transport: error while dialing: dial tcp 127.0.0.1:7050: connect: connection refused
Hi, I started the official course about Hyperledger Fabric Developer, but when I run ./network.sh up createChannel -ca -s couchdb
I get the following error:
Error: failed to create deliver client for orderer: orderer client failed to connect to localhost:7050: failed to create new connection: connection error: desc = "transport: error while dialing: dial tcp 127.0.0.1:7050: connect: connection refused" Channel creation failed
I am running it from Ubuntu 20.04 in WSL2 (Windows).
Did anybody already face this problem? Any idea how to fix it?
Thank you!
Comments
-
OK never mind I found the cause. The instructions say to run
./network.sh up createChannel -ca -s couchdb
, but instead I tried to run first./network.sh up
and then./network.sh createChannel -ca -s couchdb
.0 -
Hi, I am getting the exact same error, but unfortunately it wasn't resolved by running the "up" and "createChannel" commands separately. If anyone has any ideas then please let me know.
0 -
@drcirculor,
Hello, Let's see if we can figure this out. This error usually occurs when one of the dependencies is out of sync. Please go back and check the versions of the dependencies, especially Docker. Let me know if this helps. Bobbi0 -
Thanks @Bobbijn
Yes, you were right - I noticed this error when I brought up the network, "Local fabric binaries and docker images are out of sync."
I ended up deleting the "fabric" and "fabric-samples" folders from "~/go/src/github.com/hyperledger", then repeating the curl and git steps in the "Hyperledger Fabric samples, binaries, and Docker images" section.
The network startup and channel creation worked fine after that.Thanks for your help.
1 -
@drcirculor shukran yoh...had gotten stuck there for a couple of hours.
0 -
I am still having this issue:
- My installation is on stand alone machine.- running Ubuntu 20.04.4
I have verified the dependencies (we can add versions here) and running the correct command, but
- docker --version
Docker version 20.10.13, build a224086
- docker-compose --version
docker-compose version 1.25.0, build unknown
For the last step, (running as a root)
cd ~/go/src/github.com/hyperledger/fabric-samples/test-network/
./network.sh up createChannel -ca -s couchdb
Creating channel 'mychannel'.
If network is not up, starting nodes with CLI timeout of '5' tries and CLI delay of '3' seconds and using database 'couchdb
Generating channel create transaction 'mychannel.tx'
+ configtxgen -profile TwoOrgsChannel -outputCreateChannelTx ./channel-artifacts/mychannel.tx -channelID mychannel
2022-03-14 22:22:36.335 EDT [common.tools.configtxgen] main -> INFO 001 Loading configuration
2022-03-14 22:22:36.376 EDT [common.tools.configtxgen.localconfig] Load -> INFO 002 Loaded configuration: /root/go/src/github.com/hyperledger/fabric-samples/test-network/configtx/configtx.yaml
2022-03-14 22:22:36.376 EDT [common.tools.configtxgen] doOutputChannelCreateTx -> INFO 003 Generating new channel configtx
2022-03-14 22:22:36.465 EDT [common.tools.configtxgen] doOutputChannelCreateTx -> INFO 004 Writing new channel tx
+ res=0
Creating channel mychannel
Using organization 1
+ peer channel create -o localhost:7050 -c mychannel --ordererTLSHostnameOverride orderer.example.com -f ./channel-artifacts/mychannel.tx --outputBlock ./channel-artifacts/mychannel.block --tls --cafile /root/go/src/github.com/hyperledger/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
+ res=1
+ peer channel create -o localhost:7050 -c mychannel --ordererTLSHostnameOverride orderer.example.com -f ./channel-artifacts/mychannel.tx --outputBlock ./channel-artifacts/mychannel.block --tls --cafile /root/go/src/github.com/hyperledger/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
+ res=1
+ peer channel create -o localhost:7050 -c mychannel --ordererTLSHostnameOverride orderer.example.com -f ./channel-artifacts/mychannel.tx --outputBlock ./channel-artifacts/mychannel.block --tls --cafile /root/go/src/github.com/hyperledger/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
+ res=1
+ peer channel create -o localhost:7050 -c mychannel --ordererTLSHostnameOverride orderer.example.com -f ./channel-artifacts/mychannel.tx --outputBlock ./channel-artifacts/mychannel.block --tls --cafile /root/go/src/github.com/hyperledger/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
+ res=1
Error: failed to create deliver client for orderer: orderer client failed to connect to localhost:7050: failed to create new connection: connection error: desc = "transport: error while dialing: dial tcp 127.0.0.1:7050: connect: connection refused"
Channel creation failed
Earlier, I took out "name: fabric_test" from docker/docker-compose-ca.yaml file, it was complaining about name field
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@farukansari i also faced the similar issue and i resolved it by applying below changes in docker-compose yaml files
changed networks to this
networks:
fabric_test:Replaced
image: hyperledger/fabric-orderer:latest
image: hyperledger/fabric-peer:latest
image: hyperledger/fabric-tools:latestTO
image: hyperledger/fabric-orderer:2.2
image: hyperledger/fabric-peer:2.2
image: hyperledger/fabric-tools:2.2
Run ./network.sh down and then ./network.sh up createChannel -ca -s couchdb
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I had the same issue. I didn't change anything but just take it down and restart, it worked.
Run ./network.sh down and then ./network.sh up createChannel -ca -s couchdb
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Post > @ChetanGadgilwar said:
@farukansari i also faced the similar issue and i resolved it by applying below changes in docker-compose yaml files
changed networks to this
networks:
fabric_test:Replaced
image: hyperledger/fabric-orderer:latest
image: hyperledger/fabric-peer:latest
image: hyperledger/fabric-tools:latestTO
image: hyperledger/fabric-orderer:2.2
image: hyperledger/fabric-peer:2.2
image: hyperledger/fabric-tools:2.2
Run ./network.sh down and then ./network.sh up createChannel -ca -s couchdb
This worked for me. The only thing I did differently was to update to version 2.2.2.
Thank you for the help!!
1
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