What is service discovery?

Question

Accepted Answer

**Service Discovery** — service discovery.

```yaml
# Kubernetes Service
apiVersion: v1
kind: Service
metadata:
  name: api-service
spec:
  selector:
    app: api
  ports:
    - port: 80
      targetPort: 3000
  type: ClusterIP
---
# DNS record: api-service.production.svc.cluster.local

# Another Pod can access:
# fetch("http://api-service:80")
```

```yaml
# Consul service discovery
services:
  - name: api
    port: 3000
    tags: [v1, production]
    meta:
      version: 1.0.0
```

**Tools:**
- Kubernetes DNS.
- Consul.
- etcd.
- CoreDNS.

DevOps: What is service discovery?