This presentation helps to establish multi peer Hyperledger fabric connection on different hosts . For more information and tutorials https://www.youtube.com/edit?o=U&video_id=EvICyArbFSs www.rihusoft.com

1. Multi Peer HyperLedger Fabric
Network On Multiple Hosts

2. Peer To Peer Network
 Hyperledger fabric is decentralized network, It works with various set of components.
 Each of these will be running on it’s own docker instances.
 Each Component can be configured to communicate with each other.
 These Docker instances even when running on multiple physical machines, can still communicate
with each other.
 Every peer maintains a copy of the ledger.
 Every transaction is validated by orderer and then added in to the ledger.
 Peers in the same network are always in sync.

3. Prerequisites:
 Docker - version 17.03.0-ce or greater
 Docker Compose - version 1.8 or greater
 Node.js - version 6.9. or greater
 NPM – version 3.10.10.
 Go – 1.7x / JDK.
 Hyperledger Fabric platform-specific binaries.
• Cryptogen.
• configtxgen,
• configtxlator,
• peer
 Download the Docker images required for Fabric.

4. MultiPeer Setup
 Generate certificates in one host and share them to all
other connected machines.
 Every host should contain same certificates.
 Run the related containers in every machine.
 Every host may contains one or more peers based on
the running containers, and atleast one orderer in any
one of the host.
 All containers must be run in the same channel.
 Ordering service provides a shared communication
channel to peers.
 Peers can additionally take up a special role of an
endorsing peer, or an endorser.
 Every peer receives ordered state updates in the form
of blocks from the ordering service and maintain the
state and the ledger.

5. Running containers in host1 :
Running containers in host2 :

6. CouchDB as the State Database
 Couchdb is a document oriented databse.
 Most of the chaincode shim APIs can be utilized with either couchdb or leveldb.
 Both leveldb and couchdb supports core chain code operations such as getting and
setting a key(asset), and querying based on keys.
 Couchdb enabled as the state satabse by adding the state database configuration as
couchdb.
 Couchdb runs as the separate database for every peer.

7. CouchDB

8. References
● https://discourse.skcript.com/t/setting-up-a-blockchain-business-network-with-hyperledger-
● https://hyperledger-fabric.readthedocs.io/en/release/
● https://www.youtube.com/edit?o=U&video_id=EvICyArbFSs