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kong-k8s-platform/observability/audit-log-collector-configmap.yaml
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Stéphane Tailland 9a889127ca Send Kong traces to Tempo and gateway audit logs to Loki
Point OTEL_TRACES_ENDPOINT at Tempo instead of Jaeger. The variable is a
cluster-wide default, so this moves all five domains at once; Jaeger stays
deployed but no longer receives anything. Tempo derives RED span metrics
and the service graph from these traces on its own, and its trace ids
correlate with the audit logs below.

Add a Loki output to the audit collector. Kong's http-log payload is a
JSON object per request and Loki has no endpoint that accepts it, so
Fluent Bit is the translator between the two formats.

The `domain` label comes from $TAG, which the http input derives from the
request URI. That makes the path a domain posts to its identity here, so
one output block covers every domain and onboarding the next one is a
single AUDIT_LOG_ENDPOINT change on its side rather than another block.

The file output stays on Match * so the on-disk audit trail continues for
every domain, which keeps the switch reversible.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-25 07:25:36 +02:00

47 lines
1.6 KiB
YAML

apiVersion: v1
kind: ConfigMap
metadata:
name: audit-log-collector-config
namespace: observability
data:
# Fluent Bit's http input derives the record tag from the request URI, so the
# path a domain's http-log plugin posts to IS its identity here:
# POST /catalog -> tag `catalog` -> Loki label domain=catalog
# Each domain therefore gets its own label without a per-domain output block,
# and onboarding one is a single ${AUDIT_LOG_ENDPOINT} change on its side.
#
# Kong's http-log payload is a JSON object per request and Loki has no
# endpoint that accepts it directly, so Fluent Bit is the translator between
# Kong's format and Loki's push API.
fluent-bit.conf: |
[SERVICE]
Flush 1
Log_Level info
[INPUT]
Name http
Listen 0.0.0.0
Port 8888
# On-disk audit trail, kept alongside Loki: the switch stays reversible
# for as long as this output is here.
[OUTPUT]
Name file
Match *
Path /data
File audit.jsonl
Format plain
# Labels stay deliberately low-cardinality — the full Kong record (route,
# status, latencies, captured bodies) rides in the log line itself and is
# queryable with LogQL's json parser. `domain` comes from the tag, i.e.
# from the URI the domain posted to.
[OUTPUT]
Name loki
Match *
Host loki.observability.svc.cluster.local
Port 3100
Labels job=kong-audit, domain=$TAG
Label_Keys $service['name']
Line_Format json