Introduction

This document describes:

• How to join the mainnet using Docker;

• How to use the Docker image;

• How to join the testnet using Docker;

• How to run a local network using Docker.

You must have docker installed on a host machine and be familiar how to operate docker containers.

Mainnet

The default node configuration is sufficient to join the mainnet:

mkdir -p ~/.aeternity/maindb
docker pull aeternity/aeternity
docker run -p 3013:3013 -p 3015:3015 \
    -v ~/.aeternity/maindb:/home/aeternity/node/data/mnesia \
    aeternity/aeternity

You should see the console output of the running node and a lot of information related to syncing with the network.

Verify if your node is connected to mainnet.

Testnet

To join the testnet a network_id with value ae_uat argument must be passed:

mkdir -p ~/.aeternity/testdb
docker run -p 3013:3013 -p 3015:3015 \
    -e AE__FORK_MANAGEMENT__NETWORK_ID=ae_uat \
    -v ~/.aeternity/testdb:/home/aeternity/node/data/mnesia \
    aeternity/aeternity

You should see the console output of the running node and a lot of information related to syncing with the network.

See how to persist the blockchain data and how to enable mining below.

Localnet

To run small local network for development and testing purposes, please refer to the localnet repository

Docker Image

Docker image is automatically build and published on DockerHub.

Please note that all the examples below:

• use the Docker -P which publish all exposed ports to the host interfaces, for good network connectivity refer to networking documentation how to setup firewall and/or port mapping to the host machine

• run the container in foreground mode for easier debugging (console output).

Version

All releases have their own docker image tag as well. Latest release is published behind latest docker image tag. Master branch of the source code is tagged as master.

To pull the latest release docker image run:

docker pull aeternity/aeternity

Always make sure you have the latest docker image prior running any of the below commands.

Node Configuration

Тo change the node configuration, a Docker bind mount should be used to mount the configuration file to a special path on the container (/home/aeternity/.aeternity/aeternity/aeternity.yaml). For example, assuming your configuration file is located at ~/.aeternity/myaeternity.yaml on the host machine:

docker run -p 3013:3013 -p 3015:3015 \
    -v ~/.aeternity/maindb:/home/aeternity/node/data/mnesia \
    -v ~/.aeternity/myaeternity.yaml:/home/aeternity/.aeternity/aeternity/aeternity.yaml \
    aeternity/aeternity

Configuration can also be changed by providing environment variables to the container:

mkdir -p ~/.aeternity/testdb
docker run -p 3013:3013 -p 3015:3015 \
    -e AE__FORK_MANAGEMENT__NETWORK_ID=ae_uat \
    -v ~/.aeternity/testdb:/home/aeternity/node/data/mnesia \
    aeternity/aeternity

More details about node configuration can be found in configuration documentation.

Persisting Data

The blockchain data is persisted by default at /home/aeternity/node/data/mnesia, inside the Docker container. In order to persist the data in a directory on the host machine, use Docker volumes.

Replace ~/.aeternity/myaedb with location of your choice where the data will be stored in.

mkdir -p ~/.aeternity/myaedb
docker run -p 3013:3013 -p 3015:3015 \
  -v ~/.aeternity/myaedb:/home/aeternity/node/data/mnesia \
  aeternity/aeternity

** Note that you cannot switch networks using the same database **

Mining

Mining is disabled by default. If you want to mine with docker you have to enable it in the configuration:

# ... SNIP
mining:
    autostart: true
    beneficiary: "encoded_beneficiary_pubkey_to_be_replaced"
    cuckoo:
        miner:
            executable: lean29-generic
            extra_args: ""
            edge_bits: 29
# SNIP ...

The example above uses the less memory intensive lean miner, if you want to use the default (memory intensive mean) miner, remove the mining.cuckoo section and increase the docker container memory at least 4GB.

You also need to provide beneficiary account in the configuration, please refer to the beneficiary section in the configuration documentation how to create one if you don't have yet.

For more information see miner configuration documentation.