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

# nitro-nodes-setup

## Setup Ansible

To get started, follow the [installation](../README.md#installation) guide to setup ansible on your machine

## Run a nitro node

The following commands have to be executed in [`nitro-nodes-setup`](./) directory

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

  ```bash
  cp nitro-vars-example.yml nitro-vars.yml
  ```

- Edit [`nitro-vars.yml`](./nitro-vars.yml) and fill in the following values

  ```bash
  # L1 WS endpoint
  nitro_l1_chain_url: ""

  # L2 WS endpoint
  nitro_l2_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: ""

  # Address of the bridge node
  bridge_contract_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: ""
  ```

- To run a nitro node, execute the `run-nitro-nodes.yml` Ansible playbook by running the following command.

  NOTE: By default, deployments are created in the `nitro-nodes-setup/out` directory. To change this location, update the `nitro_directory` variable in the [setup-vars.yml](./setup-vars.yml) file.

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

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

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

## Check Deployment Status

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

  - Check L1 nitro node logs:

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

  - Check L2 nitro node logs:

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

Follow steps from [Demo](https://git.vdb.to/cerc-io/nitro-stack/src/branch/main/nitro-bridge-demo.md#demo) to create mirror channels on L2, create virtual channel and make payments