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EKSで始めるArgo Workflows(Artifact Repository)

2023/10/07に公開
Kubernetes
EKS
Argo Workflows
artifactrepository
tech

自己紹介

都内SaaS 企業でSRE エンジニア ２年目のFujihara Akitoです。
週一程度簡単なmemo書を残したいと思っています。

Argo Workflows の　Artifact Repository

Artifact Repository とは CI/CD ワークフローで生成される Artifact(ログ, パッケージ)などを外部に保管するRepositoryのことです。
Argo Workflow にもジョブ実行によって生成されるログや共有したいファイルを保管するためにArtifact Repository を設定することができます。
https://argoproj.github.io/argo-workflows/configure-artifact-repository/

EKS & S３ で実践

Argo Workflows を EKS　にデプロイ

https://zenn.dev/fujihara_akito/articles/argo-workflow-eks-1 を参考にデプロイ

S3の作成

Artifact を今回はS3に保管します。

resource "aws_s3_bucket" "artifact_repo_1" {
  bucket = "argowf-artifact-repo-1"
}

resource "aws_s3_bucket" "artifact_repo_2" {
  bucket = "argowf-artifact-repo-2"
}

irsa role の作成

Argo Workflows の Artifact Repository を S3 で行うためには kind: Workflow などのジョブ実行リソースだけではなく argo-workflows-server & argo-workflows-workflow-controller にもS3に対する権限を付与してあげる必要があります。

module "argowf_s3_access" {
  source = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
  version = "5.30.0"

  role_name = "argowf-s3-access"
  allow_self_assume_role = false

  oidc_providers = {
    main = {
      provider_arn = module.eks.oidc_provider_arn
      namespace_service_accounts = [
        "argo-workflows:argo-workflows-server",
        "argo-workflows:argo-workflows-workflow-controller",
      ]
    }
  }
  role_policy_arns = {
    s3_1 = aws_iam_policy.artifact_repo_1_access.arn,
    s3_2 = aws_iam_policy.artifact_repo_2_access.arn,
  }
}

module "artifact_repo_1_s3_access" {
  source = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
  version = "5.30.0"

  role_name = "s3-1-access"
  allow_self_assume_role = false

  oidc_providers = {
    main = {
      provider_arn = module.eks.oidc_provider_arn
      namespace_service_accounts = [
        "argo-workflows:artifact-repo-1-access",
      ]
    }
  }
  role_policy_arns = {
    s3_1 = aws_iam_policy.artifact_repo_1_access.arn,
  }
}

module "artifact_repo_2_s3_access" {
  source = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
  version = "5.30.0"

  role_name = "s3-2-access"
  allow_self_assume_role = false

  oidc_providers = {
    main = {
      provider_arn = module.eks.oidc_provider_arn
      namespace_service_accounts = [
        "argo-workflows:artifact-repo-2-access",
      ]
    }
  }
  role_policy_arns = {
    s3_1 = aws_iam_policy.artifact_repo_2_access.arn,
  }
}

ServiceAccount に IAM role　を annotation

helm の value file

controller:
・・・・
  serviceAccount:
    annotations:
      eks.amazonaws.com/role-arn: {{ requiredEnv "ARGOWF_IRSA_ROLE_ARN" | quote}}

・・・・

server:
・・・・
  serviceAccount:
    annotations:
      eks.amazonaws.com/role-arn: {{ requiredEnv "ARGOWF_IRSA_ROLE_ARN" | quote}}
・・・・

kind: Workflow & kind: WorkflowTemplate 用の ServiceAccount を作成 & annotation をしておく

Artifact Repository の設定を必要な kind: ConfigMap を作成

helm の value file

useStaticCredentials: false
artifactRepositoryRef:
  artifact-repositories:
    s3-1-access:
      archiveLogs: true
      s3:
        endpoint: s3.amazonaws.com
        bucket: "argowf-artifact-repo-1"
        insecure: false
        useSDKCreds: true
        encryptionOptions:
          enableEncryption: false
        keyFormat: "{{ `{{workflow.creationTimestamp.Y}}\
          /{{workflow.creationTimestamp.m}}\
          /{{workflow.creationTimestamp.d}}\
          /{{workflow.namespace}}\
          /{{workflow.name}}\
          /{{pod.name}}` }}"
    s3-2-access:
      archiveLogs: true
      s3:
        endpoint: s3.amazonaws.com
        bucket: "argowf-artifact-repo-2"
        insecure: false
        useSDKCreds: true
        encryptionOptions:
          enableEncryption: false
        keyFormat: "{{ `{{workflow.creationTimestamp.Y}}\
          /{{workflow.creationTimestamp.m}}\
          /{{workflow.creationTimestamp.d}}\
          /{{workflow.namespace}}\
          /{{workflow.name}}\
          /{{pod.name}}` }}"

実行するWorkflowにServiceAccount と artifactRepositoryRef　の設定

# S3(argowf-artifact-repo-1) を設定
apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: s3-1-artifact-wftemplate
spec:
  serviceAccountName: artifact-repo-1-access
  artifactRepositoryRef:
    configMap: artifact-repositories
    key: s3-1-access

・・・・

# S3(argowf-artifact-repo-2) を設定
apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: s3-2-artifact-wftemplate
spec:
  serviceAccountName: artifact-repo-2-access
  artifactRepositoryRef:
    configMap: artifact-repositories
    key: s3-2-access

・・・・

WorkflowTemplate を実行すると S3 に log が保管されていることが確認できると思います。

GitHubで編集を提案

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