Simple Celo Node

A simple docker compose script for launching Celo nodes.

Supported networks:

• Alfajores (Testnet)

Supported sync modes:

• Snap sync

Recommended Hardware

Testnets

• 16GB+ RAM
• 500 GB SSD (NVME Recommended)
• 100mb/s+ Download

Installation and Configuration

Install docker and docker compose

Note: If you're not logged in as root, you'll need to log out and log in again after installation to complete the docker installation.

Note: This command install docker and docker compose for Ubuntu. For windows and mac desktop or laptop, please use Docker Desktop. For other OS, please find instruction in Google.

# Update and upgrade packages
sudo apt-get update
sudo apt-get upgrade -y

### Docker and docker compose prerequisites
sudo apt-get install -y curl
sudo apt-get install -y gnupg
sudo apt-get install -y ca-certificates
sudo apt-get install -y lsb-release

### Download the docker gpg file to Ubuntu
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

### Add Docker and docker compose support to the Ubuntu's packages list
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
 
### Install docker and docker compose on Ubuntu
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

sudo usermod -aG docker $(whoami)
 
### Verify the Docker and docker compose install on Ubuntu
sudo docker run hello-world

(For non-root user) After logged out and logged back in, test if docker is working by running.

docker ps

It should returns an empty container list without having any error. Otherwise, restart your machine if there are errors.

Clone the Repository

git clone https://github.com/simple-celo-node/simple-optimism-node.git
cd simple-optimism-node

Copy .env.example to .env

Make a copy of .env.example named .env.

cp .env.example .env

Open .env with your editor of choice

Mandatory configurations

None, the default configuration can be used as is for running an Alfajores snap sync node.

Optional configurations

• OP_NODE__RPC_ENDPOINT - Specify the endpoint for the RPC of Layer 1 (e.g., Ethereum mainnet). For instance, you can use the free plan of Alchemy for the Ethereum mainnet.
• OP_NODE__L1_BEACON - Specify the beacon endpoint of Layer 1. You can use QuickNode for the beacon endpoint. For example: https://xxx-xxx-xxx.quiknode.pro/db55a3908ba7e4e5756319ffd71ec270b09a7dce
• OP_NODE__RPC_TYPE - Specify the service provider for the RPC endpoint you've chosen in the previous step. The available options are:
  • alchemy - Alchemy
  • quicknode - Quicknode (ETH only)
  • erigon - Erigon
  • basic - Other providers
• HEALTHCHECK__REFERENCE_RPC_PROVIDER - Specify the public RPC endpoint for Layer 2 network you want to operate on for healthchecking.
• OP_GETH__HISTORICAL_RPC - RPC Endpoint for fetching pre-L2 historical data
  • Leave blank if you want to self-host pre-bedrock historical node for high-throughput use cases such as subgraph indexing.
• IMAGE_TAG__[...] - Use custom docker image for specified components.
• PORT__[...] - Use custom port for specified components.

Operating the Node

Start

docker compose up -d --build

Will start the node in a detatched shell (-d), meaning the node will continue to run in the background. We recommended to add --build to make sure that latest changes are being applied.

View logs

docker compose logs -f --tail 10

To view logs of all containers.

docker compose logs <CONTAINER_NAME> -f --tail 10

To view logs for a specific container. Most commonly used <CONTAINER_NAME> are:

• op-geth
• op-node
• bedrock-init

Stop

docker compose down

Will shut down the node without wiping any volumes. You can safely run this command and then restart the node again.

Restart

docker compose restart

Will restart the node safely with minimal downtime but without upgrading the node.

Upgrade

Pull the latest updates from GitHub, and Docker Hub and rebuild the container.

git pull
docker compose pull
docker compose up -d --build

Will upgrade your node with minimal downtime.

Wipe [DANGER]

docker compose down -v

Will shut down the node and WIPE ALL DATA. Proceed with caution!

Monitoring

Estimate remaining sync time

Run progress.sh to estimate remaining sync time and speed.

./progress.sh

This will show the sync speed in blocks per minute and the time until sync is completed.

Chain ID: 10
Please wait
Blocks per minute: ...
Hours until sync completed: ...

Grafana dashboard

Grafana is exposed at http://localhost:3000 and comes with one pre-loaded dashboard ("Simple Node Dashboard"). Simple Node Dashboard includes basic node information and will tell you if your node ever falls out of sync with the reference L2 node or if a state root fault is detected.

Use the following login details to access the dashboard:

• Username: admin
• Password: optimism

Navigate over to Dashboards > Manage > Simple Node Dashboard to see the dashboard, see the following gif if you need help: