同步并运行主链¶

PCHAIN主网安装后，请执行

pchain

以此就可以同步主网的区块以及交易，您应该可以看到输出的内容如下方:

INFO [05-21|09:47:41.666] Starting PChain...
INFO [05-21|09:47:41.666] PChain supports large scale block-chain applications with multi-chain
INFO [05-21|09:47:41.667] Create peer-to-peer node                 instance=pchain/linux-amd64/go1.11.4
INFO [05-21|09:47:41.667] ethereum.MakeSystemNode
INFO [05-21|09:47:41.669] Allocated cache and file handles         database=/home/ubuntu/.pchain/pchain/geth/chaindata cache=768 handles=512
INFO [05-21|09:47:41.692] Writing default main-net genesis block
INFO [05-21|09:47:41.704] Persisted trie from memory database      nodes=182 size=48.66kB time=1.1982ms gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B
INFO [05-21|09:47:41.705] Initialised chain configuration          config="{PChainId: pchain ChainID: 24160843454325667600331855523506733810605584168331177014437733538279768116753 Homestead: 0 DAO: <nil> DAOSupport: false EIP150: 0 EIP155: 0 EIP158: 0 Byzantium: 0 Constantinople: <nil> Engine: tendermint}"
INFO [05-21|09:47:41.720] Tendermint (backend) Protocol, add logic here
INFO [05-21|09:47:41.720] Initialising Ethereum protocol           versions=[64] network=1
INFO [05-21|09:47:41.720] Loaded most recent local header          number=0 hash=c6ade9…f2f8c3 td=1024
INFO [05-21|09:47:41.720] Loaded most recent local full block      number=0 hash=c6ade9…f2f8c3 td=1024
INFO [05-21|09:47:41.720] Loaded most recent local fast block      number=0 hash=c6ade9…f2f8c3 td=1024
INFO [05-21|09:47:41.721] Regenerated local transaction journal    transactions=0 accounts=0
INFO [05-21|09:47:41.721] Tendermint (backend) SetBroadcaster: 0xc0001e22d0
INFO [05-21|09:47:41.721] Tendermint (backend) Protocol, add logic here
INFO [05-21|09:47:41.732] Allocated cache and file handles         database=/home/ubuntu/.pchain/tx3cache              cache=16  handles=16
INFO [05-21|09:47:41.737] Starting P2P networking
INFO [05-21|09:47:43.846] UDP listener up                          self=enode://7b3f6226995c73acfb9f792b8aa73e8c2b1eb35656c9cd7d8c9287c34c0241c34c595d3bb6c7d0b0b7678bf5df0d1e8693bc735bd4a2311e50bd7f4a5d80fd7c@[::]:30308
INFO [05-21|09:47:43.846] Start Chain: pchain
INFO [05-21|09:47:43.846] StartChain()->utils.StartNode(stack)
INFO [05-21|09:47:43.849] RLPx listener up                         self=enode://7b3f6226995c73acfb9f792b8aa73e8c2b1eb35656c9cd7d8c9287c34c0241c34c595d3bb6c7d0b0b7678bf5df0d1e8693bc735bd4a2311e50bd7f4a5d80fd7c@[::]:30308
INFO [05-21|09:47:43.851] IPC endpoint opened                      url=/home/ubuntu/.pchain/pchain/pchain.ipc
INFO [05-21|09:47:43.851] Before Load Child Chains, childChainIds is [], len is 0
INFO [05-21|09:47:43.851] Number of Child Chain to be load - 0
INFO [05-21|09:47:43.851] Start to Load Child Chain - map[]
INFO [05-21|09:47:45.011] Block synchronisation started
...

以上就表示您所运行的pchain正开始在同步中了。如果想让它在后端运行，可以通过以下命令：

(./pchain --verbosity=0 &)

Pchain启动之后，系统会在默认的数据目录下创建一个存储区块链数据的目录

Platform	Default Datadir Directory
Linux	~/.pchain
Mac	~/Library/Pchain
Windows	%APPDATA%Pchain

您也可以通过‘flag-datadir’将数据目录设置在其他地方。数据目录的结构如同下方：

datadir/
        -chaininfo.db/
        -config.toml
        -nodekey
        -nodes/
        -tx3cache/
        -pchain/
                -data/
                -geth/
                -pchain.ipc
                -priv_validator.json  //you may not have this file now
                -keystore/