Install Common Pre-requisites¶
Following are the common pre-requiste software/client/platforms etc. needed before you can start deploying/operating blockchain networks using Hyperledger Bevel.
Git Repository¶
GitOps is a key concept for Hyperledger Bevel, so a Git repository is needed for Bevel (this can be a GitHub repository as well). Fork or import the Bevel GitHub repo to this Git repository.
The Operator should have a user created on this repo with read-write access to the Git Repository.
NOTE: Install Git Client Version > 2.31.0
Kubernetes¶
Hyperledger Bevel deploys the DLT/Blockchain network on Kubernetes clusters; hence, at least one Kubernetes cluster should be available. Bevel recommends one Kubernetes cluster per organization for production-ready projects. Also, a user needs to make sure that the Kubernetes clusters can support the number of pods and persistent volumes that will be created by Bevel.
NOTE: For the current release Bevel has been tested on Amazon EKS with Kubernetes version 1.19.
Bevel has been tested on Kubernetes >= 1.14 and <= 1.19
Also, install kubectl Client version v1.19.8
Please follow Amazon instructions to set-up your required Kubernetes cluster(s). To connect to Kubernetes cluster(s), you will also need kubectl Command Line Interface (CLI). Refer here for installation instructions, although Hyperledger Bevel configuration code (Ansible scripts) installs this automatically.
HashiCorp Vault¶
In this current release, Hashicorp Vault is mandatory for Hyperledger Bevel as the certificate and key storage solution; hence, at least one Vault server should be available. Bevel recommends one Vault per organization for production-ready projects.
Follow official instructions to deploy Vault in your environment.
NOTE: Recommended approach is to create one Vault deployment on one VM and configure the backend as a cloud storage.
Vault version should be 1.7.1
Internet Domain¶
Hyperledger Bevel uses Ambassador or HAProxy Ingress Controller for inter-cluster communication. So, for the Kubernetes services to be available outside the specific cluster, at least one DNS Domain is required. This domain name can then be sub-divided across multiple clusters and the domain-resolution configured for each. Although for production implementations, each organization (and thereby each cluster), must have one domain name.
NOTE: If single cluster is being used for all organizations in a dev/POC environment, then domain name is not needed.
Docker¶
Hyperledger Bevel provides pre-built docker images which are available on GitHub Repo. If specific changes are needed in the Docker images, then you can build them locally using the Dockerfiles provided. A user needs to install Docker CLI to make sure the environment has the capability of building these Dockerfiles to generate various docker images. Platform specific docker image details are mentioned here.
NOTE: Hyperledger Bevel uses minimum Docker version 18.03.0
You can check the version of Docker you have installed with the following command from a terminal prompt:
docker --version
For storing private docker images, a private docker registry can be used. Information such as registry url, username, password, etc. can be configured in the configuration file like Fabric configuration file.