marcel/familienarchiv
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fix(obs): fix OTLP transport port and add application metrics tag

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- Change OTEL default endpoint from port 4317 (gRPC) to 4318 (HTTP) to
  match Spring Boot's HttpExporter; sending HTTP/1.1 to a gRPC listener
  caused "Connection reset" errors
- Add otel.logs.exporter=none: Promtail captures Docker logs via the
  logging driver; sending logs to Tempo's OTLP endpoint (which only
  handles traces) produced 404 errors
- Add management.metrics.tags.application to every metric so Grafana's
  Spring Boot Observability dashboard (ID 17175) can filter by the
  application label_values() template variable
- Add MANAGEMENT_METRICS_TAGS_APPLICATION and OTEL_LOGS_EXPORTER env
  vars to docker-compose.prod.yml; production Tempo endpoint already
  uses 4318
- Add MANAGEMENT_TRACING_SAMPLING_PROBABILITY to prod compose with
  0.1 default to avoid 100% trace sampling in production

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Marcel
2026-05-16 15:18:13 +02:00
parent bd57310bbf
commit 45a992f5a8
2 changed files with 14 additions and 3 deletions
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5
docker-compose.prod.yml
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@@ -213,7 +213,10 @@ services:
APP_MAIL_FROM: ${APP_MAIL_FROM:-noreply@raddatz.cloud}
SPRING_MAIL_PROPERTIES_MAIL_SMTP_AUTH: ${MAIL_SMTP_AUTH:-true}
SPRING_MAIL_PROPERTIES_MAIL_SMTP_STARTTLS_ENABLE: ${MAIL_STARTTLS_ENABLE:-true}
OTEL_EXPORTER_OTLP_ENDPOINT: http://tempo:4317
OTEL_EXPORTER_OTLP_ENDPOINT: http://tempo:4318
OTEL_LOGS_EXPORTER: none
MANAGEMENT_METRICS_TAGS_APPLICATION: Familienarchiv
MANAGEMENT_TRACING_SAMPLING_PROBABILITY: ${MANAGEMENT_TRACING_SAMPLING_PROBABILITY:-0.1}
networks:
- archiv-net
healthcheck: