《Hyperledger Fabric菜鸟进阶攻略》 —1.4.2　构建你的第一个Hyperledger Fabric网络

1.4.2　构建你的第一个Hyperledger Fabric网络

1.生成证书和密钥

byfn.sh自动化脚本文件为各种Hyperledger Fabric网络实体生成所有证书和密钥，并且可以实现引导服务启动及配置通道所需的一系列配置文件：

$ sudo ./byfn.sh -m generate

命令成功执行后会生成1个Orderer + 4个Peer + 1个CLI的网络结构，4个Peer包含在2个Org中。

根据提示输入y，之后终端输出类似如下的日志内容：

Generating certs and genesis block for channel 'mychannel' with CLI timeout of

  '10' seconds and CLI delay of '3' seconds

Continue [Y/n] y

proceeding ...

/home/kevin/hyfa/fabric-samples/first-network/../bin/cryptogen

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # Generate certificates using cryptogen tool # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

+ cryptogen generate --config=./crypto-config.yaml

org1.example.com

org2.example.com

+ res=0

+ set +x

/home/kevin/hyfa/fabric-samples/first-network/../bin/configtxgen

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

# # # # # # # # # Generating Orderer Genesis block # # # # # # # # # # # # # #

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

+ configtxgen -profile TwoOrgsOrdererGenesis -outputBlock ./channel-artifacts/

  genesis.block

……

doOutputAnchorPeersUpdate -> INFO 003 Writing anchor peer update

+ res=0

+ set +x

2.启动网络

生成所需要的证书及密钥之后，需要启动网络来确认Hyperledger Fabric网络环境是否能够正常工作，使用byfn.sh脚本来实现网络的启动，命令如下：

$ sudo ./byfn.sh -m up

命令执行后，终端会输出一个提示信息，根据提示输入y，如果输出如下类似内容，则代表网络启动且测试成功：

Starting for channel 'mychannel' with CLI timeout of '10' seconds and CLI

  delay of '3' seconds

Continue [Y/n] y

proceeding ...

LOCAL_VERSION=1.2.0

DOCKER_IMAGE_VERSION=1.2.0

Creating network "net_byfn" with the default driver

Creating volume "net_peer0.org2.example.com" with default driver

Creating volume "net_peer1.org2.example.com" with default driver

Creating volume "net_peer1.org1.example.com" with default driver

Creating volume "net_peer0.org1.example.com" with default driver

Creating volume "net_orderer.example.com" with default driver

Creating peer0.org2.example.com

Creating peer0.org1.example.com

Creating peer1.org2.example.com

Creating orderer.example.com

Creating peer1.org1.example.com

Creating cli

____   _____     _     ____   _____

/ ___| |_   _|   / \   | _ \ |_   _|

\___ \   | |     / _ \   | |_) |   | | 

___) |   | |   / ___ \ | _ <   | | 

|____/   |_|   /_/   \_\ |_| \_\   |_|

Build your first network (BYFN) end-to-end test

……

========Query successful on peer1.org2 on channel 'mychannel'==========

========= All GOOD, BYFN execution completed ===========

_____   _   _   ____ 

| ____| | \ | | | _ \

| _|   | \| | | | | |

| |___ | |\ | | |_| |

|_____| |_| \_| |____/ 

3.关闭网络

网络测试成功后，为了方便后期的操作，最好将其关闭，以防止后期启动网络时造成的冲突错误，关闭网络可执行如下命令：

$ sudo ./byfn.sh -m down

根据提示输入y，命令执行后终端输出类似如下的日志内容：

Stopping for channel 'mychannel' with CLI timeout of '10' seconds and CLI

  delay of '3' seconds

Continue [Y/n] y

proceeding ...

Stopping cli ... done

Stopping peer1.org1.example.com ... done

……

Removing cli ... done

Removing peer1.org1.example.com ... done

……

7fb4e7907b3c

708576aff44f

0a8805ff393d

Untagged: dev-peer1.org2.example.com-mycc-1.0-26c2ef32838554aac4f7ad6f100aca86

  5e87959c9a126e86d764c8d01f8346ab:latest

Deleted: sha256:687d517a67c1b236724deb84c50e310fb87f39341de5c66857e3049222a99504

Deleted: sha256:be2477e444d06842e81fb691e4e94f7ed4a547aeb8ba4a963660356a915b61c7

……

使用byfn.sh脚本关闭网络之后，将关闭容器，且删除加密文件，并从Docker Registry中删除链码图像。

在网络不再使用时，请务必关闭网络，以防止后期启动网络时引起冲突的错误。

FAQ

如果启动网络失败怎么办？

如果启动网络时发生错误，则执行关闭命令后重新生成组织结构及证书，然后再次执行启动网络的命令。