testnet-laconicd-stack/testnet-nitro-node.md

# testnet-nitro-node

## Prerequisites

* laconic-so: see [installation](https://git.vdb.to/cerc-io/stack-orchestrator#install)

* Ansible: see [installation](https://git.vdb.to/cerc-io/testnet-ops#installation)

* Check versions to verify installation:

  ```bash
  laconic-so version

  ansible --version
  ```

## Setup

* Clone the `cerc-io/testnet-ops` repository:

  ```bash
  git clone git@git.vdb.to:cerc-io/testnet-ops.git

  cd testnet-ops/nitro-node-setup
  ```

* Fetch the required Nitro node config:

  ```bash
  wget -O nitro-vars.yml https://git.vdb.to/cerc-io/testnet-laconicd-stack/raw/branch/main/ops/stage2/nitro-node-config.yml

  # Expected variables in the fetched config file:

  # nitro_l1_chain_url: ""
  # nitro_l2_chain_url: ""
  # na_address: ""
  # vpa_address: ""
  # ca_address: ""
  # bridge_contract_address: ""
  # bridge_nitro_address: ""
  # nitro_l1_bridge_multiaddr: ""
  # nitro_l2_bridge_multiaddr: ""
  ```

* TODO: Get Laconic tokens on your address

* Edit `nitro-vars.yml` and add the following variables:

  ```bash
  # Private key for your Nitro address
  nitro_sc_pk: ""

  # Private key for a funded account on L1
  # This account should have Laconic tokens for funding your Nitro channels
  nitro_chain_pk: ""

  # Multiaddr with publically accessible IP address / DNS for your L1 nitro node
  # Use port 3007
  # Example: "/ip4/192.168.x.y/tcp/3007"
  # Example: "/dns4/example.com/tcp/3007"
  nitro_l1_ext_multiaddr: ""

  # Multiaddr with publically accessible IP address / DNS for your L2 nitro node
  # Use port 3009
  # Example: "/ip4/192.168.x.y/tcp/3009"
  # Example: "/dns4/example.com/tcp/3009"
  nitro_l2_ext_multiaddr: ""
  ```

* Update the target dir in `setup-vars.yml`:

  ```bash
  # Set path to desired deployments dir
  DEPLOYMENTS_DIR=<path-to-deployments-dir>

  sed -i "s|^nitro_directory:.*|nitro_directory: $DEPLOYMENTS_DIR/nitro-node|" setup-vars.yml

  # Will create deployments at $DEPLOYMENTS_DIR/nitro-node/l1-nitro-deployment and $DEPLOYMENTS_DIR/nitro-node/l2-nitro-deployment
  ```

## Run

* Setup and run a Nitro node (L1+L2) by executing the `run-nitro-node.yml` Ansible playbook:

  ```bash
  LANG=en_US.utf8 ansible-playbook -i localhost, --connection=local run-nitro-node.yml --extra-vars='{ "target_host": "localhost"}' --user $USER
  ```

  * For skipping container build, run with `"skip_container_build" : true`:

    ```bash
    LANG=en_US.utf8 ansible-playbook -i localhost, --connection=local run-nitro-node.yml --extra-vars='{ "target_host": "localhost", "skip_container_build": true }' --user $USER
    ```

### Clean up

* Switch to deployments dir:

  ```bash
  cd $DEPLOYMENTS_DIR/nitro-node
  ```

* Stop all Nitro services running in the background:

  ```bash
  laconic-so deployment --dir l1-nitro-deployment stop
  laconic-so deployment --dir l2-nitro-deployment stop
  ```

* To stop all services and also delete data:

  ```bash
  laconic-so deployment --dir l1-nitro-deployment stop --delete-volumes
  laconic-so deployment --dir l2-nitro-deployment stop --delete-volumes

  # Remove deployment directories (deployments will have to be recreated for a re-run)
  sudo rm -r l1-nitro-deployment
  sudo rm -r l2-nitro-deployment
  ```