为托管自动化设置自定义应用程序

CertCentral 托管自动化支持常用的开箱即用的 web 服务器应用程序。

CertCentral 还允许使用“自定义应用程序”选项配置第三方 ACME 客户端，从而为其他不受本机支持的应用程序灵活地扩展证书管理。

要为自定义应用程序启用托管自动化，请执行以下步骤：

Step 1: Install DigiCert agent

Custom automations require an active DigiCert agent on the server. The agent:

Coordinates each automation request sent through Trust Lifecycle Manager, including details about the requested certificate type and properties.
Invokes your custom shell script on the server to complete the request and install the certificate for your application.

For detailed instructions about how to install and activate DigiCert agents on your servers, see Deploy and manage agents.

重要

To add and assign custom scripts, each agent must be running software version 3.1.2 or above.

设置第三方 ACME 客户端

In addition to a DigiCert agent, the server must have the Certbot ACME client installed.

Your custom shell script invokes Certbot to complete each request and install the resulting certificate for your custom Linux or Windows application.

For detailed instructions about how to download and install the Certbot client, refer to the official Certbot instructions.

Step 3: Create shell script

You need a shell script to help manage the certificates for your custom application.

The shell script contains the Certbot command to request and install certificates for your application via the Trust Lifecycle Manager ACME service. Below are example shell scripts for Linux and Windows.

Example scripts

例 1. Linux

# Define variables
host=$1
emailaddress=$2
eabkeyidentifier=$3
eabkeyhmac=$4
key=$5
directoryuri=$6

# Remove double quotes from ACME URL
value=$directoryuri
value=${value#\"}
directoryuri=${value%\"}

# Run Certbot
certbot certonly --server $directoryuri --config-dir ./acme/ --eab-kid $eabkeyidentifier --eab-hmac-key $eabkeyhmac --force-renew --agree-tos --no-redirect --expand -d $host --email $emailaddress --no-autorenew --preferred-challenges http --standalone --key-type $key -n --no-verify-ssl

# Complete script
returnCode=$?
echo "The command exit status : ${returnCode}"
exit $returnCode

例 2. Windows

directoryuri=%1
host=%2
emailaddress=%3
eabkeyidentifier=%5
eabkeyhmac=%6
acmeConfigDirectory="./%eabkeyidentifier%"
certbot --server %directoryuri% --config-dir %acmeConfigDirectory% --eab-kid %eabkeyidentifier%  --eab-hmac-key %eabkeyhmac% -m %emailaddress% --force-renew --agree-tos --no-redirect --expand -d %host% --no-verify-ssl --no-autorenew 
set returnCode=%errorlevel%
EXIT /B %returnCode%

Usage notes

Variable definitions at the top of these shell scripts set the required ACME request parameters:

These must match up with the ACME arguments you configure for the custom application in Trust Lifecycle Manager (see below).
During an automation event, values for these arguments are supplied to the shell script by the local DigiCert agent.

Commands used in the shell script:

Must include all mandatory parameters.
Must not exceed 512 characters.
Must not include special directives like rm -rf or rmdir

The shell script filename:

Must end with .sh or .bat.
Must not exceed 255 characters.

配置托管自动化设置

To add a custom automation script in Trust Lifecycle Manager:

In the Trust Lifecycle Manager menu, go to Discovery & automation tools > Scripts > DigiCert agents.
Open the Add script for dropdown on the top-right, and select DigiCert agents.
Complete the Add new script sidebar:
- Name: Enter a user-friendly name for referencing the script.
- Operating system: Select the applicable operating system (Linux or Windows).
- Script type: Select Custom automation.
- Upload script: Drag and drop or browse to select the script to upload. Once uploaded, the name of the script appears below the widget.
- Description: (Optional) Enter an optional description for the script to help identify it in Trust Lifecycle Manager.
- Command-line arguments: Enter a space-separated list of general ACME parameters to use with your custom automation script.
  例如：
  {acmeDirectoryUrl} {hosts} {email} {key} {extActKid} {extActHmac}
  请注意：
  - 每个参数必须完全按照此处所示输入。
  - 参数的顺序必须与它们在 shell 脚本中的使用方式相匹配。
  - 在自动化事件期间，系统将自动从选定的自动化配置文件中获取这些参数所需的值。
  CertCentral 托管自动化支持的 ACME 参数说明：
  - {acmeDirectoryUrl} - ACME 目录 URL 设置。
  - {hosts} - 证书主机详细信息。
  - {email} - 接收通知的电子邮件地址。
  - {key} - 密钥算法（RSA 或 ECC）。
  - {extActKid} - URL 中使用的外部帐户密钥标识符。
  - {extActHmac} - 用于为响应签名的 HMAC 密钥。
Select Add and verify script to verify the script in Trust Lifecycle Manager. Once verified, the script is available for assignment.

注意

For more information about how to add and manage agent scripts in Trust Lifecycle Manager, see Agent scripts.

Step 5: Assign script to the applicable agent IP/port targets

To complete the custom automation configuration, assign the script to any DigiCert agents that will manage certificates for the custom application:

From the Trust Lifecycle Manager menu, go to Discovery & automation tools > Agents.
Select the agent by name to view the details for it.
On the details page, select the pencil icon on the right to edit the agent configuration.
In the IP/port targets section for the agent, locate any IP/port targets where the custom application is running and configure them as follows:
- Application: Select Custom.
- Custom automation script: Select the custom automation script by the name assigned to it in Trust Lifecycle Manager.
Select the Update button at the bottom to save your changes.

What's next

After enabling managed automation for your custom application, you can manage certificate deployments for it as you would any other server application in Trust Lifecycle Manager.

When you need a new certificate for your custom application:

You submit the request through the Trust Lifecycle Manager web console or REST API.
The DigiCert agent on the local system processes the certificate request and invokes your custom shell script with the required parameters.
Your custom shell script invokes the Certbot ACME client to complete the request and install the new certificate for your application.

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