geth安装

1. 安装go环境

wget https://studygolang.com/dl/golang/go1.13.10.linux-amd64.tar.gz
tar -zxvf go1.13.10.linux-amd64.tar.gz
mkdir go-pck
#配置环境变量
export GOROOT=$HOME/my-app/go      #go目录
export GOPATH=$HOME/my-app/go-pck   #go依赖包目录
export PATH="$PATH:$GOROOT/bin" 
#使用阿里云 Go Module 国内镜像仓库服务
go env -w GO111MODULE=on
go env -w GOPROXY=https://mirrors.aliyun.com/goproxy/,direct

2.安装go-ethereum

git clone git@gitee.com:mirrors/go-ethereum.git  
cd go-ethereum
make geth
/**Ubuntu会出现以下错误，找到hid.c文件 将 include <iconv.h> 改为 include "/usr/include/iconv.h"
*../go-pck/pkg/mod/github.com/karalabe/usb@v0.0.0-20190919080040-51dc0efba356/hidapi/libusb/hid.c:444*：对‘libiconv_open’未定义的引用
*../go-pck/pkg/mod/github.com/karalabe/usb@v0.0.0-20190919080040-51dc0efba356/hidapi/libusb/hid.c:456：对‘libiconv’未定义的引用
*../go-pck/pkg/mod/github.com/karalabe/usb@v0.0.0-20190919080040-51dc0efba356/hidapi/libusb/hid.c:471：对‘libiconv_close’未定义的引用
**/

3. 搭建私链

mkdir my_private
cd my_private
touch genesis.json
#填入以下内容
{
  "config": {
    "chainId": 20
    "homesteadBlock": 0,
    "eip150Block": 0,
    "eip155Block": 0,
    "eip158Block": 0,
    "byzantiumBlock": 0,
    "constantinopleBlock": 0,
    "petersburgBlock": 0,
    "istanbulBlock": 0
  },
  "alloc": {},
  "coinbase": "0x0000000000000000000000000000000000000000",
  "difficulty": "0x2000",                              #挖矿难道
  "extraData": "",
  "gasLimit": "0x2fefd8",
  "nonce": "0x0000000000000042",
  "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "timestamp": "0x00"
}
#初始化
geth init  ./genesis.json
#启动私链
geth --datadir . --networkid 20 --rpc console 2 > output.log 

4. 启动测试链

mkdir dev-eth
cd dev-eth
touch output.log 
geth --datadir . --dev --rpc --rpcapi="eth,net,web3,personal" console 2>output.log