Source code setup

Pre-install

To complete the installation it is necessary to fulfill some prerequisites. If you have already performed these, please proceed to the Installation chapter.

Ports

Mandatory: Always open the WebSocket port of your desired network, to enable communication with other peer nodes.

Optional: Open the corresponding HTTP port for your network, to make your node’s API reachable. For more information, see the diagram on the Interact with the API page.

To connect to the desired network with Lisk Core, please ensure that the corresponding ports listed below are open:

Network HTTP WebSocket

Mainnet

8000

8001

Testnet

7000

7001

Devnet

4000

5000

These are the default ports for connecting with the network. They can be altered later in the config.json file.

Create a new user

To run and manage a Lisk Core node in the future, please create a separate lisk user as described below:

  • Ubuntu

  • MacOS

The lisk user itself does not need any sudo rights to run the Lisk Core.

sudo adduser lisk              (1)
1 Create a new user.

It is not necessarily required to set up a lisk user, especially when you are running a local instance for development purposes.

However, if it is required then it is recommended to create the user using the macOS GUI: https://support.apple.com/en-gb/guide/mac-help/mtusr001/mac

Toolchain components

These are used for compiling dependencies.

  • Ubuntu

  • MacOS

sudo apt update
sudo apt install -y libtool automake autoconf curl build-essential python-minimal

Ensure that both XCode and Homebrew are installed.

brew install autoconf automake libtool

Git

Git is used for cloning and updating Lisk.

  • Ubuntu

  • MacOS

sudo apt install -y git
brew install git

PostgreSQL

To install PostgreSQL please follow the instructions described below:

It is recommended to use PostgreSQL with Docker for a quick and straight forward setup of PostgreSQL, and also PostgreSQL system-wide for production environments.
  • PostgresSQL system wide

  • PostgresSQL with Docker

See instructions for MacOS below.

Ubuntu

Firstly, install PostgreSQL on your machine as shown below:

sudo apt-get purge -y postgres* (1)
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
sudo apt install wget ca-certificates
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt update
sudo apt install postgresql-10
1 Remove all already installed PostgresSQL versions.

After installation, it should be possible to see the PostgresSQL database cluster by executing the following command:

pg_lsclusters

Drop the existing database cluster, and replace it with a cluster with the locale en_US.UTF-8 as shown below:

sudo pg_dropcluster --stop 10 main
sudo pg_createcluster --locale en_US.UTF-8 --start 10 main

Create a new database user called lisk and grant it rights to create databases. Then create the database with the Lisk user as the owner. In the last step, define the password for the Lisk user as shown below:

sudo -u postgres -i createuser --createdb lisk
sudo -u postgres -i createdb lisk_<NETWORK> --owner lisk
sudo -u postgres psql -d lisk_<NETWORK> -c "alter user lisk with password 'password';"

<NETWORK> may be main for Mainnet, test for Testnet or dev for Devnet.

Change password to a secure password of your choice. Do not forget to update this password in the Lisk Core configuration later on.

MacOS

Install PostgresSQL version 10 by executing the following command below:

brew install postgresql@10

Execute the following to have PostgreSQL commands, (e.g. psql) in your PATH as shown below:

echo 'export PATH="/usr/local/opt/postgresql@10/bin:$PATH"' >> ~/.bash_profile
source ~/.bash_profile

Start PostgreSQL, create the lisk user and the database by executing the following commands:

pg_ctl -D /usr/local/var/postgresql@10 start
createuser lisk
createdb --owner=lisk lisk_<NETWORK>
psql --dbname=lisk_<NETWORK> --command="ALTER USER lisk WITH PASSWORD 'password';"

<NETWORK> may be main for Mainnet, test for Testnet or dev for Devnet.

Change password to a secure password of your choice. Do not forget to update this password in the Lisk Core configuration later on.

Running PostgresSQL inside a Docker container will setup the correct version of PostgresSQL, and containerize it away from any existing versions you may have locally on your machine. Choose this setup if you are unfamiliar with PostgresSQL, or if other issues occur with a previously installed version of PostgresSQL. To perform the command below successfully, install Docker as described in the Lisk Core Docker image set up.

If you have other versions of PostgreSQL installed on your machine, ensure they are stopped before starting the Docker container.
docker run --name lisk_core_db -p 5432:5432 -e POSTGRES_USER=lisk -e POSTGRES_PASSWORD=password -e POSTGRES_DB=lisk_<NETWORK> -d postgres:10

The command above will install PostgreSQL version 10 (postgres:10) in a container with the name lisk_core_db, and binds the port 5432 of the container with the same port of the machine. As environment variables we expose POSTGRES_USER=lisk to create the lisk user and POSTGRES_PASSWORD=password to set the password for the Lisk user. Finally, the environment variable POSTGRES_DB creates the database lisk_<NETWORK> with the lisk user as the owner.

The above commands should be enough to set up the database ready to use with Lisk Core. To manage the Docker container, execute the following commands below:

docker stop lisk_core_db (1)
docker start lisk_core_db (2)
docker restart lisk_core_db (3)
docker rm lisk_core_db (4)
1 Stop the container.
2 Start the container.
3 Restart the container.
4 Remove the container.

In case it is required to access PostgresSQL inside the container via the CLI, execute the following command below:

docker exec --tty --interactive lisk_core_db psql -h localhost -U lisk -d postgres

Node.js

Node.js serves as the underlying engine for code execution. There are several different methods and version managers to install Node.js on your system. It is recommended to utilise one of the following two options shown below:

  • Option A - Node version manager

  • Option B - Node.js package

It is recommended to use a node version manager such as NVM. NVM is a bash script that enables the management of multiple active Node.js versions.

  1. Install NVM by following these official instructions.

  2. Install the correct version of Node.js using NVM by executing the following command below:

nvm install 10.15.3

If it is not required to use NVM or other package managers, it is possible to install the node package globally on your system as shown below:

Ubuntu

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get install -y nodejs

MacOS

brew install node@10.15.3

PM2 (optional)

Install PM2 for managing the start and stop of the application process in the background by executing the following command:

npm install pm2 -g

Redis (optional)

  • Ubuntu

  • MacOS

sudo apt install redis-server

Start Redis:

sudo service redis-server start

Stop Redis:

sudo service redis-server stop
brew install redis

Start Redis:

brew services start redis

Stop Redis:

brew services stop redis

Lisk does not run on the Redis default port of 6379. Instead it is configured to run on port: 6380. Therefore in order to run Lisk, there are two options available which are shown below:

  • A - Change the Lisk configuration

  • B - Change the Redis launch configuration

In the next installation phase, remember to update the Redis port configuration in config.json.

Update the launch configuration file on your system. Note that there are numerous methods to perform this.

The following is one example:

  1. Stop the Redis-server

  2. Edit the file redis.conf and change: port 6379 to port 6380

    • Ubuntu/Debian: /etc/redis/redis.conf

    • MacOS: /usr/local/etc/redis.conf

  3. Start the Redis-server

Now confirm that Redis is running on port 6380:

redis-cli -p 6380
ping

The following result should now be visible: PONG.

If all of the above steps have been successfully completed, then your system is ready for the installation of Lisk Core.

Installation

This section covers how to install Lisk Core from Source code. When completed, you will have a functioning node on the Lisk Network. If it is required to upgrade your current Lisk Core installation, please see Update Source code.

Login as the Lisk user

This user was created in the pre-installation steps. If you are already logged in to this user, please skip this following step:

sudo -u lisk -i

Installing Lisk from Source code

git clone https://github.com/LiskHQ/lisk-core.git (1)
cd lisk-core                  (2)
git checkout v2.1.6 -b v2.1.6 (3)
npm ci                        (4)
npm run build                 (5)
1 Clone the repository.
2 Navigate into the lisk-core root folder.
3 Check out the latest release tag.
4 Install dependencies.
5 Compile packages.
Please check for the latest release in Core releases.

To test that Lisk Core is built and configured correctly, execute the following commands to connect to the network:

node dist/index.js (1)
LISK_NETWORK=[network] node dist/index.js (2)
node dist/index.js --network [network] (3)
1 Default: connect to Devnet.
2 Use environment variables to overwrite config values, (recommended).
3 Use flags to overwrite config values.

Where [network] might be either devnet (default), alphanet, betanet, testnet or mainnet.

It is recommended to overwrite the config values with environment variables if necessary. Useable variables will always start with LISK_ prefix. Alternatively, the user may define a custom config.json, as described in Configuration of Lisk Core . You can view a list of available environment variables here.

If the process is running correctly, no errors are thrown in the logs. By default, errors will be logged in logs/[network]/lisk.log. Once the process is verified as running correctly, press CTRL+C and start the process with pm2. This will fork the process into the background and automatically recover the process if it fails.

pm2 start --name lisk dist/index.js -- --network [network]

Where [network] might be either devnet (default), alphanet, betanet, testnet or mainnet.

If you are not running Lisk locally, you will need to follow the API access guide to enable access.

In case you wish to configure your node further, e.g. if enabling forging is required, then please see the Configuration documentation.

Post-installation (optional)