現象：
啟動mongodb時報錯
分析：
因為這個實例正在運行中導致無法刪除
解決：
1、關閉再開啟
1 [root@server1 mongodb]# mongod -f /etc/mongod.conf --shutdown 2 killing process with pid: 18256
3 [root@server1 mongodb]# mongod -f /etc/mongod.conf 4 about to fork child process, waiting until server is ready for connections. 5 forked process: 35994
6 child process started successfully, parent exiting
2、殺死進程再開啟
1 [root@server1 ~]# netstat -anpt | grep mongod 2 tcp 0 0 0.0.0.0:27019 0.0.0.0:* LISTEN 55285/mongod 3 tcp 0 0 0.0.0.0:27020 0.0.0.0:* LISTEN 55423/mongod 4 tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 54913/mongod 5 tcp 0 0 0.0.0.0:27018 0.0.0.0:* LISTEN 55124/mongod
6 [root@server1 mongodb]# kill 54913
7 [root@server1 mongodb]# mongod -f /etc/mongod.conf 8 about to fork child process, waiting until server is ready for connections. 9 forked process: 25674
10 child process started successfully, parent exiting
問題解決