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TEST_NETWORK_K8S.md

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Kubernetes Test Network

The Kube Test Network includes support for the k8s builder by setting the TEST_NETWORK_CHAINCODE_BUILDER="k8s" environment variable.

Create a Sample Network

In the fabric-samples/test-network-k8s directory:

export PATH=$PWD:$PWD/bin:$PATH

export TEST_NETWORK_K8S_CHAINCODE_BUILDER_VERSION="v0.6.0"   # (optional - defaults to v0.4.0)
export TEST_NETWORK_CHAINCODE_BUILDER="k8s"

network kind 
network cluster init
network up
network channel create

(Check / follow the detailed log file for errors and progress at network-debug.log. E.g. in a separate shell:)

tail -f network-debug.log

Set the peer CLI environment

Make sure the build directory exists -- this will be created by network channel create.

Set the peer command environment, e.g. for org1, peer1:

export FABRIC_CFG_PATH=${PWD}/config/org1
export CORE_PEER_ADDRESS=org1-peer1.${TEST_NETWORK_DOMAIN:-vcap.me}:443
export CORE_PEER_MSPCONFIGPATH=${PWD}/build/enrollments/org1/users/org1admin/msp
export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/build/channel-msp/peerOrganizations/org1/msp/tlscacerts/tlsca-signcert.pem

Download a chaincode package

The sample contracts for Go, Java, and Node.js publish a Docker image which the k8s builder can use and a chaincode package file which can be used with the peer lifecycle chaincode install command. Use of a pre-generated chaincode package .tgz greatly simplifies the deployment, aligning with standard industry practices for CI/CD and git-ops workflows.

Download a sample chaincode package, e.g. for the Go contract:

curl -fsSL \
  https://github.com/hyperledger-labs/fabric-builder-k8s/releases/download/v0.7.2/go-contract-v0.7.2.tgz \
  -o go-contract-v0.7.2.tgz

Deploying chaincode

Deploy the chaincode package as usual, starting by installing the k8s chaincode package.

peer lifecycle chaincode install go-contract-v0.7.2.tgz

Export a PACKAGE_ID environment variable for use in the following commands.

export PACKAGE_ID=$(peer lifecycle chaincode calculatepackageid go-contract-v0.7.2.tgz) && echo $PACKAGE_ID

Note: the PACKAGE_ID must match the chaincode code package identifier shown by the peer lifecycle chaincode install command.

Approve the chaincode:

peer lifecycle \
  chaincode approveformyorg \
  --channelID     mychannel \
  --name          sample-contract \
  --version       1 \
  --package-id    ${PACKAGE_ID} \
  --sequence      1 \
  --orderer       org0-orderer1.${TEST_NETWORK_DOMAIN:-vcap.me}:443 \
  --tls --cafile  ${PWD}/build/channel-msp/ordererOrganizations/org0/orderers/org0-orderer1/tls/signcerts/tls-cert.pem

Commit the chaincode.

peer lifecycle \
  chaincode commit \
  --channelID     mychannel \
  --name          sample-contract \
  --version       1 \
  --sequence      1 \
  --orderer       org0-orderer1.${TEST_NETWORK_DOMAIN:-vcap.me}:443 \
  --tls --cafile  ${PWD}/build/channel-msp/ordererOrganizations/org0/orderers/org0-orderer1/tls/signcerts/tls-cert.pem

Inspect chaincode pods.

kubectl -n test-network describe pods -l app.kubernetes.io/created-by=fabric-builder-k8s

Running transactions

Query the chaincode metadata!

network chaincode query sample-contract '{"Args":["org.hyperledger.fabric:GetMetadata"]}'

Reset

Invariably, something in the recipe above will go awry. Look for additional diagnostics in network-debug.log and...

Reset the stage with:

network down && network up && network channel create