Sei Node Setup Guide

System Requirements

Build Version and Genesis Table

Getting Started

The following is intended for Debian-based systems. Others like MacOS or Archlinux will differ slightly

Update and Upgrade System Packages

apt update && apt upgrade -y

Install Dependencies [use a package manager like apt]

apt install nano make build-essential gcc git jq chrony tar curl lz4 wget -y

Install Golang [do not use a package manager for this step]

1. Remove old Go version if necessary:

   rm -rvf /usr/local/go/

2. Install Golang:

   wget https://golang.org/dl/go1.21.1.linux-amd64.tar.gz
   tar -C /usr/local -xzf go1.21.1.linux-amd64.tar.gz
   rm go1.21.1.linux-amd64.tar.gz

3. Configure PATH and GOPATH (add to ~/.profile or ~/.bashrc to make persistent):

   export GOROOT=/usr/local/go
   export GOPATH=$HOME/go
   export GO111MODULE=on
   export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin

Install seid

1. Define the variables for your network and (optional) a moniker or name to assign your node: Replace these with real values, found in the reference table above

       VERSION=v1.2.3
       CHAIN_ID=mainnet-1
       GENESIS_URL=https://example.com/genesis.json
       MONIKER="your node name"

2. Clone the repository and install:

   cd ~/ && git clone https://github.com/sei-protocol/sei-chain.git
   cd sei-chain
   git checkout $VERSION
   make install

Initialize Node

1. Initialize the node:

   seid init $MONIKER --chain-id $CHAIN_ID

2. Download and place genesis file:

   wget -O genesis.json $GENESIS_URL
   mv genesis.json ~/.sei/config

Configure Node

1. Set persistent peers:

   sed -i '/^# Comma separated list of nodes to keep persistent connections to$/,/^$/ s/^persistent-peers = ""$/persistent-peers = "de8b1df70c7a8817ed121908e7c6e6059f4238f9@3.142.50.176:26656,7a962f3a928ca4e0e58355e6e798aba1ea253272@34.242.85.117:26656"/' ~/.sei/config/config.toml

2. Enable sei-db (dependent on snapshot provider):

   sed -i 's/^sc-enable = false/sc-enable = true/' ~/.sei/config/app.toml

Create Systemd Service

1. Create the service file:

   nano /etc/systemd/system/seid.service

2. Add the following content:

   [Unit]
   Description="Sei Daemon"
   After=network-online.target
    
   [Service]
   User=<USER>
   ExecStart=/home/<USER>/go/bin/seid start
   Restart=always
   RestartSec=3
   LimitNOFILE=8192
    
   [Install]
   WantedBy=multi-user.target

Download & Apply Snapshot

Find a snapshot from a provider like Polkachu (opens in a new tab), and either download, or define $SNAP_URL with it.

1. Download snapshot:

   wget -O $SNAP_URL $SNAP

2. Stop the node (if running as systemd service):

   systemctl stop seid

3. Unpack snapshot to location:

   lz4 -c -d $SNAP | tar -x -C $HOME/.sei

4. Start service and confirm operation:

   systemctl start seid
   systemctl status seid

5. Remove snapshot archive:

   rm -v $SNAP

Appendix

Node Types

• RPC / Full Nodes: Used for querying data or interacting with the chain. Default settings run RPC / full nodes.
• Archive Nodes: Maintain full state from genesis. Set min-retain-blocks=0 and pruning="nothing" in app.toml.
• State Sync Nodes: Provide snapshot data for other nodes to bootstrap. Set a value greater than zero for snapshot-interval under [statesync] in app.toml.
• Validator Nodes: Secure the chain by proposing and signing blocks. Set mode=validator in config.toml.

Default Service Ports

The standard service ports can be manually configured in $HOME/.sei/config/config.toml and $HOME/.sei/config/app.toml:

• 26656: P2P
• 26657: RPC
• 1317: REST
• 9090 : GRPC
• 8545: EVM RPC
• 8546: EVM Websocket
• 26660: Tendermint Prometheus Metrics Exporter