Harness EKS Deployments Skill
Deploy to AWS EKS via Harness CD with Native Helm, Kubernetes manifests, or GitOps.
Use For
- EKS deployment pipelines, deployment strategies (Rolling/Canary/Blue-Green)
- Native Helm deployments, GitOps with ArgoCD, multi-environment promotion
Deployment Types
Native Helm Deployment
service:
name: my-service
serviceDefinition:
type: NativeHelm
spec:
manifests:
- manifest:
identifier: helm_chart
type: HelmChart
spec:
store:
type: HarnessCode
spec:
repoName: my-app
branch: main
folderPath: charts/my-service
chartName: my-service
chartVersion: <+input>
helmVersion: V3
artifacts:
primary:
primaryArtifactRef: ecr_image
sources:
- identifier: ecr_image
type: Ecr
spec:
connectorRef: aws_connector
region: us-west-2
imagePath: my-service
tag: <+input>
Kubernetes Manifest Deployment
service:
name: my-service
serviceDefinition:
type: Kubernetes
spec:
manifests:
- manifest:
identifier: k8s_manifests
type: K8sManifest
spec:
store:
type: HarnessCode
spec:
repoName: my-app
branch: main
paths:
- k8s/base
- k8s/overlays/<+env.name>
Deployment Strategies
Rolling (Zero-Downtime Default)
execution:
steps:
- step:
type: K8sRollingDeploy
name: Rolling Deploy
identifier: rolling_deploy
spec:
skipDryRun: false
timeout: 10m
rollbackSteps:
- step:
type: K8sRollingRollback
name: Rollback
identifier: rollback
Canary (Progressive Traffic Shift)
execution:
steps:
- step:
type: K8sCanaryDeploy
name: Canary 10%
identifier: canary_10
spec:
instanceSelection:
type: Percentage
spec:
percentage: 10
- step:
type: HarnessApproval
name: Approve Canary
spec:
approvers:
userGroups:
- account.DevOpsTeam
- step:
type: K8sCanaryDeploy
name: Canary 50%
identifier: canary_50
spec:
instanceSelection:
type: Percentage
spec:
percentage: 50
- step:
type: K8sCanaryDeploy
name: Full Rollout
identifier: full_rollout
spec:
instanceSelection:
type: Percentage
spec:
percentage: 100
rollbackSteps:
- step:
type: K8sCanaryDelete
name: Canary Delete
identifier: canary_delete
Blue-Green (Instant Cutover)
execution:
steps:
- step:
type: K8sBGStageDeployment
name: Stage Deployment
identifier: stage_deployment
- step:
type: HarnessApproval
name: Approve Switch
spec:
approvers:
userGroups:
- account.ProductionApprovers
- step:
type: K8sBGSwapServices
name: Swap Services
identifier: swap_services
rollbackSteps:
- step:
type: K8sBGSwapServices
name: Rollback Swap
identifier: rollback_swap
EKS Infrastructure Definition
infrastructureDefinition:
name: EKS Production
identifier: eks_production
type: KubernetesDirect
spec:
connectorRef: eks_connector
namespace: <+service.name>-<+env.name>
releaseName: <+service.name>
allowSimultaneousDeployments: false
AWS EKS Connector
connector:
name: EKS Production
identifier: eks_production
type: K8sCluster
spec:
credential:
type: InheritFromDelegate
delegateSelectors:
- eks-delegate
Environment Configuration
Development
environment:
name: Development
identifier: development
type: PreProduction
overrides:
manifests:
- manifest:
identifier: values_override
type: Values
spec:
store:
type: HarnessCode
spec:
repoName: my-app
branch: main
paths:
- charts/my-service/values-dev.yaml
Production
environment:
name: Production
identifier: production
type: Production
overrides:
manifests:
- manifest:
identifier: values_override
type: Values
spec:
store:
type: HarnessCode
spec:
repoName: my-app
branch: main
paths:
- charts/my-service/values-prod.yaml
Verification & Health Checks
- step:
type: Verify
name: Deployment Verification
spec:
type: Canary
monitoredService:
type: Default
spec:
sensitivity: MEDIUM
duration: 5m
- step:
type: Http
name: Health Check
spec:
url: http://<+service.name>.<+infra.namespace>.svc.cluster.local/health
method: GET
assertion: <+httpResponseCode> == 200
Multi-Environment Promotion Pipeline
pipeline:
name: EKS Promotion Pipeline
stages:
- stage:
name: Deploy Dev
type: Deployment
spec:
deploymentType: NativeHelm
environment:
environmentRef: development
execution:
steps:
- step:
type: HelmDeploy
name: Helm Deploy
- stage:
name: Deploy Staging
type: Deployment
spec:
environment:
environmentRef: staging
when:
pipelineStatus: Success
- stage:
name: Deploy Production
type: Deployment
spec:
environment:
environmentRef: production
when:
pipelineStatus: Success
condition: <+pipeline.stages.deploy_staging.status> == "SUCCEEDED"
Common Expressions
| Expression | Purpose |
|------------|---------|
| <+service.name> | Service name |
| <+env.name> | Environment name |
| <+env.type> | Environment type (Production/PreProduction) |
| <+infra.namespace> | Kubernetes namespace |
| <+infra.releaseName> | Helm release name |
| <+artifact.image> | Full image path |
| <+artifact.tag> | Image tag |
| <+pipeline.executionId> | Pipeline execution ID |
Troubleshooting
| Issue | Solution | |-------|----------| | Helm release failed | Check values file syntax, verify chart dependencies | | Pod stuck in Pending | Check node resources, PVC availability | | Image pull error | Verify ECR connector, check image exists | | Namespace not found | Ensure namespace exists or set createNamespace: true | | Rollback failed | Check rollback steps, verify previous release exists | | Verification failed | Adjust sensitivity, extend duration |