远程连接ubuntu的MongoDB遇到的坑

• 首先连接不上，先查看云服务器上的安全组是否添加了对应的端口
• 如果打开了，那么久查看MongoDB是否允许远程连接

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
  dbPath: /var/lib/mongodb
  journal:
    enabled: true
#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
net:
  port:
  bindIp: 0.0.0.0

#processManagement:

#security:

#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

重点查看net下的bindIp，如果是127.0.0.1的话就改成0.0.0.0

使用启动命令：

sudo systemctl start mongod

因为使用

sudo service mongodb start

会报错

查看MongoDB的日志：

cat /var/log/mongodb/mongod.log

如果报错是：

Detected unclean shutdown - /var/lib/mongodb/mongod.lock is not empty.

那就直接删除掉那个文件

rm -rf /var/lib/mongodb/mongod.lock

如果报错为：

Failed to unlink socket file /tmp/mongodb-.sock Operation not permitted

那就直接删除掉那个文件：

rm -rf /tmp/mongodb-.sock

如果报错为：

WiredTiger error () [:][:0x7f42abbdad00], file:WiredTiger.wt, connection: /var/lib/mongodb/WiredTiger.turtle: handle-open: open: Permission denied

那就提升权限：

sudo chown -R mongodb:mongodb /var/lib/mongodb

然后使用

sudo systemctl start mongod

启动即可