带打包程序的AWS user_data [英] AWS user_data with Packer

问题描述

因此，我尝试使用Packer创建一个AWS映像并通过user_data_file指定一些用户数据。该文件的内容需要在实例启动时运行，因为它每次都是唯一的。我无法将其烘焙到AMI中。

So I'm trying to use Packer to create an AWS image and specify some user data via user_data_file. The contents of this file needs to be run when the instance boots as it will be unique each time. I can't bake this into the AMI.

使用包装机我有以下内容：

Using packer I have the following:

{
  "variables": {
  "ami_name": ""
  },
  "builders": [
  {
    "type": "amazon-ebs",
    "region": "us-east-1",
    "source_ami": "ami-c8580bdf",
    "instance_type": "t2.micro",
    "ssh_username": "ubuntu",
    "ami_name": "{{ user `ami_name` }}-{{ isotime | clean_ami_name }}",
    "user_data_file": "user_data.sh",
    "tags": {
      "os_version": "ubuntu",
      "built_by": "packer",
      "build_on": "{{ isotime | clean_ami_name }}",
      "Name": "{{ user `ami_name` }}"
    }
  }],
  "provisioners": [
  {
    "type": "ansible",
    "playbook_file": "playbook.yml",
    "user": "ubuntu"
  }]
}

我的user_data shell脚本的内容只是通过运行于ansible脚本安装的软件包的一些基本配置行在供应者步骤。观看Packer的输出，我可以确认ansible脚本全部运行。

The contents of my user_data shell script are just a few basic config lines for a package that was installed via the ansible scripts that were run in the provisioners step. Watching the output of Packer I can confirm that the ansible scripts all run.

打包程序完成并创建了AMI，但是从未执行用户数据段。结果图像中不存在任何记录。没有/userdata.log文件，并且 /var/lib/cloud/instance/user-data.txt 为空，我觉得我缺少一些基本的东西，因为这应该是与Packer一起做非常简单的事情。

Packer completes and creates the AMI, but the user data piece is never executed. No record of it exists in resulting image. There is no /userdata.log file and /var/lib/cloud/instance/user-data.txt is empty I feel like I missing something basic as this should be a very simple thing to do with Packer.

推荐答案

正如Rickard von Essen指出的，答案是将我的脚本复制到 / var / lib / cloud / scripts / per-instance ，它将在从此AMI启动的每个实例上执行我的脚本。

As pointed out by Rickard von Essen the answer was to copy my script to /var/lib/cloud/scripts/per-instance which would execute my script on every instance launched from this AMI.

如果需要，您也可以将脚本放入 / var / lib / cloud / scripts / per-boot 每次实例启动时都会发生这种情况。

Alternately you can put your script in /var/lib/cloud/scripts/per-boot if you needed this to happen each time the instance boots.

在我的情况下，由于我想向第三方服务注册实例，因此每次创建实例时，它只能执行一次。

In my case since I wanted to register the instance with a 3rd party service I only had it execute once per instance creation.

这篇关于带打包程序的AWS user_data的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！