mongod コマンドが使えない

Question

go言語によるwebアプリケーション開発を読み進めているのですが、5章のmongodbを扱うところで詰まっていて、mongodコマンドが使えないのですがどうしたら良いのかわからずじまいです。

ちなみにpathを通すとかいうのもよくわからないので、そちらも一緒にご回答いただけると助かります。

ログはこうした形です。

2016-07-05T15:21:44.883+0900 I CONTROL  [initandlisten] MongoDB starting : pid=23290 port=27017 dbpath=/data/db 64-bit host=hazuuuunnomacpro.local
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] db version v3.2.7
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] git version: 4249c1d2b5999ebbf1fdf3bc0e0e3b3ff5c0aaf2
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2h  3 May 2016
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] allocator: system
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] modules: none
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] build environment:
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten]     distarch: x86_64
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten]     target_arch: x86_64
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] options: { storage: { dbPath: "/data/db" } }
2016-07-05T15:21:44.884+0900 E NETWORK  [initandlisten] listen(): bind() failed errno:48 Address already in use for socket: 0.0.0.0:27017
2016-07-05T15:21:44.884+0900 E NETWORK  [initandlisten]   addr already in use
2016-07-05T15:21:44.884+0900 E STORAGE  [initandlisten] Failed to set up sockets during startup.
2016-07-05T15:21:44.884+0900 I CONTROL  [initandlisten] dbexit:  rc: 48

すみませんがわかる方いましたらよろしくお願いします。

Comments

[pi-chan]

実行したコマンドと（もしあれば）コンソールに表示されたエラーもご連携ください。それと実行環境に関する情報を。OSや使用しているソフトウェアのバージョンなど。

[退会済みユーザー]

mongod --dbpath ./db
とうって上記のログが表示されました。

brew でインストールしました。
バージョン等はこんな感じです。
db version v3.2.7
git version: 4249c1d2b5999ebbf1fdf3bc0e0e3b3ff5c0aaf2
OpenSSL version: OpenSSL 1.0.2h 3 May 2016
allocator: system
modules: none
build environment:
distarch: x86_64
target_arch: x86_64

mac el capitanです。

[退会済みユーザー]

logはこんな感じです。

2016-07-01T16:54:32.437+0900 I CONTROL [initandlisten] MongoDB starting : pid=13563 port=27017 dbpath=/usr/local/var/mongodb 64-bit host=hazuuuunnomacpro.local
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] db version v3.2.7
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] git version: 4249c1d2b5999ebbf1fdf3bc0e0e3b3ff5c0aaf2
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.2h 3 May 2016
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] allocator: system
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] modules: none
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] build environment:
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] distarch: x86_64
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] target_arch: x86_64
2016-07-01T16:54:32.439+0900 I CONTROL [initandlisten] options: { config: "/usr/local/etc/mongod.conf", net: { bindIp: "127.0.0.1" }, storage: { dbPath: "/usr/local/var/mongodb" }, systemLog: { destination: "file", logAppend: true, path: "/usr/local/var/log/mongodb/mongo.log" } }
2016-07-01T16:54:32.441+0900 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=4G,session_max=20000,eviction=(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),
2016-07-01T16:54:32.851+0900 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2016-07-01T16:54:32.851+0900 I CONTROL [initandlisten]
2016-07-01T16:54:32.852+0900 I NETWORK [HostnameCanonicalizationWorker] Starting hostname canonicalization worker
2016-07-01T16:54:32.852+0900 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/usr/local/var/mongodb/diagnostic.data'
2016-07-01T16:54:32.976+0900 I NETWORK [initandlisten] waiting for connections on port 27017
2016-07-01T16:55:43.683+0900 I NETWORK [initandlisten] connection accepted from 127.0.0.1:58846 #1 (1 connection now open)
2016-07-01T16:55:55.590+0900 I NETWORK [conn1] end connection 127.0.0.1:58846 (0 connections now open)
2016-07-01T16:58:02.142+0900 I NETWORK [initandlisten] connection accepted from 127.0.0.1:59049 #2 (1 connection now open)
2016-07-01T17:09:40.529+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T17:24:46.761+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T17:39:52.176+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T17:54:58.937+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T18:10:05.246+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T18:25:11.822+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T18:27:12.902+0900 I COMMAND [conn2] dropDatabase mydb starting
2016-07-01T18:27:12.920+0900 I COMMAND [conn2] dropDatabase mydb finished
2016-07-01T18:39:15.478+0900 I NETWORK [conn2] end connection 127.0.0.1:59049 (0 connections now open)
2016-07-01T18:40:17.621+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T18:41:48.072+0900 I NETWORK [initandlisten] connection accepted from 127.0.0.1:49746 #3 (1 connection now open)
2016-07-01T18:46:25.927+0900 I NETWORK [conn3] end connection 127.0.0.1:49746 (0 connections now open)
2016-07-01T18:55:23.850+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T19:10:29.381+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T19:25:35.289+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-01T19:40:40.948+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.0.0.27, "nodename nor servname provided, or not known"), (10.0.0.27, "nodename nor servname provided, or not known") ]
2016-07-02T12:04:32.491+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain address information for hostname hazuuuunnomacpro.local: nodename nor servname provided, or not known
2016-07-02T20:55:20.779+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8639:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8639:dcee:606:9007:2, "nodename nor servname provided, or not known"), (2001:268:c066:8639:dcee:606:9007:2, "nodename nor servname provided, or not known"), (2001:268:c066:8639:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T17:33:44.004+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T17:48:53.608+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T18:04:03.691+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T18:31:14.003+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T18:46:23.778+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T19:01:33.295+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:dcee:606:9007:8, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known"), (192.168.100.100, "nodename nor servname provided, or not known") ]
2016-07-03T19:16:43.347+0900 W NETWORK [HostnameCanonicalizationWorker] Failed to obtain name info for: [ (2001:268:c066:8a2e:a65e:60ff:feba:9e09, "nodename nor servname provided, or not known"), (2001:268:c066:8a2e:d

Answer 1

mongod --dbpathと打つと通らないという問題だが

mongo-27017.sockが生き残っていたためにエラーが発生していた。
また権限を渡していないところもあった。
手前で、もう止まっているように見えても、裏側ではまだ生きている可能性があることを聞いたので、それを消したら見事にdbpathを指定して、動くようになった。

動いたコマンド sudo mongod --dbpath /data/db