网易云课堂视频在线教学，地址：https://study.163.com/course/introduction/1209401942.htm
16.1 在运行e2e_cli例子时，执行./network_setup.sh up，出现错误：网络搭建之network e2ecli_default not found
问题原因：
End-2-End例子的目录是e2e_cli，启动后会创建一个docker network的名字为e2e_cli_default，但是配置中设置了e2ecli_default这个与生成的network名对应不上。
解决方法：
修改e2e_cli/base目录下的peer-base.yaml中的配置，如下：
-CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=e2e_cli_default
16.2 在运行e2e_cli例子时，执行./network_setup.sh up，出现错误：Error: Error endorsing chaincode: rpc error: code = Unknown desc = Timeout expired while starting chaincode mycc:1.0(networkid:dev,peerid:peer0.org2.example.com,tx:d6902b58171dd3b9bafb981885959c263589fb66d475cff79a7b5c519c24a603)
问题原因：
由于dev-peer0.org2.example.com-mycc-1.0 docker 镜像存在问题，需要删除。
解决方法：
执行如下命令：
1)删除旧的链码镜像
# docker stop $(docker ps -a -q) # docker rm $(docker ps -a -q) # docker rmi -f $(docker images |grep "dev-" |awk '{print $3}')
2)重启Fabric网络
# ./network_setup.sh up
16.3 运行自主Helloworld案例时，出现Error: endorsement failure during query. response: status:500 message:"make sure the chaincode mycc has been successfully instantiated and try again: getccdata mychannel/mycc responded with error: could not find chaincode with name 'mycc'"
问题原因：
通过阿里云docker镜像时，获取latest版本时，还没有升级到1.2版本。
解决方法：
1)删除旧的链码镜像
# docker stop $(docker ps -a -q) # docker rm $(docker ps -a -q) # docker rmi $(docker images -q)
2)下载最新的镜像
# docker pull hyperledger/fabric-peer:amd64-1.2.0 # docker pull hyperledger/fabric-orderer:amd64-1.2.0 # docker pull hyperledger/fabric-tools:amd64-1.2.0 # docker pull hyperledger/fabric-ccenv:amd64-1.2.0 # docker pull hyperledger/fabric-baseos:amd64-0.4.10
16.4 运行自主Helloworld案例peer channel create时，出现Error: failed to create deliver client: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded
问题原因：
防火墙阻止了7050端口
解决方法：
# firewall-cmd --list-ports # firewall-cmd --zone=public --add-port=7050/tcp --permanent # firewall-cmd --reload
16.5 多机多节点部署在peer1.org2.example.com上执行peer channel join -b mychannel.block，出现，Error: error getting endorser client for channel: endorser client failed to connect to peer1.org2.example.com:7051: failed to create new connection: context deadline exceeded
问题原因：
防火墙阻止了7051端口
解决方法：
# firewall-cmd --list-ports # firewall-cmd --zone=public --add-port=7051/tcp --permanent # firewall-cmd --reload
16.6 Fabric kafka生产环境部署启动Orderer时，出现orderer2.example.com|panic: [channel: testchainid] Cannot post CONNECT message = dial tcp 192.168.235.5:9092: connect: no route to host
问题原因：
防火墙阻止了9092端口
解决方法：
# firewall-cmd --list-ports # firewall-cmd --zone=public --add-port=9092/tcp --permanent # firewall-cmd –reload
16.7 Fabric kafka生产环境部署节点（peer）智能合约实例化时，出现Error: could not assemble transaction, err Proposal response was not successful, error code 500, msg failed to execute transaction 42306f917663058379fda4fd1dd7366d302b6bc9d6cd952c59701f38755caca4: timeout expired while starting chaincode cc-qklszzzcc:1.0 for transaction 42306f917663058379fda4fd1dd7366d302b6bc9d6cd952c59701f38755caca4
问题原因：
域名没有和IP完成映射
解决方法：
# vi /etc/hosts
添加如下内容：
192.168.235.3 zookeeper0
192.168.235.4 zookeeper1
192.168.235.5 zookeeper2
192.168.235.3 kafka0
192.168.235.4 kafka1
192.168.235.5 kafka2
192.168.235.6 kafka3
192.168.235.3 orderer0.example.com
192.168.235.4 orderer1.example.com
192.168.235.5 orderer2.example.com
192.168.235.7 peer0.org1.example.com
192.168.235.8 peer1.org1.example.com
192.168.235.9 peer0.org2.example.com
192.168.235.10 peer1.org2.example.com