HyperLedger Fabric(First-Network)

基于官方脚本快速部署第一个fabric网络，本次实验vagrant创建的虚拟机中执行。

实验环境搭建

本文假设你已经安装好vagrant，当你出现如下图所示的信息之后，即可执行下一步。

若还未安装vagrant 请前往https://www.vagrantup.com/ 进行安装后进行下一步操作

创建虚拟机

创建vagrant配置文件，这里指定操作系统为centos7
```
vagrant init centos/7
```

执行后，将在文件夹下创建Vagrantfile 配置文件

编写启动脚本 bootstrap.sh

#!/usr/bin/bash
sudo su
echo "nameserver 8.8.8.8" >> /etc/resolv.conf
sleep 3s
yum install -y epel-release
yum install -y vim
yum install -y golang

yum remove docker docker-common docker-selinux docker-engine
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum makecache fast
yum -y install docker-ce
yum -y install docker-compose
service docker start

mkdir -p /etc/docker
echo {\"registry-mirrors\": [\"https://8w1wqmsz.mirror.aliyuncs.com\"]} > /etc/docker/daemon.json
service docker restart

echo "export GOPROXY=https://goproxy.io,direct" >> /etc/profile
source /etc/profile

修改Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at
  # https://docs.vagrantup.com.

  # Every Vagrant development environment requires a box. You can search for
  # boxes at https://vagrantcloud.com/search.
  config.vm.box = "centos/7"

  # Disable automatic box update checking. If you disable this, then
  # boxes will only be checked for updates when the user runs
  # `vagrant box outdated`. This is not recommended.
  # config.vm.box_check_update = false

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine. In the example below,
  # accessing "localhost:8080" will access port 80 on the guest machine.
  # NOTE: This will enable public access to the opened port
  # config.vm.network "forwarded_port", guest: 80, host: 8080

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine and only allow access
  # via 127.0.0.1 to disable public access
  # config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  # config.vm.network "private_network", ip: "192.168.33.10"

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  # config.vm.network "public_network"

  # Share an additional folder to the guest VM. The first argument is
  # the path on the host to the actual folder. The second argument is
  # the path on the guest to mount the folder. And the optional third
  # argument is a set of non-required options.
  # config.vm.synced_folder "../data", "/vagrant_data"

  # Provider-specific configuration so you can fine-tune various
  # backing providers for Vagrant. These expose provider-specific options.
  # Example for VirtualBox:
  #
  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
   config.vm.provision "shell", path: "bootstrap.sh"
end

启动虚拟机
```
vagrant up
```

搭建fabric网络

在完成虚拟机创建之后，使用vagrant ssh即可进入到虚拟机

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# 进入到虚拟机
vagrant ssh
# 切换root 用户
sudo su

获取源码

go的环境已经通过bootstrap.sh配置好了，接下来获取所需的项目源码

Fabric 源码
```
go get github.com/hyperledger/fabric
```

Fabric-samples 源码

go get github.com/hyperledger/fabric-samples

编译工具cryptogen、configtxgen

进入到fabric源码中切换到 release-1.4 分支

git checkout release-1.4

编译安装cryptogen

进入到 fabric/common/tools/cryptogen 执行 go install 生成 cryptogen二进制工具
```
go install
```
编译安装configtxgen工具

进入到 fabric/common/tools/configtxgen 执行 go install 生成 configtxgen二进制工具
```
go install
```

修改环境变量

修改/etc/profile文件，添加环境变量

export PATH=$PATH:/root/go/bin
#source生效
source /etc/profile

启动fabric网络

在上述操作都完成后，fabric所需环境已经配置好了，接下启动fabric网络。

进入到fabric-samples下，切换到 release-1.4
```
git checkout release-1.4
```
进入到fabric-samples/first-network目录下

这里将使用 byfn.sh 脚本启动fabric网络，执行如下命令。
```
./byfn.sh up
```
后面需询问你，输入y即可
当终端输出如下图所示，即完成了fabric网络的启动。

注意：当你执行./byfn.sh up 后，中间过程有任何一步的报错，都需要执行 ./byfn.sh down 后才能再次执行./byfn.sh up。
Byfn.sh 还有如下操作，这里我就不详细说明了。