Looking at the 7Node example from: https://github.com/jpmorganchase/quorum-examples/tree/master/examples/7nodes

and trying to configure my network but have ran into a lot of trouble over the days, trying to get geth to take quorum options or the --permissioned flag having errors in a geth release, trying to rebuild etc. I am frustrated and I am weak. The documentation isn't that great. And it does not tell you how the constellation node and your geth node should interact. I looked at the scripts and I tried but I am not getting anywhere. I only got this far in 3 days.


Geth: 1.7.2-stable-d4a1b095

go version go1.9.4 linux/amd64

Constellation Node 0.3.2

start constellation node:

nohup constellation-node --url= --port=9001 --workdir=qdata/c1 --socket=tm.ipc --publickeys=tm.pub --privatekeys=tm.key --othernodes= 2> const1.log


Unlocking tm.key
Unlocked tm.key


nohup: ignoring input and appending output to 'nohup.out'
16:47:16 [INFO] Log level is LevelWarn
16:47:16 [WARN] tls-server-cert.pem's hostname (127.0.0.) is different from the one given in the configuration ( This may cause connection problems.
16:47:16 [WARN] tls-client-cert.pem's hostname (127.0.0.) is different from the one given in the configuration ( This may cause connection problems.

script used to generate:

set -u
set -e

echo "[*] Starting Ethereum nodes"
set -v
ARGS="--nodiscover --raft --rpc --rpcaddr --rpcapi admin,db,eth,debug,miner,net,shh,txpool,personal,web3,quorum --emitcheckpoints"
PRIVATE_CONFIG=qdata/c1/tm.ipc nohup geth --datadir qdata/dd1 $ARGS --permissioned --raftport 50401 --rpcport 22000 --port 21000 2>>qdata/logs/1.log &


nohup: appending output to 'nohup.out'
    panic: MustNew: Failed to connect to Constellation (qdata/c1/tm.ipc): Get http+unix://c/upcheck: read unix @->tm.ipc: i/o timeout

    goroutine 1 [running]:
    github.com/ethereum/go-ethereum/private/constellation.MustNew(0xc42001400f, 0xf, 0xc42001400f)
            /home/ubuntu/quorum/build/_workspace/src/github.com/ethereum/go-ethereum/private/constellation/constellation.go:75 +0x18d
    github.com/ethereum/go-ethereum/private.FromEnvironmentOrNil(0x1054ac3, 0xe, 0xc4201bd3a0, 0xc4201bd380)
            /home/ubuntu/quorum/build/_workspace/src/github.com/ethereum/go-ethereum/private/private.go:19 +0x6e
            /home/ubuntu/quorum/build/_workspace/src/github.com/ethereum/go-ethereum/private/private.go:22 +0x69
            <autogenerated>:1 +0x104
            <autogenerated>:1 +0x6e
            <autogenerated>:1 +0x6a

Node static-node.gensis:



  "alloc": {},
  "coinbase": "0x0000000000000000000000000000000000000000",
  "config": {
    "byzantiumBlock": 1,
    "chainId": 1,
    "eip150Block": 1,
    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "eip158Block": 1,
  "difficulty": "0x0",
  "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "gasLimit": "0xE0000000",
  "mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",
  "nonce": "0x0",
  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "timestamp": "0x00"

1 Answer 1

  • First, you need to delete the certificates, know hosts and keys generated by constellation previously in this folder workdir=qdata/c1. These certificates are used for communication between constellation nodes, for this reason it is important that these certificates are well generated.

  • The option --othernodes = in your constellation execution command is trying to connect itself. If you want to connect to a second node of constellation, you need to place the ip of the second node with the specific port.

  • After, the GETH error you are getting is because the node Constellation is not running. Geth needs Constellation to be running in order to start up.

  • Finally execute the following command considering the option othernodes as I commented previously.

    nohup constellation-node --url= --port=9001 --workdir=qdata/c1 --socket=tm.ipc --publickeys=tm.pub --privatekeys=tm.key -- othernodes= 2> const1.log

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