tendermint start error

[MsalekM]

fresh install on 3 node.
-OS : Ubuntu 20.04 lts

• bigchaindb : 2.2.2
• tendermint : 0.31.5-d2eab536
• nginx and ssl using letsencrypt

when i start bigchaindb, it's look good
when start tendemint with tendermint node iget this message

E[2021-05-12|22:12:41.717] abci.socketClient 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"
any ideas are welcome

[MsalekM]

is ok for me just update gevent
pip install --upgrade gevent

[rupam150]

check if the ports are accepting outbound request or not , may be some security issues with ports
else try to build the network using tendermint testnet command .

[geosoft1]

I have exactly the same problem on Ubuntu 20.04. I have installed bigchaindb like in the official documentation but seems that tendermint refuse any connection. I tried with two nodes but I imagine that should not mater. Each node works itself and can be used independenty but can't connect to the other(s). The network is made like in their documentation.
Any ideas are apreciated.

[rupam150]

hi @geosoft1 the minimum number of nodes required to establish a successful connection is 4 , as according to BFT consensus , 3f+1 nodes are required in tendermint ( where f= no of faulty nodes )

So try to go with 4 nodes intead of 2 ..