# Harness Cd

> This skill should be used when the user asks to "deploy with Harness", "set up Harness CD", "conf…

This skill should be used when the user asks to "deploy with Harness", "set up Harness CD", "configure a canary/blue-green/rolling deployment", "add approval gates", or "roll back a deployment" — Kubernetes, Helm, Terraform, ECS, and serverless delivery via Harness.

- Page: https://ss33.ai/skills/thelobbi/harness-cd-73827406351
- Publisher: thelobbi
- Category: [Software Development](https://ss33.ai/skills/category/software-development-t44z8z) › [DevOps & cloud](https://ss33.ai/skills/category/software-development-t44z8z/devops-and-cloud-unkt50)
- License: MIT
- Source: https://github.com/thelobbi/claude/blob/fee8426275f05ae4f107863550140044649cf02e/plugins/delivery-orchestrator/skills/harness-cd/SKILL.md

## Skill

SKILL.md: https://ss33.ai/api/v1/ss33/download/thelobbi/harness-cd-73827406351

# Harness CD Skill

Deployment orchestration for Kubernetes, Helm, Terraform, ECS, serverless with GitOps.

## Use For
- CD pipelines, strategies (Canary/Blue-Green/Rolling), environments
- Approval gates, GitOps, rollback, multi-environment promotion

## Basic Deployment Pipeline

```yaml
pipeline:
  name: Deploy Pipeline
  stages:
    - stage:
        name: Deploy Dev
        type: Deployment
        spec:
          service:
            serviceRef: my_service
          environment:
            environmentRef: development
          execution:
            steps:
              - step:
                  name: Rolling Deploy
                  type: K8sRollingDeploy
                  timeout: 10m
            rollbackSteps:
              - step:
                  name: Rollback
                  type: K8sRollingRollback
```

## Deployment Strategies

### Rolling (gradual replacement)
```yaml
- step:
    type: K8sRollingDeploy
    spec:
      skipDryRun: false
```

### Canary (progressive traffic shift)
```yaml
- step:
    type: K8sCanaryDeploy
    spec:
      instanceSelection:
        type: Count
        spec:
          count: 1
```

### Blue-Green (zero-downtime cutover)
```yaml
- step:
    type: K8sBGStageDeployment
- step:
    type: K8sBGSwapServices
```

## Service Configuration

### Kubernetes
```yaml
serviceDefinition:
  type: Kubernetes
  spec:
    manifests:
      - manifest:
          type: K8sManifest
          spec:
            store:
              type: Git
              spec:
                connectorRef: github_connector
                branch: main
    artifacts:
      primary:
        sources:
          - type: DockerRegistry
            spec:
              imagePath: myorg/myapp
```

### Helm
```yaml
serviceDefinition:
  type: NativeHelm
  spec:
    chartName: my-app
    helmVersion: V3
```

### Terraform
```yaml
serviceDefinition:
  type: CustomDeployment
  spec:
    customDeploymentRef:
      templateRef: terraform_template
```

## Environment & Infrastructure

```yaml
environment:
  name: Production
  type: Production
infrastructureDefinition:
  type: KubernetesDirect
  spec:
    connectorRef: k8s_connector
    namespace: my-namespace
```

## Approval Gates

```yaml
- step:
    type: HarnessApproval
    spec:
      approvers:
        userGroups:
          - account.ProductionApprovers
# Jira: type: JiraApproval, issueKey: <+pipeline.variables.jiraIssueKey>
# ServiceNow: type: ServiceNowApproval, ticketNumber: <+pipeline.variables.changeRequest>
```

## GitOps Deployments

### Argo CD
```yaml
- step:
    type: GitOpsUpdateReleaseRepo
    spec:
      variables:
        - name: image_tag
          value: <+artifact.tag>
- step:
    type: GitOpsSync
    spec:
      prune: true
```

### PR-Based GitOps
```yaml
- step:
    type: CreatePR
    spec:
      updates:
        - path: environments/<+env.name>/values.yaml
          key: image.tag
          value: <+artifact.tag>
```

## Deployment Verification & Rollback

```yaml
- step:
    type: Verify
    spec:
      type: Canary
      sensitivity: MEDIUM
- step:
    type: Http
    spec:
      url: <+infra.variables.serviceUrl>/health
failureStrategies:
  - onFailure:
      errors:
        - AllErrors
      action:
        type: StageRollback
```

## Multi-Environment Promotion

```yaml
pipeline:
  stages:
    - stage:
        name: Deploy Dev
        spec:
          environment:
            environmentRef: development
    - stage:
        name: Deploy Staging
        spec:
          environment:
            environmentRef: staging
        when:
          condition: <+pipeline.stages.deploy_dev.status> == "SUCCEEDED"
    - stage:
        name: Deploy Production
        spec:
          environment:
            environmentRef: production
```

## Triggers

```yaml
# Artifact
trigger:
  source:
    type: Artifact
    spec:
      type: DockerRegistry
      imagePath: myorg/myapp
# Webhook
trigger:
  source:
    type: Webhook
    spec:
      type: Github
# Scheduled
trigger:
  source:
    type: Scheduled
    spec:
      expression: "0 2 * * *"
```

## CD Expressions

| Expression | Purpose |
|----------|---|
| <+service.name> | Service |
| <+env.name> | Environment |
| <+infra.namespace> | Namespace |
| <+artifact.image>:<+artifact.tag> | Image |
| <+pipeline.stages.X.output.VAR> | Output |

## API Operations

```bash
curl -X POST "https://app.harness.io/pipeline/api/pipeline/execute/${PIPELINE_ID}" -H "x-api-key: ${API_KEY}"
curl -X GET "https://app.harness.io/pipeline/api/pipelines/execution/v2/${EXECUTION_ID}" -H "x-api-key: ${API_KEY}"
curl -X PUT "https://app.harness.io/pipeline/api/pipelines/execution/interrupt/${EXECUTION_ID}" -H "x-api-key: ${API_KEY}"
```

## Common Issues

| Issue | Solution |
|-------|----------|
| Deployment timeout | Increase step timeout |
| Image pull failed | Verify connector credentials |
| Namespace not found | Check infrastructure definition |
| Manifest error | Validate YAML locally |
| Approval timeout | Review approval workflow |
| Rollback failed | Configure rollback steps |

## References

- [Harness CD Docs](https://developer.harness.io/docs/continuous-delivery)
- [Deployment Strategies](https://developer.harness.io/docs/continuous-delivery/manage-deployments/deployment-concepts)
- [GitOps](https://developer.harness.io/docs/continuous-delivery/gitops)