# Installation

<table><thead><tr><th width="172">Chain ID</th><th width="425">                                               Version </th><th>        Custom Port</th></tr></thead><tbody><tr><td>prysm-devnet-1</td><td>                       Node Version: 0.1.0-devnet</td><td>               25</td></tr></tbody></table>

Official Documentation Recommended Hardware: 4 Cores, 8GB RAM, 200GB of storage (NVME)

```bash
# install dependencies, if needed
sudo apt update && sudo apt upgrade -y
sudo apt install curl git wget htop tmux build-essential jq make lz4 gcc unzip -y
```

Node NameWalletPortPruningPruning Keep RecentPruning Interval

```bash
# install go, if needed
cd $HOME
VER="1.22.6"
wget "https://golang.org/dl/go$VER.linux-amd64.tar.gz"
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf "go$VER.linux-amd64.tar.gz"
rm "go$VER.linux-amd64.tar.gz"
[ ! -f ~/.bash_profile ] && touch ~/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:~/go/bin" >> ~/.bash_profile
source $HOME/.bash_profile
[ ! -d ~/go/bin ] && mkdir -p ~/go/bin

# set vars
echo "export WALLET="wallet"" >> $HOME/.bash_profile
echo "export MONIKER="test"" >> $HOME/.bash_profile
echo "export PRYSM_CHAIN_ID="prysm-devnet-1"" >> $HOME/.bash_profile
echo "export PRYSM_PORT="25"" >> $HOME/.bash_profile
source $HOME/.bash_profile

# download binary
cd $HOME
wget -O zenrockd.zip https://github.com/Zenrock-Foundation/zrchain/releases/download/v5.16.20/zenrockd.zip
unzip zenrockd.zip
rm zenrockd.zip
chmod +x $HOME/zenrockd
sudo mv $HOME/zenrockd $HOME/go/bin/

# config and init app
prysmd config node tcp://localhost:${PRYSM_PORT}657
prysmd config keyring-backend os
prysmd config chain-id prysm-devnet-1
prysmd init "test" --chain-id prysm-devnet-1

# download genesis and addrbook
wget -O $HOME/.prysm/config/genesis.json https://server-5.itrocket.net/testnet/prysm/genesis.json
wget -O $HOME/.prysm/config/addrbook.json  https://server-5.itrocket.net/testnet/prysm/addrbook.json

# set seeds and peers
SEEDS="bc0f324931f609be479ce6579f159e5d0bebc929@prysm-testnet-peer.monkeylabs.me:34656,1b5b6a532e24c91d1bc4491a6b989581f5314ea5@prysm-testnet-seed.itrocket.net:25656"
PEERS="ff15df83487e4aa8d2819452063f336269958d09@prysm-testnet-peer.itrocket.net:25657,fb04a6f5dbddefca240d0821e25ec219737bc6cb@65.109.27.148:29656,df2ca03803f969b6f14bb88bd4af4dcfb0e61701@65.109.111.234:25656,aea4d8e0b0036a435d49920c9e1fadc9f02278ca@65.108.203.61:44656,a53a6c4abbd4e4e212639dbff72e2c7295fd8cd8@213.199.43.242:29656,0b4b6be062055f913933597fe7d84c65286d444b@144.76.70.103:32656,cb36b0bf594bbb205827efd65fb2be0c82b4f854@176.9.126.78:20656,f3dd019aafbee0483de1d5133f03e880d96cde6a@65.108.234.158:23656,e89a44eb3d9100a312f435b274921f7d7a958d7e@95.216.73.182:26656,22b6d4f817ed345b7ac4e736715a985d8ee75004@193.34.212.80:33656,2e36231490438bf5ecd8b32e2f36b70c7dd9b035@157.173.105.31:29656"
sed -i -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*seeds *=.*/seeds = \"$SEEDS\"/}" \
       -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*persistent_peers *=.*/persistent_peers = \"$PEERS\"/}" $HOME/.prysm/config/config.toml

# set custom ports in app.toml
sed -i.bak -e "s%:1317%:${PRYSM_PORT}317%g;
s%:8080%:${PRYSM_PORT}080%g;
s%:9090%:${PRYSM_PORT}090%g;
s%:9091%:${PRYSM_PORT}091%g;
s%:8545%:${PRYSM_PORT}545%g;
s%:8546%:${PRYSM_PORT}546%g;
s%:6065%:${PRYSM_PORT}065%g" $HOME/.prysm/config/app.toml

# set custom ports in config.toml file
sed -i.bak -e "s%:26658%:${PRYSM_PORT}658%g;
s%:26657%:${PRYSM_PORT}657%g;
s%:6060%:${PRYSM_PORT}060%g;
s%:26656%:${PRYSM_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${PRYSM_PORT}656\"%;
s%:26660%:${PRYSM_PORT}660%g" $HOME/.prysm/config/config.toml

# config pruning
sed -i -e "s/^pruning *=.*/pruning = \"custom\"/" $HOME/.prysm/config/app.toml 
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" $HOME/.prysm/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"19\"/" $HOME/.prysm/config/app.toml

# set minimum gas price, enable prometheus and disable indexing
sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "0.0uprysm"|g' $HOME/.prysm/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.prysm/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.prysm/config/config.toml

# create service file
sudo tee /etc/systemd/system/prysmd.service > /dev/null <<EOF
[Unit]
Description=Prysm node
After=network-online.target
[Service]
User=$USER
WorkingDirectory=$HOME/.prysm
ExecStart=$(which prysmd) start --home $HOME/.prysm
Restart=on-failure
RestartSec=5
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF

# reset and download snapshot
prysmd tendermint unsafe-reset-all --home $HOME/.prysm
if curl -s --head curl https://server-5.itrocket.net/testnet/prysm/prysm_2024-12-28_4187200_snap.tar.lz4 | head -n 1 | grep "200" > /dev/null; then
  curl https://server-5.itrocket.net/testnet/prysm/prysm_2024-12-28_4187200_snap.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.prysm
    else
  echo "no snapshot found"
fi

# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable prysmd
sudo systemctl restart prysmd && sudo journalctl -u prysmd -fo cat
```

### Automatic Installation <a href="#auto-installation" id="auto-installation"></a>

pruning: custom: 100/0/19 | indexer: null

```bash
source <(curl -s https://itrocket.net/api/testnet/prysm/autoinstall/)
```

### Create wallet <a href="#create-wallet" id="create-wallet"></a>

```bash
# to create a new wallet, use the following command. don’t forget to save the mnemonic
prysmd keys add $WALLET

# to restore exexuting wallet, use the following command
prysmd keys add $WALLET --recover

# save wallet and validator address
WALLET_ADDRESS=$(prysmd keys show $WALLET -a)
VALOPER_ADDRESS=$(prysmd keys show $WALLET --bech val -a)
echo "export WALLET_ADDRESS="$WALLET_ADDRESS >> $HOME/.bash_profile
echo "export VALOPER_ADDRESS="$VALOPER_ADDRESS >> $HOME/.bash_profile
source $HOME/.bash_profile

# check sync status, once your node is fully synced, the output from above will print "false"
prysmd status 2>&1 | jq 

# before creating a validator, you need to fund your wallet and check balance
prysmd query bank balances $WALLET_ADDRESS 
```

### Node Sync Status Checker <a href="#node-sync-status" id="node-sync-status"></a>

```bash
#!/bin/bash
rpc_port=$(grep -m 1 -oP '^laddr = "\K[^"]+' "$HOME/.prysm/config/config.toml" | cut -d ':' -f 3)
while true; do
  local_height=$(curl -s localhost:$rpc_port/status | jq -r '.result.sync_info.latest_block_height')
  network_height=$(curl -s https://prysm-testnet-rpc.itrocket.net/status | jq -r '.result.sync_info.latest_block_height')

  if ! [[ "$local_height" =~ ^[0-9]+$ ]] || ! [[ "$network_height" =~ ^[0-9]+$ ]]; then
    echo -e "\033[1;31mError: Invalid block height data. Retrying...\033[0m"
    sleep 5
    continue
  fi

  blocks_left=$((network_height - local_height))
  if [ "$blocks_left" -lt 0 ]; then
    blocks_left=0
  fi

  echo -e "\033[1;33mNode Height:\033[1;34m $local_height\033[0m \033[1;33m| Network Height:\033[1;36m $network_height\033[0m \033[1;33m| Blocks Left:\033[1;31m $blocks_left\033[0m"

  sleep 5
done
```

### Create validator <a href="#create-validator" id="create-validator"></a>

MonikerIdentityDetailsAmount, uprysmCommission rateCommission max rateCommission max change rateWebsite

```bash
cd $HOME
# Create validator.json file
echo "{\"pubkey\":{\"@type\":\"/cosmos.crypto.ed25519.PubKey\",\"key\":\"$(prysmd comet show-validator | grep -Po '\"key\":\s*\"\K[^"]*')\"},
    \"amount\": \"1000000uprysm\",
    \"moniker\": \"test\",
    \"identity\": \"\",
    \"website\": \"\",
    \"security\": \"\",
    \"details\": \"I love blockchain ❤️\",
    \"commission-rate\": \"0.1\",
    \"commission-max-rate\": \"0.2\",
    \"commission-max-change-rate\": \"0.01\",
    \"min-self-delegation\": \"1\"
}" > validator.json
# Create a validator using the JSON configuration
prysmd tx staking create-validator validator.json \
    --from $WALLET \
    --chain-id prysm-devnet-1 \
	--gas auto --gas-adjustment 1.5
	
```

### Monitoring <a href="#monitoring" id="monitoring"></a>

If you want to have set up a monitoring and alert system use [our cosmos nodes monitoring guide with tenderduty](https://teletype.in/@itrocket/bdJAHvC_q8h)

### Security <a href="#security" id="security"></a>

To protect you keys please don\`t share your privkey, mnemonic and follow basic security rules

#### Set up ssh keys for authentication <a href="#ssh" id="ssh"></a>

You can use this [guide](https://www.digitalocean.com/community/tutorials/how-to-set-up-ssh-keys-on-ubuntu-20-04) to configure ssh authentication and disable password authentication on your server

#### Firewall security <a href="#firewall" id="firewall"></a>

Set the default to allow outgoing connections, deny all incoming, allow ssh and node p2p port

```bash
sudo ufw default allow outgoing 
sudo ufw default deny incoming 
sudo ufw allow ssh/tcp 
sudo ufw allow ${PRYSM_PORT}656/tcp
sudo ufw enable
```

### Delete node <a href="#delete" id="delete"></a>

```bash
sudo systemctl stop prysmd
sudo systemctl disable prysmd
sudo rm -rf /etc/systemd/system/prysmd.service
sudo rm $(which prysmd)
sudo rm -rf $HOME/.prysm
sed -i "/PRYSM_/d" $HOME/.bash_profile
```
