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laconicd/testnet/genesis-validators.md
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2022-10-13 11:26:07 +05:30

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Validator Guide for laconic_81337-4 Testnet

Hardware Prerequisites

Supported

  • Operating System (OS): Ubuntu 20.04
  • CPU: 1 core
  • RAM: 2GB
  • Storage: 25GB SSD

Recommended

  • Operating System (OS): Ubuntu 20.04
  • CPU: 2 core
  • RAM: 4GB
  • Storage: 50GB SSD

Network Prerequisites

  • TCP 26656 for Peer-to-Peer Network Communication
  • TCP 26660 for Prometheus Metrics (doesn't have to be exposed publicly)

Validator Setup

Install required software packages

# Update Ubuntu
sudo apt update
sudo apt upgrade -y

# Install required software packages
sudo apt install git curl build-essential make jq -y

Install Go

# Remove any existing installation of `go`
sudo rm -rf /usr/local/go

# Install Go version 1.17.2
curl https://dl.google.com/go/go1.17.2.linux-amd64.tar.gz | sudo tar -C/usr/local -zxvf -

# Update env variables to include go
cat <<'EOF' >>$HOME/.profile
export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export GO111MODULE=on
export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin
EOF

source $HOME/.profile

Check the version of go installed

go version

# Should return something like: go version go1.17.2 linux/amd64

Install laconic

git clone https://github.com/cerc-io/laconicd.git
cd laconicd

# Checkout main branch
git fetch --all
git checkout main

# Build and install laconic
make install

Verify your installation

laconicd version --long

On running the above command, you should see a similar response like this. Make sure that the version and commit hash are accurate

name: laconic
server_name: laconicd

Initialize Validator Node

Not required if you have already initialized before

# Initialize the validator node
laconicd init <your-node-moniker> --chain-id laconic_81337-4

Running the above commands will initialize the validator node with default configuration. The config files will be saved in the default location (~/.laconicd/config).

NOTE: Backup your node and validator keys. You will need to use these keys at a later point in time.

Overwrite Validator Initialization from previous testnet

Required for laconic_81337-4

First we have to reset the previous genesis state (only because the laconic_81337-3 testnet failed) whereafter we can initialize the validator node for laconic_81337-4

# Stop your node (in case it was still running)
systemctl stop laconicd

# Keep a backup of your old validator directory
cp -a ~/.laconicd ~/backup-laconic_81337-2

# Reset the state of your validator
laconicd tendermint unsafe-reset-all --home $HOME/.laconicd

# Remove your previous genesis transactions
rm $HOME/.laconicd/config/gentx/gentx*.json

# Overwrite your genesis state with the new chain-id
laconicd init --overwrite <your-node-moniker> --chain-id laconic_81337-4

Running the above commands will re-initialize the validator node with default configuration. The config files will be saved in the default location (~/.laconicd/config).

NOTE: Backup your node and validator keys. You will need to use these keys at a later point in time.

Create Account keys

If you have participated in a previous testnet and have a mnemonic phrase, use below command to recover your account:

laconicd keys add <key-name> --recover

To create a new account use:

laconicd keys add <key-name>

NOTE: Save the mnemonic and related account details (public key). You will need to use the mnemonic and / or private key to recover accounts at a later point in time.

Add Genesis Account

NOTE: Don't add more than 12,900 CHK , if you add more than that, your gentx will be ignored.

laconicd add-genesis-account <key-name> 12900000000000000000000achk --keyring-backend os

Create Your gentx transaction file

laconicd gentx <key-name> 12900000000000000000000achk \
  --pubkey=$(laconicd tendermint show-validator) \
  --chain-id="laconic_81337-4" \
  --moniker="<your-moniker-name>" \
  --website="<your-validator-website>" \
  --details="<your-validator-description>" \
  --identity="<your-keybase-public-key>" \
  --commission-rate="0.10" \
  --commission-max-rate="0.20" \
  --commission-max-change-rate="0.01" \
  --min-self-delegation="1"

NOTE:

  • <key-name> and chain-id are required. other flags are optional
  • Don't change the amount value while creating your gentx
  • Genesis transaction file will be saved in ~/.laconicd/config/gentx folder

Submit Your gentx

Submit your gentx file to the https://github.com/cerc-io/laconic-testnet repository in the following format: <validator-moniker>-gentx.json

NOTE: (Do NOT use spaces in the file name)

To submit the gentx file, follow the below process:

The genesis file will be published in the laconic_81337-4/config/ folder within the https://github.com/cerc-io/laconic-testnet repository.

CONTINUE WITH BELOW STEPS ONLY AFTER GENESIS FILE HAS BEEN PUBLISHED

Adjust validator node configuration

# Set seed & peers variable
seeds="<seeds node list here>"
peers="<peers node list here>"

# Update seeds, persistent_peers and prometheus parameters in config.toml
sed -i.bak -e "s/^seeds *=.*/seeds = \"$seeds\"/; s/^persistent_peers *=.*/persistent_peers = \"$peers\"/; s/^prometheus *=.*/prometheus = true/" $HOME/.laconicd/config/config.toml

# Create systemd validator service
sudo tee /etc/systemd/system/laconicd.service > /dev/null <<EOF
[Unit]
Description=laconicd Daemon
After=network-online.target

[Service]
User=$USER
ExecStart=$(which laconicd) start --mode validator --gql-playground --gql-server --log_level=warn
Restart=always
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

#Reload systemd and start the validator node
sudo systemctl daemon-reload
sudo systemctl enable laconicd
sudo systemctl start laconicd

Check status of service

sudo systemctl status laconicd

Helpful Commands

# Check logs
journalctl -u laconicd

# Most recent logs
journalctl -xeu laconicd

# Logs from previous day
journalctl --since "1 day ago" -u laconicd

# Check logs with follow flag
journalctl -f -u laconicd

# Check discovered peers
curl http://localhost:26657/net_info

# Check network consensus state
curl http://localhost:26657/consensus_state

# Check the sync status of your validator node
laconicd status | jq .SyncInfo