54 lines
801 B
Markdown
54 lines
801 B
Markdown
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# 08_healthchecks.md
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# Healthchecks
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## Status trennen
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```text
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running ≠ healthy ≠ ready ≠ working
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```
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## HTTP Health
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```text
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/health /ready /api/health /actuator/health
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```
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Soll schnell, ohne Auth, stabil und billig sein.
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## DB/Redis
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```text
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Postgres: pg_isready
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MySQL: mysqladmin ping
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Redis: redis-cli ping
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```
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## Einstellungen
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```text
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start_period für langsame Apps
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interval/retries realistisch
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timeout nicht zu knapp
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```
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## Dummy Healthcheck
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`CMD true` nur temporär zur Diagnose, nie final.
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## Migration/Init
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One-shot Jobs nicht wie dauerhafte Services healthchecken. Ggf. `exclude_from_hc`, separater Migrationsschritt oder Entry-Migration+Start.
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## No Available Server
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Prüfen:
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```text
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unhealthy
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falscher Port
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localhost binding
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Proxy-Ziel falsch
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App noch nicht ready
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```
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