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Hyperledger Composer Environment Components
What components are included in my Hyperledger Composer Environment? The fabric-dev-servers.tar.gz package provides the 4 components running as Docker containers to form your Hyperledger Composer Environment. You can identify Hyperledger Composer by their container names from the output of the "dock...
2020-07-14, 887🔥, 0💬

Hyperledger Composer Environment Orgs and Users
What Orgs and Users are included in my Hyperledger Composer Environment? The fabric-dev-servers.tar.gz package includes two default organizations and one admin user for each organization: org1.example.com - "org1.example.com" is the organization owns the peer node "peer0.org1.example.com". "org1.exa...
2020-07-14, 846🔥, 0💬

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, 1437🔥, 0💬

Hyperledger Fabric Docker Containers
Where to find tutorials on Hyperledger Fabric Docker Containers? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Hyperledger Fabric Hyperledger Fabric Docker Containers. Types of Hyperledger Fabric Docker Containers Watch "orderer" Container Lo...
2020-07-07, 1148🔥, 2💬

Types of Hyperledger Fabric Docker Containers
How many types of Hyperledger Fabric Docker Containers are there? In a typical Hyperledger Fabric network (using goleveldb instead of couchdb), you will have 4 types containers running on the Docker Engine: 1. Orderer container - In a simple Hyperledger Fabric network, there is only one Orderer cont...
2020-07-07, 1138🔥, 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, 1036🔥, 0💬

Peer Containers Not Joined to Channel
Can I stop Peer Containers That Are Not Joined to Channel? Yes. You can stop Peer Containers That Are Not Joined to Channel. For example, you have 1 channel, "mychannel", and 4 peers. You know that only 2 of them are joined to the channel. You can stop the other peer containers. 1. List all peer con...
2020-07-07, 805🔥, 0💬

Auto-Start of Required Chaincode Container
Why a chaincode container is automatically started? A chaincode container will be automatically started, if a chaincode is invoked and the chaincode container's peer is a required peer for the chaincode. Let's continue with the previous tutorial to see this behavior. 6. Stop the chaincode container ...
2020-07-03, 1106🔥, 2💬

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Deploy couchdb Container Manually
How to Deploy couchdb as a Docker container manually? You can follow this tutorial to Deploy couchdb as a Docker container manually. 1. Verify the configuration of the couchdb container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-network$ more docker-com...
2020-07-03, 1057🔥, 1💬

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, 1490🔥, 1💬

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, 961🔥, 1💬

Query CouchDB Container API Directly
How to query CouchDB Container API directly? If you are running BYFN (Build Your First Network) with the CouchDB option, the World State of each peer node is stored a CouchDB server running as Docker container. The CouchDB server supports a REST API interface at the local port 4369, which is mapped ...
2020-06-08, 1581🔥, 0💬

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, 1152🔥, 0💬

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, 924🔥, 0💬

Inspect Docker Container Configuration
How to Inspect the Configuration of a Docker Container? You can use the "docker inspect" command to view the Configuration of a given Docker Container. For example, Let's look at the configuration of the peer0.org1 container of the BYFN network. $ docker inspect peer0.org1.example.com [ { "Id": "b81...
2020-05-29, 1120🔥, 0💬

Remove Log Files of Docker Container
How to remove log files of a Docker container? If you keep a Docker container running for many days, it will generate many log files on your hosting system. You can follow this tutorial to remove old log files of a Docker container. 1. Get the container ID of "peer0.org1.example.com" container: $ do...
2020-05-29, 1074🔥, 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, 1024🔥, 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, 990🔥, 0💬

Blockchain Data Files on Peer Container
Where is the location of Blockchain Data Files on a Peer Container? We known that each peer container needs to maintain a copy of the ledger data for each channel it joined. Ledger data is divided into 2 parts: World State and Blockchain. The World State data is stored in a database, like Go LevelDB...
2020-05-29, 973🔥, 0💬

BYFN (Build Your First Network)
Where to find tutorials on Hyperledger Fabric BYFN (Build Your First Network)? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Hyperledger Fabric BYFN (Build Your First Network). "first-network" - Building Your First Network "byfn.sh generate" ...
2020-05-15, 2042🔥, 0💬

Install Hyperledger Fabric Binary Package
How to Install Hyperledger Fabric Binary Package on Ubuntu? I don't want to download the source code and build the binary. You can follow this tutorial to Install Hyperledger Fabric Binary Package on Ubuntu. 1. Create the download local directory: $ mkdir -p hyperledger-binaries/fabric-sa mples$ cd ...
2020-05-15, 1469🔥, 0💬

Download Hyperledger Fabric Source Code
How to download Hyperledger Fabric source code on Ubuntu? You can follow this tutorial to download Hyperledger Fabric source code on Ubuntu: 1. Set up Go home path. And add the command to your shell initial script, ~/.bashrc, so you don't have to do it again in future logins. $ export GOPATH=$HOME/g...
2020-05-15, 1373🔥, 0💬

Build and Run "Hello" Go Program
How to Build and Run "Hello" Go Program on Ubuntu? Hyperledger Fabric framework is written in Go language. So it is important to learn how build and run Go programs on Ubuntu. Here are the steps to build and run the "Hello" Go program. 1. Make sure that Go is installed. $ go version go version go1.1...
2020-05-15, 1032🔥, 0💬

Verify Docker Engine on Ubuntu
How to verify Docker Engine on Ubuntu? Hyperledger Fabric framework runs on Docker Engine. So it is important to verify that Docker Engine is running correctly on your local Ubuntu system. Here are some suggestions on how to verify the Docker Engine. 1. Verify version of the Docker Engine and make s...
2020-05-15, 991🔥, 0💬

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