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What Is Blockchain
What Is Blockchain? A blockchain is a growing list of data blocks that are cryptographically chained together. A blockchain has the following main features: A data block has a header and a list of data transactions. Merkle hash tree is used to store a fingerprint of all transactions in the block hea...
2022-03-29, ∼1426🔥, 0💬

Create Peer Admin Access Card
How to Create Peer Admin Access Card for my Hyperledger Fabric developer environment? Create Peer Admin Access Card is needed to deploy new Composer business network BNA file to the Hyperledger Fabric developer environment. You can follow these steps to a Create Peer Admin Access Card. 1. Create a n...
2020-12-26, ∼1425🔥, 0💬

Path Name Used to Build Windows Images
What is the format for path names used to build Windows Docker images? Is it different than Linux path name format? Yes. Path name format used to build Windows images is different from Linux images. There are 2 general rules you have to remember when using path names in the Dockerfile to build Windo...
2021-11-30, ∼1424🔥, 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, ∼1422🔥, 0💬

"configtxgen" Command - Build channel.tx
How to run "configtxgen" command to build a transaction message to create the channel in BYFN (Build Your First Network)? You can follow this tutorial to run "configtxgen" command to build a transaction message to create the channel in BYFN. The "configtxgen" command file is located in the ../bin di...
2020-10-20, ∼1421🔥, 0💬

What Is "docker build" Command
What is "docker build" Command? "docker build" Command allows you build new Docker image with instructions given in a given Dockerfile. Here is the syntax of the "docker build" command: fyicenter$ docker build --help Usage: docker build [OPTIONS] PATH | URL | - Build an image from a Dockerfile Optio...
2019-01-27, ∼1420🔥, 0💬

Check "couchdb" Database Server
How to Check the "couchdb" Database Server? The "couchdb" database server supports a REST API. We can use it to look at its data. 1. Find out the REST API port number of the "couchdb" server container: $ docker ps | grep couchdb hyperledger/fabric-couchdb 4369/tcp, 9100/tcp, 0.0.0.0:5984-&gt;598...
2020-03-25, ∼1417🔥, 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, ∼1417🔥, 0💬

Introduction to Hyperledger
Where to find tutorials as Introduction to Hyperledger. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team as Introduction to Hyperledger. What Is Hyperledger What Is Blockchain What Is Distributed Ledger What Is Smart Contract   ⇒ What Is Hyperledge...
2019-04-19, ∼1417🔥, 0💬

Uninstall Chaincode on BYFN Peers
How to uninstall chaincodes on BYFN Peers? Unfortunately, the BYFN CLI "peer chaincode" command does offer any option to uninstall chaincodes from a given peer. You have two options when your chaincodes from different peers are out of sync or incompatible: 1. Destroy chaincode instance and re-instal...
2020-09-15, ∼1416🔥, 0💬

Deploy orderer.example.com Manually
How to Deploy orderer.example.com as a Docker container manually? You can follow this tutorial to Deploy orderer.example.com as a Docker container manually. 1. Verify the configuration of the orderer.example.com container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- sam...
2020-03-25, ∼1416🔥, 0💬

Create Identity Wallet for Isabella
How to Create Identity Wallet for Isabella at MagnetoCorp? Once Isabella gets a copy of the private key and the certificate that represents her identity, User1@org1.example.com, on the PaperNet, she needs to put them in a local wallet. Whenever Isabella runs an application, it will open the wallet a...
2019-11-21, ∼1413🔥, 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, ∼1409🔥, 0💬

Spaces in Path Name on Windows Images
How to manage spaces in path names on Windows images? Spaces in path names are not allowed on Linus systems. But spaces in path names are allowed on Windows systems. There are 2 general rules you have to remember to manage spaces in path names in the Dockerfile to build Windows images. 1. Using the ...
2021-11-30, ∼1407🔥, 0💬

Introduction of Hyperledger Composer
Where to find tutorials on Introduction of Hyperledger Composer. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Introduction of Hyperledger Composer. Hyperledger Composer Components Hyperledger Composer Runtime   ⇒ Hyperledger Composer Co...
2021-12-28, ∼1405🔥, 0💬

Impact of Stopping Chaincode Container
What is the impact of stopping a chaincode container of a peer? We know that if a Peer has chaincode installed, it will run it as chaincode container to help the channel to perform a transaction on the chaincode. If you stop a chaincode container of a peer who is not a required member of the chainco...
2019-04-17, ∼1405🔥, 0💬

"docker container run" - Create and Run Container
How to create a new container and run the default command from an image with "docker container run" command? If you want to create a new container from an image, and start the container with the default command in one step, you can use the "docker container run" command. Here is a list of options su...
2019-03-25, ∼1404🔥, 0💬

"python" - Python Docker Image
What is the Python Docker Image, "python"? I wan to use it build a Python application. The Python Docker Image, "python", is the official Docker image that provides you a Python development environment. You pull and try it. 1. Search for the "python" image. fyicenter$ docker search python NAME DESCR...
2019-02-04, ∼1401🔥, 0💬

What Is Ledger Peer Operation RESTful API
What is Ledger Peer Operation RESTful API? Ledger Peer Operation RESTful API is RESTful Web service provided by a ledger peer. It is different than and separated from the primary ledger Web service provided by the ledger peer. Ledger Peer Operation RESTful API exposes the following functionalities: ...
2019-04-11, ∼1399🔥, 0💬

"docker container start/stop" - Start/Stop Container
How to start a stopped container on the Docker Engine with "docker container start/stop" command? In order to use the "docker container start" or "docker start" command, we need to know the container ID or name. 1. Get the ID or name of a stopped container from the output of the "docker container li...
2019-06-04, ∼1397🔥, 0💬

"docker container run" - Create Container with New Command
How to Create a new Container with a New Command using the "docker container run" command? If you want to create an Alpine container that starts with a new command different than the default command, you need to use the "docker container run" command with your Linux command specified. 1. Create a ne...
2019-02-06, ∼1397🔥, 0💬

Orderer Peer Operation RESTful API
What is Orderer Peer Operation RESTful API? The Orderer Peer Operation RESTful API is RESTful Web service provided by an orderer peer. It is different than and separated from the primary orderer Web service provided by the orderer peer. orderer Peer Operation RESTful API exposes the following functi...
2019-05-14, ∼1394🔥, 0💬

Manage basic-network with cli Container
How to Manage basic-network with cli Container? You can follow this tutorial to Manage basic-network with cli Container. 1. Start all containers, including cli, defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-network$ docker-compose -f docker-compose.yml up ...
2020-03-15, ∼1393🔥, 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, ∼1390🔥, 0💬

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