安装 vim
apt-get install vim
安装 screen
apt-get install screen
安装 add-apt-repository
apt-get install software-properties-common
安装 go
add-apt-repository ppa:longsleep/golang-backports
apt-get update
apt-get install golang-go
go version
go env -w GOPROXY=https://goproxy.cn
echo "export PATH=$PATH:/root/go-ethereum/build/bin" >> /etc/profile
source /etc/profile
ethereum
最好用git拉取，我docker搭建的ubuntu 20.04环境换了各种源apt-get install包不了 参考链接
apt-get install git
git clone https://github.com/ethereum/go-ethereum
cd go-ethereum
apt-get install -y gcc automake autoconf libtool make
make geth
安装完成
golang.org/x/text/collate
github.com/dop251/goja
github.com/fatih/color
github.com/ethereum/go-ethereum/internal/jsre
github.com/ethereum/go-ethereum/internal/jsre/deps
github.com/ethereum/go-ethereum/internal/web3ext
github.com/ethereum/go-ethereum/console
github.com/naoina/go-stringutil
github.com/naoina/toml/ast
github.com/naoina/toml
github.com/shirou/gopsutil/mem
github.com/ethereum/go-ethereum/cmd/geth
Done building.
Run "./build/bin/geth" to launch geth.
创世区块
mkdir privateChain
cd privateChain/
vim genesis.json
{
"config": {
"chainId": 18812345678901234567890,
"homesteadBlock": 0,
"eip150Block": 0,
"eip155Block": 0,
"eip158Block": 0,
"byzantiumBlock": 0,
"constantinopleBlock": 0,
"petersburgBlock": 0,
"istanbulBlock": 0
},
"alloc": {},
"coinbase": "0x0000000000000000000000000000000000000000",
"difficulty": "0x20",
"extraData": "",
"gasLimit": "0x2fefd8",
"nonce": "0x0000000000000042",
"mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp": "0x00"
}
初始化创世区块
geth --datadir data0 init genesis.json
如果是线下复制go-ethereum到线上的话注意bin里面的权限
-bash: /root/go-ethereum/build/bin/geth: Permission denied
会生成data0文件
root@6f0632246fa0:~/privateChain# ll
total 16
drwxr-xr-x 3 root root 4096 Oct 20 11:41 ./
drwx------ 1 root root 4096 Oct 20 11:40 ../
drwx------ 4 root root 4096 Oct 20 11:41 data0/
-rw-r--r-- 1 root root 610 Oct 20 11:39 genesis.json
data0为指定生成存放数据的地方
root@6f0632246fa0:~/privateChain/data0# ls
geth keystore
keystore 存放账户数据
启用私链
要在data0所在目录执行
geth --datadir data0 console
networkid 指私链id 不要是 1. 以太网公网id是1想其他窗口进入JavaScript [geth.ipc在/root/privateChain/data0目录里]
geth attach geth.ipc
常见问题和命令
查看区块高度
eth.blockNumber
查询是否有用户
eth.accounts
创建用户
personal.newAccount()
查看第一个人的余额
eth.getBalance(eth.accounts[0])
miner.start() 挖矿没到账，可能是没有配置收款人 参考链接
执行设置miner地址：
>miner.setEtherbase(eth.coinbase)
true
Geth管理API文档
以太币转化为wei
amount= web3.toWei(5,'ether')
转账[amount是上面五个以太币转化成的wei]
eth.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:amount})
转账前要解锁账号，否则会报错
eth.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:amount})
Error: authentication needed: password or unlock
at web3.js:6347:37(47)
at web3.js:5081:62(37)
at <eval>:1:20(16)
personal.unlockAccount(eth.accounts[0])
查看转账状态 pending 是正在转账中，需要有人挖矿才能转到账
txpool.status
{
pending: 1,
queued: 0
}
开始挖矿
miner.start(10)
停止挖矿
miner.stop()
