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What Is Basic Sample Business Network
What is Basic Sample Business Network? Basic Sample Business Network is the "Hello World" of Hyperledger Composer samples, which demonstrates the core functionality of Hyperledger Composer by changing the value of an asset. Basic Sample Business Network supports the following business object types: ...
2020-12-22, ∼1700🔥, 0💬

"microsoft/windowsservercore" - Windows Base Image
What is the Windows Base Image, "microsoft/windowsservercore"? If you want to build any Docker images for Windows platform, you should take a look at the Windows base image first. 1. Search for Windows related images: C:\fyicenter&gt; docker search windows microsoft/windowsservercore The officia...
2022-12-15, ∼1699🔥, 0💬

"first-network" - Building Your First Network
What is BYFN (Build Your First Network)? BYFN (Build Your First Network) is a tutorial provided in the Hyperledger Fabric "Samples, Binaries and Docker Images" package provided at http://bit.ly/2ysbOFE . After installing the binary package, the BYFN tutorial is located at ~/hyperledger-binaries/fabr...
2020-05-05, ∼1699🔥, 0💬

Main Interfaces to Communicate with Ledger Peer
What are Main Interfaces to Communicate with a ledger peer on a hyperledger fabric network? There are 3 Main Interfaces to Communicate with a ledger peer on a hyperledger fabric network. 1. Peer CLI - The Peer CLI is a Command Line Interface (CLI) provided as part of the Hyperledger Fabric distribut...
2020-01-21, ∼1697🔥, 0💬

Reinstall Node.js Required Modules
How to reinstall Node.js Required Modules with the new version of npm? After installing the latest version of "node" and "npm" with "nvm", you can reinstall Node.js Required Modules to run Node.js client applications again the WYFA network. 1. Remove all files in "node_modules": $ cp ~/hyperledger-b...
2020-01-04, ∼1697🔥, 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, ∼1696🔥, 0💬

"composer card" Commands
What can I do with "composer card" command? "composer card" commands are part of the Composer CLI command set. It allows you to manage access cards stored in the Composer Wallet, which is located at "~/.composer/cards" directory. Here is the syntax of the "composer card" commands: $ composer card he...
2020-07-22, ∼1692🔥, 0💬

"composer archive" to Generate BNA File
How to package my business network source code files into a BNA file for deployment? You can use the "composer archive create" command to package my business network source code files into a BNA file for deployment: $ cd tutorial-network $ composer archive create -t dir -n . $ ls -l tutorial-network...
2021-02-04, ∼1691🔥, 0💬

"concept" CTO Statement Syntax
What is the syntax of the "concept" CTO Statement The "concept" statement declares a generic data type to represent secondary data entities to support primary data entities. Here is the syntax of an "concept" statement: concept type_name [extends super_type] { o|--&gt; property_type property_nam...
2021-06-19, ∼1690🔥, 0💬

CORE_PEER_* Environment Variables on BYFN CLI
What is the default peer and how to change it on the BYFN CLI container? On the BYFN CLI container, you can manage other peer nodes with the "peer" command. When you run a "peer" command, it will connect to the default peer node define by these environment variables: CORE_PEER_ADDRESS=peer0.org1.e xa...
2020-09-30, ∼1689🔥, 0💬

Objectives of WYFA tutorials
What are the objectives of WYFA (Writing Your First Application) tutorials? Objectives of WYFA (Writing Your First Application) tutorials provided at hyperledger-fabric.readthedocs .ioWebsite are: 1. Setting up a development environment. Our application needs a network to interact with, so we’ll get...
2020-03-15, ∼1687🔥, 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, ∼1682🔥, 0💬

"configtx.yaml" Environment Configuration File
What is the "configtx.yaml" Environment Configuration File? "configtx.yaml" is a Configuration File used to control the Hyplerledger Composer development environment. It is located in the "composer" sub-directory: $ cd fabric-dev-servers/fabric-scri pts/hlfv12/composer$ ls -l -rw-r--r-- 1 fyicenter ...
2020-07-22, ∼1679🔥, 0💬

Upgrade/Downgrade Python in Conda on nvidia/cuda Docker
How to Upgrade or Downgrade Python in Conda on nvidia/cuda Docker? If you need to run a specific version of Python, you can Upgrade or Downgrade Python Conda on nvidia/cuda Docker as shown in this tutorial. 1. Attach a terminal to the running docker. fyicenter# docker exec -it my_cuda /bin/bash (bas...
2023-02-21, ∼1678🔥, 1💬

Connect to Local Playground Server
How to connect to my local Hyperledger Composer Playground Server? When your local Hyperledger Composer Playground Server is started, it listens to the 8080 port by default. So you can connect to the server with a Web browser on the local system, using the following address: http://localhost:8080 If...
2021-02-17, ∼1678🔥, 0💬

Turn on Orderer Peer Operation RESTful API
How to Turn on Orderer Peer Operation RESTful API? You can follow this tutorial to Turn on Orderer Peer Operation RESTful API. 1. Update Docker Compose YAML file, docker-compose-default.yaml to override the "operations" settings: $ cd fabric-orderer $ vi docker-compose-default.yaml # Copyright (c) F...
2019-05-14, ∼1678🔥, 0💬

"docker container rm ..." - Remove All Containers
How to remove all containers from the Docker Engine with "docker container rm ..." command? If you have created many containers on the Docker Engine and you want to remove them all, you can use the "docker container rm ..." command with a sub-command to specify the list of all container IDs. 1. Run ...
2019-09-12, ∼1676🔥, 0💬

Contents of Hyperledger Fabric Binary Package
What contents are included in the Hyperledger Fabric Binary Package? Here is the directory list of the Hyperledger Fabric Binary Package: $ cd ~/hyperledger-binaries/fabric- samples$ ls -l -rw-rw-r-- 1 fyicenter 597 Apr 1 23:01 CODE_OF_CONDUCT.md -rw-rw-r-- 1 fyicenter 961 Apr 1 23:01 CONTRIBUTING.m...
2020-01-21, ∼1673🔥, 0💬

Add Identity using JSON String
How to add a new identity using a JSON string? You can follow this tutorial to add a new identity using a JSON string. 1. Go to the Fabric CA Client system where you have the "admin" wallet created in the previous tutorial. $ cd ~/fabric-ca/native-client/admi n$ export FABRIC_CA_CLIENT_HOME=~/fabric ...
2019-09-16, ∼1673🔥, 0💬

Pull Hyperledger Fabric Peer Image
How to Pull Hyperledger Fabric Peer Image from docker hub? You can follow this tutorial to Pull Hyperledger Fabric Peer Image from docker hub. 1. Check the Docker local repository: $ docker image list | grep fabric-peer hyperledger/fabric-peer latest a1e3874f338b 3 weeks ago 178MB hyperledger/fabric...
2019-05-10, ∼1667🔥, 0💬

Create Orderer Organization Definition
How to Create Orderer Organization Definition? You can follow this tutorial to Create Orderer Organization Definition. 1. Instead of creating a new MSP entry for the orderer, you can borrow the one created in BYFN tutorials: $ mkdir fabric-orderer $ cd fabric-orderer $ cp -r ~/hyperledger-binaries/f...
2019-09-04, ∼1666🔥, 0💬

Introduction to Docker
Where to find tutorials as Introduction to Docker, the Container Platform? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team as Introduction to Docker, the Container Platform. What Is Docker Docker Components and Architecture   ⇒ What Is Docker ⇐ D...
2019-06-08, ∼1664🔥, 0💬

"docker container create --name" - Name Container
How to create a new container with a name from an image with "docker container create --name" command? If you create a new container with default options, it will be given a random name. You should use the "--name" to provide your own name. 1. Create a new container with random name. fyicenter$ dock...
2019-03-25, ∼1664🔥, 0💬

Warning on Incompatible "npm" Version
Why I am getting the Incompatible "npm" Version warning with installating Hyplerledger Composer CLI on Ubuntu? You may get the Incompatible "npm" Version warning, if you install Hyplerledger Composer CLI with the "@0.20" version option: $ sudo npm install -g composer-cli@0.20 WARN engine composer-cl...
2021-04-04, ∼1663🔥, 0💬

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