Where to ask about Tendermint connection refused error?

Question

I am having trouble setting up a BigchainDB network and made a post on Stack Overflow about it. However, I'm not sure if that was the correct place to post it. I checked the Stack Exchange sites, however, I'm not sure which one is relevant for this particular problem and therefore I am searching for a recommendation.

I'm trying to set-up a local BigchainDB network with 3 Raspberry Pis using this repository as a reference. However, all my nodes encounter a "connection refused" problem on tendermint.service. Tendermint is on v0.31.5 and BigchainDB on v2.0.0. I checked if the port is blocked but it seems to be fine.

The error that I am getting is:

Jan 09 14:52:41 ubuntu tendermint[807]: E[2023-01-09|14:52:41.985] abci.socketClient failed to connect to tcp://0.0.0.0:26658. Retrying... module=abci-client connnt failed to connect to tcp://0.0.0.0:26658. Retrying... module=abci-client connection=query err="dial tcp 0.0.0.0:26658: connect: connection refused">

I am running Tendermint using a unit file:

[Unit]
Description=Tendermint. Byzantine-fault tolerant state machine replication.
Documentation=https://tendermint.readthedocs.io/en/master/
[Service]
ExecStart=/usr/local/bin/tendermint node \
                   --p2p.laddr "tcp://0.0.0.0:26656" \
                   --proxy_app="tcp://0.0.0.0:26658" \
                   --consensus.create_empty_blocks=false \
                   --p2p.pex=false
WorkingDirectory=/home/ubuntu
User=tendermint
Group=bigchaindb

[Install]
WantedBy=multi-user.target

I've also configured the genesis.json file in every node:

{
 "genesis_time": "2022-12-19T11:03:38.312591884Z",
 "chain_id": "test-chain-sveGDu",
 "consensus_params": {
     "block": {
       "max_bytes": "22020096",
       "max_gas": "-1",
       "time_iota_ms": "1000"
      },
      "evidence": {
       "max_age": "100000"
      },
      "validator": {
       "pub_key_types": [
        "ed25519"
       ]
      }
     },
     "validators": [
      {
       "address": "87498C9693362176BFC2A4122133568297865193",
       "pub_key": {
        "type": "tendermint/PubKeyEd25519",
        "value": "dIy8HUovVJatppDrmJieSGW26jWSJrNhzwHMJetysqA="
       },
       "power": "10",
       "name": ""
      },
      {
       "address": "B59216978AB15F31171E8AB482F62D768721DA13",
       "pub_key": {
        "type": "tendermint/PubKeyEd25519",
        "value": "64BTBlnCPSe26HJfpnCkV8A6BS5w//rAqVu/C01sOqA="
       },
       "power": "10",
       "name": ""
      },
      {
       "address": "6067D6D53CD82EBF9C1F4704AC9F27BAE7CB8F9F",
       "pub_key": {
        "type": "tendermint/PubKeyEd25519",
        "value": "QGNyJpLgqjlRanNgtRdAsLTnpylmSo9FymkPFXSnZbI="
       },
       "power": "10",
       "name": ""
      }
     ],
     "app_hash": ""
}

Answer 1

Tendermint is Byzantine Fault Tolerance library, like its alternative CometBFT.

BFT is a problem of cryptography. But Cryptography Stack Exchange probably just wants theoretical questions.

Ethereum Stack Exchange could be the right place. It has a [tendermint] tag. In fact several EVM-compliant cryptocurrencies use tendermint for BFT.

Fixing the error "net.Dial() returns connection refused" would be a Go question, which would be OK for Stack Overflow, if you leave out the tendermint part of the question.

As for the problem: Probably the peer services are not yet running.