我在远程Ubuntu服务器上运行mongo集群（v 3.4.1）。该服务器昨天意外关闭。从那以后，我无法连接到mongo。
我通过ssh连接到服务器以检查mongo是否正在运行。似乎是这种情况，因为如果我使用mongo命令，我会得到以下输出：
MongoDB shell version v3.4.2
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.1
Server has startup warnings:
2017-09-28T08:01:43.906+0000 I STORAGE [initandlisten]
2017-09-28T08:01:43.906+0000 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2017-09-28T08:01:43.906+0000 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2017-09-28T08:01:44.204+0000 I CONTROL [initandlisten]
2017-09-28T08:01:44.204+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-09-28T08:01:44.204+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2017-09-28T08:01:44.204+0000 I CONTROL [initandlisten]
现在，如果我运行“mongod”，我会得到例外：
...
2017-09-28T10:10:26.065+0200 I STORAGE [initandlisten] exception in initAndListen: 20 Attempted to create a lock file on a read-only directory: /data/db, terminating
2017-09-28T10:10:26.065+0200 I NETWORK [initandlisten] shutdown: going to close listening sockets...
...
我尝试了sudo模式，我得到了：
...
2017-09-28T10:12:21.857+0200 E NETWORK [initandlisten] listen(): bind() failed Address already in use for socket: 0.0.0.0:27017
2017-09-28T10:12:21.857+0200 E NETWORK [initandlisten] addr already in use
2017-09-28T10:12:21.857+0200 E NETWORK [initandlisten] Failed to set up sockets during startup.
2017-09-28T10:12:21.857+0200 E STORAGE [initandlisten] Failed to set up listener: InternalError: Failed to set up sockets
2017-09-28T10:12:21.857+0200 I NETWORK [initandlisten] shutdown: going to close listening sockets...
...
这意味着mongo的一个实例已经在运行......
然后，在列出sudo service mongod stop进程后，我尝试使用sudo pkill mongod或sudo kill <PID>或ps -ef | grep mongo杀死mongo进程。但是这个过程并没有从列表中消失（似乎它立即重新启动）。
因此，如果我尝试运行sudo mongod --dbpath /data/db --repair（目录中有一个mongod.lock文件），我仍然会收到错误“地址已在使用中”。
任何帮助都会非常感激！