service-mesh-observability

1# Service Mesh Observability
2 
3Complete guide to observability patterns for Istio, Linkerd, and service mesh deployments.
4 
5## When to Use This Skill
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7- Setting up distributed tracing across services
8- Implementing service mesh metrics and dashboards
9- Debugging latency and error issues
10- Defining SLOs for service communication
11- Visualizing service dependencies
12- Troubleshooting mesh connectivity
13 
14## Core Concepts
15 
16### 1. Three Pillars of Observability
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18```
19┌─────────────────────────────────────────────────────┐
20│                  Observability                       │
21├─────────────────┬─────────────────┬─────────────────┤
22│     Metrics     │     Traces      │      Logs       │
23│                 │                 │                 │
24│ • Request rate  │ • Span context  │ • Access logs   │
25│ • Error rate    │ • Latency       │ • Error details │
26│ • Latency P50   │ • Dependencies  │ • Debug info    │
27│ • Saturation    │ • Bottlenecks   │ • Audit trail   │
28└─────────────────┴─────────────────┴─────────────────┘
29```
30 
31### 2. Golden Signals for Mesh
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33| Signal         | Description               | Alert Threshold   |
34| -------------- | ------------------------- | ----------------- |
35| **Latency**    | Request duration P50, P99 | P99 > 500ms       |
36| **Traffic**    | Requests per second       | Anomaly detection |
37| **Errors**     | 5xx error rate            | > 1%              |
38| **Saturation** | Resource utilization      | > 80%             |
39…