CouchDB Container Used in Hyperledger Fabric

Q

What is the CouchDB container used in Hyperledger Fabric network?

✍: FYIcenter.com

A

If you are using CouchDB instead of Go LevelDB, your Hyperledger Fabric network will have another type of containers:

5. CouchDB container - There is one CouchDB container connected to a peer. Each CouchDB stores the World State for the peer.

If you deploy the sample network BYFN (Building Your First Network) with the couchdb database option, you will see 5 types of docker containers running on a single Docker Engine:

$ byfn.sh up -c mychannel -s couchdb

$ docker ps --all 

IMAGE                                      COMMAND               NAMES
                                         
hyperledger/fabric-orderer:latest          orderer               orderer.example.com
hyperledger/fabric-peer:latest             peer node start       peer0.org2.example.com
hyperledger/fabric-peer:latest             peer node start       peer1.org1.example.com
hyperledger/fabric-peer:latest             peer node start       peer0.org1.example.com
hyperledger/fabric-peer:latest             peer node start       peer1.org2.example.com
hyperledger/fabric-couchdb                 tini -- /docker-entâ€¦  couchdb1
hyperledger/fabric-couchdb                 tini -- /docker-entâ€¦  couchdb3
hyperledger/fabric-couchdb                 tini -- /docker-entâ€¦  couchdb2
hyperledger/fabric-couchdb                 tini -- /docker-entâ€¦  couchdb0
dev-peer1.org2.example.com-mycc-1.0-ccc3â€¦  chaincode -peer.addâ€¦  dev-peer1.org2.example.com-mycc-1.0
dev-peer0.org1.example.com-mycc-1.0-7782â€¦  chaincode -peer.addâ€¦  dev-peer0.org1.example.com-mycc-1.0
dev-peer0.org2.example.com-mycc-1.0-6109â€¦  chaincode -peer.addâ€¦  dev-peer0.org2.example.com-mycc-1.0
hyperledger/fabric-tools:latest            /bin/bash"            cli

Hyperledger Fabric Docker Containers with CouchDB

Â

â‡’ Peer and CouchDB Container Dependency

â‡ Invoke Operation on Chaincode Container

â‡‘ Hyperledger Fabric Docker Containers

â‡‘â‡‘ Hyperledger Tutorials

2020-07-03, 1076👍, 1💬

Watch "orderer" Container Log
How to watch the log file of the "orderer" Container? The "orderer" Container plays an important role in a Hyperledger Fabric network. You can follow this tutorial to watch its log file: 1. Set up a new terminal on the hosting system to follow the log file of the "orderer" container: $ docker logs -... 2020-07-07, 1165👍, 0💬

CouchDB Container Used in Hyperledger Fabric
What is the CouchDB container used in Hyperledger Fabric network? If you are using CouchDB instead of Go LevelDB, your Hyperledger Fabric network will have another type of containers: 5. CouchDB container - There is one CouchDB container connected to a peer. Each CouchDB stores the World State for t... 2020-07-03, 1077👍, 1💬

Watch Chaincode Container Log
How to watch the log file of chaincode Container Log? You can follow this tutorial to watch the log file of a chaincode container: 1. Set up new terminal on the hosting system to follow the log file of the chaincode container linked to "peer0.org1": $ docker ps --all | grep dev-peer0.org1 cc7aeb60bb... 2020-06-08, 983👍, 0💬

Member Peers of a Channel
How to find out which Peers are members of the "mychannel" channel? One way to find out which Peers are members of the "mychannel" channel is to visit each peers and check their joined channel list: 1. Connect to the CLI container: $ docker exec -it cli bash bash-4.4# 2. Check joined channel list on... 2020-05-29, 874👍, 0💬

Watch Peer Container Log
How to watch the log file of Peer Container Log? You can follow this tutorial to watch the log file of a peer container: 1. Set up a new terminal on the hosting system to follow the log file of the "peer0.org1.example.com" container: $ docker logs --tail 10 -f peer0.org1.example.com [gossip.comm] fu... 2020-07-07, 861👍, 0💬

Not All Member Peers Run Chaincode
How to find out which member peers are running a given chaincode? When a chaincode is instantiated on a channel, you don't need all member peers to install the chaincode and run it. But we have to have some member peers to install and run it. Otherwise, no transactions can be performed on this chain... 2019-04-17, 828👍, 0💬

Switch Default Peer with Scripts
How to Switch Default Peer on the CLI container with Scripts? I am tired of typing those 4 CORE_PEER_* export commands. From previous tutorial, we know that we need to type in export commands to set 4 CORE_PEER_* environment variables. But you can also put them into shell scripts and run them whenev... 2020-05-29, 820👍, 0💬

Peer and CouchDB Container Dependency
Which Peer container depends which CouchDB container in BYFN network? If you are running BYFN (Build Your First Network) with the CouchDB option, the Peer and CouchDB Container Dependency is defined in the "docker-compose-couch.yaml" file. $ cd ~/hyperledger-binaries/fabric- samples/first-network$ m... 2020-07-03, 816👍, 1💬

Invoke Operation on Chaincode Container
Which chaincode container runs the chaincode invoke operation? The chaincode "mycc" instance is configured in the BYFN (Build Your First Network) to run in both chaincode containers when one of their peers receives the "Invoke" call. 1. Set up a terminal on the hosting system to follow the log file ... 2020-06-08, 765👍, 0💬

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