python - 使用文件将环境变量加载到 Google Cloud Build

Question

我正在为 Cloud Build 设置环境变量(它们不必加密)。

env.sh

export GCP_PROJECT_ID=example
export GCP_KMS_KEYRING=example-secrets
export GCP_KMS_KEYNAME=example-identity
export GCP_KMS_ROLE=roles/cloudkms.cryptoKeyDecrypter
export GCP_KMS_KEY_ID=projects/$GCP_PROJECT_ID/locations/global/keyRings/$GCP_KMS_KEYRING/cryptoKeys/$GCP_KMS_KEYNAME

cloudbuild.yaml

steps:
# 1 Install Dependencies
- name: 'python'
  id: Pip install
  args: ['pip3', 'install', '-r', 'requirements.txt', '--user']
# 2 Set env variables for its execution
- name: 'ubuntu'
  args: ['bash', 'scripts/env.sh']
# 3 Run Tests
- name: 'python'
  args: ['python3', '-m', 'pytest', 'functions/test/']

运行步骤 2 无法正确设置这些。运行脚本时没有出现错误，但在稍后的测试中，当我尝试从 os.env 获取 GCP_KMS_KEY_ID 时，出现错误。我知道我可以在运行测试步骤下设置 env:，但我的项目需要从文件加载 env。

设置环境变量的最佳实践是什么？

Answer 1

您还可以为整个build设置环境变量和替换，而不仅仅是构建步骤。对于您的变量，我建议使用替换和环境变量的组合。

steps:
- name: 'python'
  entrypoint: 'bash'
  args:
  - '-c'
  - |
    # subs must being with _
    echo $_NAME
    echo $_GREETING
    # env vars called with double $
    echo $$MESSAGE
- name: 'ubuntu'
  args: ['bash', '-c', 'echo $$MESSAGE']

substitutions:
    _NAME: sam
    _GREETING: hello
options:
    env:
    - MESSAGE=$_GREETING, $_NAME!

从你的例子来看，它可以工作

substitutions:
    _GCP_PROJECT_ID: example
    _GCP_KMS_KEYRING: example-secrets
    _GCP_KMS_KEYNAME: example-identity
    _GCP_KMS_ROLE: roles/cloudkms.cryptoKeyDecrypter
options:
    env:
    - GCP_KMS_KEY_ID=projects/$_GCP_PROJECT_ID/locations/global/keyRings/$_GCP_KMS_KEYRING/cryptoKeys/$_GCP_KMS_KEYNAME