Alexander Abakumov
15e744da49
- Added comprehensive course structure with 11 modules - Included theoretical content, practical examples, and tasks - Multi-language code examples (Java, Rust, Node.js, Python) - Detailed analysis of architectural approaches and trade-offs - Complete caching strategies documentation - Architecture examples from real-world systems (Twitter, Netflix, Uber) - Structured navigation and learning path - Ready for educational use
77 lines
1.9 KiB
Markdown
77 lines
1.9 KiB
Markdown
# Alerting
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## Навигация
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- [🏠 Главная страница курса](../../../README.md)
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- [📚 Модуль 5](../README.md)
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---
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## Принципы алертинга
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### 1. Alert Fatigue Prevention
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- Только важные алерты
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- Группировка похожих алертов
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- Эскалация по времени
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### 2. Alert Classification
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- **Critical** — система недоступна
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- **Warning** — деградация производительности
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- **Info** — информационные уведомления
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## Правила оповещений Prometheus
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```yaml
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# alerts.yml
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groups:
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- name: application
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rules:
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- alert: HighErrorRate
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expr: rate(http_requests_total{status=~"5.."}[5m]) / rate(http_requests_total[5m]) > 0.05
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for: 2m
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labels:
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severity: critical
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annotations:
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summary: "High error rate detected"
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description: "Error rate is {{ $value }} for {{ $labels.instance }}"
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- alert: HighResponseTime
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expr: histogram_quantile(0.95, rate(http_request_duration_seconds_bucket[5m])) > 1
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: "High response time"
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description: "95th percentile response time is {{ $value }}s"
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```
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## Конфигурация Alertmanager
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```yaml
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# alertmanager.yml
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global:
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smtp_smarthost: 'localhost:587'
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smtp_from: 'alerts@example.com'
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route:
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group_by: ['alertname']
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group_wait: 10s
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group_interval: 10s
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repeat_interval: 1h
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receiver: 'web.hook'
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receivers:
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- name: 'web.hook'
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webhook_configs:
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- url: 'http://alert-webhook:5001/alerts'
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- name: 'email'
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email_configs:
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- to: 'admin@example.com'
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subject: 'Alert: {{ .GroupLabels.alertname }}'
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body: |
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{{ range .Alerts }}
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Alert: {{ .Annotations.summary }}
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Description: {{ .Annotations.description }}
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{{ end }}
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```
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