amazon web services - AWS::CloudFormation::Init not executing commands in metadata -

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this template test command in metadata. can't figure out why command doesn't executed. it's supposed save string file in /tmp. machine ubuntu 16.04 cloud-init installed. in userdata install helper scripts , execute cfn-init.

thanks help.

{   "awstemplateformatversion": "2010-09-09",   "metadata": {     "aws::cloudformation::designer": {       "2af5b799-f6bf-7f20-a6eb-943274f18373": {         "size": {           "width": 60,           "height": 60         },         "position": {           "x": 326,           "y": 118         },         "z": 0,         "embeds": []       }     }   },   "resources": {     "ec2i3wadd": {       "type": "aws::ec2::instance",       "properties": {         "imageid": "ami-c60b90d1",         "keyname": "cf-key",         "instancetype": "t2.micro",         "userdata": {           "fn::base64": {             "fn::join": [               "",               [                 "#!/bin/bash -xe\n",                 "apt-get -y install python-setuptools\n",                 "mkdir aws-cfn-bootstrap-latest\n",                 "curl https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz | tar xz -c aws-cfn-bootstrap-latest --strip-components 1\n",                 "easy_install aws-cfn-bootstrap-latest\n",                 "/usr/local/bin/cfn-init --stack ",                 {                   "ref": "aws::stackname"                 },                 " --resource webserver",                 " --region ",                 {                   "ref": "aws::region"                 },                 "\n"               ]             ]           }         }       },       "metadata": {         "aws::cloudformation::designer": {           "id": "2af5b799-f6bf-7f20-a6eb-943274f18373"         },         "aws::cloudformation::init": {           "config": {             "commands": {               "test": {                 "command": "echo \"$magic\" > /tmp/test.txt",                 "env": {                   "magic": "i come environment!"                 }               }             }           }         }       }     }   } }

the issue being cause incorrect --resource argument being passed cfn-init command within userdata. argument should match logical resource name of resource containing metadata, in case ec2i3wadd.

"/usr/local/bin/cfn-init --stack ", { "ref": "aws::stackname" }, " --resource ec2i3wadd", " --region ", { "ref": "aws::region" }

https://docs.aws.amazon.com/awscloudformation/latest/userguide/cfn-init.html


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