Error: failed to create deliver client for orderer: orderer client failed to connect to orderer

環境

操作系統:CentOS 7
Fabric版本: 2.0.1

問題

創建通道時報錯(yaml文件已通過extra_hosts方式配置域名解析)

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem

報錯:
Error: failed to create deliver client for orderer: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: connection error: desc = “transport: error while dialing: dial tcp 192.168.1.20:7050: connect: no route to host”

解決方案:關閉防火牆

systemctl status firewalld.service          #查看防火牆狀態
systemctl stop firewalld.service            #停止firewall
systemctl disable firewalld.service         #禁止firewall開機啓動

再次執行創建通道命令即可