以太坊私有链的搭建

1.建一个目录

2.编写配置文件

eric@eric-virtual-machine:~/ethdev2$ pwd
/home/eric/ethdev2
eric@eric-virtual-machine:~/ethdev2$ cat piccgenesis.json 
{
  "config": {
        "chainId": 15,
        "homesteadBlock": 0,
        "eip155Block": 0,
        "eip158Block": 0
    },
    "coinbase" : "0x0000000000000000000000000000000000000000",
    "difficulty" : "0x40000",
    "extraData" : "",
    "gasLimit" : "0xffffffff",
    "nonce" : "0x0000000000000042",
    "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    "timestamp" : "0x00",
    "alloc": { }
}

　3.初始化

eric@eric-virtual-machine:~/ethdev2$ geth --datadir "./chain" init piccgenesis.json
WARN [01-18|00:10:53] No etherbase set and no accounts found as default
INFO [01-18|00:10:53] Allocated cache and file handles database=/home/eric/ethdev2/chain/geth/chaindata cache=16 handles=16
INFO [01-18|00:10:53] Writing custom genesis block
INFO [01-18|00:10:53] Successfully wrote genesis state database=chaindata hash=a0e580…a5e82e
INFO [01-18|00:10:53] Allocated cache and file handles database=/home/eric/ethdev2/chain/geth/lightchaindata cache=16 handles=16
INFO [01-18|00:10:53] Writing custom genesis block
INFO [01-18|00:10:53] Successfully wrote genesis state database=lightchaindata hash=a0e580…a5e82e
eric@eric-virtual-machine:~/ethdev2$ ll
total 32
drwxrwxr-x 3 eric eric 4096 1月 18 00:10 ./
drwx------ 40 eric eric 12288 1月 18 00:06 ../
drwx------ 4 eric eric 4096 1月 18 00:10 chain/
-rw-rw-r-- 1 eric eric 528 1月 18 00:06 piccgenesis.json
eric@eric-virtual-machine:~/ethdev2$

　4.打开控制台

geth --datadir "./chain" --nodiscover console 2>>geth.log

　　

eric@eric-virtual-machine:~/ethdev2$ geth --datadir "./chain" --nodiscover console 2>>geth.log
Welcome to the Geth JavaScript console!

instance: Geth/v1.7.3-stable-4bb3c89d/linux-amd64/go1.9
 modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0

> 

eric@eric-virtual-machine:~/ethdev2$ tail -f geth.log
INFO [01-18|00:12:34] Disk storage enabled for ethash caches dir=/home/eric/ethdev2/chain/geth/ethash count=3
INFO [01-18|00:12:34] Disk storage enabled for ethash DAGs dir=/home/eric/.ethash count=2
INFO [01-18|00:12:34] Initialising Ethereum protocol versions="[63 62]" network=1
INFO [01-18|00:12:34] Loaded most recent local header number=0 hash=a0e580…a5e82e td=262144
INFO [01-18|00:12:34] Loaded most recent local full block number=0 hash=a0e580…a5e82e td=262144
INFO [01-18|00:12:34] Loaded most recent local fast block number=0 hash=a0e580…a5e82e td=262144
INFO [01-18|00:12:34] Regenerated local transaction journal transactions=0 accounts=0
INFO [01-18|00:12:34] Starting P2P networking
INFO [01-18|00:12:34] RLPx listener up self="enode://e07a3c23250473ae5416fd7441a405859db9d6b366eb25a265a12ccb673ad3a6385ba61b83b9019a6d23f0e26665376a6b186d64ef5135fe30f3363a333dfd36@[::]:30303?discport=0"
INFO [01-18|00:12:34] IPC endpoint opened: /home/eric/ethdev2/chain/geth.ipc

　5.开始挖矿

eric@eric-virtual-machine:~/ethdev3$  geth --datadir "./chain" --nodiscover console 2>>geth.log
Welcome to the Geth JavaScript console!

instance: Geth/v1.7.3-stable-4bb3c89d/linux-amd64/go1.9
 modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0

> eth.accounts
[]
> personal.newAccount('123')
"0xbd84af58aaf48fcb1821333b0213a48266919bda"
> miner.start()
null
> eth.mining
true
> eth.
(anonymous): Line 2:1 Unexpected end of input
> eth.block
undefined
> eth.blockchain
undefined
> eth.blockNumber
0
> eth.blockNumber
0
> eth.blockNumber
0
> eth.blockNumber

5537
>