Hyperledger Fabric 踩坑汇总

1.搭建基础环境

阿里云安装出现的一些问题解决

1. [signal SIGSEGV: segmentation violation code=0x1 addr=xxx pc=xxx] 类似的错误:原始错误的代码(来自peer节点):

2020-02-09 22:43:43.665 CST [couchdb] handleRequest -> WARN 016 Retrying couchdb request in 125ms. Attempt:1  Error:Get http://couchdb:5984/: dial tcp 172.18.0.4:5984: getsockopt: connection refused
2020-02-09 22:43:43.790 CST [couchdb] handleRequest -> DEBU 017 HTTP Request: GET / HTTP/1.1 | Host: couchdb:5984 | User-Agent: Go-http-client/1.1 | Accept: multipart/related | Accept-Encoding: gzip |  |
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x63 pc=0x7f17e8243259]

runtime stack:
runtime.throw(0xf11259, 0x2a)
        /opt/go/src/runtime/panic.go:605 +0x95
runtime.sigpanic()
        /opt/go/src/runtime/signal_unix.go:351 +0x2b8

goroutine 88 [syscall, locked to thread]:
runtime.cgocall(0xbf3800, 0xc42028fac8, 0xf0fa21)

修改自己阿里云ecs机器里面的/etc/resolv.conf，把里面的 options timeout:2 attempts:3 rotate single-request-reopen 这一行内容注释掉 :解决方法:

例如我的/etc/resolv.conf :

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 100.100.2.136
nameserver 100.100.2.138
#options timeout:2 attempts:3 rotate single-request-reopen

原因解析:然后问题就解决了

这个问题是出在go的DNS解析问题，由于go的Resolver不支持options single-request-reopen从而走了CGO Resolver方法导致失败了，因此只需要把/etc/resolv.conf里面的single-request-reopen这一行注释掉即可

参考为什么通过CGO Resolver失败的原因: Static Cgo Builds, What Could Go Wrong?

2.禁止访问

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

Channel name : mychannel
Creating channel...
+ 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
+ res=1
+ set +x
2020-02-10 05:29:16.805 UTC [channelCmd] InitCmdFactory -> INFO 001 Endorser and orderer connections initialized
Error: got unexpected status: FORBIDDEN -- implicit policy evaluation failed - 0 sub-policies were satisfied, but this policy requires 1 of the 'Writers' sub-policies to be satisfied: permission denied
!!!!!!!!!!!!!!! Channel creation failed !!!!!!!!!!!!!!!!
========= ERROR !!! FAILED to execute End-2-End Scenario ===========

ERROR !!!! Test failed

查看一下orderer的日志，看清楚它到底是具体的哪一个部分有问题，看到大多数的问题在于：

报错信息：

2020-02-10 05:29:15.706 UTC [nodeCmd] serve -> INFO 01e Started peer with ID=[name:"peer0.org1.example.com" ], network ID=[dev], address=[peer0.org1.example.com:7051]
2020-02-10 05:29:15.706 UTC [kvledger] LoadPreResetHeight -> INFO 01f Loading prereset height from path [/var/hyperledger/production/ledgersData/chains]
2020-02-10 05:29:15.706 UTC [fsblkstorage] LoadPreResetHeight -> INFO 020 Loading Pre-reset heights
2020-02-10 05:29:15.706 UTC [fsblkstorage] preRestHtFiles -> INFO 021 Dir [/var/hyperledger/production/ledgersData/chains/chains] missing... exiting
2020-02-10 05:29:15.706 UTC [fsblkstorage] LoadPreResetHeight -> INFO 022 Pre-reset heights loaded
2020-02-10 05:29:15.706 UTC [nodeCmd] func7 -> INFO 023 Starting profiling server with listenAddress = 0.0.0.0:6060
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x63 pc=0x7f67665ee259]

错误原因：没有删除干净的环境中启动复用的之前的volume
解决方案：执行如下命令删除卷

docker-compose -f docker-compose-cli.yaml down --volumes --remove-orphans
docker rm -f $(docker ps -a | grep "hyperledger/*" | awk "{print $1}")
docker volume prune

 3.orderer节点无法启动

2020-02-11 09:20:13.057 UTC [orderer.common.server] Start -> PANI 003 Failed validating bootstrap block: initializing channelconfig failed: 
could not create channel Orderer sub-group config: setting up the MSP manager failed: the supplied identity is not valid: x509: certificate signed by unknown authority
panic: Failed validating bootstrap block: initializing channelconfig failed: 
could not create channel Orderer sub-group config: setting up the MSP manager failed: the supplied identity is not valid: x509: certificate signed by unknown authority

错误原因：之前搭建过网络没清除干净

解决方法：清除网络重新再来

./byfn.sh -m down

 4.链码实例化失败

情况1

报错信息：

root@f36b56f939d7:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode instantiate -o orderer.example.com:7050 --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 -C $CHANNEL_NAME -n mycc -l node -v 1.0 -c '{"Args":["init","a", "100", "b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"
2020-02-11 15:33:28.712 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
2020-02-11 15:33:28.712 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc
Error: could not assemble transaction, err proposal response was not successful, error code 500, msg chaincode registration failed: timeout expired while starting chaincode mycc:1.0 for transaction

或者一直卡在这里

root@d44eb17e9375:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode instantiate -o orderer.example.com:7050 --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 -C $CHANNEL_NAME -n mycc -l node -v 1.0 -c '{"Args":["init","a", "100", "b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')"
2020-02-13 13:02:25.792 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 001 Using default escc
2020-02-13 13:02:25.792 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 002 Using default vscc

错误原因：

因为防火墙的原因node无法下载部分依赖包

解决方法：

 设置你的网络挂载VPN或者用其他语言（Go/Java）链码

情况2

Error: could not assemble transaction, err proposal response was not successful, error code 500, msg error starting container: error starting container: API error (404): network _byfn not found
!!!!!!!!!!!!!!! Chaincode instantiation on peer0.org2 on channel 'mychannel' failed !!!!!!!!!!!!!!!!
========= ERROR !!! FAILED to execute End-2-End Scenario ===========

 5.无法创建一个带有私有数据的弹珠

错误信息

输入

export MARBLE=$(echo -n "{"name":"marble1","color":"blue","size":35,"owner":"tom","price":99}" | base64 | tr -d 
) 
peer chaincode invoke -o orderer.example.com:7050 --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n marblesp -c '{"Args":["initMarble"]}' --transient "{"marble":"$MARBLE"}"

输出

root@451d8e400f25:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode invoke -o orderer.example.com:7050 --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 -C mychannel -n marblesp -c '{"Args":["initMarble"]}' --transient "{"marble":"$MARBLE"}"
Error: error parsing transient string: invalid character 'm' looking for beginning of object key string - proposal response: <nil>

错误原因

 未进行转义

解决方法

 输入

root@451d8e400f25:/opt/gopath/src/github.com/hyperledger/fabric/peer# export MARBLE=$(echo -n "{"name":"marble1","color":"blue","size":35,"owner":"tom","price":99}" | base64 | tr -d \n)
root@451d8e400f25:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer chaincode invoke -o orderer.example.com:7050 --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n marblesp -c '{"Args":["initMarble"]}' --transient "{"marble":"$MARBLE"}"

成功

2020-02-14 05:42:59.621 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200

 6.tools无法启动

 错误信息

Error: got unexpected status: BAD_REQUEST -- error applying config update to existing channel 'myc': error authorizing update: error validating ReadSet: proposed update requires that key [Group]  /Channel/Application be at version 0, but it is currently at version 1

错误原因

未将网络清理干净

解决方法：具体结合自己文件清理

docker-compose -f docker-compose-cli.yaml down --volumes --remove-orphans
docker rm -f $(docker ps -a | grep "hyperledger/*" | awk "{print $1}")
docker volume prune

 7.采用kafka共识无法创建管道

错误信息

代码

// the bug is located in fabric source code file: fabric/orderer/kafka/retry.go
func (rp *retryProcess) try(interval, total time.Duration) error {
    // ... some code removed
    tickInterval := time.NewTicker(interval)
    tickTotal := time.NewTicker(total)
    defer tickTotal.Stop()
    defer tickInterval.Stop()
    logger.Debugf("[channel: %s] Retrying every %s for a total of %s", rp.channel.topic(), interval.String(), total.String())

    for {
        select {
        case <-rp.exit:
            exitErr := fmt.Errorf("[channel: %s] process asked to exit", rp.channel.topic())
            logger.Warning(exitErr.Error()) // Log it at the warning level
            return exitErr
        case <-tickTotal.C:
            return err
        case <-tickInterval.C:
            logger.Debugf("[channel: %s] "+rp.msg, rp.channel.topic())
            if err = rp.fn(); err == nil {
                logger.Debugf("[channel: %s] Error is nil, breaking the retry loop", rp.channel.topic())
                return err
            }
        }
    }
}

错误原因

卡夫卡未能连接，未将网络清理干净

解决方法：

./byfn.sh -m down