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docs(course): добавлен урок по мониторингу стенда

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- Зачем:
  - нужен завершённый урок 5, который объясняет мониторинг стенда без предположения, что менти уже знаком с Grafana.
- Что:
  - добавлен урок про Prometheus targets, Grafana dashboards, exporters и alert rules.
  - описан управляемый сбой через остановку airflow-scheduler и восстановление стенда.
  - обновлены навигация курса, план урока и названия панелей мониторинга в operations runbook.
- Проверка:
  - git diff --cached --check.
  - сверка названий dashboard/panel/alert rules с provisioning-файлами Grafana.
This commit is contained in:
ddadmin
2026-06-05 20:20:42 +03:00
parent 707da9f80e
commit d55f183fc9
4 changed files with 380 additions and 9 deletions
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docs/OPERATIONS.md
+6 -6
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@@ -188,8 +188,8 @@ URL: `http://localhost:3000/d/clickhouse-overview/clickhouse-overview`
| Раздел | Метрики |
|--------|---------|
| System Health | CPU Usage, Memory Resident, Memory Code |
| Query Performance | Queries/sec, Active Queries, Failed Queries, Total Queries, Inserted Rows/sec |
| MergeTree Storage | Total Parts, Parts by State, Total Merges, Merges/sec |
| Query Performance | Queries per Second, Active Queries, Failed Queries (total), Total Queries, Inserted Rows/sec |
| MergeTree Storage | Total Parts, Parts by State, Total Merges, Merges per Second |
Принятое решение по метрикам: сверили naming через Context7 (`/clickhouse/clickhouse-docs`, раздел Prometheus interface) и заменили недоступные в `25.1` серии на фактически экспортируемые (`ClickHouseProfileEvents_InsertedRows`, `ClickHouseAsyncMetrics_TotalPartsOfMergeTreeTables`, `ClickHouseMetrics_Parts*`).
@@ -199,10 +199,10 @@ URL: `http://localhost:3000/d/kafka-overview/kafka-overview`
| Раздел | Метрики |
|--------|---------|
| Cluster Health | Brokers Up, Topics Count, Total Partitions, Consumer Groups |
| Throughput | Messages In/sec by Topic |
| Consumers | Consumer Lag by Group, Consumer Lag Table |
| Partitions | Partition Offsets (Current), Oldest vs Current Offset Gap |
| Cluster Health | Brokers Up, Topics, Total Partitions, Consumer Groups |
| Throughput | Messages In / sec by Topic |
| Consumers | Consumer Lag by Group |
| Partitions | Partition Offsets (Current) |
**Источник метрик:** `kafka-exporter` (danielqsj/kafka-exporter), формат конфигурации подтверждён через Context7 (`/danielqsj/kafka_exporter`, `/prometheus/docs`).