此文档所在环境是版本hyperledger fabric1.4.0，在fabric中添加组织机构，核心分为三步，第一步生成新增org的组织机构的证书，第二步修改channel的配置块并更新，第三步编写docker-compose文件，下载镜像启动节点，如需视频学习，可以参考视频教程。

生成证书

cd org3-artifacts
../../bin/cryptogen generate --config=./org3-crypto.yaml

修改配置块

生成org3的json字符串
export FABRIC_CFG_PATH=$PWD && ../../bin/configtxgen -printOrg Org3MSP > ../channel-artifacts/org3.json
拷贝order证书到org3目录下
cd ../ && cp -r crypto-config/ordererOrganizations org3-artifacts/crypto-config/
docker exec -it cli bash
export ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem  && export CHANNEL_NAME=mychannel

获取mychannel的配置区块
peer channel fetch config config_block.pb -o orderer.example.com:7050 -c $CHANNEL_NAME --tls --cafile $ORDERER_CA

转为json
configtxlator proto_decode --input config_block.pb --type common.Block | jq .data.data[0].payload.data.config > config.json

将org3加入到此json中
jq -s '.[0] * {"channel_group":{"groups":{"Application":{"groups": {"Org3MSP":.[1]}}}}}' config.json ./channel-artifacts/org3.json > modified_config.json

转为pb
configtxlator proto_encode --input config.json --type common.Config --output config.pb

转为pb
configtxlator proto_encode --input modified_config.json --type common.Config --output modified_config.pb

计算pb之间的增量
configtxlator compute_update --channel_id $CHANNEL_NAME --original config.pb --updated modified_config.pb --output org3_update.pb

转为json
configtxlator proto_decode --input org3_update.pb --type common.ConfigUpdate | jq . > org3_update.json

加入header信息
echo '{"payload":{"header":{"channel_header":{"channel_id":"mychannel", "type":2}},"data":{"config_update":'$(cat org3_update.json)'}}}' | jq . > org3_update_in_envelope.json

转为pb
configtxlator proto_encode --input org3_update_in_envelope.json --type common.Envelope --output org3_update_in_envelope.pb

新增org3需要此channel里面的大多数组织机构签名同意，也就是超过50%

org1签名
peer channel signconfigtx -f org3_update_in_envelope.pb

切换到org2签名
export CORE_PEER_LOCALMSPID="Org2MSP"
export CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt
export CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp
export CORE_PEER_ADDRESS=peer0.org2.example.com:7051

上传新配置
peer channel update -f org3_update_in_envelope.pb -c $CHANNEL_NAME -o orderer.example.com:7050 --tls --cafile $ORDERER_CA

编写compose文件

编写docker-compose文件（官方first-network有，可以照着改为自己新增的org4，org5…………）
docker-compose -f docker-compose-org3.yaml up -d
进入容器
docker exec -it Org3cli bash
export ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem && export CHANNEL_NAME=mychannel

获取第0个区块
peer channel fetch 0 mychannel.block -o orderer.example.com:7050 -c $CHANNEL_NAME --tls --cafile $ORDERER_CA

加入到channel里边
peer channel join -b mychannel.block

切换到另一peer
export CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org3.example.com/peers/peer1.org3.example.com/tls/ca.crt && export CORE_PEER_ADDRESS=peer1.org3.example.com:7051

加入到channel里边
peer channel join -b mychannel.block

配置锚节点（可选）
peer channel fetch config config_block.pb -o orderer.example.com:7050 -c mychannel --tls --cafile $ORDERER_CA

configtxlator proto_decode --input config_block.pb --type common.Block | jq .data.data[0].payload.data.config > config.json

jq '.channel_group.groups.Application.groups.Org3MSP.values += {"AnchorPeers":{"mod_policy": "Admins","value":{"anchor_peers": [{"host": "peer0.org3.example.com","port": 11051}]},"version": "0"}}' config.json > modified_anchor_config.json

configtxlator proto_encode --input config.json --type common.Config --output config.pb

configtxlator proto_encode --input modified_anchor_config.json --type common.Config --output modified_anchor_config.pb

configtxlator compute_update --channel_id $CHANNEL_NAME --original config.pb --updated modified_anchor_config.pb --output anchor_update.pb

configtxlator proto_decode --input anchor_update.pb --type common.ConfigUpdate | jq . > anchor_update.json

echo '{"payload":{"header":{"channel_header":{"channel_id":"mychannel", "type":2}},"data":{"config_update":'$(cat anchor_update.json)'}}}' | jq . > anchor_update_in_envelope.json

configtxlator proto_encode --input anchor_update_in_envelope.json --type common.Envelope --output anchor_update_in_envelope.pb

peer channel update -f anchor_update_in_envelope.pb -c mychannel -o orderer.example.com:7050 --tls --cafile $ORDERER_CA