想知道更多区块链技术实战，请百度【链客区块链技术问答社区】

单结点部署，一般情况适用于本地开发阶段或线上测试阶段，方便智能合约的开发与调试。

创建工程目录

mkdir -p ~/workmeta/EduEthereumServerDeploy/deploy_1/data

cd ~/workmeta/EduEthereumServerDeploy/deploy_1

此目录主要用于存储所有链生产过程中产生的区块、索引数据以及帐户keystore数据。

预先创建挖矿帐户及预置资金帐户

1. 创建密码文件，后续生成帐户统一使用此密码

echo “111111” > .passwd

2. 创建两个帐户，一个挖矿帐户，一个预置资金帐户

for ((n=0;n<2;n++)); do geth account new --password .passwd --datadir ./data; done

INFO [10-30|10:37:29] Maximum peer count ETH=25 LES=0 total=25

Address: {127eb97163f790dd25c174429d85c3fa7c3cf116} //预设此地址为: 挖矿帐户

INFO [10-30|10:37:30] Maximum peer count ETH=25 LES=0 total=25

Address: {438a22e068b7d62d50a25706476545ab896e8510} //预设此地址为: 预置资金帐户

生成创世区块配置

挖矿帐户: 127eb97163f790dd25c174429d85c3fa7c3cf116

预置资金帐户: 438a22e068b7d62d50a25706476545ab896e8510

具体操作步骤可参考[五、配置创世区块]

注: 因大家在本地生成的帐户与教程中的帐户不同，所以需要根据自己生成帐户进行创世区块配置。

初始化链数据

4.1 根据创始配置(pubchain.json)初始化数据目录

geth init --datadir ./data pubchain.json

1

执行结果如下：

INFO [10-26|13:42:00] Maximum peer count ETH=25 LES=0 total=25

INFO [10-26|13:42:00] Allocated cache and file handles database=/Users/nolan/workmeta/pubchain/data/geth/chaindata cache=16 handles=16

INFO [10-26|13:42:00] Writing custom genesis block

INFO [10-26|13:42:00] Persisted trie from memory database nodes=356 size=65.35kB time=3.010068ms gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B

INFO [10-26|13:42:00] Successfully wrote genesis state database=chaindata hash=f6fcaa…44829b

INFO [10-26|13:42:00] Allocated cache and file handles database=/Users/nolan/workmeta/pubchain/data/geth/lightchaindata cache=16 handles=16

INFO [10-26|13:42:00] Writing custom genesis block

INFO [10-26|13:42:00] Persisted trie from memory database nodes=356 size=65.35kB time=2.1111ms gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B

INFO [10-26|13:42:00] Successfully wrote genesis state database=lightchaindata hash=f6fcaa…44829b

4.2 查询工程目录结构

tree

1

工程目录如下:

.

├── data

│ ├── geth //根据创世配置生成的文件目录

│ │ ├── chaindata

│ │ │ ├── 000001.log

│ │ │ ├── CURRENT

│ │ │ ├── LOCK

│ │ │ ├── LOG

│ │ │ └── MANIFEST-000000

│ │ └── lightchaindata

│ │ ├── 000001.log

│ │ ├── CURRENT

│ │ ├── LOCK

│ │ ├── LOG

│ │ └── MANIFEST-000000

│ └── keystore //[geth account new]命令生成的keystore帐户信息

│ ├── UTC–2018-10-30T02-37-29.289558112Z–127eb97163f790dd25c174429d85c3fa7c3cf116

│ └── UTC–2018-10-30T02-37-30.431416849Z–438a22e068b7d62d50a25706476545ab896e8510

└── pubchain.json //创世区块配置

5 directories, 13 files

工程可参考: https://github.com/ChainDesk/EduEthereumServerDeploy/tree/master/deploy_1

启动节点

执行启动命令

geth --datadir ./data --rpc --rpcaddr “0.0.0.0” --rpcport 8545 --rpcapi “eth,web3,personal,net,miner,admin,debug,db” --unlock 127eb97163f790dd25c174429d85c3fa7c3cf116 --password .passwd --mine

1

整个启动过程如下：

INFO [10-30|10:49:32] Maximum peer count ETH=25 LES=0 total=25

INFO [10-30|10:49:32] Starting peer-to-peer node instance=Geth/v1.8.2-stable/darwin-amd64/go1.10

INFO [10-30|10:49:32] Allocated cache and file handles database=/Users/nolan/workmeta/EduEthereumServerDeploy/deploy_1/data/geth/chaindata cache=768 handles=1024

INFO [10-30|10:49:32] Initialised chain configuration config="{ChainID: 100 Homestead: 1 DAO: DAOSupport: false EIP150: 2 EIP155: 3 EIP158: 3 Byzantium: 4 Constantinople: Engine: clique}"

INFO [10-30|10:49:32] Initialising Ethereum protocol versions="[63 62]"

INFO [10-30|10:49:32] Starting P2P networking

…省去一些日志，要不太长了

INFO [10-30|10:49:35] Starting mining operation

INFO [10-30|10:49:35] Commit new mining work number=1 txs=0 uncles=0 elapsed=130.025µs

INFO [10-30|10:49:35] Successfully sealed new block number=1 hash=9c8e09…919dbe

INFO [10-30|10:49:35] � mined potential block number=1 hash=9c8e09…919dbe

INFO [10-30|10:49:35] Commit new mining work number=2 txs=0 uncles=0 elapsed=585.992µs

^CINFO [10-30|10:49:36] Got interrupt, shutting down…

INFO [10-30|10:49:36] HTTP endpoint closed url=http://0.0.0.0:8545

INFO [10-30|10:49:36] IPC endpoint closed endpoint=/Users/nolan/workmeta/EduEthereumServerDeploy/deploy_1/data/geth.ipc

INFO [10-30|10:49:36] Writing cached state to disk block=1 hash=9c8e09…919dbe root=94b9df…184701

INFO [10-30|10:49:36] Persisted trie from memory database nodes=0 size=0.00B time=3.947µs gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B

…

到此，整个节点就算启动成功了。接下来我们将验证其内部转帐服务。

节点服务验证

6.1 进入geth命令窗口

geth attach http://localhost:8545 //进入geth客户端

1

进入的命令窗口如下所示：

Welcome to the Geth JavaScript console!

instance: Geth/v1.8.17-stable-8bbe7207/linux-amd64/go1.10.4

coinbase: 0xd08e33b7f310aadfe52b5f94c8a04045d2594195

at block: 841 (Tue, 30 Oct 2018 09:04:09 CST)

datadir: /opt/node1

modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 web3:1.0

6.2 查看转帐前金额

查看所有帐户

personal.listAccounts

[“0x127eb97163f790dd25c174429d85c3fa7c3cf116”, “0x438a22e068b7d62d50a25706476545ab896e8510”]

查看帐户余额(0x127eb97163f790dd25c174429d85c3fa7c3cf116)

web3.fromWei(eth.getBalance(web3.personal.listAccounts[0]), “ether”)

0

查看帐户余额(0x438a22e068b7d62d50a25706476545ab896e8510)

web3.fromWei(eth.getBalance(web3.personal.listAccounts[1]), “ether”)

9.04625697166532776746648320380374280103671755200316906558262375061821325312e+56

6.3 执行转帐操作

转帐10eth, 0x438a22e068b7d62d50a25706476545ab896e8510 -> 0x127eb97163f790dd25c174429d85c3fa7c3cf116

1

web3.personal.unlockAccount(web3.personal.listAccounts[1])

Unlock account 0x438a22e068b7d62d50a25706476545ab896e8510

Passphrase:

true

web3.eth.sendTransaction({from: web3.personal.listAccounts[1], to: web3.personal.listAccounts[0], value: web3.toWei(10, “ether”)})

"0x9a1057c619659a08ee15882f0954b9953435b7d065a64ec37fd5d5c8b0ef6247“

6.4 查看转帐后金额

查看帐户余额(0x127eb97163f790dd25c174429d85c3fa7c3cf116)

web3.fromWei(eth.getBalance(web3.personal.listAccounts[0]), “ether”)

10.000378

查看帐户余额(0x438a22e068b7d62d50a25706476545ab896e8510)

web3.fromWei(eth.getBalance(web3.personal.listAccounts[1]), “ether”)

9.04625697166532776746648320380374280103671755200316906548261997061821325312e+56