Fix: Improve Docker services automatic startup and restart order
**Motivations:** - Docker services (bitcoind and mempool) were not starting automatically after reboot - Mempool API was unhealthy because it tried to connect to bitcoind before it was ready - No restart policy for bitcoind container - Restart script started mempool before bitcoind, causing connection errors **Root causes:** - Bitcoind container had no restart policy (restart: no) - Restart script started mempool before bitcoind - No wait for bitcoind RPC to be ready before starting mempool - No boot startup script for Docker services **Correctifs:** - Configured restart policy for bitcoind container: docker update --restart=always - Improved restart-services-cron.sh: - Start/restart bitcoind BEFORE mempool - Wait for bitcoind RPC to be ready (max 60s) before starting mempool - Detect if container is stopped (start) or running (restart) - Use 'docker compose up -d' for mempool instead of 'restart' - Created start-docker-services.sh: - Start bitcoind first - Wait for bitcoind RPC to be ready (max 120s at boot) - Start mempool after bitcoind - Logging to data/start-docker-services.log - Created docker-services.service: - Systemd service to start Docker services at boot - Runs after docker.service and network.target - Executes start-docker-services.sh **Evolutions:** - Automatic startup at boot: Docker services start automatically after reboot - Guaranteed startup order: Bitcoind always starts before mempool - Availability check: Wait for bitcoind to be ready before starting mempool - Restart policy: Bitcoind container restarts automatically if stopped - Better observability: Detailed logs for diagnosis **Pages affectées:** - data/restart-services-cron.sh: Improved startup order and availability checks - data/start-docker-services.sh: New boot startup script - data/docker-services.service: New systemd service for automatic startup - fixKnowledge/docker-services-boot-startup.md: Documentation of improvements
This commit is contained in:
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data/docker-services.service
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data/docker-services.service
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[Unit]
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Description=Start Docker services (bitcoind and mempool) at boot
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After=docker.service network.target
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Requires=docker.service
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[Service]
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Type=oneshot
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RemainAfterExit=yes
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User=ncantu
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WorkingDirectory=/home/ncantu/Bureau/code/bitcoin
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ExecStart=/home/ncantu/Bureau/code/bitcoin/data/start-docker-services.sh
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StandardOutput=journal
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StandardError=journal
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# Security
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NoNewPrivileges=true
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PrivateTmp=true
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[Install]
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WantedBy=multi-user.target
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@ -62,14 +62,57 @@ for u in "${restarted[@]}"; do
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fi
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done
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# 4. Docker: mempool stack (local only)
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# 4. Docker: bitcoind container (local only) - START FIRST
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# Bitcoind must be running before mempool can connect to it
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if docker ps -a -q -f "name=^${BITCOIND_CONTAINER}$" 2>/dev/null | grep -q .; then
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log "Starting/restarting $BITCOIND_CONTAINER..."
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bitcoind_ok=0
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if docker ps -q -f "name=^${BITCOIND_CONTAINER}$" 2>/dev/null | grep -q .; then
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# Container is running, just restart it
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if docker restart "$BITCOIND_CONTAINER" &>/dev/null; then
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bitcoind_ok=1
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fi
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else
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# Container exists but is stopped, start it
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if docker start "$BITCOIND_CONTAINER" &>/dev/null; then
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bitcoind_ok=1
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fi
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fi
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if [ "$bitcoind_ok" -eq 1 ]; then
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log " $BITCOIND_CONTAINER started, waiting for RPC to be ready..."
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# Wait for bitcoind RPC to be ready (max 60 seconds)
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max_wait=60
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wait_count=0
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while [ $wait_count -lt $max_wait ]; do
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if docker exec "$BITCOIND_CONTAINER" bitcoin-cli -datadir=/root/.bitcoin getblockchaininfo &>/dev/null; then
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log " $BITCOIND_CONTAINER RPC ready"
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break
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fi
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sleep 1
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wait_count=$((wait_count + 1))
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done
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if [ $wait_count -ge $max_wait ]; then
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log " WARN: $BITCOIND_CONTAINER RPC not ready after ${max_wait}s"
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fi
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else
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log " $BITCOIND_CONTAINER FAILED"
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fi
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else
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log "SKIP: $BITCOIND_CONTAINER container not found (bitcoind may run as systemd)"
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fi
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# 5. Docker: mempool stack (local only) - START AFTER BITCOIND
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# Mempool depends on bitcoind being ready
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if [ -f "$MEMPOOL_COMPOSE" ] && command -v docker &>/dev/null; then
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log "Restarting mempool (docker)..."
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log "Starting/restarting mempool (docker)..."
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mem_ok=1
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(cd "${PROJECT_DIR}/mempool" && docker compose -f docker-compose.signet.yml restart &>/dev/null) && mem_ok=0
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[ "$mem_ok" -ne 0 ] && (cd "${PROJECT_DIR}/mempool" && docker-compose -f docker-compose.signet.yml restart &>/dev/null) && mem_ok=0
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(cd "${PROJECT_DIR}/mempool" && docker compose -f docker-compose.signet.yml up -d &>/dev/null) && mem_ok=0
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[ "$mem_ok" -ne 0 ] && (cd "${PROJECT_DIR}/mempool" && docker-compose -f docker-compose.signet.yml up -d &>/dev/null) && mem_ok=0
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if [ "$mem_ok" -eq 0 ]; then
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log " mempool OK"
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log " mempool started"
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# Wait a bit for mempool to initialize
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sleep 5
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else
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log " mempool FAILED"
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fi
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@ -81,17 +124,5 @@ else
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fi
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fi
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# 5. Docker: bitcoind container (local only)
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if docker ps -a -q -f "name=^${BITCOIND_CONTAINER}$" 2>/dev/null | grep -q .; then
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log "Restarting $BITCOIND_CONTAINER..."
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if docker restart "$BITCOIND_CONTAINER" &>/dev/null; then
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log " $BITCOIND_CONTAINER OK"
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else
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log " $BITCOIND_CONTAINER FAILED"
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fi
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else
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log "SKIP: $BITCOIND_CONTAINER container not found (bitcoind may run as systemd)"
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fi
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log "=== Done ==="
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tail -n 100 "$LOG_FILE" > "$LOG_FILE.tmp" && mv "$LOG_FILE.tmp" "$LOG_FILE"
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73
data/start-docker-services.sh
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data/start-docker-services.sh
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#!/bin/bash
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# Start Docker services at boot (bitcoind and mempool).
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# This script ensures bitcoind starts before mempool.
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# Can be called from systemd service or cron @reboot.
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# Log: data/start-docker-services.log
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#
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# Local only: no SSH, no remote commands.
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
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LOG_FILE="$SCRIPT_DIR/start-docker-services.log"
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MEMPOOL_COMPOSE="${PROJECT_DIR}/mempool/docker-compose.signet.yml"
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BITCOIND_CONTAINER="bitcoin-signet-instance"
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log() { echo "$(date -Iseconds) $*" | tee -a "$LOG_FILE"; }
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cd "$PROJECT_DIR" || exit 1
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log "=== Start Docker services at boot ==="
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# Check if docker is available
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if ! command -v docker &>/dev/null; then
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log "ERROR: docker command not found"
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exit 1
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fi
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# 1. Start bitcoind container (must be first)
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if docker ps -a -q -f "name=^${BITCOIND_CONTAINER}$" 2>/dev/null | grep -q .; then
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if docker ps -q -f "name=^${BITCOIND_CONTAINER}$" 2>/dev/null | grep -q .; then
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log "$BITCOIND_CONTAINER already running"
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else
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log "Starting $BITCOIND_CONTAINER..."
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if docker start "$BITCOIND_CONTAINER" &>/dev/null; then
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log " $BITCOIND_CONTAINER started"
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# Wait for bitcoind RPC to be ready (max 120 seconds at boot)
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max_wait=120
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wait_count=0
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while [ $wait_count -lt $max_wait ]; do
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if docker exec "$BITCOIND_CONTAINER" bitcoin-cli -datadir=/root/.bitcoin getblockchaininfo &>/dev/null; then
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log " $BITCOIND_CONTAINER RPC ready after ${wait_count}s"
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break
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fi
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sleep 2
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wait_count=$((wait_count + 2))
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done
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if [ $wait_count -ge $max_wait ]; then
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log " WARN: $BITCOIND_CONTAINER RPC not ready after ${max_wait}s (may still be starting)"
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fi
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else
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log " ERROR: Failed to start $BITCOIND_CONTAINER"
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fi
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fi
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else
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log "SKIP: $BITCOIND_CONTAINER container not found"
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fi
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# 2. Start mempool stack (after bitcoind)
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if [ -f "$MEMPOOL_COMPOSE" ]; then
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log "Starting mempool stack..."
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mem_ok=1
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(cd "${PROJECT_DIR}/mempool" && docker compose -f docker-compose.signet.yml up -d &>/dev/null) && mem_ok=0
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[ "$mem_ok" -ne 0 ] && (cd "${PROJECT_DIR}/mempool" && docker-compose -f docker-compose.signet.yml up -d &>/dev/null) && mem_ok=0
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if [ "$mem_ok" -eq 0 ]; then
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log " mempool stack started"
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else
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log " ERROR: Failed to start mempool stack"
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fi
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else
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log "SKIP: mempool compose not found"
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fi
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log "=== Done ==="
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tail -n 100 "$LOG_FILE" > "$LOG_FILE.tmp" && mv "$LOG_FILE.tmp" "$LOG_FILE"
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183
fixKnowledge/docker-services-boot-startup.md
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fixKnowledge/docker-services-boot-startup.md
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# Fix: Amélioration du démarrage automatique des services Docker (bitcoind et mempool)
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**Auteur** : Équipe 4NK
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**Date** : 2026-01-28
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**Version** : 1.0
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## Problème identifié
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Lors du redémarrage de la machine, les services Docker (bitcoind et mempool) ne démarraient pas automatiquement ou dans le bon ordre, causant :
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- Le conteneur `bitcoin-signet-instance` était arrêté après un reboot
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- Le mempool API était unhealthy car il ne pouvait pas se connecter à bitcoind
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- Aucune politique de redémarrage automatique pour le conteneur bitcoind
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- Le script de redémarrage redémarrait mempool avant bitcoind, causant des erreurs de connexion
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### Symptômes
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- Après un reboot, `bitcoin-signet-instance` était arrêté (status: Exited)
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- Le mempool API était unhealthy avec erreurs `connect ECONNREFUSED 172.17.0.1:38332`
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- Les requêtes vers mempool retournaient 502 Bad Gateway
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- Le script `restart-services-cron.sh` redémarrait mempool avant bitcoind
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### Impact
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- **Fonctionnalité** : Mempool ne fonctionnait pas après un reboot
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- **Service** : Les ancrages Bitcoin ne pouvaient pas être vérifiés via mempool
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- **Maintenance** : Intervention manuelle requise après chaque reboot
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## Root causes
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1. **Pas de restart policy** : Le conteneur `bitcoin-signet-instance` n'avait pas de politique de redémarrage automatique (`restart: no`)
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2. **Ordre de démarrage incorrect** : Le script redémarrait mempool avant bitcoind, causant des erreurs de connexion
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3. **Pas d'attente de disponibilité** : Le script ne vérifiait pas que bitcoind était prêt avant de démarrer mempool
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4. **Pas de script de démarrage au boot** : Aucun mécanisme pour démarrer automatiquement les services Docker au boot
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## Correctifs appliqués
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### 1. Configuration de la restart policy pour bitcoind
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**Action** : Configuration de la politique de redémarrage automatique pour le conteneur bitcoind
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```bash
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docker update --restart=always bitcoin-signet-instance
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```
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**Résultat** : Le conteneur redémarre automatiquement en cas d'arrêt ou après un reboot
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### 2. Amélioration du script `restart-services-cron.sh`
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**Fichier** : `data/restart-services-cron.sh`
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**Modifications** :
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- **Ordre de démarrage** : Bitcoind est maintenant démarré/redémarré AVANT mempool
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- **Vérification de disponibilité** : Attente que le RPC bitcoind soit prêt (max 60s) avant de démarrer mempool
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- **Gestion des états** : Détection si le conteneur est arrêté (start) ou en cours d'exécution (restart)
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- **Utilisation de `up -d`** : Utilisation de `docker compose up -d` au lieu de `restart` pour mempool (démarre si arrêté, redémarre si en cours)
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**Avant** :
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```bash
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# 4. Docker: mempool stack (redémarré avant bitcoind)
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# 5. Docker: bitcoind container
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```
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**Après** :
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```bash
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# 4. Docker: bitcoind container (START FIRST)
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# - Attente que RPC soit prêt (max 60s)
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# 5. Docker: mempool stack (START AFTER BITCOIND)
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```
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### 3. Création du script `start-docker-services.sh`
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**Fichier** : `data/start-docker-services.sh`
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**Fonctionnalités** :
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- Démarrage de bitcoind en premier
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- Attente que le RPC bitcoind soit prêt (max 120s au boot)
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- Démarrage de mempool après bitcoind
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- Logging dans `data/start-docker-services.log`
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- Rotation des logs (100 dernières lignes)
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**Usage** : Peut être appelé depuis un service systemd ou un cron `@reboot`
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### 4. Création du service systemd `docker-services.service`
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**Fichier** : `data/docker-services.service`
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**Configuration** :
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- Démarre après `docker.service` et `network.target`
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- Exécute `start-docker-services.sh` au boot
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- Type `oneshot` avec `RemainAfterExit=yes`
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- Logs via journald
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**Installation** :
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```bash
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sudo cp data/docker-services.service /etc/systemd/system/
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sudo systemctl daemon-reload
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sudo systemctl enable docker-services
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sudo systemctl start docker-services
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```
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## Modifications
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**Fichiers modifiés** :
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- `data/restart-services-cron.sh` : Amélioration de l'ordre de démarrage et ajout de vérifications
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**Fichiers créés** :
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- `data/start-docker-services.sh` : Script de démarrage au boot
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- `data/docker-services.service` : Service systemd pour démarrage automatique
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- `fixKnowledge/docker-services-boot-startup.md` : Cette documentation
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## Modalités de déploiement
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1. **Configurer la restart policy** (déjà fait) :
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```bash
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docker update --restart=always bitcoin-signet-instance
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```
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2. **Installer le service systemd** (optionnel mais recommandé) :
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```bash
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sudo cp data/docker-services.service /etc/systemd/system/
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sudo systemctl daemon-reload
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sudo systemctl enable docker-services
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sudo systemctl start docker-services
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```
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3. **Vérifier le fonctionnement** :
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```bash
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# Vérifier que bitcoind redémarre automatiquement
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docker restart bitcoin-signet-instance
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docker ps | grep bitcoin-signet-instance
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# Vérifier que mempool démarre après bitcoind
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sudo systemctl status docker-services
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```
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4. **Tester après un reboot** :
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```bash
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# Après reboot, vérifier
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docker ps | grep -E "(bitcoin|mempool)"
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curl http://localhost:3015/api/v1/blocks/tip/height
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```
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## Modalités d'analyse
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- **Logs du service systemd** :
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```bash
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sudo journalctl -u docker-services -f
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```
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- **Logs du script** :
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```bash
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tail -f data/start-docker-services.log
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```
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- **Vérification des conteneurs** :
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```bash
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docker ps --format "table {{.Names}}\t{{.Status}}"
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docker inspect bitcoin-signet-instance --format='{{.HostConfig.RestartPolicy.Name}}'
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```
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- **Vérification de la connectivité** :
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```bash
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# Bitcoind RPC
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docker exec bitcoin-signet-instance bitcoin-cli -datadir=/root/.bitcoin getblockchaininfo
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# Mempool API
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curl http://localhost:3015/api/v1/blocks/tip/height
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```
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## Evolutions
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- **Démarrage automatique au boot** : Les services Docker démarrent automatiquement après un reboot
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- **Ordre de démarrage garanti** : Bitcoind démarre toujours avant mempool
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- **Vérification de disponibilité** : Attente que bitcoind soit prêt avant de démarrer mempool
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- **Restart policy** : Le conteneur bitcoind redémarre automatiquement en cas d'arrêt
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- **Meilleure observabilité** : Logs détaillés pour le diagnostic
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## Références
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- Documentation existante : `features/cron-restart-services-local.md`
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- Script de redémarrage : `data/restart-services-cron.sh`
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- Script de démarrage : `data/start-docker-services.sh`
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