If you want to build your own node without relying on pre-built images, you can follow these instructions. These instructions are specifically generated for an Ubuntu 20.04 LTS system, but they should work with other systems as well. Building a node allows you to process and store the transaction history of either OP Mainnet or OP Sepolia. ### Hardware Recommendations Before starting the build process, it is important to consider the hardware requirements. For OP Mainnet, it is recommended to have a 2TB SSD, as the current archive node usage is approximately 1TB. On the other hand, for OP Sepolia, a 256GB SSD is sufficient, as the current full node usage is around 1.6GB and the archive node usage is approximately 5.6GB. ### Software Requirements

Software	Version	Installation command(s)
Ubuntu	20.04 LTS
git, curl, jq, make, and zstd	OS default	sudo apt update, sudo apt install -y git curl make jq zstd
Go	1.20	wget https://go.dev/dl/go1.20.linux-amd64.tar.gz, tar xvzf go1.20.linux-amd64.tar.gz, sudo cp go/bin/go /usr/bin/go, sudo mv go /usr/lib, echo export GOROOT=/usr/lib/go >> ~/.bashrc
Node	18.17.1	nvm install 18.17.1, nvm use 18.17.1
pnpm	8.6.12	sudo npm install -g pnpm
Foundry	0.2.0	curl -L https://foundry.paradigm.xyz \| bash, . ~/.bashrc, foundryup

### Building the Optimism Monorepo 1. Navigate to your working directory. 2. Clone the [Optimism Monorepo](https://github.com/ethereum-optimism/optimism). `git clone https://github.com/ethereum-optimism/optimism.git` 3. Install required modules. `cd optimism pnpm install` 4. Build the various packages inside of the Optimism Monorepo. `make op-node pnpm build` ### Building an op-geth To build an op-geth node, you need to follow these steps: 1. Navigate to your working directory. 2. Clone [op-geth](https://github.com/ethereum-optimism/op-geth). `git clone https://github.com/ethereum-optimism/op-geth.git` 3. Build op-geth. `cd op-geth make geth` ### Building a l2geth To build a l2geth node, the process is similar but with a few variations: 1. Navigate to your working directory. 2. Clone [l2geth](https://github.com/ethereum-optimism/optimism-legacy) `git clone https://github.com/ethereum-optimism/optimism-legacy.git` 3. Build l2geth `cd optimism-legacy/l2geth make`