Issue connecting my lambda function to Amazon managed blockchain

Question

I am failing with a DNS 14 message when trying to call a lambda function to invoke chaincode on my Amazon Managed Hyperledger Blockchain.

ERROR   Failed proposal response. Status code: undefined. Message: 14 UNAVAILABLE: DNS resolution failed. Stack: Error: 14 UNAVAILABLE: DNS resolution failed

at Object.exports.createStatusError (/opt/nodejs/node_modules/grpc/src/common.js:91:15) at Object.onReceiveStatus (/opt/nodejs/node_modules/grpc/src/client_interceptors.js:1209:28) at InterceptingListener._callNext (/opt/nodejs/node_modules/grpc/src/client_interceptors.js:568:42)

I believe that it is due to a grpc link used to access the peer node endpoint.

I've tried logging all of the request fields, but it is difficult to figure out which configuration is missing.

Answer 1

Try to perform nslookup against the peer address. If it fails, see whether you have created VPC Endpoint for the Hyperledger Fabric network.