Terraform，“忽略更改"；和子块

问题描述

我在 terraform 文件中配置了 AWS CodePipeline，如下所示:

I have a AWS CodePipeline configured in a terraform file, like this:

resource {
    name = "Cool Pipeline"
    ...

    stage {
        name = "Source"
        ...

        action {
            name = "Source"
            ...

            configuration {
                Owner = "Me"
                Repo = "<git-repo-uri>"
                Branch = develop
                OAuthToken = "b3287d649a28374e9283c749cc283ad74"
            }
        }
    }

    lifecycle {
        ignore_changes = "OAuthToken"
    }
}

忽略令牌的原因是 AWS API 没有向 terraform 显示该令牌，而是 AWS API 使用 aws codepipeline get-pipeline <name> 输出它:

The reason for ignoring the token, is that the AWS API doesn't show that token to terraform, instead AWS API outputs this with aws codepipeline get-pipeline <name>:

"pipeline": {
    "stages": {
        "name": "Source",
        "actions": {
            "configuration": {
                "OAuthToken": "****"
            }
        }
    }
}

结果是，当我执行 terraform plan时，它显示它想要更新该令牌，如下所示:

Result is, when I perform the terraform planit shows me it wants to update that token, like so:

module.modulename.aws_codepipeline.codepipeline
      stage.0.action.0.configuration.%:          "3" => "4"
      stage.0.action.0.configuration.OAuthToken: "" => "b3287d649a28374e9283c749cc283ad74"

我的问题是，我怎样才能让 ignore_changes 生效?我试过这个没有任何成功:

My question is, how can I get the ignore_changes to take effect? I've tried this without any success:

ignore_changes = ["OAuthToken"]
ignore_changes = ["oauthtoken"]
ignore_changes = ["stage.action.configuration.OAuthToken"]

我在谷歌上搜索到的所有示例都显示了如何在同一块级别上忽略.

All examples I've found googling just shows how to ignore on the same block level.

(令牌是这个文本是假的.)

(The token is this text is fake.)

推荐答案

terraform plan 输出提示的这种语法解决了问题:

This syntax, as hinted by terraform plan output, solved the problem:

ignore_changes = [
    "stage.0.action.0.configuration.OAuthToken",
    "stage.0.action.0.configuration.%"
]

另一种解决方法是添加GITHUB_TOKEN系统环境变量，以token为值.这样你就不需要 tf 文件中的 ignore_changes 指令了.

Another way to solve it is to add the GITHUB_TOKEN system environment variable, with the token as the value. This way you do not need the ignore_changes directive in the tf files.

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