Using the Environment
Vela provides the ability to define environment variables scoped to individual steps, services and secrets. Additionally, if you need global environment variables you can set it at the parent and have it injected to all containers.
Please note the environment is designed to be unique per container. Vela does inject a variety of default values from build, repo and user information.
Defaults:
Usage
The following pipeline concepts are being used in the pipeline below:
Note:
Please be warned that ${variable} expressions are subject to pre-processing.
If you do not want the pre-processor to evaluate your expression it must be escaped.
version: "1"
+ environment:
+ GLOBAL_EXAMPLE: Hello, World Globally!
services:
- name: redis
+ environment:
+ LOCAL_EXAMPLE: Hello, World!
image: redis:latest
stages:
first_stage:
+ environment:
+ STAGE_EXAMPLE: "All the World's a Stage!"
steps:
- name: check status
image: redis:latest
+ environment:
+ LOCAL_EXAMPLE: Hello, World!
commands:
# you can use bash commands in-line to set or override variables
- export EXAMPLE="Hello World From Vela Team"
- echo ${EXAMPLE}
- echo ${STAGE_EXAMPLE}
- echo ${GLOBAL_EXAMPLE}
secrets:
- origin:
name: private vault
image: target/secret-vault:latest
+ environment:
+ EXAMPLE: Hello, World!
secrets: [ vault_token ]
parameters:
addr: vault.example.com
auth_method: token
username: octocat
items:
- source: secret/docker
path: docker
Global Usage
By default global injection affects all containers ran within the pipeline. However, if you only want some container types to receive the configuration you can limit which types get them by adding the environment declaration into the metadata.
Note:
Valid values for metadataenvironment: YAML key are steps, services and secrets.version: "1"
environment:
GLOBAL_EXAMPLE: Hello, World Globally!
+ metadata:
+ environment: [ steps, services ]
services:
# Global configuration is no longer available in services
- name: redis
environment:
LOCAL_EXAMPLE: Hello, World!
image: redis:latest
stages:
first_stage:
environment:
STAGE_EXAMPLE: "All the World's a Stage!"
steps:
- name: check status
image: redis:latest
environment:
LOCAL_EXAMPLE: Hello, World!
commands:
# you can use bash commands in-line to set or override variables
- export EXAMPLE="Hello World From Vela Team"
- echo ${EXAMPLE}
- echo ${STAGE_EXAMPLE}
- echo ${GLOBAL_EXAMPLE}
secrets:
+ # Global configuration is no longer available in secrets since "secrets"
+ # was removed as a value in the metadata.environment block.
- origin:
name: private vault
image: target/secret-vault:latest
environment:
EXAMPLE: Hello, World!
secrets: [ vault_token ]
parameters:
addr: vault.example.com
auth_method: token
username: octocat
items:
- source: secret/docker
path: docker