在 Hyperledger Fabric 中，如果无法使用 peer channel fetch 命令，如何加入频道？

Question

我希望能够让我的同伴加入一个频道（在这种情况下是 mychannel）。该特定对等方mychannel.block在其文件系统上没有该文件。

然后我尝试的是使用peer channel fetch 0 -c mychannel. 然后我收到以下错误：

2019-01-15 08:11:18.948 UTC [msp] Validate -> DEBU 036 MSP ZafitMSP validating identity
2019-01-15 08:11:18.949 UTC [msp] GetDefaultSigningIdentity -> DEBU 037 Obtaining default signing identity
2019-01-15 08:11:18.949 UTC [grpc] DialContext -> DEBU 038 parsed scheme: ""
2019-01-15 08:11:18.949 UTC [grpc] DialContext -> DEBU 039 scheme "" not registered, fallback to default scheme
2019-01-15 08:11:18.949 UTC [grpc] watcher -> DEBU 03a ccResolverWrapper: sending new addresses to cc: [{peer1.zafit.example.com:7051 0  <nil>}]
2019-01-15 08:11:18.949 UTC [grpc] switchBalancer -> DEBU 03b ClientConn switching balancer to "pick_first"
2019-01-15 08:11:18.950 UTC [grpc] HandleSubConnStateChange -> DEBU 03c pickfirstBalancer: HandleSubConnStateChange: 0xc4202b78d0, CONNECTING
2019-01-15 08:11:18.952 UTC [grpc] HandleSubConnStateChange -> DEBU 03d pickfirstBalancer: HandleSubConnStateChange: 0xc4202b78d0, READY
2019-01-15 08:11:18.953 UTC [channelCmd] InitCmdFactory -> INFO 03e Endorser and orderer connections initialized
2019-01-15 08:11:18.953 UTC [msp] GetDefaultSigningIdentity -> DEBU 03f Obtaining default signing identity
2019-01-15 08:11:18.953 UTC [msp] GetDefaultSigningIdentity -> DEBU 040 Obtaining default signing identity
2019-01-15 08:11:18.953 UTC [msp/identity] Sign -> DEBU 041 Sign: plaintext: 0AF2060A1508051A0608A6ABF6E10522...1BB3248E4BFA12080A021A0012021A00
2019-01-15 08:11:18.953 UTC [msp/identity] Sign -> DEBU 042 Sign: digest: C8988576954088FD1A61D6D4FFA7A7280E52F10B2F2671693C260B54B09F3B89
2019-01-15 08:11:18.954 UTC [cli/common] readBlock -> INFO 043 Got status: &{NOT_FOUND}

但是，当我mychannel.block从另一个对等方复制文件时，我能够mychannel成功加入。peer channel fetch加入频道后，该命令也可以成功运行。

对我来说，这似乎是先有鸡还是先有蛋的场景，我需要以同级身份加入频道，但我无法加入，因为我需要创世区块。但是我无法获得创世区块，因为我需要加入频道？

所以问题是检索创世mychannel.block文件的适当命令是什么？

Answer 1

原来我需要添加 orderer 参数-o。此外，由于我使用 TLS 连接，因此我需要指定--tls true以及指定--cafile.

完整命令如下：？

peer channel fetch 0 -c mychannel -o orderer.example.com:7050 --tls true --cafile $ORDERER_CA