Validator Guide - Linux
An initial set of instructions for running a Jupiter Callisto validator. These instructions are intended to be followed by competent Linux System admins. Lack of knowledge could lead to loss of funds!


These instructions were written for the Jupiter Testnet (NOT MAINNET) during initial testing of the Cosmos-based Jupiter blockchain. These settings will not work for mainnet and may need to be updated for future testnets. Please report any problems in Jupiter Discord

Running a Validator

Add swap

For a more verbose set of instructions use Digital Ocean's guide (the original source of these commands).
NOTE: 2 GB may not be adequate, read about calculating the proper swap space
df -h
sudo fallocate -l 2G /swapfile
ls -lh /swapfile
sudo chmod 600 /swapfile
ls -lh /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon --show
free -h
sudo cp /etc/fstab /etc/fstab.bak
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

Install Go

sudo su
rm -rf /usr/local/go && tar -C /usr/local -xzf go1.18.3.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
source ~/.profile
go version

Install jq

sudo apt install jq

Clone the Jupiter repository

git clone
cd jupiter-ng
git checkout dev

Move jupiterd binary:

sudo mv ./jupiterd /usr/local/bin

Run initializer:

Let it run until you see output that blocks are being executed & committed. Then kill it with CTRL + C

Move Genesis:

cp ./testnet-genesis.json ~/.ethermintd/config/genesis.json

Delete Chain Data from Init:

Warning: This command can be dangerous if not copied correctly!
cd ~/.ethermintd/data/
rm -rf application.db blockstore.db cs.wal evidence.db snapshots state.db tx_index.db
cd ~/jupiter-ng

Add a good seed to seeds= or persistent_peers= in ~/.ethermintd/config/config.toml:

# Comma separated list of seed nodes to connect to
seeds = ""
# Comma separated list of nodes to keep persistent connections to
persistent_peers = "[email protected]:26656"

Fire up the box

jupiterd start --pruning=nothing --evm.tracer=json --trace --log_level info --minimum-gas-prices=0.0001ajup --json-rpc.api eth,txpool,personal,net,debug,web3,miner --api.enable