# Celestia Validator Node - Mocha By [GLCstaked](https://paragraph.com/@glcstaked) · 2023-01-03 --- **Set up guide for a Validator Node on Celestia’s Mocha Testnet**, this also applies to set up a **Consensus full node**, up to Step 7. **Validator Node’s** are responsible for the proof-of-stake consensus on the Celestia network, validators put up stake to be economically incentivised to keep the network secure and in doing so get rewarded. **Consensus Full Node**, talk to other full nodes via peer-to-peer networking to verify the chain state. Consensus concerns how the network comes to agreement on the state of balances and accounts for the Celestia chain. Every Validator will run a consensus full node, but its not necessary for a full node to run a validator. Note there can only be 100 active validators, nodes with the highest stake + delegation. If a validator does not have the required votes it will be inactive, still a live peer on the network but will not be selected to produce blocks until it reaches the active set. **Hardware Requirements**: 4vCPU / 8GB RAM / 250GB SSD / 1 Gbps Download/100 Mbps Upload OS: Ubuntu Linux 20.04 (LTS) x64 See Official guides for [Celestia on setting up a Validator here](https://docs.celestia.org/nodes/validator-node), This document is designed for an easy step by step setup 1\. Setup Dependencies ---------------------- **Update the OS** sudo apt update && sudo apt upgrade -y **Install essential packages for Celestia** These are essential packages that are necessary to execute many tasks like downloading files, compiling and monitoring the node: sudo apt install curl tar wget clang pkg-config libssl-dev jq build-essential bsdmainutils git make ncdu -y **Change to Root User** Most of the packages to install work best under root, to enter root in the terminal with `sudo -i` which can be exited back to normal user with `exit` anytime. ![shell prefix under root](https://storage.googleapis.com/papyrus_images/2bb19027681e4d5845ecc0f73aa4904dd1f2a0a421e2962cde4eadd85d847fe7.png) shell prefix under root **Install Golang** remove any existing installation cd $HOME sudo rm -rf /usr/local/go sudo rm -rf ~/go Install Go and extract ver="1.19.4" wget "https://golang.org/dl/go$ver.linux-amd64.tar.gz" sudo tar -C /usr/local -xzf "go$ver.linux-amd64.tar.gz" rm "go$ver.linux-amd64.tar.gz" Add Go to PATH echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile source $HOME/.bash_profile Adding to the PATH variable is to allow Linux shell to know where to look for executable files is easy, to confirm this try `go version` ![You should have an output like this](https://storage.googleapis.com/papyrus_images/63c5712a8659748183cd3d8129f9292e07305b33d5e1633e5216705681d5c6e7.png) You should have an output like this 2\. Install Celestia Application -------------------------------- For Celestia Validator Node setup: running a Celestia App daemon with an internal Celestia Core node. [https://docs.celestia.org/developers/celestia-app/](https://docs.celestia.org/developers/celestia-app/), the application will be configured as a validator later. **Install Celestia App** create a binary file named celestia-appd inside $HOME/go/bin folder which will be used later to run the node. Check the Discord ‘Mocha Testnet’ announcements for the latest version (currently this is v0.11.0) cd $HOME git clone https://github.com/celestiaorg/celestia-app.git cd celestia-app git checkout v0.11.0 make install confirm installation with, in the directory celestia-appd version ![](https://storage.googleapis.com/papyrus_images/842fb40a86b5ebd8112fa235d2d0701d8dc0ffbac06ffa248e58451e452bfa44.png) 3\. Set Variables ----------------- CELESTIA_NODENAME="MY_NODE" CELESTIA_WALLET="MY_WALLET" CELESTIA_CHAIN="mocha" # do not change Save Variables echo "export CELESTIA_CHAIN=$CELESTIA_CHAIN export CELESTIA_NODENAME=${CELESTIA_NODENAME} export CELESTIA_WALLET=${CELESTIA_WALLET} " >> $HOME/.bash_profile source $HOME/.bash_profile _you should be able to echo the $VAR and see the correct result returned, or check the .bash\_profile itself_ 4\. Initialise Node ------------------- celestia-appd init $CELESTIA_NODENAME --chain-id $CELESTIA_CHAIN ![](https://storage.googleapis.com/papyrus_images/34f5cf9c6b915fc22a7befe50368688eabcd3af5846ec371e5c27ab9abd988f0.png) **Copy Genesis** Download network configs, and move to .celestia-app cd $HOME git clone https://github.com/celestiaorg/networks cp $HOME/networks/mocha/genesis.json $HOME/.celestia-app/config/ **Reset** celestia-appd tendermint unsafe-reset-all --home $HOME/.celestia-app 5\. Configurations ------------------ **Peers and Seeds** SEEDS="9aa8a73ea9364aa3cf7806d4dd25b6aed88d8152@celestia.seed.mzonder.com:11156" sed -i "s|^seeds *=.*|seeds = \"$SEEDS\"|" $HOME/.celestia-app/config/config.toml **Pruning and Snapshots** pruning_keep_recent="10000" pruning_interval=$(shuf -n1 -e 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97) snapshot_interval="5000" sed -i "s/^pruning *=.*/pruning = \"custom\"/;\ s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/;\ s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/;\ s/^snapshot-interval *=.*/snapshot-interval = $snapshot_interval/" $HOME/.celestia-app/config/app.toml This sets the values we want for certain variables stored in `$HOME/.celestia-app/config/app.toml` **Client Config** celestia-appd config chain-id $CELESTIA_CHAIN --home $HOME/.celestia-app celestia-appd config keyring-backend test 6\. Run Node with SystemD ------------------------- tee $HOME/celestia-appd.service > /dev/null <