testnet-ops/nitro-nodes-setup/README.md

nitro-nodes-setup

Prerequisites

• Setup Ansible: To get started, follow the installation guide to setup ansible on your machine.

• Setup user with passwordless sudo: Follow steps from Setup a user to setup a new user with passwordless sudo

Setup

The following commands have to be executed in nitro-nodes-setup directory

• Copy the nitro-vars.example.yml vars file

  cp nitro-vars.example.yml nitro-vars.yml
  

• Edit nitro-vars.yml and fill in the following values

  # L1 WS endpoint
  nitro_chain_url: ""
  
  # Private key for your nitro address
  nitro_sc_pk: ""
  
  # Private key of the account on chain that is used for funding channels in Nitro node
  nitro_chain_pk: ""
  
  # Contract address of NitroAdjudicator
  na_address: ""
  
  # Contract address of VirtualPaymentApp
  vpa_address: ""
  
  # Contract address of ConsensusApp
  ca_address: ""
  
  # Multiaddr of the L1 bridge node
  nitro_l1_bridge_multiaddr: ""
  
  # Multiaddr of the L2 bridge node
  nitro_l2_bridge_multiaddr: ""
  
  # Multiaddr with publically accessible IP address / DNS for your L1 nitro node
  # Example: "/ip4/192.168.x.y/tcp/3009"
  # Example: "/dns4/example.com/tcp/3009"
  nitro_l1_ext_multiaddr: ""
  
  # Multiaddr with publically accessible IP address / DNS for your L2 nitro node
  nitro_l2_ext_multiaddr: ""
  

Run Nitro Node

• Create a new hosts.ini file:

  cp ../hosts.example.ini hosts.ini
  

• Edit the hosts.ini file:

  [<deployment_host>]
  <host_name> ansible_host=<target_ip> ansible_user=<ssh_user> ansible_ssh_common_args='-o ForwardAgent=yes'
  

  • Replace <deployment_host> with nitro_host
  • Replace <host_name> with the alias of your choice
  • Replace <target_ip> with the IP address or hostname of the target machine
  • Replace <ssh_user> with the username of the user that you set up on target machine (e.g. dev, ubuntu)

• Verify that you are able to connect to the host using the following command

  ansible all -m ping -i hosts.ini
  
  # Expected output:
  
  # <host_name> | SUCCESS => {
  #  "ansible_facts": {
  #      "discovered_interpreter_python": "/usr/bin/python3.10"
  #  },
  #  "changed": false,
  #  "ping": "pong"
  # }
  

• Copy and edit the nitro-vars.yml file as described in the local setup section

• Execute the run-nitro-nodes.yml Ansible playbook to deploy nitro nodes:

  LANG=en_US.utf8 ansible-playbook -i hosts.ini run-nitro-nodes.yml --extra-vars='{ "target_host": "nitro_host"}' --user $USER
  

  NOTE: By default, deployments are created in a out directory. To change this location, update the nitro_directory variable in the setup-vars.yml file

• For skipping container build, run with "skip_container_build" : true in the --extra-vars parameter:

  LANG=en_US.utf8 ansible-playbook -i hosts.ini run-nitro-nodes.yml --extra-vars='{ "target_host": "nitro_host", "skip_container_build": true }' --user $USER
  

Check Deployment Status

Run the following command in the directory where the deployments are created

• Check L1 nitro node logs:

  laconic-so deployment --dir l1-nitro-deployment logs nitro-node -f
  

• Check L2 nitro node logs:

  laconic-so deployment --dir l2-nitro-deployment logs nitro-node -f