Grafana Dashboards

Grafana Dashboards

Table of Contents

• Pre-configured Dashboards
• Creating Custom Dashboards
• Data Source Configuration
• Alert Setup
• Dashboard Sharing
• Panel Types
• Variables and Templating

Pre-configured Dashboards

Access: http://localhost:3001 Credentials: admin/admin

Available dashboards:

1. Container Overview: Resource usage across all containers
2. PostgreSQL Performance: Database metrics, connections, query rates
3. Redis Cluster: Cluster health, memory usage, commands/sec
4. RabbitMQ: Queue depths, message rates, consumers
5. Application Metrics: Request rates, latencies, errors

Creating Custom Dashboards

Create new dashboard:

1. Dashboards → New Dashboard
2. Add Panel → Add Query
3. Select data source: Prometheus
4. Enter PromQL query
5. Configure visualization
6. Save dashboard

Example panel:

{
  "title": "CPU Usage",
  "targets": [{
    "expr": "rate(container_cpu_usage_seconds_total[5m]) * 100"
  }],
  "type": "graph"
}

Data Source Configuration

Add Prometheus:

1. Configuration → Data Sources
2. Add data source → Prometheus
3. URL: http://prometheus:9090
4. Save & Test

Add Loki:

1. Add data source → Loki
2. URL: http://loki:3100
3. Save & Test

Alert Setup

Create alert:

1. Edit panel → Alert tab
2. Create Alert
3. Conditions: WHEN avg() OF query() IS ABOVE 80
4. Evaluate every: 1m
5. For: 5m
6. Notification: Select channel
7. Save

Notification channels:

1. Alerting → Notification channels
2. Add channel
3. Type: Email, Slack, etc.
4. Configure settings

Dashboard Sharing

Export dashboard:

1. Dashboard settings → JSON Model
2. Copy JSON
3. Save to file

Import dashboard:

1. Dashboards → Import
2. Upload JSON file or paste JSON
3. Select data source
4. Import

Share snapshot:

1. Share dashboard → Snapshot
2. Publish to snapshots.raintank.io
3. Share link

Panel Types

Graph: Time series data Stat: Single value Gauge: Value with min/max Table: Tabular data Heatmap: Distribution over time Logs: Log entries from Loki

Example configurations:

# Graph panel
targets:
  - expr: rate(http_requests_total[5m])
    legendFormat: "{{ method }}"

# Stat panel
targets:
  - expr: up{job="postgres"}
options:
  colorMode: background
  graphMode: none

# Table panel
targets:
  - expr: container_memory_usage_bytes
    format: table
transform:
  - id: organize
    options:
      excludeByName:
        - instance

Variables and Templating

Create variable:

1. Dashboard settings → Variables
2. Add variable
3. Name: container
4. Type: Query
5. Query: label_values(container_name)

Use in query:

container_memory_usage_bytes{name="$container"}

Multi-select variable:

container_memory_usage_bytes{name=~"$container"}

Related Pages

• Observability-Stack
• Prometheus-Queries
• Health-Monitoring