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Published: May 13, 2022 License: Apache-2.0



Full-node software implementing the Terra protocol

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Table of Contents

What is Terra?

Terra is a public, open-source blockchain protocol that provides fundamental infrastructure for a decentralized economy and enables open participation in the creation of new financial primitives to power the innovation of money.

The Terra blockchain is secured by distributed consensus on staked asset Luna and natively supports the issuance of price-tracking stablecoins that are algorithmically pegged to major world currencies, such as UST, KRT, and SDT. Smart contracts on Terra run on WebAssembly and take advantage of core modules, such as on-chain swaps, price oracle, and staking rewards, to power modern DeFi apps. Through dynamic fiscal policy managed by community governance, Terra is an evolving, democratized economy directed by its users.

Terra Core is the reference implementation of the Terra protocol, written in Golang. Terra Core is built atop Cosmos SDK and uses Tendermint BFT consensus. If you intend to work on Terra Core source, it is recommended that you familiarize yourself with the concepts in those projects.



The easiest way to get started is by downloading a pre-built binary for your operating system. You can find the latest binaries on the releases page.

From Source

Step 1. Install Golang

Go v1.17+ or higher is required for Terra Core.

If you haven't already, install Golang by following the official docs. Make sure that your GOPATH and GOBIN environment variables are properly set up.

Step 2: Get Terra Core source code

Use git to retrieve Terra Core from the official repo and checkout the main branch. This branch contains the latest stable release, which will install the terrad binary.

git clone
cd core
git checkout main

Step 3: Build Terra core

Run the following command to install the executable terrad to your GOPATH and build Terra Core. terrad is the node daemon and CLI for interacting with a Terra node.

# COSMOS_BUILD_OPTIONS=rocksdb make install
make install

Step 4: Verify your installation

Verify that you've installed terrad successfully by running the following command:

terrad version --long

If terrad is installed correctly, the following information is returned:

name: terra
server_name: terrad
version: 0.5.0-rc0-9-g640fd0ed
commit: 640fd0ed921d029f4d1c3d88435bd5dbd67d14cd
build_tags: netgo,ledger
go: go version go1.17.2 darwin/amd64


NOTE: terracli has been deprecated and all of its functionalities have been merged into terrad.

terrad is the all-in-one command for operating and interacting with a running Terra node. For comprehensive coverage on each of the available functions, see the terrad reference information. To view various subcommands and their expected arguments, use the $ terrad --help command:

$ terrad --help Stargate Terra App Usage: terrad [command] Available Commands: add-genesis-account Add a genesis account to genesis.json collect-gentxs Collect genesis txs and output a genesis.json 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 init Initialize private validator, p2p, genesis, and application configuration files keys Manage your application's keys migrate Migrate genesis to a specified target version query Querying subcommands rosetta spin up a rosetta server start Run the full node status Query remote node for status tendermint Tendermint subcommands testnet Initialize files for a terrad testnet tx Transactions subcommands unsafe-reset-all Resets the blockchain database, removes address book files, and resets data/priv_validator_state.json to the genesis state validate-genesis validates the genesis file at the default location or at the location passed as an arg version Print the application binary version information Flags: -h, --help help for terrad --home string directory for config and data (default "/Users/$HOME/.terra") --log_format string The logging format (json|plain) (default "plain") --log_level string The logging level (trace|debug|info|warn|error|fatal|panic) (default "info") --trace print out full stack trace on errors Use "terrad [command] --help" for more information about a command.

Node Setup

Once you have terrad installed, you will need to set up your node to be part of the network.

Join the mainnet

The following requirements are recommended for running a columbus-5 mainnet node:

  • 4 or more CPU cores
  • At least 2TB of disk storage
  • At least 100mbps network bandwidth
  • An Linux distribution

For configuration and migration instructions for setting up a Columbus-5 mainnet node, visit The mainnet repo.

Terra Node Quick Start

terrad init nodename
wget -O ~/.terra/config/genesis.json
curl > ~/.terrad/config/addrbook.json
terrad start

Join a testnet

Several testnets might exist simultaneously. Ensure that your version of terrad is compatible with the network you want to join.

To set up a node on the latest testnet, visit the testnet repo.

Run a local testnet

The easiest way to set up a local testing environment is to run LocalTerra, which automatically orchestrates a complete testing environment suited for development with zero configuration.

Run a single node testnet

You can also run a local testnet using a single node. On a local testnet, you will be the sole validator signing blocks.

Step 1. Create network and account

First, initialize your genesis file to bootstrap your network. Create a name for your local testnet and provide a moniker to refer to your node:

terrad init --chain-id=<testnet_name> <node_moniker>

Next, create a Terra account by running the following command:

terrad keys add <account_name>

Step 2. Add account to genesis

Next, add your account to genesis and set an initial balance to start. Run the following commands to add your account and set the initial balance:

terrad add-genesis-account $(terrad keys show <account_name> -a) 100000000uluna,1000usd
terrad gentx <account_name> 10000000uluna --chain-id=<testnet_name>
terrad collect-gentxs

Step 3. Run Terra daemon

Now you can start your private Terra network:

terrad start

Your terrad node will be running a node on tcp://localhost:26656, listening for incoming transactions and signing blocks.

Congratulations, you've successfully set up your local Terra network!

Set up a production environment

NOTE: This guide only covers general settings for a production-level full node. You can find further details on considerations for operating a validator node by visiting the Terra validator guide.

This guide has been tested against Linux distributions only. To ensure you successfully set up your production environment, consider setting it up on an Linux system.

Increase maximum open files

terrad can't open more than 1024 files (the default maximum) concurrently.

You can increase this limit by modifying /etc/security/limits.conf and raising the nofile capability.

*                soft    nofile          65535
*                hard    nofile          65535

Create a dedicated user

It is recommended that you run terrad as a normal user. Super-user accounts are only recommended during setup to create and modify files.

Port configuration

terrad uses several TCP ports for different purposes.

  • 26656: The default port for the P2P protocol. Use this port to communicate with other nodes. While this port must be open to join a network, it does not have to be open to the public. Validator nodes should configure persistent_peers and close this port to the public.

  • 26657: The default port for the RPC protocol. This port is used for querying / sending transactions and must be open to serve queries from terrad. DO NOT open this port to the public unless you are planning to run a public node.

  • 1317: The default port for Lite Client Daemon (LCD), which can be enabled in ~/.terra/config/app.toml. The LCD provides an HTTP RESTful API layer to allow applications and services to interact with your terrad instance through RPC. Check the Terra REST API for usage examples. Don't open this port unless you need to use the LCD.

  • 26660: The default port for interacting with the Prometheus database. You can use Promethues to monitor an environment. This port is closed by default.

Run the server as a daemon


Keep terrad running at all times. The simplest solution is to register terrad as a systemd service so that it automatically starts after system reboots and other events.

Register terrad as a service

First, create a service definition file in /etc/systemd/system.

Sample file: /etc/systemd/system/terrad.service

Description=Terra Daemon

ExecStart=/data/terra/go/bin/terrad start



Modify the Service section from the given sample above to suit your settings. Note that even if you raised the number of open files for a process, you still need to include LimitNOFILE.

After creating a service definition file, you should execute systemctl daemon-reload.

Start, stop, or restart service

Use systemctl to control (start, stop, restart)

# Start
systemctl start terrad
# Stop
systemctl stop terrad
# Restart
systemctl restart terrad

Access logs

# Entire log
journalctl -t terrad
# Entire log reversed
journalctl -t terrad -r
# Latest and continuous
journalctl -t terrad -f




If you are interested in contributing to Terra Core source, please review our code of conduct.


This software is licensed under the Apache 2.0 license. Read more about it here.

© 2022 Terraform Labs, PTE LTD


Powering the innovation of money.


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