最近区块链，火得不行，身边也有朋友准备玩这个，说是搭了一个星期，没有把环境搭建起来，叫我帮忙看看环境怎么搭建
于是我找到了官方的地址 https://github.com/ethereum/go-ethereum
发现官方是支持docker 的
于是我创建了如下目录
➜ block-chain pwd
/Users/jackluo/Works/block-chain
➜ block-chain ls
ethereum start-ethereum.sh
start-ethereum.sh的内容如下
docker stop ethereum-node
docker rm ethereum-node docker run -d --name ethereum-node -v /Users/jackluo/Works/block-chain/ethereum:/root \
-p : -p : \
ethereum/client-go
docker exec -it ethereum-node /bin/sh
我们把当前的 ethereum目录，挂到了docker 的/root下
我们接下来创建私有链
➜ block-chain cd ethereum
➜ ethereum ls
genesis.json privatechain
我们根据官方的文档 创建 genesis.json文件里面写入
{
"config": {
"chainId": 0,
"homesteadBlock": 0,
"eip155Block": 0,
"eip158Block": 0
},
"alloc" : {},
"coinbase" : "0x0000000000000000000000000000000000000000",
"difficulty" : "0x20000",
"extraData" : "",
"gasLimit" : "0x2fefd8",
"nonce" : "0x0000000000000042",
"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00"
}参数的话，具体看文件档
接下来，我们启动以太坊的docker 容器
➜ block-chain ./start-ethereum.sh
Error response from daemon: No such container: ethereum-node
Error response from daemon: No such container: ethereum-node
d421da09e63900d1cc9481529ab2a5868515fb821520b548f10e0bd2f3608c0c
/ #
/ #
/ # ls
bin dev etc home lib media mnt proc root run sbin srv sys tmp usr var
/ # cd /root/
~ # ls
genesis.json privatechain
~ # cd privatechain/
~/privatechain # ls
data0 genesis.json
~/privatechain # pwd
/root/privatechain
~/privatechain #
接下来初始化他
~/privatechain # geth --datadir data0 init genesis.json
INFO [03-06|05:21:40] Maximum peer count ETH=25 LES=0 total=25
INFO [03-06|05:21:40] Allocated cache and file handles database=/root/privatechain/data0/geth/chaindata cache=16 handles=16
INFO [03-06|05:21:40] Persisted trie from memory database nodes=0 size=0.00B time=41.5µs gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B
INFO [03-06|05:21:40] Successfully wrote genesis state database=chaindata hash=ed1fb6…1760ca
INFO [03-06|05:21:40] Allocated cache and file handles database=/root/privatechain/data0/geth/lightchaindata cache=16 handles=16
INFO [03-06|05:21:40] Persisted trie from memory database nodes=0 size=0.00B time=10.5µs gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B
INFO [03-06|05:21:40] Successfully wrote genesis state database=lightchaindata hash=ed1fb6…1760ca
接下来，启动私有链
~/privatechain # geth --identity "TestNode" --rpc --rpcport "8545" --datadir data0 --port "3033" --nodiscover console
INFO [03-06|05:26:44] Maximum peer count ETH=25 LES=0 total=25
INFO [03-06|05:26:44] Starting peer-to-peer node instance=Geth/TestNode/v1.8.2-unstable-0b814d32/linux-amd64/go1.9.4
INFO [03-06|05:26:44] Allocated cache and file handles database=/root/privatechain/data0/geth/chaindata cache=768 handles=1024
INFO [03-06|05:26:44] Initialised chain configuration config="{ChainID: 1024 Homestead: 0 DAO: <nil> DAOSupport: false EIP150: <nil> EIP155: 0 EIP158: 0 Byzantium: <nil> Constantinople: <nil> Engine: unknown}"
INFO [03-06|05:26:44] Disk storage enabled for ethash caches dir=/root/privatechain/data0/geth/ethash count=3
INFO [03-06|05:26:44] Disk storage enabled for ethash DAGs dir=/root/.ethash count=2
INFO [03-06|05:26:44] Initialising Ethereum protocol versions="[63 62]" network=1
INFO [03-06|05:26:44] Loaded most recent local header number=0 hash=ed1fb6…1760ca td=1024
INFO [03-06|05:26:44] Loaded most recent local full block number=0 hash=ed1fb6…1760ca td=1024
INFO [03-06|05:26:44] Loaded most recent local fast block number=0 hash=ed1fb6…1760ca td=1024
INFO [03-06|05:26:44] Loaded local transaction journal transactions=0 dropped=0
INFO [03-06|05:26:44] Regenerated local transaction journal transactions=0 accounts=0
INFO [03-06|05:26:44] Starting P2P networking
INFO [03-06|05:26:44] RLPx listener up self="enode://3264cbba213bc88c407c55576f148d5c2b6afa5013a7c204085e01c5e4dc24a9235bd9abf86681d0d36349fa8031367c31adb534a469f4ea1e156047bf96befb@[::]:3033?discport=0"
INFO [03-06|05:26:44] IPC endpoint opened url=/root/privatechain/data0/geth.ipc
INFO [03-06|05:26:44] HTTP endpoint opened url=http://127.0.0.1:8545 cors= vhosts=localhost
Welcome to the Geth JavaScript console! instance: Geth/TestNode/v1.8.2-unstable-0b814d32/linux-amd64/go1.9.4
INFO [03-06|05:26:44] Etherbase automatically configured address=0xFc2D11A7A4408b77d95202c0A455cfd44F2A4cFD
coinbase: 0xfc2d11a7a4408b77d95202c0a455cfd44f2a4cfd
at block: 0 (Thu, 01 Jan 1970 00:00:00 UTC)
datadir: /root/privatechain/data0
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
基本上已经启起来了
其它，参考了下 https://g2ex.github.io/2017/09/12/ethereum-guidance/ 这个