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feat(episode): BACKFILL_q-d98ac4ae-0fa3-52c6-b6d0-ea0796444c9b_S20260413_XX.bkf.0.warm_qdr.orphan.in.cc.es.000.BKF_J.9DC2D_E.F88-7

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Skill: NONE | Type: chronicle
Summary: Ember detected a factual contradiction between two previously ingested episodes
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Ember 2026-05-11 04:54:37 +00:00
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episodes/BACKFILL_q-d98ac4ae-0fa3-52c6-b6d0-ea0796444c9b_S20260413_XX.bkf.0.warm_qdr.orphan.in.cc.es.000.BKF_J.9DC2D_E.F88-7.md Normal file
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---
episode_id: "9dc2df88-7bde-530c-be06-d5ecd1ef6926"
puente_flat: "BACKFILL_q-d98ac4ae-0fa3-52c6-b6d0-ea0796444c9b_S20260413_XX.bkf.0.warm_qdr.orphan.in.cc.es.000.BKF_J.9DC2D_E.F88-7"
session_code: "S20260413"
acto_dialogico: "informar"
actor_flujo: "ember_internal"
criticidad_aegis: "moderate"
skill_dominante: "NONE"
fase_proyecto: "maintenance"
tipo_semantico: "chronicle"
summary_one_line: "Ember detected a factual contradiction between two previously ingested episodes that must be reconciled via relectura. EP_01 (session S20260315) documents a 502 Bad Gateway error on ember-mcp after re"
source_type: "claude_code"
trust_boundary: "default"
created_at: "2026-05-10T00:00:00+00:00"
relectura_tagged: false
forgejo_commit_sha: "pending"
---
Ember detected a factual contradiction between two previously ingested episodes that must be reconciled via relectura. EP_01 (session S20260315) documents a 502 Bad Gateway error on ember-mcp after restarting Caddy. EP_01 concludes that the root cause was Docker DNS propagation delay caused by using docker restart instead of docker exec caddy caddy reload. The prescribed fix was to always use reload instead of restart.
However, EP_07 (session S20260320) documents a subsequent 502 event where the reload command was used correctly, yet the 502 persisted for 45 seconds. The investigation in EP_07 revealed that the actual root cause was a stale upstream IP cached in Caddy reverse proxy configuration when ember-mcp container was recreated with a new IP address on ember-net. The correct fix documented in EP_07 is to use docker compose up -d instead of manually restarting individual containers, because compose ensures service discovery updates propagate before marking the service as healthy.
This contradiction is significant because EP_01 is frequently retrieved by queries about Caddy 502 errors and provides an incomplete diagnostic that could mislead future troubleshooting. The relectura tag C1 (contradiction) marks EP_01 for reconciliation. The reconciled knowledge should state: (1) docker restart caddy causes DNS propagation delay as documented in EP_01, (2) but the deeper cause is stale upstream IP caching as documented in EP_07, (3) the correct preventive measure is using docker compose up -d for any container recreation in ember-net. The LEXICON entry for CADDY should be updated to reference both episodes and the reconciled diagnostic procedure. This relectura has criticidad 4 because incorrect troubleshooting knowledge in production infrastructure directly impacts uptime of the EMBER ecosystem services.