markus41/harness-platform

Harness Platform Administration Skill

Comprehensive Harness Platform administration for delegates, RBAC, connectors, secrets, templates, OPA policies, and governance.

Platform Hierarchy

Account (Root)
├── Organization
│   ├── Project
│   │   ├── Pipelines, Services, Environments
│   │   ├── Connectors (project-level)
│   │   └── Secrets (project-level)
│   ├── Connectors (org-level)
│   └── Secrets (org-level)
├── Delegates
├── Secrets (account-level)
└── User Management

Harness Delegates

Types: Kubernetes (Helm, YAML), Docker, Shell, ECS

Kubernetes Helm Install:

helm repo add harness-delegate https://app.harness.io/storage/harness-download/delegate-helm-chart/
helm install harness-delegate harness-delegate/harness-delegate-ng \
  --namespace harness-delegate --create-namespace \
  --set accountId="${HARNESS_ACCOUNT_ID}" \
  --set delegateToken="${DELEGATE_TOKEN}" \
  --set delegateName="prod-delegate" \
  --set replicas=2

Delegate Selectors: Route tasks to specific delegates with labels (e.g., production, aws, k8s)

Troubleshooting:

kubectl get pods -n harness-delegate
kubectl logs -n harness-delegate -l app=harness-delegate --tail=100
kubectl exec deployment/harness-delegate -n harness-delegate -- curl -s localhost:8080/api/health

RBAC (Role-Based Access Control)

Built-in Roles:

• Account Admin (full access)
• Account Viewer (read-only)
• Organization Admin (org-level)
• Project Admin (project-level)
• Pipeline Executor (execute only)
• Pipeline Viewer (view only)

Resource Types: PIPELINE, SERVICE, ENVIRONMENT, CONNECTOR, SECRET, INFRASTRUCTURE

Custom Role Example:

role:
  name: Deployment Manager
  permissions:
    - resourceType: PIPELINE
      actions: [core_pipeline_view, core_pipeline_execute]
    - resourceType: SERVICE
      actions: [core_service_view, core_service_access]
    - resourceType: ENVIRONMENT
      actions: [core_environment_view, core_environment_access]

User Groups & Role Binding:

• Create groups by team/function
• Bind roles to groups with resource groups
• Support SAML/SSO integration
• Service accounts for automation with API keys (90-day default expiry)

Connectors

Cloud Connectors:

• AWS: ManualConfig (access/secret key) or IRSA (recommended for EKS)
• GCP: Service account key
• Azure: App ID, Tenant ID, Client Secret

Kubernetes:

• Manual: Master URL + Service Account token
• In-cluster: InheritFromDelegate (simplest)

Container Registries: Docker Hub, ECR, GCR, ACR

Test Connector:

curl -X POST "https://app.harness.io/gateway/ng/api/connectors/testConnection/${CONNECTOR_ID}" \
  -H "x-api-key: ${HARNESS_API_KEY}" \
  -d '{"accountIdentifier":"...", "orgIdentifier":"...", "projectIdentifier":"..."}'

Secrets Management

Secret Managers: Harness Built-in (Google KMS), HashiCorp Vault, AWS Secrets Manager, GCP Secret Manager, Azure Key Vault

Vault Connector:

connector:
  type: Vault
  spec:
    vaultUrl: https://vault.company.com
    basePath: harness
    authToken: <+secrets.getValue("vault_root_token")>
    renewalIntervalMinutes: 60
    secretEngineVersion: 2

Secret References:

• Harness: <+secrets.getValue("my_secret")>
• Vault: <+secrets.getValue("vault://secret/data/myapp#api_key")>
• AWS SM: <+secrets.getValue("awsSecretsManager://prod/database")>

Templates

Types: Step, Stage, Pipeline, StepGroup (reusable across pipelines)

Step Template Example:

template:
  name: Notify Slack
  type: Step
  spec:
    type: ShellScript
    spec:
      shell: Bash
      script: |
        curl -X POST $SLACK_WEBHOOK \
          -H 'Content-Type: application/json' \
          -d '{"text":"<+input>"}'

Using Templates in Pipeline:

template:
  templateRef: standard_k8s_deploy
  versionLabel: "1.0.0"
  templateInputs:
    spec:
      service:
        serviceRef: my_service
      environment:
        environmentRef: production

Policy as Code (OPA)

Policy Structure (Rego):

package pipeline

# Deny production deploys without approval
deny[msg] {
    some stage in input.pipeline.stages
    stage.stage.spec.environment.environmentRef == "production"
    not has_approval_step(input.pipeline)
    msg := "Production requires approval step"
}

# Require delegate selectors
deny[msg] {
    some stage in input.pipeline.stages
    stage.stage.spec.environment.environmentRef == "production"
    not stage.stage.spec.infrastructure.spec.delegateSelectors
    msg := "Production must specify delegate selectors"
}

Policy Set Configuration:

policySet:
  name: Production Governance
  policySetType: Pipeline
  policies:
    - policyRef: require_approval
      severity: error
    - policyRef: require_delegate_selectors
      severity: error
  entitySelector:
    - type: PIPELINE
      filter:
        - key: projectIdentifier
          value: production_project

Evaluation Points: On Save, On Run

Audit Logs

Query Logs:

curl -X POST "https://app.harness.io/gateway/ng/api/audits/list" \
  -H "x-api-key: ${HARNESS_API_KEY}" \
  -d '{"accountIdentifier":"...", "pageIndex":0, "pageSize":20}'

Event Types: CREATE, UPDATE, DELETE, LOGIN, PIPELINE_START, PIPELINE_END

API Reference

Authentication:

# API Key
curl -H "x-api-key: ${HARNESS_API_KEY}"

# Bearer Token
curl -H "Authorization: Bearer ${TOKEN}"

Common Endpoints:

• Users: GET /ng/api/user/users
• User Groups: GET /ng/api/user-groups
• Roles: GET /ng/api/roles
• Resource Groups: GET /ng/api/resourcegroup
• Connectors: GET /ng/api/connectors
• Secrets: GET /ng/api/v2/secrets
• Delegates: GET /ng/api/delegate-token-ng
• Templates: GET /template/api/templates
• Audit Logs: POST /ng/api/audits/list

Create Project:

curl -X POST "https://app.harness.io/gateway/ng/api/projects" \
  -H "x-api-key: ${HARNESS_API_KEY}" \
  -d '{"project":{"name":"My Project","identifier":"my_project","orgIdentifier":"default"}}'

Best Practices

Delegate Management:

1. Deploy 2+ replicas for HA
2. Resource sizing: 2GB RAM, 0.5 CPU minimum
3. Use meaningful tags for routing
4. Enable auto-upgrade
5. Monitor and export metrics

Security:

1. Least privilege RBAC
2. Use external secret managers with rotation
3. Service accounts for automation
4. Regular audit log review
5. OPA for governance enforcement

Organization:

1. Logical org/project hierarchy
2. Consistent naming conventions
3. Reuse templates across projects
4. Document all resources

Related Documentation

• Harness Docs
• Delegate Guide
• RBAC Guide
• Connectors
• Secrets
• Templates
• Governance