mkmavrykchain 6.25.9

A utility to generate k8s configs for a Mavryk blockchain

• Install mkmavrykchain
• Generate Helm Values
  • mkmavrykchain parameters
• Create Mavryk Chain

mkmavrykchain

Helper program to generate values for the Mavryk chain Helm chart

Prerequisites

To run mkmavrykchain, you must either have docker or pymavryk installed.

Installing Docker

To be consistent with other documentation in this project, we describe how to install docker with minikube. We need to install:

- [docker](https://docs.docker.com/get-docker/),
- [minikube](https://minikube.sigs.k8s.io/docs/),
- [helm](https://helm.sh/),
- and `python3`.

Start minikube and configure your shell environment to use minikube's Docker daemon:

minikube start

eval $(minikube docker-env)

Installing pymavryk

This is documented at: https://pymavryk.mavryk.org/quick_start.html#requirements

Install mkmavrykchain

mkdir mkmavrykchain && cd mkmavrykchain
python3 -m venv .venv
. .venv/bin/activate
pip install wheel && pip install mkmavrykchain

Set unbuffered IO for python:

export PYTHONUNBUFFERED=x

Generate Helm Values

Set as an environment variable the name you would like to give to your chain:

export CHAIN_NAME=my-chain

Your chain is uniquely defined by a set of values such as bootstrap account keys, chain id, timestamp...

To generate these values run:

mkmavrykchain $CHAIN_NAME

This command will create a yaml file in your current working directory: <$CHAIN_NAME>_values.yaml

If you configure your chain to run over a Zerotier VPN, mkmavrykchain will create an additional file for invitees to join your network: <$CHAIN_NAME>_invite_values.yaml.

mkmavrykchain parameters

You can explicitly specify some values by:

• passing CLI parameters to mkmavrykchain
• directly modifying the values yaml file generated by mkmavrykchain
• passing arguments to helm install or helm upgrade commands using the --set flag, which will selectively override the current yaml values

YAML Key	mkmavrykchain argument	Description	Default
	-h	mkmavrykchain help message
	-v	mkmavrykchain version
	--number-of-bakers	Number of baking nodes in the cluster	1
	--number-of-nodes	Number of non-baking nodes in the cluster	0
bootstrap_peers	--bootstrap-peers	Peer ips to connect to	[]
expected_proof_of_work	--expected-proof-of-work	Node identity generation difficulty	0
images.mavkit	--mavkit-docker-image	Version of the Mavkit docker image to run	mavrykdynamics/mavryk:v19.3
	--use-docker (--no...)	Use (or don't use) docker to generate keys rather than pymavryk	autodetect
zerotier_config.zerotier_network	--zerotier-network	Zerotier network id for external chain access
zerotier_config.zerotier_token	--zerotier-token	Zerotier token for external chain access

Create Mavryk Chain

Make sure you have the Mavryk Helm chart repo:

helm repo add mavryk-network https://mavryk-network.github.io/mavryk-helm-charts

Then install the Mavryk Helm chart:

helm install $CHAIN_NAME mavryk-network/mavryk-chain \
--values ./${CHAIN_NAME}_values.yaml \
--namespace mavryk-network --create-namespace