Validator Overview
Run a validator on lumera protocol testnet and help secure the network.
What is a Lumera Validator?
Lumera is a Cosmos SDK Layer-1 blockchain secured by CometBFT (formerly known as Tendermint) consensus. Validators produce blocks, vote on governance proposals, and maintain the integrity of the network. In return they earn staking rewards and commission from their delegators.
Validators who additionally register as Supernodes can also provide Cascade storage services and earn fees from file storage operations. This guide covers the base validator setup. See the Supernode Overview for upgrading to a Supernode.
Network Information
| Item | Value |
|---|---|
| Chain ID | lumera-testnet-2 |
| Denom | ulume (6 decimals - 1 LUME = 1,000,000 ulume) |
| Min gas price | 0.025ulume |
| Seed node | faff7c1350468c53121a669ac40e317a4a70c425@seeds.testnet.lumera.io:26656 |
| Genesis file | testnet-2/genesis.json |
| Public RPC | https://lumera-testnet-rpc.polkachu.com |
| Public API (LCD) | https://lumera-testnet-api.polkachu.com |
| Public gRPC | polkachu.com/testnet_public_grpc |
| SN-API | https://snapi.testnet.lumera.io |
| Snapshot | Polkachu testnet snapshots (~55 GB) |
| Explorer | portal.testnet.lumera.io |
| Faucet | faucet.astrostake.xyz/lumera |
Binary Version
Run the version testnet is currently on.
Releases ship a prebuilt linux/amd64 binary together with the CosmWasm shared library and an installer, so you do not need Go or a compiler. ARM (including Apple Silicon) is not supported for production nodes.
Hardware Requirements
Testnet runs on lighter hardware than mainnet.
| Component | Minimum | Recommended |
|---|---|---|
| CPU | 4 vCPU (x86_64) | 8+ cores |
| RAM | 8 GB (+ 4 GB swap) | 16-32 GB |
| Storage | 250 GB NVMe/SSD | 500 GB+ NVMe |
| Network | 1 Gbps | 5 Gbps |
| OS | Ubuntu 22.04 LTS or later | Ubuntu 24.04 LTS or later |
Testnet chain data is already about 55 GB and grows continuously. Start at 250 GB and enable pruning. HDDs are not viable. SATA SSDs may stall under load.
What You Need
- A VPS or bare-metal server running Ubuntu 22.04 LTS or later (x86_64)
- Testnet LUME from the faucet or the Lumera Discord
How This Guide Is Organised
- Node Setup install
lumerad, sync the node, run it under systemd. - Create Validator create a wallet, fund it from the faucet, submit the validator transaction.
- Operations day-to-day commands, chain upgrades, monitoring, troubleshooting.