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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, ∼1676🔥, 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, ∼1676🔥, 0💬

Fabric CA Client Wallet
Where is the Fabric CA Client Wallet that stores identities and certificates used to access the Fabric CA Server? The Fabric CA Client Wallet is stored in the "msp" sub-directory in the $FABRIC_CA_CLIENT_HOME directory or the default location of $HOME/.fabric-ca-client. The Fabric CA Client Wallet h...
2019-09-27, ∼1676🔥, 0💬

BYFN CLI "peer" Command Prefix
How to use BYFN CLI "peer" Command Prefix? By default, when you run the "peer" command on the BYFN CLI container, it will be executed again the default peer node specified by 4 environment variables: CORE_PEER_MSPCONFIGPATH=/opt/g opath/.../org1.example.com/use rs/Admin@org1.example.com/mspCORE_PEER_...
2020-09-15, ∼1673🔥, 0💬

Container Network - "net_basic"
What is the Container Network - "net_basic"? "net_basic" is a Docker container network consists of all containers related to Hyperledger Fabric network, basic-network. A container network groups containers together to help network communications among those containers. You can verify the "net_basic"...
2020-04-14, ∼1667🔥, 0💬

Interfaces to Communicate with Ledger Peer
Where to find tutorials on Interfaces to Communicate with Ledger Peer? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Interfaces to Communicate with Ledger Peer. Main Interfaces to Communicate with Ledger Peer Download and Install Golang SDK D...
2020-01-29, ∼1667🔥, 0💬

Start CLI Container for DigiBank Admin
How to Start CLI Container for the DigiBank Administrator? If you are the administrator from DigiBank and want to manage the PaperNet Hyperledger Fabric network, you can follow this tutorial. 1. Create a new terminal window and run the docker-compose command to start the CLI container: (digibank adm...
2019-11-21, ∼1664🔥, 0💬

Install Docker CE on Ubuntu with "apt"
How to install Docker CE (Community Edition) on Ubuntu with "apt"? You can follow this tutorial to install Docker CE (Community Edition) on Ubuntu with the "apt" tool. 1. Get your Ubuntu codename with "lsb_release" command. fyicenter$ lsb_release -cs bionic 2. Get your system architecture name with ...
2019-04-18, ∼1661🔥, 0💬

Install Composer Prerequisites on Ubuntu
How to install Hyplerledger Composer Prerequisites on Ubuntu? The best way to install Hyplerledger Composer Prerequisites on Ubuntu is to download and run the prereqs-ubuntu.sh script. 1. Verify your Ubuntu version: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: U...
2021-05-04, ∼1659🔥, 0💬

View Logs Files of basic-network
How to view logs files of the example network, basic-network? The example network, basic-network, consists of 4 Docker containers. You can view the log file on each container. 1. View log file of the orderer container: $ docker logs orderer.example.com [orderer.common.server] prettyPrintStruct -&...
2020-04-14, ∼1659🔥, 0💬

Deploy ca.example.com Manually
How to Deploy ca.example.com as a Docker container manually? You can follow this tutorial to Deploy ca.example.com as a Docker container manually. 1. Verify the configuration of the ca.example.com container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-netw...
2020-03-25, ∼1654🔥, 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, ∼1651🔥, 1💬

Install Miniconda3 on nvidia/cuda Docker
How to install Miniconda3 on nvidia/cuda Docker? If you want to run Miniconda3 to manage different versions of Python applications, you can follow this tutorial to install it on the nvidia/cuda Docker. 1. Start nvidia/cuda Docker and let it run for a long time, so we can attach a terminal to it at a...
2023-03-07, ∼1646🔥, 0💬

"docker container rm" - Remove Container
How to remove a container from the Docker Engine with "docker container rm" command? If a container is no longer needed, you can remove it from the Docker Engine to save space using the "docker container rm" command. 1. Run "docker container list --all" command. You see 2 containers created from the...
2019-04-12, ∼1646🔥, 0💬

Upgrade Chaincode Instance on BYFN
How to upgrade chaincode instance on BYFN? You can follow this tutorial to upgrade the chaincode instance on BYFN. You can use this process to fix any issues with chaincode instance without destroy its data. 1. Install new version, 2.0, of the chaincode on the default peer, peer0.org1. bash-4.4# ech...
2020-09-12, ∼1643🔥, 1💬

Invoke Chaincode Transaction on BYFN Channel
How to Invoke Chaincode Transaction on BYFN Channel? An instance of a chaincode can be viewed as an object of a class in an execution environment. It can hold transaction operations to manage its properties. You can run the "peer chaincode invoke" command to invoke the "Invoke" operation of a given ...
2020-09-30, ∼1641🔥, 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, ∼1639🔥, 0💬

"peer chaincode invoke" on BYFN
How to run "peer chaincode invoke" to invoke the transaction on the chaincode instance? After a chaincode in properly installed on all peers and instantiated on the channel, you can run the "peer chaincode invoke" to invoke the transaction on the chaincode instance. 1. Verify instantiated chaincode:...
2020-08-13, ∼1638🔥, 0💬

Download Business Network from Playground
How to download Business Network from Hyperledger Composer Playground? You can follow this tutorial to download a Business Network from Hyperledger Composer Playground and save it to your local computer. 1. Open Hyperledger Composer Playground and go to Basic Sample Business Network home page, as sh...
2020-12-15, ∼1637🔥, 0💬

"docker container ..." - Manage Containers
How to manage containers with "docker container ..." commands? A Docker container is a deployed instance of an application that runs on the Docker Engine in an encapsulated environment. You can use "docker container" commands to manage Docker containers. Here is a list of sub-commands supported by t...
2019-06-02, ∼1632🔥, 0💬

Docker Components and Architecture
What are the components of Docker and how they related to each other? Docker consists of several main components: Docker Server (also called Docker Daemon, Docker Server, "dockerd") - The background process that manages Docker containers and handles container objects. The daemon listens for requests...
2019-05-28, ∼1632🔥, 0💬

"docker run hello-world" Test on Ubuntu
How to run the "docker run hello-world" Test on Ubuntu? "hello-world" is simple Docker container application that displays the "Hello from Docker!". "hello-world" can be used to as test for you local Docker environment as shown below: fyicenter$ docker run hello-world Unable to find image 'hello-wor...
2019-04-30, ∼1628🔥, 0💬

HTML resources?
Hi there, I know you're busy, so I'll keep it short and sweet :) I've just built a nice little tool called 'HTML5 Periodic Table'. It's incredibly useful for any developer using HTML and the great thing is that anyone in your audience can use it anytime they want for absolutely zero cost! Naturally,...
2020-08-25, ∼1626🔥, 0💬

"byfn.sh generate" - Generate BYFN Configuration
How to run "byfn.sh generate" to Generate BYFN Network Configuration? You can follow this tutorial to run "byfn.sh generate" to Generate BYFN Network Configuration with default values. The "./byfn.sh generate" command automatically calls: "../bin/cryptogen" to generate certificates, and "../bin/conf...
2020-05-05, ∼1625🔥, 0💬

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