Run a Node

This guide assumes you're running on Ubuntu 22.04 LTS - the commands will probably work just fine on 20.04 LTS or Debian.

Basic machine setup

  1. 1.
    SSH into your node
  2. 2.
    Update your machine (Answer yes / ok to the prompts)
sudo apt update && sudo apt dist-upgrade -y
  1. 1.
    Install required tools
sudo apt install build-essential git unzip curl wget

Prepare environment

Create the kuji user and switch to it
sudo useradd -m kuji
sudo su -s /bin/bash -l kuji

Install Golang

  1. 1.
    Download go 1.20.x
# remove old go version
sudo rm -rvf /usr/local/go/
# download recent go version
# install go
sudo tar -C /usr/local -xzf go1.20.8.linux-amd64.tar.gz
# remove unneeded installer
rm go1.20.8.linux-amd64.tar.gz
# source go
cat <<EOF >> ~/.profile
export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export GO111MODULE=on
export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin
source ~/.profile
go version

Now we build!

  1. 1.
    Download the project code and checkout to testnet branch
git clone $HOME/kujira-core
cd $HOME/kujira-core
git checkout v0.9.1
  1. 1.
    Build and install kujirad (using the kuji user created above)
make install
  1. 1.
    Verify your binary is working
kujirad version

Running the node

If the build succeeds, you should now have the kujirad cli in your path (of the kuji user).
Try invoking with kujirad and you should see output like
Stargate CosmosHub App
kujirad [command]
Available Commands:
add-genesis-account Add a genesis account to genesis.json
collect-gentxs Collect genesis txs and output a genesis.json file
config Create or query an application CLI configuration file
debug Tool for helping with debugging your application
export Export state to JSON
gentx Generate a genesis tx carrying a self delegation
help Help about any command

Join the network

Now we can initialize the node and join the network.
  1. 1.
    Initialize node's configuration files
export CHAIN_ID=kaiyo-1 # mainnet
export CHAIN_ID=harpoon-4 # testnet
export MONIKER_NAME="<moniker name>"
kujirad init "${MONIKER_NAME}" --chain-id ${CHAIN_ID}
Replace the <moniker name> with your desired validator name.
  1. 1.
    Fetch the genesis genesis.json file
wget -O $HOME/.kujira/config/genesis.json
  1. 1.
    Download the addrbook.json file
wget -O $HOME/.kujira/config/addrbook.json
Fix your gas fee settings in $HOME/.kujira/config/app.toml
sed -i "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.00119ukuji,0.00150factory\/kujira1qk00h5atutpsv900x202pxx42npjr9thg58dnqpa72f2p7m2luase444a7\/uusk,0.00150ibc\/295548A78785A1007F232DE286149A6FF512F180AF5657780FC89C009E2C348F,0.000125ibc\/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2,0.00126ibc\/47BD209179859CDE4A2806763D7189B6E6FE13A17880FE2B42DE1E6C1E329E23,0.00652ibc\/3607EB5B5E64DD1C0E12E07F077FF470D5BC4706AFCBC98FE1BA960E5AE4CE07,617283951ibc\/F3AA7EF362EC5E791FE78A0F4CCC69FEE1F9A7485EB1A8CAB3F6601C00522F10,0.000288ibc\/EFF323CC632EC4F747C61BCE238A758EFDB7699C3226565F7C20DA06509D59A5,0.000125ibc\/DA59C009A0B3B95E0549E6BF7B075C8239285989FF457A8EDDBB56F10B2A6986,0.00137ibc\/A358D7F19237777AF6D8AD0E0F53268F8B18AE8A53ED318095C14D6D7F3B2DB5,0.0488ibc\/4F393C3FCA4190C0A6756CE7F6D897D5D1BE57D6CCB80D0BC87393566A7B6602,78492936ibc\/004EBF085BBED1029326D56BE8A2E67C08CECE670A94AC1947DF413EF5130EB2,964351ibc\/1B38805B1C75352B28169284F96DF56BDEBD9E8FAC005BDCC8CF0378C82AA8E7\"/;" $HOME/.kujira/config/app.toml
Where these individual prices are as follows:
And update the commit times in $HOME/.kujira/config/config.toml
sed -i "s/^timeout_commit *=.*/timeout_commit = \"1500ms\"/;" $HOME/.kujira/config/config.toml
Now start the node
$ kujirad start
kuji@fsn1-kuji-testnet-01:~$ kujirad start
12:22PM INF starting node with ABCI Tendermint in-process
12:22PM INF Starting multiAppConn service impl=multiAppConn module=proxy
12:22PM INF Starting localClient service connection=query impl=localClient module=abci-client
12:22PM INF Starting localClient service connection=snapshot impl=localClient module=abci-client
12:22PM INF Starting localClient service connection=mempool impl=localClient module=abci-client
12:22PM INF Starting localClient service connection=consensus impl=localClient module=abci-client
And then watch a whole bunch of log messages while your node is catching up. After making sure that it works, it's time to install it as a system level service so it always starts with the machine.

Register the node as a service

Drop out of the kuji user if you're still in that terminal session. Write exit or type ctrl+d on your keyboard.
  1. 1.
    Create a service definition file in /etc/systemd/system/kujirad.service. Example file that fits with our kuijrad install and kuji runtime user
Description=Kujira Daemon
ExecStart=/home/kuji/go/bin/kujirad start --log_level error
  1. 1.
    Reload your systemctl and enable the service:
sudo systemctl daemon-reload
sudo systemctl enable kujirad
  1. 1.
    And finally start the service:
sudo systemctl start kujirad
  1. 1.
    Check the status of the service:
systemctl status kujirad.service
It should return something like
● kujirad.service - Kujira Daemon
Loaded: loaded (/etc/systemd/system/kujirad.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2022-05-24 12:34:26 UTC; 5s ago
Main PID: 18490 (kujirad)
Tasks: 11 (limit: 4541)
Memory: 65.4M
CPU: 4.430s
CGroup: /system.slice/kujirad.service
└─18490 /home/kuji/go/bin/kujirad start
  1. 1.
    Check kujirad service logs
journalctl -u kujirad -f -o cat
And the sync status (make sure jq is installed)
kujirad status 2>&1 | jq .SyncInfo

Create the validator

Once your node has synced, it's time to create a validator. It can be done on a separate machine if preferred.
Create a key that will be the validators key.
kujirad keys add <wallet name>
Replace the <wallet name> with your desired validator wallet name.
Copy the seed phrase and put it somewhere safe.
You will need to make note of the address kujira... and use that in the faucet to get some coins. You can check your balance via
kujirad query bank balances kujira....
The next part is associating your node with your account, creating the validator
export PUBKEY=$(kujirad tendermint show-validator)
export CHAIN_ID=harpoon-4
export MONIKER_NAME="<your moniker>"
kujirad tx staking create-validator \
--moniker="${MONIKER_NAME}" \
--amount=1000000ukuji \
--gas-prices=1ukuji \
--pubkey=$PUBKEY \
--from=validator \
--yes \
--node=tcp://localhost:26657 \
--chain-id=${CHAIN_ID} \
--commission-max-change-rate=0.01 \
--commission-max-rate=0.20 \
--commission-rate=0.10 \
Now your node should be present
kujirad query staking validator $(kujirad keys show $KUJIRA_WALLET_ADDRESS --bech val -a)
or JSON output
kujirad query staking validators --limit 1000000 -o json | jq '.validators[] | select(.description.moniker=="${MONIKER_NAME}")'
Please remember to also back up $HOME/.kujira/config/priv_validator_key.json. If you lose this, you are toast.


Disk utilization

To help manage the disk size you can prune the blocks being kept. for this I use prime numbers pick your own in app.toml
pruning = "custom"
# These are applied if and only if the pruning strategy is custom.
pruning-keep-recent = "809"
pruning-keep-every = "0"
pruning-interval = "43"
You should also check what you are indexing
index-events = ["tx.hash", "tx.height"]

Adding more peers

You should modify /etc/security/limits.conf and add
* soft nofile 65535
* hard nofile 65535
You can then modify the config.toml to increase connections. This may cost you more in ingress/egress charges.
max_open_connections = 1900
max_num_inbound_peers = 50
max_num_outbound_peers = 50