Hyperledger Fabric：在运行 raft 网络中添加 Orderer

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【中文标题】Hyperledger Fabric：在运行 raft 网络中添加 Orderer【英文标题】：Hyperledger Fabric: Add Orderer in running raft network 【发布时间】：2020-04-24 19:58:39 【问题描述】：

我想在一个正在运行的 hyperledger-fabric 网络中添加一个新的 orderer 节点。我使用 etcdraft 作为订购者之间的共识。

我已经按照this accepted answer 的逐步流程进行了操作。在第 15 步中提到，我必须从 系统通道 获取最新的 config 块并将此块用作 genesis新订购服务的块。

所以，我已将 config 块复制到 channel-artifacts 文件夹 [文件名：config_block.pb]，然后旋转使用 docker-compose.yaml 文件创建一个新容器。作为参考，我在此处发布 docker-compose.yaml 文件：

version: '2'

volumes:
  orderer6.example.com:

networks:
  byfn:

services:

  orderer6.example.com:
    image: hyperledger/fabric-orderer:latest
    environment:
      - FABRIC_LOGGING_SPEC=INFO
      - ORDERER_GENERAL_LISTENADDRESS=0.0.0.0
      - ORDERER_GENERAL_GENESISMETHOD=file
      - ORDERER_GENERAL_GENESISFILE=/var/hyperledger/orderer/orderer.genesis.block
      - ORDERER_GENERAL_LOCALMSPID=OrdererMSP
      - ORDERER_GENERAL_LOCALMSPDIR=/var/hyperledger/orderer/msp
      # enabled TLS
      - ORDERER_GENERAL_TLS_ENABLED=true
      - ORDERER_GENERAL_TLS_PRIVATEKEY=/var/hyperledger/orderer/tls/server.key
      - ORDERER_GENERAL_TLS_CERTIFICATE=/var/hyperledger/orderer/tls/server.crt
      - ORDERER_GENERAL_TLS_ROOTCAS=[/var/hyperledger/orderer/tls/ca.crt]
      - ORDERER_KAFKA_TOPIC_REPLICATIONFACTOR=1
      - ORDERER_KAFKA_VERBOSE=true
      - ORDERER_GENERAL_CLUSTER_CLIENTCERTIFICATE=/var/hyperledger/orderer/tls/server.crt
      - ORDERER_GENERAL_CLUSTER_CLIENTPRIVATEKEY=/var/hyperledger/orderer/tls/server.key
      - ORDERER_GENERAL_CLUSTER_ROOTCAS=[/var/hyperledger/orderer/tls/ca.crt]
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric
    command: orderer
    container_name: orderer6.example.com
    networks:
    - byfn
    volumes:
        - ./channel-artifacts/config_block.pb:/var/hyperledger/orderer/orderer.genesis.block
        - ./crypto-config/ordererOrganizations/example.com/orderers/orderer6.example.com/msp:/var/hyperledger/orderer/msp
        - ./crypto-config/ordererOrganizations/example.com/orderers/orderer6.example.com/tls/:/var/hyperledger/orderer/tls
        - orderer6.example.com:/var/hyperledger/production/orderer
    ports:
    - 13050:7050

最后，我正在运行排序服务：

docker-compose -f orderer6.yaml up

容器启动并在几秒钟后崩溃。容器的日志文件显示：

orderer6.example.com    | 2020-01-07 09:03:12.363 UTC [orderer.common.cluster.replication] obtainStream -> INFO 03f Sending request for block [2] to orderer.example.com:7050
orderer6.example.com    | 2020-01-07 09:03:12.365 UTC [orderer.common.cluster.replication] pullBlocks -> INFO 040 Got block [2] of size 47 KB from orderer.example.com:7050
orderer6.example.com    | 2020-01-07 09:03:12.377 UTC [orderer.common.cluster] appendBlock -> PANI 041 Failed to write block [2]: unexpected Previous block hash. Expected PreviousHash = [1c99accab83de7a415061120831519badf4807c97a0195ab5f42bab979a7dc09], PreviousHash referred in the latest block= [37f11444fb0b1ca51419b5f1a95fab616d5179ed44a87716677f1b706c0b1854]
orderer6.example.com    | panic: Failed to write block [2]: unexpected Previous block hash. Expected PreviousHash = [1c99accab83de7a415061120831519badf4807c97a0195ab5f42bab979a7dc09], PreviousHash referred in the latest block= [37f11444fb0b1ca51419b5f1a95fab616d5179ed44a87716677f1b706c0b1854]
orderer6.example.com    | 
orderer6.example.com    | goroutine 1 [running]:
orderer6.example.com    | github.com/hyperledger/fabric/vendor/go.uber.org/zap/zapcore.(*CheckedEntry).Write(0xc00014db80, 0x0, 0x0, 0x0)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/vendor/go.uber.org/zap/zapcore/entry.go:229 +0x546
orderer6.example.com    | github.com/hyperledger/fabric/vendor/go.uber.org/zap.(*SugaredLogger).log(0xc000010a58, 0xc00004ae04, 0x1548ed8, 0x1e, 0xc00030b458, 0x2, 0x2, 0x0, 0x0, 0x0)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/vendor/go.uber.org/zap/sugar.go:234 +0x101
orderer6.example.com    | github.com/hyperledger/fabric/vendor/go.uber.org/zap.(*SugaredLogger).Panicf(...)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/vendor/go.uber.org/zap/sugar.go:159
orderer6.example.com    | github.com/hyperledger/fabric/common/flogging.(*FabricLogger).Panicf(...)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/common/flogging/zap.go:74
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/cluster.(*Replicator).appendBlock(0xc000089bc0, 0xc0002e4a80, 0x16b8760, 0xc00068d0e0, 0xc000571f60, 0x10)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/cluster/replication.go:253 +0x283
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/cluster.(*Replicator).pullChannelBlocks(0xc000089bc0, 0xc000571f60, 0x10, 0xc00053e2a0, 0x3, 0x16b8760, 0xc00068d0e0, 0x0, 0x0)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/cluster/replication.go:221 +0xd8
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/cluster.(*Replicator).PullChannel(0xc000089bc0, 0xc000571f60, 0x10, 0x0, 0x0)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/cluster/replication.go:207 +0x411
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/cluster.(*Replicator).ReplicateChains(0xc000089bc0, 0xc00030ba88, 0x1, 0x1)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/cluster/replication.go:163 +0x3ed
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/server.(*replicationInitiator).replicateNeededChannels(0xc000214180, 0xc00011ce00)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/server/onboarding.go:102 +0x19a
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/server.(*replicationInitiator).replicateIfNeeded(0xc000214180, 0xc00011ce00)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/server/onboarding.go:48 +0x9a
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/server.Start(0x15309fe, 0x5, 0xc000394900)
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/server/main.go:124 +0x11c8
orderer6.example.com    | github.com/hyperledger/fabric/orderer/common/server.Main()
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/common/server/main.go:91 +0x208
orderer6.example.com    | main.main()
orderer6.example.com    |   /opt/gopath/src/github.com/hyperledger/fabric/orderer/main.go:15 +0x20
orderer6.example.com exited with code 2

orderer的详细日志在here。

我的方法有什么问题？我使用 byfn 网络作为我的测试平台，运行：

./byfn up -o etcdraft

【问题讨论】：

【参考方案1】：

安装到新排序容器的卷存在问题。它正在为新订购者使用现有卷，因为可能您一直在拉下“byfn.sh”脚本并再次使用它来启动网络。

转到用于启动新排序节点的docker-compose 文件。检查文件顶部的 volumes 部分以及实际安装它的容器定义：

volumes: orderer6.example.com:

和

- orderer6.example.com:/var/hyperledger/production/orderer.

将正在创建和挂载的卷的名称更改为全新的名称。官方documentation 中提到的每一步都可以正常工作。

【讨论】：

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