====== Monitoring ======

<WRAP round info>
**Target audience:** DevOps, SRE \\
**Content:** Metrics, dashboards, alerting \\
**Tools:** Prometheus, Grafana, Alertmanager
</WRAP>

Monitoring the Data Gateway for proactive error detection.

----

===== Workflow =====

<mermaid>
flowchart LR
    subgraph GATEWAY["DATA GATEWAY"]
        G1[/metrics Endpoint]
        G2[/health Endpoint]
    end

    subgraph COLLECT["COLLECTION"]
        P[Prometheus]
    end

    subgraph VISUAL["VISUALIZATION"]
        GR[Grafana]
    end

    subgraph ALERT["ALERTING"]
        AM[Alertmanager]
        E[E-Mail/Slack]
    end

    G1 --> P
    G2 --> P
    P --> GR
    P --> AM
    AM --> E

    style G1 fill:#e3f2fd
    style P fill:#fff3e0
    style GR fill:#e8f5e9
    style AM fill:#ffebee
</mermaid>

----

===== Runbooks =====

^  Runbook  ^  Description  ^  Duration  ^
| [[.:prometheus|Prometheus]] | Collect metrics, scrape config | ~15 min |
| [[.:grafana-dashboard|Grafana Dashboard]] | Visualization, pre-built dashboards | ~20 min |
| [[.:alerting|Alerting]] | Thresholds, notifications | ~15 min |

----

===== Important Metrics =====

| Metric | Description | Threshold |
|--------|-------------|-----------|
| ''http_requests_total'' | Number of HTTP requests | - |
| ''http_request_duration_seconds'' | Response time | < 1s |
| ''http_requests_in_progress'' | Active requests | < 100 |
| ''dotnet_gc_memory_total_available_bytes'' | Available memory | > 100MB |
| ''process_cpu_seconds_total'' | CPU usage | < 80% |

----

===== Quick Test =====

<code bash>
# Health Check
curl http://localhost:5000/health

# Metrics (when enabled)
curl http://localhost:5000/metrics
</code>

----

===== Related Runbooks =====

  * [[..:tagesgeschaeft:health-check|Health Check]] - Manual check
  * [[..:tagesgeschaeft:logs-pruefen|Check Logs]] - Error analysis
  * [[..:sicherheit:start|Security]] - TLS for metrics

----

<< [[..:start|<- Operator Handbook]] | [[.:prometheus|-> Prometheus]] >>

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//Wolfgang van der Stille @ EMSR DATA d.o.o. - Data Gateway Professional//

{{tag>operator monitoring prometheus grafana}}