How is consensus reached when there are only two peers in Hyperledger Fabric

Question

Suppose there are only two nodes in the channel and one of them is a malicious node, if this malicious node tries to change the data or approve faulty transactions, how is consensus achieved in this situation?

Answer 1

The consensus is achieved in the ordering services and not by peers. peers could send faulty transactions but cant manipulate the blockchain. The result of transaction depends on the smart contract that you have written and the endorsement policy.

The blocks are created by the Ordering Service and the blocks will be equal to both the peers.

To avoid this situation, an additional independent 3rd party peer can be added in each organization and these parties
should take up Ordering Services