我正在尝试运行此处提供的 Fabric 示例：https://github.com/hyperledger/fabric-samples/tree/release-1.2/first-network https://github.com/hyperledger/fabric-samples/tree/release-1.2/first-network
我遵循了 Fabric 文档的所有说明：https://hyperledger-fabric.readthedocs.io/en/release-1.2/build_network.html https://hyperledger-fabric.readthedocs.io/en/release-1.2/build_network.html，但遇到错误“执行 End-2-End Scenario 失败”。以下是我输入后的输出./byfn.sh up在终端。
我什至在google和stackoverflow上都没有发现任何类似的问题
./byfn.sh up
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
Starting peer1.org1.example.com ... done
Starting orderer.example.com ... done
Starting peer0.org2.example.com ... done
Starting peer1.org2.example.com ... done
Starting peer0.org1.example.com ... done
Starting cli ... done
____ _____ _ ____ _____
/ ___| |_ _| / \ | _ \ |_ _|
\___ \ | | / _ \ | |_) | | |
___) | | | / ___ \ | _ < | |
|____/ |_| /_/ \_\ |_| \_\ |_|
Build your first network (BYFN) end-to-end test
Channel name : mychannel
+ peer channel create -o orderer.example.com:7050 -c mychannel -f ./channel-artifacts/channel.tx --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
Creating channel...
+ res=1
+ set +x
Error: failed to create deliver client: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded
!!!!!!!!!!!!!!! Channel creation failed !!!!!!!!!!!!!!!!
========= ERROR !!! FAILED to execute End-2-End Scenario ===========
ERROR !!!! Test failed
问题的根源是什么？我应该如何解决？
Error: failed to create deliver client: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded
此错误表明对等点无法解析/连接到 orderer.example.com:7050 。尝试通过以下方式检查所有容器
docker ps -a
这将向您显示所有正在运行的容器和已退出的容器，您可以通过以下方式检查容器日志
docker logs your_container_name
如果您以前的容器在同一网络中运行或停止，并且您忘记将其删除，则也可能会发生这种情况，因此您可以尝试关闭整个网络，然后重新启动。
./byfn.sh down
./byfn.sh up
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