amazon-web-services - 使用 cloudformation 模板创建时，用户数据脚本未在 ubuntu 服务器中运行

Question

很抱歉问了重复的老问题。我的代码不运行 userdata shell 脚本。我的 userdata 属性是创建堆栈时给出的参数。我的代码是

{
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "AWS CloudFormation Sample Template",
"Parameters": {
    "UserData": {
        "Description": "User data",
        "Type": "String"
    }
},
"Resources": {
    "EC2Instance": {
        "Type": "AWS::EC2::Instance",
        "Properties": {
            "KeyName": {
                "Ref": "KeyName"
            },
            "InstanceType": {
                "Ref": "InstanceType"
            },
            "ImageId": {
                "Ref": "ImageId"
            },
            "SecurityGroups": [
                {
                    "Ref": "EC2SecurityGroup"
                }
            ],
            "UserData": {
                "Fn::Base64": {
                    "Fn::Join": [
                        "",
                        [
                            "#!/bin/bash",
                            "\n",
                            {
                                "Ref": "UserData"
                            }
                        ]
                    ]
                }
            }
        }
    }
}

}

我在 userdata 参数中给出了以下 shell 命令

"apt-get update","\n","apt-get install -y apache2","\n","apt-get install -y php","\n"

我不知道我的用户数据脚本是否正确，创建堆栈时没有显示任何错误，它成功创建了实例。创建实例后，我检查了实例中未安装 apache2 和 php 。谁能发现我的代码有什么问题吗？

Answer 1

尝试这个 UserData block 。 UserData 被重命名为 UData 以排除命名冲突。在这种情况下，UData 应该是“apt-get update; apt-get install -y apache2 php;”

"AWSTemplateFormatVersion": "2010-09-09",
"Description": "AWS CloudFormation Sample Template",
"Parameters": {
    "UData": {
        "Description": "User data",
        "Type": "String"
    }
},
"Resources": {
    "EC2Instance": {
        "Type": "AWS::EC2::Instance",
        "Properties": {
            "KeyName": {
                "Ref": "KeyName"
            },
            "InstanceType": {
                "Ref": "InstanceType"
            },
            "ImageId": {
                "Ref": "ImageId"
            },
            "SecurityGroups": [
                {
                    "Ref": "EC2SecurityGroup"
                }
            ],
            "UserData": {
                "Fn::Base64": {
                    "Fn::Join": [
                        "",
                        [
                            "#!/bin/bash\n",
                            "echo \">>>>>>>>>>>>> UPDATE <<<<<<<<<<<<<\"\n",
                            "export USR_DATA='", { "Ref": "UData" }, "'\n",
                            "echo $USR_DATA\n",
                            "echo $USR_DATA > user_data.sh\n",
                            "chmod +x user_data.sh\n",
                            "source user_data.sh\n",
                            "echo \">>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<\"\n"
                        ]
                    ]
                }
            }
        }
    }
}

用户数据也记录在/var/log/cloud-init-output.log 中该日志的输出确实有助于调试。