fix: improve leadership detection using 'litefs status' to prevent redundant Consul registrations

entrypoint.sh

@@ -11,6 +11,37 @@ NODE_IP="${ADVERTISE_IP}"
 DB_LOCK_FILE="/litefs/.primary"
 NAVIDROME_PID=0
 
+# --- Helper Functions ---
+
+# Check if this node is the LiteFS Primary
+check_primary() {
+  # Role: primary or Role: replica
+  local role=$(litefs status 2>/dev/null | grep "Role" | awk '{print $2}' || echo "unknown")
+  if [ "$role" = "primary" ]; then
+    return 0 # Success, we are primary
+  fi
+  return 1 # Not primary
+}
+
+# Wait for LiteFS to be "Ready" (connected to cluster)
+wait_for_litefs() {
+  echo "Waiting for LiteFS to initialize..."
+  local timeout=60
+  local count=0
+  while [ $count -lt $timeout ]; do
+    # Check if LiteFS is ready by looking for any role in status
+    if litefs status 2>/dev/null | grep -q "Role"; then
+      echo "LiteFS is initialized."
+      return 0
+    fi
+    sleep 2
+    count=$((count + 2))
+    echo -n "."
+  done
+  echo "ERROR: LiteFS failed to initialize after ${timeout}s"
+  return 1
+}
+
 # Tags for the Primary service (Traefik enabled)
 PRIMARY_TAGS='["navidrome","web","traefik.enable=true","urlprefix-/navidrome","tools","traefik.http.routers.navidromelan.rule=Host(`navidrome.service.dc1.consul`)","traefik.http.routers.navidromewan.rule=Host(`m.fbleagh.duckdns.org`)","traefik.http.routers.navidromewan.middlewares=dex@consulcatalog","traefik.http.routers.navidromewan.tls=true"]'
 
@@ -122,15 +153,15 @@ echo "Starting Supervisor. Waiting for leadership settle..."
 echo "Node IP: $NODE_IP"
 echo "Consul: $CONSUL_HTTP_ADDR"
 
-# Small sleep to let LiteFS settle and leadership election complete
-sleep 5
+# Wait for LiteFS to be fully ready before making decisions
+wait_for_litefs || exit 1
 
 LAST_BACKUP_TIME=0
 BACKUP_INTERVAL=86400 # 24 hours
 
 while true; do
-  # In LiteFS 0.5, .primary file exists ONLY on replicas.
-  if [ ! -f "$DB_LOCK_FILE" ]; then
+  # Use explicit LiteFS status check instead of file existence
+  if check_primary; then
     # === WE ARE PRIMARY ===
     
     # 1. If App is not running, start it and register