Nexus Incentivized Testnet III — Prover-Node Setup

Testnet III will be live until the Nexus Mainnet launch later in Q3 2025. This means that, unlike past Nexus testnets, participants in every country will have weeks, not days, to contribute to the Nexus supercomputer and earn rewards.

Table Of Contents:

• Hardware requirements
• VPS Suggestion
• Guide on How to Buy a VPS from Contabo
• Run Node
• Add More NODE via Screen
• Manage your NODE
• Update your Node
• FIX GLIBC 2.39 ISSUE
• Need Help? Join TG Group

Features:

• Installs all required dependencies
• Supports 1 to 10 simultaneous nodes (recommended 1 Node ID : 1 VPS Server, if your server is low RAM)
• Automatically installs Rust, Nexus CLI, and nexus-network
• Launches multiple nodes in screen sessions

💻 Nexus Prover Node — Recommended Hardware Requirements

Component	Minimum	Recommended
CPU	6 cores (x86_64)	8 cores or higher
RAM	12 GB	12 GB or more
Disk Space	10 GB SSD	20 GB SSD (NVMe if possible)
Bandwidth	5 Mbps (up/down)	10+ Mbps stable
OS	Ubuntu 22.04	Ubuntu 24.04 LTS
Architecture	x86_64	x86_64
Other	Root access + open ports	VPS or Dedicated Server

⚠️ Memory Notice

✅ 12 GB of RAM is now the safe minimum for running a Nexus Prover node without crashes.

You can run multiple nodes on one VPS/device, but not recommended unless you have enough RAM.
If memory is too low, it may cause system crashes ❗❗

💡 More RAM = Higher Cycles/sec

💡 VPS Suggestions:

Provider	Plan Example	Meets 12GB RAM?	Notes
Contabo VPS 30	6 vCPU / 12 GB RAM / 300 GB SSD for ~$12/mo	✅ Yes	💯 Recommended
Hetzner CPX41	8 vCPU / 16 GB RAM / 160 GB SSD	✅ Yes	Excellent performance
DigitalOcean	2 vCPU / 2–8 GB RAM	❌ No	Needs upgrade
Localhost (VM)	Ubuntu VM on Home PC	⚠️ Maybe	Not reliable if uptime is unstable

Guide on How to buy VPS: Contabo

Run the Auto-Installer

Copy and paste the following one-liner to begin setup:

wget -q https://raw.githubusercontent.com/SKaaalper/Nexus-Testnet-III/main/nexus-prover-setup.sh && chmod +x nexus-prover-setup.sh && sudo ./nexus-prover-setup.sh

• Go to: https://app.nexus.xyz/nodes
• Click "Add CLI Node" in the dashboard to generate your Node ID.

If you want to add more nodes

cd /root/nexus-prover

• Create screen:

screen -S nexus2

• Run Node:

nexus-network start --node-id <your-node-id>

• Change nexus2, nexus3, nexus4, etc., depending on the next available screen session number.
• Replace YOUR_NEW_NODE_ID with your actual Node ID from the Nexus dashboard.

🔔 Note: Avoid using duplicate screen session names to prevent conflicts that could stop or disable other running nodes.

Monitor or Manage Nodes:

Action	Command
Detach session	CTRL+A then D
Reattach session	screen -r nexus1
Stop a node	screen -XS nexus1 quit
Remove setup files	rm -rf /root/nexus-prover

Update your node to stay in sync and continue participating.

How to Update:

1. Delete old screen:

screen -XS nexus1 quit

2. Download and install the latest CLI:

curl https://cli.nexus.xyz/ | sh

source ~/.bashrc

3. Create new screen:

screen -S nexus1

4. Start your node again:

nexus-network start --node-id <your-node-id>

→ Get your Node id HERE: https://app.nexus.xyz/nodes

→ Make sure you replace <your-node-id> with your actual Node ID.

→ Monitor and Manage your node: GO HERE

FULL COMMANDS TO FIX GLIBC 2.39 ISSUE.

1. Install required packages:

sudo apt update
sudo apt install -y gawk bison gcc make wget tar

2. Download GLIBC 2.39:

cd ~
wget -c https://ftp.gnu.org/gnu/glibc/glibc-2.39.tar.gz
tar -zxvf glibc-2.39.tar.gz
cd glibc-2.39

3. Create a build directory:

mkdir glibc-build
cd glibc-build
../configure --prefix=/opt/glibc-2.39

4. Compile and install (this will take time depending on CPU):

make -j$(nproc)
sudo make install
cd ~

5. Create screen session:

screen -S nexus1

6. Run the Nexus Node: → Replace <your-node-id> with your actual node ID:

/opt/glibc-2.39/lib/ld-linux-x86-64.so.2 \
--library-path /opt/glibc-2.39/lib:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu \
/root/.nexus/bin/nexus-network start --node-id <your-node-id>

→ Get your Node id HERE: https://app.nexus.xyz/nodes

→ Monitor and Manage your node: GO HERE

• More Info's at Official Docs
• Nexus Official Discord
• Nexus Official Twitter

Join the Telegram for updates and help:

👉 @KatayanAirdropGnC