---
description: |
    The `jdcloud` Packer builder helps you to build instance images
    based on an existing image
layout: docs
page_title: 'JDCloud Image Builder'
sidebar_current: 'docs-builders-jdcloud'
---

# JDCloud Image Builder

Type: `jdcloud`

The `jdcloud` Packer builder helps you to build instance images
based on an existing image

## Configuration Reference

In order to build a JDCloud instance image, full-fill your configuration file. Necessary attributes
are given below: 

### Required-Parameters:

- `type` (string) - This parameter tells which cloud-service-provider you are using, in our case, use 'jdcloud'
- `image_id` (string) - New image is generated based on an old one, specify the base-image-id here. 
- `access_key` (string) - Your JD Cloud access key. You may set this as an env-variable:`export JDCLOUD_ACCESS_KEY=xxx`
- `secret_key` (string) - Your JD Cloud secret key. You may also set this via env-variable:`export JDCLOUD_SECRET_KEY=xxx`
- `region_id` (string) - Region of your instance, candidates are {"cn-north-1","cn-south-1","cn-east-1","cn-east-2"}
- `az` (string) - Exact availability zone of instance, 'cn-north-1c' for example
- `instance_name` (string) - Name your instance
- `instance_type` (string) - Class of your expected instance
- `image_name` (string) - Name the image you would like to create
- `communicator` (string) - Currently only `ssh` is supported. `winrm` will be added if required

### Optional-Parameters

- `subnet_id` (string) - An instance is supposed to exists in an subnet, if not specified , we will create new one for you


## Examples

Here is a basic example for JDCloud.

```json
{
  "builders": [
    {
      "type": "jdcloud",
      "image_id": "img-h8ly274zg9",
      "access_key": "<your access key>",
      "secret_key": "<your secret key>",
      "region_id": "cn-north-1",
      "az": "cn-north-1c",
      "instance_name": "created_by_packer",
      "instance_type": "g.n2.medium",
      "ssh_password":"/Users/mac/.ssh/id_rsa",
      "ssh_keypair_name":"created_by_xiaohan",
      "image_name": "packerImage",
      "subnet_id": "subnet-jo6e38sdli",
      "communicator":"ssh",
      "ssh_username": "root",
    }
  ],

  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "sleep 3",
        "echo 123",
        "pwd"
      ]
    }
  ]
}


```

[Find more examples](https://github.com/hashicorp/packer/tree/master/examples/jdcloud)
