ubuntu系统，早上启动不起来。只好复位键强行重启后，执行
>> sudo service mongodb start mongodb start/running, process 1059
但是发现无法链接，然后执行
>> sudo service mongodb stop stop: Unknown instance
搞不懂了，怎么办？
Try deleting the mongo.lock file in the data folder and restarting
Check if mongdb is indeed running, if so it can be used
sudo mongod --shutdown --dbpath <PATH_TO_DB>
It should be caused by abnormal shutdown. linux: sudo top, check to see if there is a process running mongo. If so, kill it and try starting mongo.
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Try deleting the mongo.lock file in the data folder and restarting
Check if mongdb is indeed running, if so it can be used
It should be caused by abnormal shutdown.
linux:
sudo top, check to see if there is a process running mongo. If so, kill it and try starting mongo.