How to download blocks from the blockchain on the peer?

You can follow this tutorial to download blocks from the blockchain on the peer.

1. Connect to the peer container and setup membership variables:

$ docker exec -it peer0.org1.example.com bash

root@aedfd08717a5:/opt/gopath/src/github.com/hyperledger/fabric# cd

root@aedfd08717a5:~# export CORE_PEER_LOCALMSPID=Org1MSP
root@aedfd08717a5:~# export CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp

2. Get information about the blockchain of the "mychannel" channel:

root@aedfd08717a5:~# peer channel -c mychannel getinfo

Blockchain info: {"height":1,
   "currentBlockHash":"X9wYVYmoD4HoXkWVlm1n2n9L2gJEa2PYa8AwAN9CdA4="}

3. Get information about the blockchain of the "mychannel" channel:

root@aedfd08717a5:~# peer channel -c mychannel fetch 0 first.block

root@aedfd08717a5:~# ls -l 
-rw-r--r-- 1 root root 9235 Apr  1 02:52 first.block

As you can see, the channel only has one block, the genesis block. We downloaded a copy to a file.

 

⇒ Check "couchdb" Database Server

⇐ Connet to basic-network Peer

⇑ fabric-samples/basic-network

⇑⇑ Hyperledger Tutorials