CODEWITHSUNDEEP
hyperledger-fabrichyperledger
Karthik Sukumaran
Karthik Sukumaran

Reputation: 61

Fabric-Sample: Cannot create ledger from genesis block, due to LedgerID already exists

I am trying out the fabric-samples balance-transfer example, I tried to create a new channel with the below commands. The channel gets created but when I try to join the peer to the channel I get the below error. Can anyone suggest the step I am missing or going wrong

[client-utils.js]: sendPeersProposal - Promise is rejected: Error: chaincode error (status: 500, message: Cannot create ledger from genesis block, due to LedgerID already exists)

Command I used to create a new channel Config

configtxgen -profile TwoOrgsChannel -outputCreateChannelTx ./channel.tx -channelID channel1

REST Call I am using to create the channel

curl -s -X POST http://localhost:4000/channels -H "authorization: Bearer XXXXXX" -H "content-type: application/json" -d '{ "channelName":"channel1", "channelConfigPath":"../artifacts/channel/channel.tx" }'

REST Call I am using to join the channel

curl -s -X POST http://localhost:4000/channels/channel1/peers
-H "authorization: Bearer XXXXX" -H "content-type: application/json" -d '{ "peers": ["peer1","peer2"] }'

Upvotes: 5

Views: 6425

Answers (3)

Badr Bellaj
Badr Bellaj

Reputation: 12821

If you run into similar problem check if the following environment variables are set:

export CORE_PEER_TLS_ENABLED=true
export CORE_PEER_LOCALMSPID="Org1MSP"
export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/[email protected]/msp
export CORE_PEER_ADDRESS=localhost:7051

Upvotes: 0

Bhargav
Bhargav

Reputation: 31

This error occurs in two different scenarios:

  1. If the peer has already joined the channel and you are doing it again. You can run peer channel list and check whether peer has already joined the channel.

  2. When you stop, remove docker containers, and up the containers again in docker-compose.yaml ,peer volume in the container would have stored previous data. So even though you believe you didnt create the channel, this channel information is available because of the previous volumes in the peer container. So you need to remove these volumes as well by running docker system prune --volumes -f . This removes the unused volumes and networks.

Upvotes: 0

smeyers
smeyers

Reputation: 333

In most instances, Cannot create ledger from genesis block, due to LedgerID already exists, indicates that the peers have already joined the channel.

A quick way to test this, if you have instantiated chaincode on the peers, is to do a query on the ledger using one of the peers.

Upvotes: 3

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