在哪里可以找到Hyperledger Fabric对等命令的可能环境变量? [英] Where can I find out the possible environment variables for Hyperledger Fabric peer command?

问题描述

在配置要运行的对等节点时，示例docker-compose文件中包含许多环境变量.我可以找到所有记录在案的地方吗?

When configuring a peer node to run, there are a number of environment variables included in the sample docker-compose files. Is there somewhere that I can find them all documented?

例如

environment:
  - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
  - CORE_PEER_ID=peer0.org1.example.com
  - CORE_LOGGING_PEER=debug
  - CORE_CHAINCODE_LOGGING_LEVEL=DEBUG
  - CORE_PEER_LOCALMSPID=Org1MSP
  - CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/peer/
  - CORE_PEER_ADDRESS=peer0.org1.example.com:7051

推荐答案

Hyperledger Fabric提供了一个名为 core.yaml 的配置文件，您可以在对等容器中找到在/etc/hyperledger/fabric/

Hyperledger Fabric provides a configuration file called core.yaml, you can find that inside the peer container on folder /etc/hyperledger/fabric/

Fabric使用 Viper 作为配置框架，该框架提供了按环境覆盖配置文件值的功能变量.基本上，它初始化如下:

Fabric uses Viper as configuration framework, which provides an ability to override values of configuration files by environmental variables. Basically it initialized as following:

// used to prefix config keys to prevent possible collisions
viper.SetEnvPrefix("core") 

// enforces to check values configured via environmental variables first
viper.AutomaticEnv()

这使得毒蛇可以在以CORE字符串为前缀的环境变量中寻找所有配置密钥.

This makes viper to seek for all configuration key among environmental variables prefixed by CORE string.

现在，例如，如果我们看一下样本配置中的对等部分(已更新):

Now if for example we take a look on peer section (updated) within sample config:

peer:            
    id: jdoe            
    networkId: dev    
    listenAddress: 0.0.0.0:7051    
    address: 0.0.0.0:7051

可以通过导出适当的环境变量来覆盖这些值中的任何一个，例如对等网络ID:

any of these value could be overridden by exporting proper environmental variable, for instance peer network id:

export CORE_PEER_NETWORKID=mypeerID

Same也适用于其他部分，例如，如果我们想控制不同组件的日志记录级别:

Same also works for other sections, for example if we would like to control logging level of different components:

logging:

    peer:       info
    cauthdsl:   warning
    gossip:     warning
    ledger:     info
    msp:        warning
    policies:   warning
    grpc: error

要使msp组件记录调试级别消息，我们需要导出以下变量:

To make msp component to log debug level message we need to export following variable:

export PEER_LOGGING_MSP=debug

请注意，只有在对等启动之前将其导出，此选项才会生效.

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