CENTOS7 on the etheric square Ethereum Building

Environmental CENTOS7.2 x64

In order to maintain the operation, the operation path is unified in/data/eth.

Ethereum Construction (environment construction is very important, pre-fill many of the deep pits behind the exploration process!) ）

# After installing the virtual machine, update the CentOS server and download the git, wget, vim, gcc-c++, NTP components, Nodejs, and add epel third-party installation sources. This step is very important to save you time when you are constantly making mistakes while installing ethereum and open frames. A brief description of each tool is presented below:

# git, wget: Install related components, download and install all kinds of open source code and tools;

# Vim: Text Editing tool, replace VI;

# gcc-c++:c/c++ Compilation tool for compiling Golang and truffle components under the C library

# NTP: Network clock synchronization component; Ethereum RPC network needs time synchronization;

# Nodejs:ethereum Front-end development JavaScript package management software

# Epel: Network third-party Linux installation package source

Yum update-y && yum install git wget bzip2 vim gcc-c++ NTP epel-release Nodejs cmake-y

# download Golang (1.9.1 and 1.92 both compile failed, re-download 1.10 to compile successfully)

Domestic Mirror: HTTPS://STUDYGOLANG.COM/DL

#cd/usr

#wget https://studygolang.com/dl/golang/go1.10.1.linux-amd64.tar.gz

# tar-c/root-xzf go1.10.1.linux-amd64.tar.gz

# Unzip the Golang and move the working directory to/usr/local/go

Tar zxvf go1.10.1.linux-amd64.tar.gz

mvgo/usr/local/

# Configure Goroot and path

echo "Export Goroot=/usr/local/go" >>/etc/profile

echo "Export path= $PATH:/usr/local/go/bin" >>/etc/profile

Source/etc/profile

# Clone and Compile Go-ethereum

git clone https://github.com/ethereum/go-ethereum.git

CD Go-ethereum

Make all

#创建完毕后在path中入geth路径

echo "Export path= $PATH:/root/go-ethereum/build/bin" >>/etc/profile

Source/etc/profile

# Install CMake: Smart contract compilation SOLC need CMake compilation

# Originally to install cmake with Yum, but Yum and Epel source only 2.8.x version of the CMake, and the smart contract compiler SOLC installation requires more than 3.0.x CMake version. Therefore only to the official website installs independently.

# download CMake Latest version, login to https://cmake.org/download/, find the latest version download address

CD && wget https://cmake.org/files/v3.9/cmake-3.9.2.tar.gz

# Unzip and compile and install

TAR-XZVF cmake-3.9.2.tar.gz

CD cmaker-3.9.2

./bootstrap && make && make install

# Start Network time synchronization

Systemctl Enable NTPD

Systemctl Start NTPD

# Another geth will use 8078 and 30303 ports, let go of firewall ports 8078 and 30303

Turn off the firewall

Systemctl Stop Firewalld

# config Geth private Genesis configuration file: Genesis.json, which describes how to initialize a private gethereum

Cd

Vim Genesis.json

# Enter the following and save to exit

{

"Nonce": "0x0000000000000042",

"Timestamp": "0x00",

"Parenthash": "0x0000000000000000000000000000000000000000000000000000000000000000",

"Extradata": "0x00",

"Gaslimit": "0x80000000",

"Difficulty": "0x400",

"Mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",

"Coinbase": "0x2d356ee3f5b8718d8690afcd31fe2cb5e602677e",

"Alloc": {},

"Config": {

"Chainid": 15,

"Homesteadblock": 0,

"Eip155block": 0,

"Eip158block": 0

}

}

# Create a private network Gethereum

Geth--datadir "/data/eth/ethbase/chain" Init/data/eth/genesis.json

The environment is now complete.

Deployment results

# more commonly used in the development environment of the test, you can directly start the default Geth development environment, note: Double minus, 2 and >> no space between

Geth--dev Console 2>> Geth_dev_log

# into the console actually into the Ethereum JavaScript environment, I think this is probably the great EVM (Ethereum virtual machine).

# If you want to focus on the log during the operation, you can use another SSH to observe the tail

Tail-f Geth_dev_log

#启用私有链

Geth--datadir "/data/eth/ethbase/chain"--nodiscover console 2>>eth_output.log

You can see the output log by executing tail-f eth_output.log in the current directory.