Questions tagged blockchain

Explore the latest questions and answers asked by our top developers.

Right way to run a validator node on Ubuntu 20 desktop

I’m an Ubuntu and server noob so pardon may lack of understanding of some basics. My objective is to run a validator node for one of the blockchains. It is a Proof of Stake chain, so my machine is not going to run Proof of Work algos all day. In fact, it mostly needs to […]

By kamil k
Categorised as blockchain, daemon, docker, ubuntu, ubuntu-server Tagged , , , ,

Cannot run peer because error when setting up MSP

I have this network structure and I should do the creation, when I launch the script, I get the following error message: ** CET [main] InitCmd -> ERRO 001 Cannot run peer because error when setting up MSP of type bccsp from directory /home/matteo/Immagini/test-network/ Setup error: nil conf reference** [docker-compose.yaml][1] [config.yaml + error][2] [ […]

By KoluG
Categorised as blockchain, ca, docker, hyperledger-fabric Tagged , , ,

Docker container file rename or remove issue

while running this command docker exec -it cli peer chaincode instantiate -C mychannel -l "node" -n airmed -v v1 -c ‘{"Args":[]}’ -o –tls –cafile /opt/gopath/src/ It stopped and shows cli container (with some id) already exist so rename or remove it. please guide Source: Docker Questions

Hyperledger fabric – Cant connect peer to channel – endorser client failed to connect – connection refused

I created a testchannel and tried to join peer to it using the codes below. export CORE_PEER_LOCALMSPID="Org1MSP" export CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/ export CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/[email protected]/msp export peer channel join -b testchannel.block But connection error occured as below. Error: error getting endorser client for channel: endorser client failed to connect to failed to create new connection: connection error: […]

Unable to open the config file and Failed to generate orderer genesis block

I am stuck here. Error Log: So far I had tried by adding this in environment variable. FABRIC_CFG_PATH = D:PracticeBlockchainhyperLedgerfabric-samplesconfig and also had run this command: export FABRIC_CFG_PATH=${PWD}/configtx But still showing the same error. Source: Docker Questions

How to run hyperledger besu node through docker with custom configuration?

I am trying to create one node through docker with my custom configuration file [config.toml], but i didn’t succeed at all. Can anyone guide me how to do this? Thanks…… Source: Docker Questions

Hyperledger Fabric v2.2 read the ledger

I have already start a Fabric network followed by . (fabcar project). This is my docker ps –a : docekr ps Now ,I have this questions: Where is the ledger file which stored the transcations history. How can i see the history transcations and the created blocks. I have read the doc in Fabric […]

How to set DOCKER_SOCK variable to create container for service

when i want to bring up the Org3 peer in hyperledger fabric network and run command : docker-compose -f docker/docker-compose-org3.yaml up -d I have some errors as fallow: WARNING: The DOCKER_SOCK variable is not set. Defaulting to a blank string. Creating … error ERROR: for Cannot create container for service create .: […]

How to create a channel in Hyperledger 2.x?

my name is Augusto and i was using hyperledger 1.4, but i want to upgrade my network to hyperledger 2.x, but i can’t create a channel is this new version. I am able to generate the certificates and up the networks, all containers up without warnings or errors, so i don’t know where i am […]

Moonbeam (polkadot parachain) transaction error

I have an issue setting up local node. There is a docker-compose which launches Kusama network with some minor changes (like epoch time and proposal voting/enacting time) with custom chain-spec for 6 validators, and it runs with 2 collator nodes of moonbeam (default moonbeam-local chain-spec, where Alice and Bob addresses replaced with custom ones). I […]

Categorised as blockchain, docker, docker-compose, polkadot Tagged , , ,
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