diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml index 7e7eefa..6730737 100644 --- a/.github/workflows/mkdocs.yml +++ b/.github/workflows/mkdocs.yml @@ -1,10 +1,14 @@ -name: Deploy mkdocs site to Pages +name: Docs build on: pull_request: branches: ["main"] + paths: + - 'docs/**' push: branches: ["main"] + paths: + - 'docs/**' workflow_dispatch: permissions: @@ -41,7 +45,7 @@ jobs: - name: Install requirements run: pip install -r requirements.txt - name: Build with mkdocs - run: mkdocs build + run: mkdocs build --strict - name: Upload artifact uses: actions/upload-pages-artifact@v3 with: diff --git a/.gitignore b/.gitignore index eaf115d..57371a3 100644 --- a/.gitignore +++ b/.gitignore @@ -15,6 +15,9 @@ # vendor/ .idea/ +# mkdocs documentation +/site + .fabric *.log diff --git a/README.md b/README.md index 50e8709..b7bb6d7 100644 --- a/README.md +++ b/README.md @@ -1,10 +1,15 @@ # fabric-builder-k8s -Kubernetes [external chaincode builder](https://hyperledger-fabric.readthedocs.io/en/latest/cc_launcher.html) for Hyperledger Fabric. +The Kubernetes [external chaincode builder](https://hyperledger-fabric.readthedocs.io/en/latest/cc_launcher.html) for Hyperledger Fabric (k8s builder) is an alternative to Fabric's legacy built in Docker chaincode builder, which does not work in a Kubernetes deployment, and the preconfigured chaincode-as-a-service builder, which is more suited to chaincode development and test. -With the k8s builder, the Fabric administrator is responsible for [preparing a chaincode image](#chaincode-docker-image), publishing to a container registry, and [preparing a chaincode package](#chaincode-package) with coordinates of the contract's immutable image digest. -When Fabric detects the installation of a `type=k8s` contract, the builder assumes full ownership of the lifecycle of pods, containers, and network linkages necessary to communicate securely with the peer. +For more information, including how to deploy your first chaincode with the k8s builder, see the [k8s builder documentation](https://labs.hyperledger.org/fabric-builder-k8s/). + +To find out how to report issues, suggest enhancements and contribute to the k8s builder project, see the [contributing guide](CONTRIBUTING.md). +## Overview + +With the k8s builder, the Fabric administrator is responsible for preparing a [chaincode image](https://labs.hyperledger.org/fabric-builder-k8s/concepts/chaincode-image/), publishing to a container registry, and preparing a [chaincode package](https://labs.hyperledger.org/fabric-builder-k8s/concepts/chaincode-package/) with coordinates of the contract's immutable image digest. +When Fabric detects the installation of a `type=k8s` contract, the builder assumes full ownership of the lifecycle of pods, containers, and network linkages necessary to communicate securely with the peer. Advantages: @@ -19,160 +24,3 @@ Advantages: 🛡️ Pre-published chaincode images remove any and all dependencies on a root-level _docker daemon_. 🕵️ Pre-published chaincode images provide traceability and change management features (e.g. Git commit hash as image tag) - -The aim is for the builder to work as closely as possible with the existing [Fabric chaincode lifecycle](https://hyperledger-fabric.readthedocs.io/en/latest/chaincode_lifecycle.html), making sensible compromises for deploying chaincode on Kubernetes within those constraints. -(The assumption being that there are more people with Kubernetes skills than are familiar with the inner workings of Fabric!) - -For example: - -- The contents of the chaincode package must uniquely identify the chaincode functions executed on the ledger. - - In the case of the k8s builder the chaincode source code is not actually inside the package. In order not to break the Fabric chaincode lifecycle, the chaincode image must be specified using an immutable `@digest`, not a `:label` which can be altered post commit. - - See [Pull an image by digest (immutable identifier)](https://docs.docker.com/engine/reference/commandline/pull/#pull-an-image-by-digest-immutable-identifier) for more details. - - -- The Fabric peer manages the chaincode process, not Kubernetes. - - Running the chaincode in server mode, i.e. allowing the peer to initiate the gRPC connection, would make it possible to leave Kubernetes to manage the chaincode process by creating a chaincode deployment. - - Unfortunately due to limitations in Fabric's builder and launcher implementation, that is not possible and the peer expects to control the chaincode process. - - -**Status:** the k8s builder is [close to a version 1 release](https://github.com/hyperledger-labs/fabric-builder-k8s/milestone/1) and has been tested in a number of Kubernetes environments, deployment platforms, and provides semantic-revision aware [release tags](https://github.com/hyperledger-labs/fabric-builder-k8s/tags) for the external builder binaries. -The current status should be considered as STABLE and any bugs or enhancements delivered as GitHub Issues in conjunction with community PRs. - -## Usage - -The k8s builder can be run in cluster using the `KUBERNETES_SERVICE_HOST` and `KUBERNETES_SERVICE_PORT` environment variables, or it can connect using a `KUBECONFIG_PATH` environment variable. - -The following optional environment variables can be used to configure the k8s builder: - -- `FABRIC_K8S_BUILDER_DEBUG` whether to enable additional logging -- `FABRIC_K8S_BUILDER_NAMESPACE` specifies the namespace to deploy chaincode to -- `FABRIC_K8S_BUILDER_SERVICE_ACCOUNT` specifies the service account for the chaincode pod - -A `CORE_PEER_ID` environment variable is also currently required. - -External builders are configured in the `core.yaml` file, for example: - -``` - externalBuilders: - - name: k8s_builder - path: /opt/hyperledger/k8s_builder - propagateEnvironment: - - CORE_PEER_ID - - FABRIC_K8S_BUILDER_DEBUG - - FABRIC_K8S_BUILDER_NAMESPACE - - FABRIC_K8S_BUILDER_SERVICE_ACCOUNT - - KUBERNETES_SERVICE_HOST - - KUBERNETES_SERVICE_PORT -``` - -See [External Builders and Launchers](https://hyperledger-fabric.readthedocs.io/en/latest/cc_launcher.html) for details of Hyperledger Fabric builders. - -As well as configuring Fabric to use the k8s builder, you will need to [configure Kubernetes](docs/KUBERNETES_CONFIG.md) to allow the builder to start chaincode pods successfully. - -There are addition docs with more detailed usage instructions for specific Fabric network deployments: - -- [Kubernetes Test Network](docs/TEST_NETWORK_K8S.md) -- [Nano Test Network](docs/TEST_NETWORK_NANO.md) -- [Fabric Operator](docs/FABRIC_OPERATOR.md) -- [HLF Operator](docs/HLF_OPERATOR.md) - -## Chaincode Docker image - -Unlike the traditional chaincode language support for Go, Java, and Node.js, the k8s builder *does not* build a chaincode Docker image using Docker-in-Docker. -Instead, a chaincode Docker image must be built and published before it can be used with the k8s builder. - -The chaincode will have access to the following environment variables: - -- CORE_CHAINCODE_ID_NAME -- CORE_PEER_ADDRESS -- CORE_PEER_TLS_ENABLED -- CORE_PEER_TLS_ROOTCERT_FILE -- CORE_TLS_CLIENT_KEY_PATH -- CORE_TLS_CLIENT_CERT_PATH -- CORE_TLS_CLIENT_KEY_FILE -- CORE_TLS_CLIENT_CERT_FILE -- CORE_PEER_LOCALMSPID - -See the [sample contracts for Go, Java, and Node.js](samples/README.md) for basic docker images which will work with the k8s builder. - -## Chaincode package - -The k8s chaincode package file, which is installed by the `peer lifecycle chaincode install` command, must contain the Docker image name and digest of the chaincode being deployed. - -[Fabric chaincode packages](https://hyperledger-fabric.readthedocs.io/en/latest/cc_launcher.html#chaincode-packages) are `.tgz` files which contain two files: - -- metadata.json - the chaincode label and type -- code.tar.gz - source artifacts for the chaincode - -To create a k8s chaincode package file, start by creating an `image.json` file. -For example, - -```shell -cat << IMAGEJSON-EOF > image.json -{ - "name": "ghcr.io/hyperledger-labs/go-contract", - "digest": "sha256:802c336235cc1e7347e2da36c73fa2e4b6437cfc6f52872674d1e23f23bba63b" -} -IMAGEJSON-EOF -``` - -Note: the k8s chaincode package file uses digests because these are immutable, unlike tags. -The docker inspect command can be used to find the digest if required. - -``` -docker pull ghcr.io/hyperledger-labs/go-contract:v0.7.2 -docker inspect --format='{{index .RepoDigests 0}}' ghcr.io/hyperledger-labs/go-contract:v0.7.2 | cut -d'@' -f2 -``` - -Create a `code.tar.gz` archive containing the `image.json` file. - -```shell -tar -czf code.tar.gz image.json -``` - -Create a `metadata.json` file for the chaincode package. -For example, - -```shell -cat << METADATAJSON-EOF > metadata.json -{ - "type": "k8s", - "label": "go-contract" -} -METADATAJSON-EOF -``` - -Create the final chaincode package archive. - -```shell -tar -czf go-contract.tgz metadata.json code.tar.gz -``` - -Ideally the chaincode package should be created in the same CI/CD pipeline which builds the docker image. -There is an example [package-k8s-chaincode-action](https://github.com/hyperledgendary/package-k8s-chaincode-action) GitHub Action which can create the required k8s chaincode package. - -The GitHub Action repository includes a basic shell script which can also be used for automating the process above outside GitHub workflows. -For example, to create a basic k8s chaincode package using the `pkgk8scc.sh` helper script. - -```shell -curl -fsSL https://raw.githubusercontent.com/hyperledgendary/package-k8s-chaincode-action/main/pkgk8scc.sh -o pkgk8scc.sh && chmod u+x pkgk8scc.sh -./pkgk8scc.sh -l go-contract -n ghcr.io/hyperledger-labs/go-contract -d sha256:802c336235cc1e7347e2da36c73fa2e4b6437cfc6f52872674d1e23f23bba63b -``` - -## Chaincode deploy - -Deploy the chaincode package as usual, starting by installing the k8s chaincode package. - -```shell -peer lifecycle chaincode install go-contract.tgz -``` - -You can also use the `peer` command to get the chaincode package ID. - -```shell -export PACKAGE_ID=$(peer lifecycle chaincode calculatepackageid go-contract.tgz) && echo $PACKAGE_ID -``` diff --git a/docs/tutorials/bevel-operator.md b/docs/tutorials/bevel-operator.md index de49231..f13a2b5 100644 --- a/docs/tutorials/bevel-operator.md +++ b/docs/tutorials/bevel-operator.md @@ -99,7 +99,7 @@ kubectl auth can-i patch secrets --namespace default --as system:serviceaccount: ## Download a chaincode package -The [sample contracts for Go, Java, and Node.js](samples/README.md) publish a Docker image which the k8s builder can use _and_ a chaincode package file which can be used with the `peer lifecycle chaincode install` command. +The [sample contracts for Go, Java, and Node.js](https://github.com/hyperledger-labs/fabric-builder-k8s/tree/main/samples) publish a Docker image which the k8s builder can use _and_ a chaincode package file which can be used with the `peer lifecycle chaincode install` command. Use of a pre-generated chaincode package .tgz greatly simplifies the deployment, aligning with standard industry practices for CI/CD and git-ops workflows. Download a sample chaincode package, e.g. for the Go contract: diff --git a/docs/tutorials/fabric-operator.md b/docs/tutorials/fabric-operator.md index fd788ba..e276910 100644 --- a/docs/tutorials/fabric-operator.md +++ b/docs/tutorials/fabric-operator.md @@ -40,7 +40,7 @@ export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/temp/channel-msp/peerOrganizations/org ## Download a chaincode package -The [sample contracts for Go, Java, and Node.js](samples/README.md) 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. +The [sample contracts for Go, Java, and Node.js](https://github.com/hyperledger-labs/fabric-builder-k8s/tree/main/samples) 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: diff --git a/mkdocs.yml b/mkdocs.yml index 683ea78..6639e00 100644 --- a/mkdocs.yml +++ b/mkdocs.yml @@ -56,7 +56,7 @@ markdown_extensions: - pymdownx.details - pymdownx.emoji: emoji_generator: !!python/name:materialx.emoji.to_svg - emoji_index: !!python/name:materialx.emoji.twemoji + emoji_index: !!python/name:material.extensions.emoji.twemoji - pymdownx.highlight: anchor_linenums: true - pymdownx.inlinehilite