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fix(step-ca): prevent PID exhaustion from zombie health check processes #120

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fix(step-ca): prevent PID exhaustion from zombie health check processes #120

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7 changes: 5 additions & 2 deletions docker-compose.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -130,16 +130,19 @@ services:
- ./scripts/step-ca-entrypoint.sh:/scripts/step-ca-entrypoint.sh:ro
networks:
- hermithost-net
# tini as PID 1 reaps zombie children from health check forks,
# preventing PID exhaustion over multi-day uptime.
init: true
restart: unless-stopped
depends_on:
step-ca-init:
condition: service_completed_successfully
technitium:
condition: service_healthy
# step-ca binds :9000; curl is not in the image so we use wget (busybox).
# -k: self-signed root during first boot is acceptable here.
# CMD (exec) form avoids an intermediate /bin/sh child that could zombie.
healthcheck:
test: ["CMD-SHELL", "wget -qO- --no-check-certificate https://localhost:9000/health || exit 1"]
test: ["CMD", "wget", "-qO-", "--no-check-certificate", "https://localhost:9000/health"]
interval: 10s
retries: 12
timeout: 5s
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