Hyperledger Fabric: Orderer Client failed to connect to orderer.example.com - docker

Question

I am new to hyperledger fabric and I am trying to create a sample blockchain network from scratch using hyperledger fabric. In order to do so, I configured "crypto-config.yaml" file, and generated the respective organization's certificates by running it against the "cryptogen" tool. I also generated the respective "channel-artifacts" by configuring the "configtx.yaml" file and running it against the configtxgen tool. I then modified the "docker-compose-cli.yaml" file and "docker-compose-base" file.
Now, in order to bootstrap the network, I ran the following docker command:
docker-compose -f docker-compose-cli.yaml up
I then executed the following commands:
docker exec -it cli bash
export CHANNEL_NAME=testChannel
peer channel create -o orderer.example.com:7050 -c testChannel -f ./channel-artifacts/testChannel.tx
On executing the "peer channel create" command I received the following error:
Error: failed to create deliver client: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded
I am not sure as to why this error is occurring. My configuration for the Address section in OrdererDefaults (in configtx.yaml file) is:
Ordertype:
- solo
Addresses:
- orderer.example.com:7050
Hence, please let me know if I am missing something in order to clear the "peer channel create" issue.

Answer 1

do a docker ps and see if the orderer is up and running
if not do a docker logs orderer.example.com and check orderers logs
usually the orderer logs give clear clues on what has happened
read the logs and fix the issue . that's what i did
and instead of creating a peer first going inside it and creating a channel ,i suggest you create the channel first and join the peer to it afterwards
Create the channel
docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin#org1.tracexyz.com/msp" peer0.org1.tracexyz.com peer channel create -o orderer.tracexyz.com:7050 -c cheeseproduction -f /etc/hyperledger/configtx/channel.tx
Add peer 0 to the channel
docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin#org1.tracexyz.com/msp" peer0.org1.tracexyz.com peer channel join -b cheeseproduction.block
Fetch from peer 1
docker exec -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin#org1.tracexyz.com/msp" peer1.org1.tracexyz.com peer channel fetch config -o orderer.tracexyz.com:7050 -c cheeseproduction
Join peer 1 also to the channel
docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin#org1.tracexyz.com/msp" -e "CORE_PEER_ADDRESS=peer1.org1.tracexyz.com:7061" peer0.org1.tracexyz.com peer channel join -b cheeseproduction.block
this is how i connected two peers to a single channel. my org name was tracexyz (tracexyz instead of example ) and my channel name was cheeseproduction
I guesss you can replace those with your own values
after doing these go inside the peer with
docker exec -it cli bash
it will take you inside the default peer which is peer0.org1
then do a peer channel list to see the channels to which peer0 has joined
you will see it will list cheeseproduction