记录过程与问题
一、安装
以go版本的ethereum进行安装
brew tap ethereum/ethereum
brew install ethereum
# 如果希望基于ethereum的develop分支安装,执行 brew install ethereum --devel
问题:
1、由于我的MacOS系统一直没有更新,导致安装不上,提示XCode版本过低,更新XCode时又提示OS版本过低,没办法重新更新了macos monterey到最新版,然后把所有软件都重新更新了一次
2、go安装过程中出现问题,我是单独进行了go的安装才继续进行下去
安装成功后,可通过 geth --help 查看是否安装好
二、初始化(写入创世区块)
自定义一个创世区块的json配置文件genesis.json,与保存数据目录data
{ "config": { "chainId": 15, "homesteadBlock": 0, "eip155Block": 0, "eip158Block": 0 }, "alloc": {}, "nonce": "0x0000000000000042", "difficulty": "0x020000", "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", "coinbase": "0x0000000000000000000000000000000000000000", "timestamp": "0x00", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa", "gasLimit": "0x4c4b40" }
然后运行初始化命令:
geth --datadir "./data" init ./genesis.json
结果异常如下:
原因:用比较短的negative代码写初始块,会报错。修改json如下:
{ "config": { "chainId": 666, "homesteadBlock": 0, "eip150Block": 0, "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000", "eip155Block": 0, "eip158Block": 0, "byzantiumBlock": 0, "constantinopleBlock": 0, "petersburgBlock": 0, "istanbulBlock": 0, "ethash": {} }, "nonce": "0x0", "timestamp": "0x5ddf8f3e", "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000", "gasLimit": "0x47b760", "difficulty": "0x00002", "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "coinbase": "0x0000000000000000000000000000000000000000", "alloc": { }, "number": "0x0", "gasUsed": "0x0", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000" }
重复运行初始化命令,初始化成功
此时目录结构变成如下情况:
其中,keystore用来保存账户信息,geth用来保存区块信息
三、启动私有链节点
geth --datadir "./data" --networkid 1001 console
–networkid选项后面跟一个数字,这里是1108,表示指定这个私有链的网络id为1108。网络id在连接到其他节点的时候会用到,以太坊公网的网络id是1,为了不与公有链网络冲突,运行私有链节点的时候要指定自己的网络id
输出如下内容即表示成功:
先记录到这里,下一章写创建账户与多私有节点挖矿