Estoy intentando iniciar una instancia con la plantilla CloudFormation. La instancia se inició pero la sección UserData no se ejecutó completamente porquecfn-init/aws-cfn-bootstrap El paquete no se instaló en Redhat 7 AMI. Intenté instalaraws-cfn-bootstrap paquete manualmente pero no se pudo instalar debido a los conflictos con la versión de Python.

Aquí está la sección UserData de la plantilla CloudFormation

"UserData": {
                "Fn::Base64": {
                    "Fn::Join": [
                        "\n",
                        [
                            "#!/bin/bash",
                            "set -x",
                            "",
                            "INSTANCE_ID=`/opt/aws/bin/ec2-metadata --instance-id | cut -f2 -d' '`",
                            "REGION=`/opt/aws/bin/ec2-metadata --availability-zone| cut -f2 -d' ' | sed '$s/.$//'`",
                            {
                                "Fn::Join": [
                                    "",
                                    [
                                        "AID='",
                                        {
                                            "Fn::GetAtt": [
                                                "eip",
                                                "AllocationId"
                                            ]
                                        },
                                        "'"
                                    ]
                                ]
                            },
                            "aws ec2 associate-address --region $REGION --instance-id $INSTANCE_ID --allocation-id $AID"
                        ]
                    ]
                }
            }

cloud-init.log

Nov 12 03:55:27 localhost cloud-init: Cloud-init v. 0.7.6 running 'modules:config' at Thu, 12 Nov 2015 08:55:27 +0000. Up 19.01 seconds. 
Nov 12 03:55:28 localhost cloud-init: Cloud-init v. 0.7.6 running 'modules:final' at Thu, 12 Nov 2015 08:55:27 +0000. Up 19.67 seconds. 
Nov 12 03:55:28 localhost cloud-init: ++ /opt/aws/bin/ec2-metadata --instance-id 
Nov 12 03:55:28 localhost cloud-init: /var/lib/cloud/instance/scripts/part-001: line 4: /opt/aws/bin/ec2-metadata: No such file or directory 
Nov 12 03:55:28 localhost cloud-init: ++ cut -f2 '-d ' 
Nov 12 03:55:28 localhost cloud-init: + INSTANCE_ID= 
Nov 12 03:55:28 localhost cloud-init: ++ cut -f2 '-d ' 
Nov 12 03:55:28 localhost cloud-init: ++ sed '$s/.$//' 
Nov 12 03:55:28 localhost cloud-init: ++ /opt/aws/bin/ec2-metadata --availability-zone 
Nov 12 03:55:28 localhost cloud-init: /var/lib/cloud/instance/scripts/part-001: line 5: /opt/aws/bin/ec2-metadata: No such file or directory 
Nov 12 03:55:28 localhost cloud-init: + REGION= 
Nov 12 03:55:28 localhost cloud-init: + AID=eipalloc-XXXXXX 
Nov 12 03:55:28 localhost cloud-init: + aws ec2 associate-address --region --instance-id --allocation-id eipalloc-XXXXXX 
Nov 12 03:55:28 localhost cloud-init: /var/lib/cloud/instance/scripts/part-001: line 7: aws: command not found 
Nov 12 03:55:28 localhost cloud-init: 2015-11-12 03:55:28,078 - util.py[WARNING]: Failed running /var/lib/cloud/instance/scripts/part-001 [127] 
Nov 12 03:55:28 localhost cloud-init: 2015-11-12 03:55:28,089 - cc_scripts_user.py[WARNING]: Failed to run module scripts-user (scripts in /var/lib/cloud/instance/scripts) 
Nov 12 03:55:28 localhost cloud-init: 2015-11-12 03:55:28,089 - util.py[WARNING]: Running module scripts-user (<module 'cloudinit.config.cc_scripts_user' from '/usr/lib/pyt
hon2.7/site-packages/cloudinit/config/cc_scripts_user.pyc'>) failed