我有一点网络服务。在后端我得到了dockerized mongo和一些偶然的东西，比如nodejs＆amp; nginx的。一切都在单独的容器中。并通过虚拟网络进行通信。 所以我的网络服务工作了几个月。在此期间，我的数据库已被删除两次。但我甚至没有做出任何改变。
Mongo将数据保存到卷中。因此重启容器后所有数据都可以。我检查了日志，看到了这个。但我不知道为什么会这样。这是一些黑客攻击吗？
2017-05-10T13:30:31.592+0000 I NETWORK [initandlisten] connection accepted from 178.174.137.79:51802 #120 (4 connections now open)
2017-05-10T13:30:31.719+0000 I COMMAND [conn120] dropDatabase DB_DROPPED starting
2017-05-10T13:30:31.734+0000 I COMMAND [conn120] dropDatabase DB_DROPPED finished
2017-05-10T13:30:31.775+0000 I COMMAND [conn120] dropDatabase hypergraph starting
2017-05-10T13:30:32.196+0000 I COMMAND [conn120] dropDatabase hypergraph finished
2017-05-10T13:30:32.198+0000 I COMMAND [conn120] command hypergraph command: dropDatabase { dropDatabase: 1.0 } keyUpdates:0 writeConflicts:0 numYields:0 reslen:61 locks:{ Global: { acquireCount: { r: 2, w: 1, W: 1 } }, Database: { acquireCount: { W: 1 } } } protocol:op_query 421ms
2017-05-10T13:30:32.238+0000 I COMMAND [conn120] dropDatabase local starting
2017-05-10T13:30:32.242+0000 I COMMAND [conn120] dropDatabase local finished
2017-05-10T13:30:32.278+0000 I NETWORK [conn120] end connection 178.174.137.79:51802 (3 connections now open)