在first-network里，./byfn.sh generate可以生成artifacts文件。
generate参数其实是使用了cryptogen和configtxgen这两个工具，这两个工具分别生成不同的artifacts文件。
这里主要介绍详细介绍这两个工具的配置。
1， cryptogen
../bin/cryptogen generate --config=./crypto-config.yaml
执行成功之后会显示
org1.example.com
org2.example.com
cryptogen工具生成了crypto-config文件夹，这个文件包含了各个节点的证书。
这些文件在以后我们都会用到。
创建Channel的config transaction
export CHANNEL_NAME=mychannel && ../bin/configtxgen -profile TwoOrgsChannel -outputCreateChannelTx ./channel-artifacts/channel.tx -channelID $CHANNEL_NAME
然后得到如下输出
2018-05-11 14:46:57.861 CST [common/tools/configtxgen] main -> INFO 001 Loading configuration
2018-05-11 14:46:57.869 CST [common/tools/configtxgen] doOutputChannelCreateTx -> INFO 002 Generating new channel configtx
2018-05-11 14:46:57.974 CST [msp] getMspConfig -> INFO 003 Loading NodeOUs
2018-05-11 14:46:57.996 CST [msp] getMspConfig -> INFO 004 Loading NodeOUs
2018-05-11 14:46:58.042 CST [common/tools/configtxgen] doOutputChannelCreateTx -> INFO 005 Writing new channel tx
指定Anchor节点
../bin/configtxgen -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org1MSPanchors.tx -channelID $CHANNEL_NAME -asOrg Org1MSP
../bin/configtxgen -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org2MSPanchors.tx -channelID $CHANNEL_NAME -asOrg Org2MSP
然后得到如下输出
2018-05-11 14:49:52.061 CST [common/tools/configtxgen] main -> INFO 001 Loading configuration
2018-05-11 14:49:52.079 CST [common/tools/configtxgen] doOutputAnchorPeersUpdate -> INFO 002 Generating anchor peer update
2018-05-11 14:49:52.079 CST [common/tools/configtxgen] doOutputAnchorPeersUpdate -> INFO 003 Writing anchor peer update
