为RAFT应用程序通道设置订购者的子集

Question

我正在尝试使用first-network中的fabric-samples创建一个应用程序通道。

1. 我正在创建部署以运行在RAFT集群中运行的4个订购节点。以下是用于在configtx.yaml文件中创建Orderer Genesis块的配置文件部分。

   SampleMultiNodeEtcdRaft
       <<: *ChannelDefaults
       Capabilities:
       <<: *ChannelCapabilities
       Orderer:
           <<: *OrdererDefaults
           OrdererType: etcdraft
           EtcdRaft:
               Consenters:
               - Host: orderer.example.com
                 Port: 7050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/server.crt
               - Host: orderer2.example.com
                 Port: 8050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer2.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer2.example.com/tls/server.crt
               - Host: orderer3.example.com
                 Port: 9050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer3.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer3.example.com/tls/server.crt
               - Host: orderer4.example.com
                 Port: 10050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer4.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer4.example.com/tls/server.crt
           Addresses:
               - orderer.example.com:7050
               - orderer2.example.com:8050
               - orderer3.example.com:9050
               - orderer4.example.com:10050
           Organizations:
           - *OrdererOrg
           Capabilities:
               <<: *OrdererCapabilities
       Application:
           <<: *ApplicationDefaults
           Organizations:
           - <<: *OrdererOrg
       Consortiums:
           SampleConsortium:
               Organizations:
               - *Org1
               - *Org2
   

2. 现在，我想创建一个仅具有3个订购节点（在给定4个订购节点中）的应用程序通道：orderer, orderer2, orderer3。因此，我将应用程序通道的配置文件部分设置如下（在configtx.yaml文件中）：

   TwoOrgsChannel:
       Consortium: SampleConsortium
       <<: *ChannelDefaults
       Capabilities:
           <<: *ChannelCapabilities
       Orderer:
           <<: *OrdererDefaults
           OrdererType: etcdraft
           EtcdRaft:
               Consenters:
               - Host: orderer.example.com
                 Port: 7050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/server.crt
               - Host: orderer2.example.com
                 Port: 8050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer2.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer2.example.com/tls/server.crt
               - Host: orderer3.example.com
                 Port: 9050
                 ClientTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer3.example.com/tls/server.crt
                 ServerTLSCert: crypto-config/ordererOrganizations/example.com/orderers/orderer3.example.com/tls/server.crt
           Addresses:
               - orderer.example.com:7050
               - orderer2.example.com:8050
               - orderer3.example.com:9050
           Organizations:
               - *OrdererOrg
           Capabilities:
               <<: *OrdererCapabilities
       Application:
           <<: *ApplicationDefaults
           Organizations:
               - *Org1
               - *Org2
           Capabilities:
               <<: *ApplicationCapabilities
   

3. 我正在使用默认的byfn.sh脚本来启动网络。

但是但是当我尝试使用cli环境从orderer4容器中获取应用程序通道配置块时，我能够成功完成并将其解码为JSON文件的过程，我可以看到所有4个订购者都是一部分应用程序通道的[[consenters部分中的每个地址，以及每个订购者的地址都位于orderer address部分中。

所以，为什么只给前三个订购者作为同意者，申请渠道却不是仅从前三个订购者开始？

Answer 1

通道创建命令中必须包含-channelCreateTxBaseProfile参数，并且该参数的值将是订购者的创始简档名称（此处为SampleMultiNodeEtcdRaft）。

此外，尝试执行peer channel create命令的标识必须满足以下ACL：/Channel/Orderer/ConsensusType（默认情况下设置为以下策略：/Channel/Application/Admins）。