处理未转义的插值.

Important: Template variables in an inline template (such as consul_address above) must be escaped with a double-$. Unescaped interpolations will be processed by Terraform normally prior to executing the template.

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