Ubuntu下Mongodb数据库连接失败问题

1.遇到的问题: connecting to: test2017-10-24T14:02:02.640+0800 W NETWORK [thread1] Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused2017-10-24T14:02:02.693+0800 E QUERY [thread1] Er

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