GitHub Action: kubernetes-environment

This repository wraps the environment information action, allowing it to be used as a replacement in support of various string functions and namespace standardization.

Introduction

We often find when deploying with various environments that we need to standardize the namespace names. This repository wraps the environment information action, allowing it to be used as a replacement in support of various string functions and namespace standardization.

With this action, you can use pipe functions to standardize the namespace names, for example, to lowercase, or to replace a dash with an underscore you can use | kebabcase or | toLower

Usage

To use this action, you'll want to create a workflow and argocd repository. This action is intended to replace cloudposse/github-action-yaml-config-query by wrapping it with helper actions.

With this action your config input can have several helper functions.

• reformat this replaces the namespace with a flavor of your choice. this is a key added to an environments configuration. See snipped below for example
  • branch-name will use the branch name as the namespace
  • pr-number will use the PR number as the namespace
• | functions: you can now perform simple string operations on keys in your environment configuration. This can help prevent dns invalid characters from becoming your namespace based on the branch name.
  • | kebabcase will convert the string to kebabcase (alternatively you can use | toKebab or | kebab)
  • | lowercase will convert the string to lowercase (alternatively you can use | toLower or | lower)
  • | uppercase will convert the string to uppercase (alternatively you can use | toUpper or | upper) Though this is perhaps less helpful as it is not valid in kubernetes nor dns.

- name: github-action-kubernetes-environment
  # We recommend pinning this action to a specific release or version range to ensure stability
  uses: cloudposse/github-action-kubernetes-environment@main
  id: result
  with:
    environment: ${{ inputs.environment }}
    namespace: ${{ inputs.namespace }}
    application: ${{ inputs.application }}
    config: |
      preview:
        cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-dev/apps
        cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
        namespace: ${{ inputs.namespace }}
        reformat: branch-name # reformats namespace to be branch name as kebabcase, alternatively use `pr-number` here for `pr-123` as your namespace
        ssm-path: platform/dev-cluster
      qa1:
        cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
        cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
        namespace: QA1/MY-APP | kebabcase
        # output namespace will become qa1-my-app
        ssm-path: platform/staging-cluster

• To get custom key value pairs you can query the selected environment with a follow up step:

- name: github-action-kubernetes-environment
uses: cloudposse/github-action-yaml-config-[email protected]
id: environment-info
with:
  query: .
  config: ${{ steps.result.outputs.environment-config }}

Full Workflow example:

name: github-action-kubernetes-environment
description: 'Get information about environment'
inputs:
  environment:
    description: "Environment name"
    required: true
  application:
    description: "The application name"
    required: false
  namespace:
    description: "Namespace name"
    required: true
outputs:
  name:
    description: "Environment name"
    value: ${{ inputs.environment }}
  region:
    description: "Default AWS Region"
    value: us-east-2
  role:
    description: "Environments that need to be deployed"
    value: ${{ steps.result.outputs.role }}
  cluster:
    description: "Environments that need to be destroyed"
    value: ${{ steps.result.outputs.cluster }}
  namespace:
    description: "Namespace"
    value: ${{ steps.result.outputs.namespace }}
  ssm-path:
    description: "Path to ssm secrets"
    value: ${{ steps.result.outputs.ssm-path }}

runs:
  using: "composite"
  steps:
    - name: github-action-kubernetes-environment
      # We recommend pinning this action to a specific release or version range to ensure stability
      uses: cloudposse/github-action-kubernetes-environment@main
      id: result
      with:
        environment: ${{ inputs.environment }}
        namespace: ${{ inputs.namespace }}
        application: ${{ inputs.application }}
        config: |
          preview:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-dev/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: ${{ inputs.namespace }}
            ssm-path: platform/dev-cluster
            reformat: branch-name
          qa1:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: qa1
            ssm-path: platform/staging-cluster
          qa2:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: qa2
            ssm-path: platform/staging-cluster
          qa3:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: qa3
            ssm-path: platform/staging-cluster
          qa4:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: qa4
            ssm-path: platform/staging-cluster
          
          production:
            cluster: https://github.com/athoteldev/argocd-deploy-prod/blob/main/plat/ue2-prod/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: production
            ssm-path: platform/prod-cluster
          
          staging:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-staging/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: staging
            ssm-path: platform/staging-cluster
          
          sandbox:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-sandbox/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: sandbox
            ssm-path: platform/sandbox-cluster

          dev:
            cluster: https://github.com/cloudposse/argocd-repo/blob/main/plat/ue2-dev/apps
            cluster-role: arn:aws:iam::123456789012:role/my-gha-cluster-role
            namespace: dev  
            ssm-path: platform/dev-cluster

Inputs

Name	Description	Default	Required
application	The application name	N/A	false
config	configuration	N/A	true
environment	Environment	N/A	true
namespace	Kubernetes namespace	N/A	true
namespace-deny-list	Kubernetes namespace deny list, generated names cannot contain this comma separated list.	kube-system,kube-public,default	false
namespace-prefix	Kubernetes namespace prefix		false
namespace-suffix	Kubernetes namespace suffix		false

Outputs

Name	Description
cluster	Environments that need to be destroyed
environment-config	Environment configuration
name	Environment name
namespace	Namespace
role	Environments that need to be deployed
ssm-path	Path to ssm secrets