{"id":49147,"date":"2023-08-06T22:19:30","date_gmt":"2023-12-24T12:14:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e6%88%91%e5%b0%9d%e8%af%95%e5%9c%a8terraform%e6%a8%a1%e5%9d%97%e4%b8%ad%e4%bd%bf%e7%94%a8for_each%e6%97%b6%e9%81%87%e5%88%b0%e4%ba%86%e9%94%99%e8%af%af%e3%80%82\/"},"modified":"2024-04-30T17:18:25","modified_gmt":"2024-04-30T09:18:25","slug":"%e5%bd%93%e6%88%91%e5%b0%9d%e8%af%95%e5%9c%a8terraform%e6%a8%a1%e5%9d%97%e4%b8%ad%e4%bd%bf%e7%94%a8for_each%e6%97%b6%e9%81%87%e5%88%b0%e4%ba%86%e9%94%99%e8%af%af%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e6%88%91%e5%b0%9d%e8%af%95%e5%9c%a8terraform%e6%a8%a1%e5%9d%97%e4%b8%ad%e4%bd%bf%e7%94%a8for_each%e6%97%b6%e9%81%87%e5%88%b0%e4%ba%86%e9%94%99%e8%af%af%e3%80%82\/","title":{"rendered":"\u5f53\u6211\u5c1d\u8bd5\u5728Terraform\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u65f6\u9047\u5230\u4e86\u9519\u8bef"},"content":{"rendered":"

\u524d\u63d0 t\u00ed)<\/h1>\n

\u5728\u516c\u53f8\u7684\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528Terraform\u6765\u7ba1\u7406\u8d44\u6e90\u3002\u4f46\u662f\uff0c\u5f53\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528Terraform\u7684\u6a21\u5757\u5c06CloudWatch Alarms\u7ba1\u7406\u8d77\u6765\uff0c\u5e76\u4f7f\u7528for_each\u6765\u521b\u5efa\u7c7b\u4f3c\u7684CloudWatch Alarm\u65f6\uff0c\u51fa\u73b0\u4e86\u9519\u8bef\u3002<\/p>\n

\u5c0d\u65bcAPI Gateway + Lambda\u51fd\u6578\u7684REST API\u7d50\u69cb\uff0c\u6211\u5011\u8a66\u5716\u70ba\u6bcf\u500bLambda\u5275\u5efa\u4e00\u500bCloudWatch Alarm\u3002\u57fa\u672c\u4e0a\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u4e9b\u5177\u6709\u76f8\u540c\u6307\u6a19\u548c\u547d\u540d\u7a7a\u9593\u7684CloudWatch Alarm\uff0c\u53ea\u662f\u51fd\u6578\u540d\u7a31\u4e0d\u540c\u3002\u56e0\u6b64\uff0c\u6211\u5617\u8a66\u4f7f\u7528module\uff0bfor_each\u4f86\u7c21\u55ae\u5be6\u73fe\uff0c\u4f46\u537b\u9047\u5230\u4e86\u932f\u8aa4\u3002<\/p>\n

\u53e6\u5916\uff0c\u6211\u4eec\u5047\u8bbe\u8981\u76d1\u63a7\u7684Lambda\u51fd\u6570\u5177\u6709\u7279\u5b9a\u7684\u522b\u540d\uff0c\u4f8b\u5982\u53ea\u60f3\u76d1\u63a7\u751f\u4ea7\u73af\u5883\u4f7f\u7528\u7684Lambda\u51fd\u6570\u3002<\/p>\n

\u7531\u4e8e\u6211\u662f\u4e00\u4e2aTerraform\u521d\u5b66\u8005\uff0c\u5982\u679c\u6709\u4efb\u4f55\u9519\u8bef\u6216\u4e0d\u59a5\u4e4b\u5904\uff0c\u6211\u4f1a\u5f88\u611f\u6fc0\u60a8\u63d0\u4f9b\u8bc4\u8bba\u3002<\/p>\n

\u7ed3\u8bba<\/h1>\n

\u5982\u679cTerraform\u7684\u7248\u672c\u662f0.12\u7cfb\u5217\uff0c\u5219\u65e0\u6cd5\u5728\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u5bf9\u8d44\u6e90\u8fdb\u884c\u5b9a\u4e49\u3002\u800c\u5982\u679c\u7248\u672c\u662f0.13\u7cfb\u5217\uff0c\u5219\u53ef\u4ee5\u5b9e\u73b0\u8be5\u529f\u80fd\u3002\u4e0b\u9762\u662f\u53c2\u8003\u6587\u732e\u94fe\u63a5\uff1a
\nhttps:\/\/www.hashicorp.com\/blog\/hashicorp-terraform-0-12-preview-for-and-for-each#module-count-and-for_each<\/p>\n

\u6587\u4ef6\u7684\u7ed3\u6784 de<\/h1>\n

Terraform\u7684\u7248\u672c\u4e3a0.12.28\u3002<\/p>\n

><\/span> terraform --version<\/span>\r\nTerraform v0.12.28\r\n\r\nYour version of Terraform is out of date<\/span>!<\/span> The latest version\r\nis 0.13.4. You can update by downloading from https:\/\/www.terraform.io\/downloads.html\r\n<\/code><\/pre>\n
\u5728module\/cloudwatch_alarm\/lambda\/\u6587\u4ef6\u5939\u4e0b\uff0c\u521b\u5efamain.tf\u548cvariables.tf\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\u3002<\/p>\n
provider<\/span> \"aws\"<\/span> {<\/span>\r\n  region<\/span>                  =<\/span> \"ap-northeast-1\"<\/span>\r\n  shared_credentials_file<\/span> =<\/span> \"~\/.aws\/credentials\"<\/span>\r\n  profile<\/span>                 =<\/span> \"hogehoge\"<\/span>\r\n}<\/span>\r\n\r\nresource<\/span> \"aws_cloudwatch_metric_alarm\"<\/span> \"lambda_alarm\"<\/span> {<\/span>\r\n  alarm_name<\/span>                =<\/span> var<\/span>.<\/span>alarm_name<\/span>\r\n  comparison_operator<\/span>       =<\/span> var<\/span>.<\/span>comparison_operator<\/span>\r\n  evaluation_periods<\/span>        =<\/span> var<\/span>.<\/span>evaluation_periods<\/span>\r\n  metric_name<\/span>               =<\/span> var<\/span>.<\/span>metric_name<\/span>\r\n  namespace<\/span>                 =<\/span> var<\/span>.<\/span>namespace<\/span>  \r\n  period<\/span>                    =<\/span> var<\/span>.<\/span>period<\/span>\r\n  statistic<\/span>                 =<\/span> var<\/span>.<\/span>statistic<\/span>\r\n  threshold<\/span>                 =<\/span> var<\/span>.<\/span>threshold<\/span>\r\n  insufficient_data_actions<\/span> =<\/span> var<\/span>.<\/span>insufficient_data_actions<\/span>\r\n  alarm_actions<\/span>             =<\/span> var<\/span>.<\/span>alarm_actions<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
variable<\/span> \"alarm_name\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"The name of CloudWatch Alarm\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"comparison_operator\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"The operator to evaluate the metrics\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"evaluation_periods\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"1\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"The number of the most recent periods, or data points, to evaluate when determining alarm state\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"metric_name\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"metrics which you want to monitor\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"namespace\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"AWS\/Lambda\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"namespace which you want to monitor\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"period\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"300\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"The length of time to evaluate the metric or expression to create each individual data point for an alarm\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"statistic\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"statistic to evaluate a metrics\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"threshold\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"threshold to change the status of an alarm\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"alarm_description\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> \"\"<\/span>\r\n  type<\/span>        =<\/span> string<\/span>\r\n  description<\/span> =<\/span> \"the explanation of an alarm\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"insufficient_data_actions\"<\/span> {<\/span>\r\n  default<\/span> =<\/span> [<\/span>\"specify the actions when the data is not sufficient\"<\/span>]<\/span>\r\n  type<\/span>    =<\/span> list<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"dimensions\"<\/span> {<\/span>\r\n  default<\/span>     =<\/span> {}<\/span>\r\n  type<\/span>        =<\/span> map<\/span>(<\/span>string<\/span>)<\/span>\r\n  description<\/span> =<\/span> \"If you want to monitor specific resource in namespace, you can specify it\"<\/span>\r\n}<\/span>\r\n\r\nvariable<\/span> \"alarm_actions\"<\/span> {<\/span>\r\n  default<\/span> =<\/span> []<\/span>\r\n  type<\/span>    =<\/span> list<\/span>\r\n  description<\/span> =<\/span> \"Actions which are executed when the status of an alarm is changed\"<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7136\u540e\uff0c\u4f7f\u7528module\u521b\u5efaCloudWatch Alarms\u3002\u5728config.tf\u4e2d\u8bb0\u5f55alarm\u7684\u914d\u7f6e\uff0c\u5e76\u5728main.tf\u4e2d\u4f7f\u7528\u3002<\/p>\n
module<\/span> \"cloudwatch_for_lambda\"<\/span> {<\/span>\r\n  source<\/span> =<\/span> \".\/module\/cloudwatch_alarm\/lambda\"<\/span>\r\n\r\n  for_each<\/span>                  =<\/span> local<\/span>.<\/span>lambda_func_list<\/span>\r\n  alarm_name<\/span>                =<\/span> \"${each.key}-${local.alarm_settings[\"<\/span>metric<\/span>\"]}-alarm\"<\/span>\r\n  comparison_operator<\/span>       =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"comparison_operator\"<\/span>]<\/span>\r\n  evaluation_periods<\/span>        =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"evaluation_periods\"<\/span>]<\/span>\r\n  metric_name<\/span>               =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"metric\"<\/span>]<\/span>\r\n  namespace<\/span>                 =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"namespace\"<\/span>]<\/span>\r\n  period<\/span>                    =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"period\"<\/span>]<\/span>\r\n  statistic<\/span>                 =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"statistic\"<\/span>]<\/span>\r\n  threshold<\/span>                 =<\/span> local<\/span>.<\/span>alarm_settings<\/span>[<\/span>\"threshold\"<\/span>]<\/span>\r\n  alarm_description<\/span>         =<\/span> \"Detect errors from Lambda function ${each.key} \"<\/span>\r\n  insufficient_data_actions<\/span> =<\/span> []<\/span>\r\n  dimensions<\/span> =<\/span> {<\/span>\r\n    FunctionName<\/span> =<\/span> \"${each.key}\"<\/span>,<\/span>\r\n    Resource<\/span>     =<\/span> \"${each.key}:${each.value}\"<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
locals<\/span> {<\/span>\r\n  lambda_func_list<\/span> =<\/span> {<\/span>\r\n    func1<\/span> =<\/span> \"alias1\"<\/span>,<\/span>\r\n    func2<\/span> =<\/span> \"alias2\"<\/span>,<\/span>\r\n    func3<\/span> =<\/span> \"alias3\"<\/span>\r\n  }<\/span>\r\n\r\n  alarm_settings<\/span> =<\/span> {<\/span>\r\n    comparison_operator<\/span> =<\/span> \"GreaterThanThreshold\"<\/span>\r\n    evaluation_periods<\/span>  =<\/span> \"1\"<\/span>\r\n    metric<\/span>              =<\/span> \"Errors\"<\/span>\r\n    namespace<\/span>           =<\/span> \"AWS\/Lambda\"<\/span>\r\n    period<\/span>              =<\/span> \"300\"<\/span>\r\n    statistic<\/span>           =<\/span> \"Sum\"<\/span>\r\n    threshold<\/span>           =<\/span> \"0.0\"<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u73b0\u5728\u8fdb\u884cterraform init\u548cterraform plan\u3002<\/h1>\n
\u5c1d\u8bd5\u8fdb\u884cterraform init\u7684\u65f6\u5019\uff0c\u9047\u5230\u4e86\u4e00\u4e9b\u95ee\u9898\u3002\u3002\u3002<\/p>\n
\r\n><\/span> terraform init\r\nInitializing modules...\r\n- cloudwatch_for_lambda in <\/span>module\/cloudwatch_alarm\/lambda\r\n\r\nInitializing provider plugins...\r\n- Checking for <\/span>available provider plugins...\r\n- Downloading plugin for <\/span>provider \"aws\"<\/span> (<\/span>hashicorp\/aws)<\/span> 3.9.0...\r\n\r\nThe following providers do <\/span>not have any version constraints in <\/span>configuration,\r\nso the latest version was installed.\r\n\r\nTo prevent automatic upgrades to new major versions that may contain breaking\r\nchanges, it is recommended to add version =<\/span> \"...\"<\/span> constraints to the\r\ncorresponding provider blocks in <\/span>configuration, with the constraint strings\r\nsuggested below.\r\n\r\n*<\/span> provider.aws: version =<\/span> \"~> 3.9\"<\/span>\r\n\r\n\r\nWarning: Skipping backend initialization pending configuration upgrade\r\n\r\nThe root module configuration contains errors that may be fixed by running the\r\nconfiguration upgrade tool, so Terraform is skipping backend initialization.\r\nSee below for <\/span>more information.\r\n\r\n\r\nError: Reserved argument name in <\/span>module block\r\n\r\n  on main.tf line 4, in <\/span>module \"cloudwatch_for_lambda\"<\/span>:\r\n   4:   for_each                  =<\/span> local.lambda_func_list\r\n\r\nThe name \"for_each\"<\/span> is reserved for <\/span>use in <\/span>a future version of Terraform.\r\n\r\n\r\nTerraform has initialized, but configuration upgrades may be needed.\r\n\r\nTerraform found syntax errors in <\/span>the configuration that prevented full\r\ninitialization. If you've recently upgraded to Terraform v0.12, this may be\r\nbecause your configuration uses syntax constructs that are no longer valid,\r\nand so must be updated before full initialization is possible.\r\n\r\nTerraform has installed the required providers to support the configuration\r\nupgrade process. To begin upgrading your configuration, run the following:\r\n    terraform 0.12upgrade\r\n\r\nTo see the full set of errors that led to this message, run:\r\n    terraform validate\r\n<\/span><\/code><\/pre>\n
\u5728\u8c03\u67e5\u201cfor_each\u201d\u8fd9\u4e2a\u540d\u79f0\u662f\u4fdd\u7559\u7ed9\u672a\u6765\u7248\u672c\u7684\u4e00\u4e2aTerraform\u9519\u8bef\u65f6\uff0c\u6211\u627e\u5230\u4e86\u4ee5\u4e0b\u6587\u7ae0\u3002
\nhttps:\/\/www.hashicorp.com\/blog\/hashicorp-terraform-0-12-preview-for-and-for-each#module-count-and-for_each
\n\u4ee5\u4e0b\u662f\u4ece\u6587\u7ae0\u4e2d\u6458\u5f55\u7684\u5185\u5bb9\u3002<\/p>\n
\u6a21\u5757\u8ba1\u6570\u548cfor_each<\/p>\n
\u957f\u671f\u4ee5\u6765\uff0c\u7528\u6237\u4e00\u76f4\u5e0c\u671b\u5728\u6a21\u5757\u5757\u4e2d\u80fd\u591f\u4f7f\u7528count\u5143\u53c2\u6570\uff0c\u4ee5\u4fbf\u66f4\u8f7b\u677e\u5730\u521b\u5efa\u591a\u4e2a\u76f8\u540c\u6a21\u5757\u7684\u5b9e\u4f8b\u3002<\/p>\n
\u5728Terraform 0.12\u7684\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u4e00\u76f4\u5728\u4e3a\u6b64\u505a\u51c6\u5907\u5de5\u4f5c\uff0c\u5e76\u5728\u4ee5\u540e\u7684\u7248\u672c\u4e2d\u5b8c\u6210\u8fd9\u9879\u5de5\u4f5c\u3002\u9664\u4e86count\uff0c\u6a21\u5757\u5757\u8fd8\u4f1a\u63a5\u53d7\u4e0a\u9762\u8d44\u6e90\u4e2d\u63cf\u8ff0\u7684\u65b0\u7684for_each\u53c2\u6570\uff0c\u5e76\u83b7\u5f97\u7c7b\u4f3c\u7684\u7ed3\u679c\u3002<\/p>\n
\u7531\u4e8e\u8be5\u529f\u80fd\u5728Terraform\u73b0\u6709\u7684\u67b6\u6784\u4e2d\u5b9e\u65bd\u8d77\u6765\u7279\u522b\u590d\u6742\uff0c\u6240\u4ee5\u6211\u4eec\u80af\u5b9a\u9700\u8981\u8fdb\u884c\u66f4\u591a\u7684\u5de5\u4f5c\uff0c\u4ee5\u652f\u6301\u6b64\u529f\u80fd\u3002\u4e3a\u4e86\u907f\u514d\u4ee5\u540e\u7684\u7248\u672c\u4e2d\u7684\u8fdb\u4e00\u6b65\u7834\u574f\u6027\u53d8\u66f4\uff0c0.12\u7248\u672c\u5c06\u4fdd\u7559\u6a21\u5757\u7684\u8f93\u5165\u53d8\u91cf\u540d\u79f0count\u548cfor_each\uff0c\u4e3a\u6b64\u529f\u80fd\u7684\u5b8c\u6210\u505a\u597d\u51c6\u5907\u3002<\/p><\/blockquote>\n
\u770b\u8d77\u6765\u662f\u7248\u672c\u7684\u95ee\u9898\u30020.12.xx\u7248\u672c\u4f3c\u4e4e\u65e0\u6cd5\u5bf9\u6a21\u5757\u4f7f\u7528count\u548cfor_each\u51fd\u6570\u3002\u6211\u5c06\u5c1d\u8bd5\u5347\u7ea7\u81f30.13.1\u5e76\u518d\u6b21\u5c1d\u8bd5\u3002<\/p>\n
><\/span> tfenv list\r\n  0.13.1\r\n*<\/span> 0.12.28 (<\/span>set <\/span>by \/usr\/local\/Cellar\/tfenv\/2.0.0\/version)<\/span>\r\n\r\n><\/span> tfenv use 0.13.1\r\nSwitching default version to v0.13.1\r\nSwitching completed\r\n\r\n><\/span> terraform init\r\nInitializing modules...\r\nThere are some problems with the configuration, described below.\r\n\r\nThe Terraform configuration must be valid before initialization so that\r\nTerraform can determine which modules and providers need to be installed.\r\n\r\nError: Module does not support for_each\r\n\r\n  on main.tf line 4, in <\/span>module \"cloudwatch_for_lambda\"<\/span>:\r\n   4:   for_each                  =<\/span> local.lambda_func_list\r\n\r\nModule \"cloudwatch_for_lambda\"<\/span> cannot be used with for_each because it\r\ncontains a nested provider configuration for<\/span> \"aws\"<\/span>, at\r\nmodule\/cloudwatch_alarm\/lambda\/main.tf:1,10-15.\r\n\r\nThis module can be made compatible with for_each by changing it to receive all\r\nof its provider configurations from the calling module, by using the\r\n\"providers\"<\/span> argument in <\/span>the calling module block.\r\n<\/code><\/pre>\n
\u51fa\u73b0\u9519\u8bef\u3002\u770b\u8d77\u6765\u662f\u56e0\u4e3a\u5728\u6a21\u5757\u7684main.tf\u6587\u4ef6\u4e2d\u5305\u542b\u4e86\u63d0\u4f9b\u7a0b\u5e8f\u7684\u4fe1\u606f\u3002\u6211\u4eec\u9700\u8981\u5c06module\/cloudwatch_alarm\/lambda\/main.tf\u4e2d\u7684\u63d0\u4f9b\u7a0b\u5e8f\u90e8\u5206\u5206\u79bb\u5230provider.tf\u4e2d\uff0c\u50cf\u4e0b\u9762\u8fd9\u6837\u3002<\/p>\n
provider<\/span> \"aws\"<\/span> {<\/span>\r\n  region<\/span>                  =<\/span> \"ap-northeast-1\"<\/span>\r\n  shared_credentials_file<\/span> =<\/span> \"~\/.aws\/credentials\"<\/span>\r\n  profile<\/span>                 =<\/span> \"hogehoge\"<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
resource<\/span> \"aws_cloudwatch_metric_alarm\"<\/span> \"lambda_alarm\"<\/span> {<\/span>\r\n  alarm_name<\/span>                =<\/span> var<\/span>.<\/span>alarm_name<\/span>\r\n  comparison_operator<\/span>       =<\/span> var<\/span>.<\/span>comparison_operator<\/span>\r\n  evaluation_periods<\/span>        =<\/span> var<\/span>.<\/span>evaluation_periods<\/span>\r\n  metric_name<\/span>               =<\/span> var<\/span>.<\/span>metric_name<\/span>\r\n  namespace<\/span>                 =<\/span> var<\/span>.<\/span>namespace<\/span>  \r\n  period<\/span>                    =<\/span> var<\/span>.<\/span>period<\/span>\r\n  statistic<\/span>                 =<\/span> var<\/span>.<\/span>statistic<\/span>\r\n  threshold<\/span>                 =<\/span> var<\/span>.<\/span>threshold<\/span>\r\n  insufficient_data_actions<\/span> =<\/span> var<\/span>.<\/span>insufficient_data_actions<\/span>\r\n  alarm_actions<\/span>             =<\/span> var<\/span>.<\/span>alarm_actions<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u518d\u6b21\u6267\u884cterraform init\u3002<\/p>\n
><\/span> terraform init\r\nInitializing modules...\r\n\r\nInitializing the backend...\r\n\r\nInitializing provider plugins...\r\n- Finding latest version of hashicorp\/aws...\r\n- Installing hashicorp\/aws v3.9.0...\r\n- Installed hashicorp\/aws v3.9.0 (<\/span>signed by HashiCorp)<\/span>\r\n\r\nThe following providers do <\/span>not have any version constraints in <\/span>configuration,\r\nso the latest version was installed.\r\n\r\nTo prevent automatic upgrades to new major versions that may contain breaking\r\nchanges, we recommend adding version constraints in <\/span>a required_providers block\r\nin <\/span>your configuration, with the constraint strings suggested below.\r\n\r\n*<\/span> hashicorp\/aws: version =<\/span> \"~> 3.9.0\"<\/span>\r\n\r\nTerraform has been successfully initialized!\r\n\r\nYou may now begin working with Terraform. Try running \"terraform plan\"<\/span> to see\r\nany changes that are required for <\/span>your infrastructure. All Terraform commands\r\nshould now work.\r\n\r\nIf you ever set <\/span>or change modules or backend configuration for <\/span>Terraform,\r\nrerun this command <\/span>to reinitialize your working directory. If you forget, other\r\ncommands will detect it and remind you to do <\/span>so if <\/span>necessary.\r\n<\/code><\/pre>\n
\u6211\u4f1a\u6267\u884cterraform plan\u3002<\/p>\n
><\/span> terraform plan\r\nRefreshing Terraform state in<\/span>-memory<\/span> prior to plan...\r\nThe refreshed state will be used to calculate this plan, but will not be\r\npersisted to local <\/span>or remote state storage.\r\n\r\n\r\n------------------------------------------------------------------------<\/span>\r\n\r\nAn execution plan has been generated and is shown below.\r\nResource actions are indicated with the following symbols:\r\n  + create\r\n\r\nTerraform will perform the following actions:\r\n\r\n  # module.cloudwatch_for_lambda[\"func1\"].aws_cloudwatch_metric_alarm.lambda_alarm will be created<\/span>\r\n  + resource \"aws_cloudwatch_metric_alarm\"<\/span> \"lambda_alarm\"<\/span> {<\/span>\r\n      + actions_enabled                       =<\/span> true<\/span>\r\n      + alarm_name                            =<\/span> \"func1-Errors-alarm\"<\/span>\r\n      + arn                                   =<\/span> (<\/span>known after apply)<\/span>\r\n      + comparison_operator                   =<\/span> \"GreaterThanThreshold\"<\/span>\r\n      + evaluate_low_sample_count_percentiles =<\/span> (<\/span>known after apply)<\/span>\r\n      + evaluation_periods                    =<\/span> 1\r\n      + id<\/span>                                    =<\/span> (<\/span>known after apply)<\/span>\r\n      + metric_name                           =<\/span> \"Errors\"<\/span>\r\n      + namespace                             =<\/span> \"AWS\/Lambda\"<\/span>\r\n      + period                                =<\/span> 300\r\n      + statistic                             =<\/span> \"Sum\"<\/span>\r\n      + threshold                             =<\/span> 0\r\n      + treat_missing_data                    =<\/span> \"missing\"<\/span>\r\n    }<\/span>\r\n\r\n  # module.cloudwatch_for_lambda[\"func2\"].aws_cloudwatch_metric_alarm.lambda_alarm will be created<\/span>\r\n  + resource \"aws_cloudwatch_metric_alarm\"<\/span> \"lambda_alarm\"<\/span> {<\/span>\r\n      + actions_enabled                       =<\/span> true<\/span>\r\n      + alarm_name                            =<\/span> \"func2-Errors-alarm\"<\/span>\r\n      + arn                                   =<\/span> (<\/span>known after apply)<\/span>\r\n      + comparison_operator                   =<\/span> \"GreaterThanThreshold\"<\/span>\r\n      + evaluate_low_sample_count_percentiles =<\/span> (<\/span>known after apply)<\/span>\r\n      + evaluation_periods                    =<\/span> 1\r\n      + id<\/span>                                    =<\/span> (<\/span>known after apply)<\/span>\r\n      + metric_name                           =<\/span> \"Errors\"<\/span>\r\n      + namespace                             =<\/span> \"AWS\/Lambda\"<\/span>\r\n      + period                                =<\/span> 300\r\n      + statistic                             =<\/span> \"Sum\"<\/span>\r\n      + threshold                             =<\/span> 0\r\n      + treat_missing_data                    =<\/span> \"missing\"<\/span>\r\n    }<\/span>\r\n\r\n  # module.cloudwatch_for_lambda[\"func3\"].aws_cloudwatch_metric_alarm.lambda_alarm will be created<\/span>\r\n  + resource \"aws_cloudwatch_metric_alarm\"<\/span> \"lambda_alarm\"<\/span> {<\/span>\r\n      + actions_enabled                       =<\/span> true<\/span>\r\n      + alarm_name                            =<\/span> \"func3-Errors-alarm\"<\/span>\r\n      + arn                                   =<\/span> (<\/span>known after apply)<\/span>\r\n      + comparison_operator                   =<\/span> \"GreaterThanThreshold\"<\/span>\r\n      + evaluate_low_sample_count_percentiles =<\/span> (<\/span>known after apply)<\/span>\r\n      + evaluation_periods                    =<\/span> 1\r\n      + id<\/span>                                    =<\/span> (<\/span>known after apply)<\/span>\r\n      + metric_name                           =<\/span> \"Errors\"<\/span>\r\n      + namespace                             =<\/span> \"AWS\/Lambda\"<\/span>\r\n      + period                                =<\/span> 300\r\n      + statistic                             =<\/span> \"Sum\"<\/span>\r\n      + threshold                             =<\/span> 0\r\n      + treat_missing_data                    =<\/span> \"missing\"<\/span>\r\n    }<\/span>\r\n\r\nPlan: 3 to add, 0 to change, 0 to destroy.\r\n\r\n------------------------------------------------------------------------<\/span>\r\n\r\nNote: You didn't specify an \"-out\" parameter to save this plan, so Terraform\r\ncan'<\/span>t guarantee that exactly these actions will be performed if<\/span>\r\n\"terraform apply\"<\/span> is subsequently run.\r\n<\/code><\/pre>\n
\u770b\u8d77\u6765\u53ef\u4ee5\u521b\u5efa\u4e09\u4e2a\u540d\u5b57\u4e0d\u540c\u7684CloudWatch Alarm\uff0c\u6b63\u5982\u6240\u671f\u671b\u7684\u90a3\u6837\u3002<\/p>\n
\u603b\u7ed3<\/h1>\n
    \n
  • \n
      0.12\u7cfb\u306eterraform\u3092\u4f7f\u7528\u3057\u3066\u3044\u3066\u3001module\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u5bfe\u3057\u3066for_each\u3092\u4f7f\u304a\u3046\u3068\u3059\u308b\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u3088\u3046\u3067\u3059\u30020.13\u7cfb\u3060\u3068\u3046\u307e\u304f\u3044\u304d\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \u7121\u7406\u3084\u308amodule\u306e\u4e2d\u306b\u6301\u3063\u3066\u3044\u304f\u5fc5\u8981\u6027\u306f\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u305d\u308c\u306fterraform\u30d5\u30a1\u30a4\u30eb\u3092\u3069\u3046\u3084\u3063\u3066\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u306b\u3082\u3088\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/ul>\n","protected":false},"excerpt":{"rendered":"
        \u524d\u63d0 t\u00ed) \u5728\u516c\u53f8\u7684\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528Terraform\u6765\u7ba1\u7406\u8d44\u6e90\u3002\u4f46\u662f\uff0c\u5f53\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528Terraform […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-49147","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5f53\u6211\u5c1d\u8bd5\u5728Terraform\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u65f6\u9047\u5230\u4e86\u9519\u8bef - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5f53\u6211\u5c1d\u8bd5\u5728terraform\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u65f6\u9047\u5230\u4e86\u9519\u8bef\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f53\u6211\u5c1d\u8bd5\u5728Terraform\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u65f6\u9047\u5230\u4e86\u9519\u8bef\" \/>\n<meta property=\"og:description\" content=\"\u524d\u63d0 t\u00ed) \u5728\u516c\u53f8\u7684\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528Terraform\u6765\u7ba1\u7406\u8d44\u6e90\u3002\u4f46\u662f\uff0c\u5f53\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528Terraform […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5f53\u6211\u5c1d\u8bd5\u5728terraform\u6a21\u5757\u4e2d\u4f7f\u7528for_each\u65f6\u9047\u5230\u4e86\u9519\u8bef\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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