cd ~/.jsipfs可以看到ipfs的配置文件“config”。ipfs的所有设置都在这个文件中，可以看下它长什么样：

{
  "Addresses": {
    "Swarm": [
      "/ip4/0.0.0.0/tcp/4002",
      "/ip4/127.0.0.1/tcp/4003/ws"
    ],
    "API": "/ip4/127.0.0.1/tcp/5002",
    "Gateway": "/ip4/127.0.0.1/tcp/9090",
    "Delegates": []
  },
  "Discovery": {
    "MDNS": {
      "Enabled": true,
      "Interval": 10
    },
    "webRTCStar": {
      "Enabled": true
    }
  },
  "Bootstrap": [
    "/ip4/104.236.176.52/tcp/4001/ipfs/QmSoLnSGccFuZQJzRadHn95W2CrSFmZuTdDWP8HXaHca9z",
    "/ip4/104.131.131.82/tcp/4001/ipfs/QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ",
    "/ip4/104.236.179.241/tcp/4001/ipfs/QmSoLPppuBtQSGwKDZT2M73ULpjvfd3aZ6ha4oFGL1KrGM",
    "/ip4/162.243.248.213/tcp/4001/ipfs/QmSoLueR4xBeUbY9WZ9xGUUxunbKWcrNFTDAadQJmocnWm",
    "/ip4/128.199.219.111/tcp/4001/ipfs/QmSoLSafTMBsPKadTEgaXctDQVcqN88CNLHXMkTNwMKPnu",
    "/ip4/104.236.76.40/tcp/4001/ipfs/QmSoLV4Bbm51jM9C4gDYZQ9Cy3U6aXMJDAbzgu2fzaDs64",
    "/ip4/178.62.158.247/tcp/4001/ipfs/QmSoLer265NRgSp2LA3dPaeykiS1J6DifTC88f5uVQKNAd",
    "/ip4/178.62.61.185/tcp/4001/ipfs/QmSoLMeWqB7YGVLJN3pNLQpmmEk35v6wYtsMGLzSr5QBU3",
    "/ip4/104.236.151.122/tcp/4001/ipfs/QmSoLju6m7xTh3DuokvT3886QRYqxAzb1kShaanJgW36yx",
    "/ip6/2604:a880:1:20::1f9:9001/tcp/4001/ipfs/QmSoLnSGccFuZQJzRadHn95W2CrSFmZuTdDWP8HXaHca9z",
    "/ip6/2604:a880:1:20::203:d001/tcp/4001/ipfs/QmSoLPppuBtQSGwKDZT2M73ULpjvfd3aZ6ha4oFGL1KrGM",
    "/ip6/2604:a880:0:1010::23:d001/tcp/4001/ipfs/QmSoLueR4xBeUbY9WZ9xGUUxunbKWcrNFTDAadQJmocnWm",
    "/ip6/2400:6180:0:d0::151:6001/tcp/4001/ipfs/QmSoLSafTMBsPKadTEgaXctDQVcqN88CNLHXMkTNwMKPnu",
    "/ip6/2604:a880:800:10::4a:5001/tcp/4001/ipfs/QmSoLV4Bbm51jM9C4gDYZQ9Cy3U6aXMJDAbzgu2fzaDs64",
    "/ip6/2a03:b0c0:0:1010::23:1001/tcp/4001/ipfs/QmSoLer265NRgSp2LA3dPaeykiS1J6DifTC88f5uVQKNAd",
    "/ip6/2a03:b0c0:1:d0::e7:1/tcp/4001/ipfs/QmSoLMeWqB7YGVLJN3pNLQpmmEk35v6wYtsMGLzSr5QBU3",
    "/ip6/2604:a880:1:20::1d9:6001/tcp/4001/ipfs/QmSoLju6m7xTh3DuokvT3886QRYqxAzb1kShaanJgW36yx",
    "/dns4/node0.preload.ipfs.io/tcp/443/wss/ipfs/QmZMxNdpMkewiVZLMRxaNxUeZpDUb34pWjZ1kZvsd16Zic",
    "/dns4/node1.preload.ipfs.io/tcp/443/wss/ipfs/Qmbut9Ywz9YEDrz8ySBSgWyJk41Uvm2QJPhwDJzJyGFsD6"
  ],
  "Pubsub": {
    "Router": "gossipsub",
    "Enabled": true
  },
  "Swarm": {
    "ConnMgr": {
      "LowWater": 200,
      "HighWater": 500
    }
  },
  "Identity": {
    "PeerID": "QmUhWqhgfFDfUrTiQ......sEc2mNwDXHpDSA8eYBf",
    "PrivKey": "CAASqAkTRrZXVEYiBghlb2........ixsFXo2aPKTSh2NPDleRHivLfrf66UhEDgJdyi"
  },
  "datastore": {
    "Spec": {
      "type": "mount",
      "mounts": [
        {
          "mountpoint": "/blocks",
          "type": "measure",
          "prefix": "flatfs.datastore",
          "child": {
            "type": "flatfs",
            "path": "blocks",
            "sync": true,
            "shardFunc": "/repo/flatfs/shard/v1/next-to-last/2"
          }
        },
        {
          "mountpoint": "/",
          "type": "measure",
          "prefix": "leveldb.datastore",
          "child": {
            "type": "levelds",
            "path": "datastore",
            "compression": "none"
          }
        }
      ]
    }
  },
  "Keychain": {
    "dek": {
      "keyLength": 64,
      "iterationCount": 10000,
      "salt": "WCsaBqmAkzQAPng90FFYUmaZ",
      "hash": "sha2-512"
    }
  }