mongodb 初学 意外 连接服务器异常（Connection refused）

TOUVE

2017-05-31T07:42:28.242-0700 I CONTROL  [main] ***** SERVER RESTARTED *****　　
2017-05-31T07:42:28.249-0700 I CONTROL  [initandlisten] MongoDB starting : pid=1163 port=27017 dbpath=/var/lib/mongodb 64-bit host=localhost
　　
2017-05-31T07:42:28.250-0700 I CONTROL  [initandlisten] db version v3.2.13
　　
2017-05-31T07:42:28.250-0700 I CONTROL  [initandlisten] git version: 23899209cad60aaafe114f6aea6cb83025ff51bc
　　
2017-05-31T07:42:28.251-0700 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
　　
2017-05-31T07:42:28.251-0700 I CONTROL  [initandlisten] allocator: tcmalloc
　　
2017-05-31T07:42:28.251-0700 I CONTROL  [initandlisten] modules: none
　　
2017-05-31T07:42:28.251-0700 I CONTROL  [initandlisten] build environment:
　　
2017-05-31T07:42:28.252-0700 I CONTROL  [initandlisten]     distmod: ubuntu1604
　　
2017-05-31T07:42:28.252-0700 I CONTROL  [initandlisten]     distarch: x86_64
　　
2017-05-31T07:42:28.252-0700 I CONTROL  [initandlisten]     target_arch: x86_64
　　
2017-05-31T07:42:28.252-0700 I CONTROL  [initandlisten] options: { config: "/etc/mongod.conf", net: { port: 27017 }, processManagement: { fork: true }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } }
　　
2017-05-31T07:42:28.276-0700 I -        [initandlisten] Detected data files in /var/lib/mongodb created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
　　
2017-05-31T07:42:28.276-0700 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
　　
2017-05-31T07:42:28.461-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
　　
2017-05-31T07:42:28.462-0700 I CONTROL  [initandlisten]
　　
2017-05-31T07:42:28.462-0700 I CONTROL  [initandlisten]
　　
2017-05-31T07:42:28.462-0700 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
　　
2017-05-31T07:42:28.462-0700 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
　　
2017-05-31T07:42:28.462-0700 I CONTROL  [initandlisten]
　　
2017-05-31T07:42:28.463-0700 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
　　
2017-05-31T07:42:28.463-0700 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
　　
2017-05-31T07:42:28.463-0700 I CONTROL  [initandlisten]
　　
2017-05-31T07:42:28.466-0700 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
　　
2017-05-31T07:42:28.466-0700 I NETWORK  [initandlisten] waiting for connections on port 27017
　　
2017-05-31T07:42:28.467-0700 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker
　　
2017-05-31T07:43:01.201-0700 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:56034 #1 (1 connection now open)