kubernetes-patterns
Pods, deployments, services, ingress, RBAC, autoscaling, and production cluster best practices
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- cosmicstack-labs/mercury-agent-skills
- Última atividade na origem
- 10 de maio de 2026 às 06:29
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- inglês
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- kubernetes-patterns
- description
- Pods, deployments, services, ingress, RBAC, autoscaling, and production cluster best practices
- metadata
- {"author":"cosmicstack-labs","version":"1.0.0","category":"devops","tags":["kubernetes","k8s","devops","containers","orchestration"]}
# Kubernetes Patterns
Deploy and manage production Kubernetes clusters.
## Core Objects
### Workloads
| Object | Use Case | Scaling |
|--------|----------|---------|
| Deployment | Stateless apps | Replicas, HPA |
| StatefulSet | Stateful apps (DBs) | Stable network IDs |
| DaemonSet | Per-node agents (logging, monitoring) | Node count |
| Job/CronJob | Batch tasks, scheduled jobs | Completion |
### Networking
- **Service**: Stable endpoint for pods (ClusterIP, NodePort, LoadBalancer)
- **Ingress**: HTTP routing, TLS termination, path-based routing
- **Network Policies**: Pod-level firewall rules
## Production Best Practices
### Resource Management
```yaml
resources:
requests:
cpu: 100m
memory: 128Mi
limits:
cpu: 500m
memory: 256Mi
```
- Always set requests AND limits
- Use LimitRange for namespace defaults
- Use ResourceQuota for namespace caps
### Pod Anti-Affinity
Spread pods across nodes for HA.
### Readiness & Liveness Probes
- Readiness: traffic starts flowing
- Liveness: pod gets restarted
- Startup: for slow-starting containers
## RBAC
- Least-privilege service accounts per app
- Namespace-scoped roles (not cluster-wide)
- Regularly audit permissions
- Use groups, not individual users
## Autoscaling
- HPA: scale by CPU/memory or custom metrics
- VPA: adjust resource requests automatically
- Cluster Autoscaler: add/remove nodes
- KEDA: event-driven scaling (SQS queue depth, etc.)
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