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Learn how to deploy ScyllaDB on Ubuntu VPS! This article provides a guide to deploy ScyllaDB on Ubuntu VPS. What is ScyllaDB? ScyllaDB is a high-performance, low-latency NoSQL database designed as a drop-in replacement for Apache Cassandra. It is written in C++ (instead of Java), enabling extremely fast throughput on modern hardware—making it ideal for real-time analytics, IoT, event streams, time-series workloads, and high-volume OLTP systems. This guide walks you through installing and configuring ScyllaDB on an Ubuntu VPS, optimizing system parameters, and verifying your new cluster node is online. ✅ Prerequisites Before you begin: Ubuntu 22.04 LTS or Ubuntu 20.04 LTS sudo or root access Minimum server specifications: 2 CPU cores (4+ recommended) 4GB RAM minimum (8–16GB recommended) SSD/NVMe storage strongly recommended A static public IP address Open firewall ports: 22 (SSH) 7000 (intra-node) 7001 (intra-node TLS) 7199 (JMX) 9042 (CQL) 9160 (Thrift—optional) 9180 (REST API) 9100 (Prometheus) Deploy ScyllaDB on Ubuntu VPS To deploy ScyllaDB on Ubuntu VPS, follow the steps below: Update System Packages sudo apt update && sudo apt upgrade -y sudo apt install curl wget ufw gnupg2 -y Add the ScyllaDB APT Repository ScyllaDB provides official repositories for Ubuntu. Import GPG key: sudo mkdir -p /etc/apt/keyrings sudo gpg --homedir /tmp --no-default-keyring --keyring /etc/apt/keyrings/scylladb.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys a43e06657bac99e3 sudo wget -O /etc/apt/sources.list.d/scylla.list http://downloads.scylladb.com/deb/debian/scylla-2025.3.list Set Java 11: sudo apt update sudo apt install -y openjdk-11-jre-headless sudo update-java-alternatives --jre-headless -s java-1.11.0-openjdk-amd64 Install ScyllaDB sudo apt update sudo apt install -y scylla Run the Scylla Setup Wizard Scylla includes a post-install configuration tool that prepares your system for optimal performance. Run: sudo scylla_setup Follow the interactive menu to: ✔ Configure RAID (if applicable) ✔ Optimize XFS filesystem ✔ Disable swap ✔ Tune kernel parameters ✔ Enable hugepages ✔ Configure networking ✔ Setup NTP time sync ✔ Enable Scylla services Choose "Yes" for all optimizations unless you have custom requirements. Configure Scylla YAML Main config file: /etc/scylla/scylla.yaml Open it: sudo nano /etc/scylla/scylla.yaml Modify the following sections: Node listen address: listen_address: RPC client address: rpc_address: 0.0.0.0 Cluster name: cluster_name: 'MyScyllaCluster' Seed nodes (for single node): seed_provider: - class_name: org.apache.cassandra.locator.SimpleSeedProvider parameters: - seeds: "" Save and exit. Configure Systemd Services Enable and start Scylla: sudo systemctl enable --now scylla-server sudo systemctl enable --now scylla-jmx Check status: sudo systemctl status scylla-server You should see active (running). Open Firewall Ports (UFW) If you use UFW: sudo ufw allow 9042/tcp sudo ufw allow 7000/tcp sudo ufw allow 7001/tcp sudo ufw allow 7199/tcp sudo ufw allow 9180/tcp sudo ufw allow 9100/tcp Optional: sudo ufw allow 9160/tcp Reload: sudo ufw reload Verify the Node Is Operational Check ring status: sudo nodetool status You should see something like: UN 203.0.113.10 256 86.7 KB rack1 UN Up / Normal Test CQL Connectivity Install cqlsh: sudo apt install scylla-tools-core -y Then connect: cqlsh 9042 Example test: CREATE KEYSPACE demo WITH replication {'class': 'SimpleStrategy', 'replication_factor': 1}; CREATE TABLE demo.users ( id UUID PRIMARY KEY, name text, email text ); INSERT INTO demo.users(id,name,email) VALUES (uuid(), 'Larry', 'admin@example.com'); SELECT * FROM demo.users; Enable Prometheus Metrics (Optional but Recommended) Scylla exposes metrics on port 9100. View endpoints: curl http://localhost:9100/metrics You can integrate with: Prometheus Grafana (Scylla dashboard available) Scylla Monitoring Stack Hardening & Optimization (Recommended) Disable swap: sudo swapoff -a sudo sed -i '/ swap / s/^/#/' /etc/fstab Add nofile limits: Add to /etc/security/limits.conf: * soft nofile 100000 * hard nofile 100000 Ensure consistent clock sync: sudo timedatectl set-ntp on Check Scylla tuning: sudo scylla_sysconfig_setup --no-force (Optional) Expanding to Multi-Node Cluster If scaling to multi-node: Use the first node as the seed: seeds: "node1-ip" On new nodes: listen_address: rpc_address: 0.0.0.0 Then join: sudo systemctl start scylla-server Check ring: nodetool status 🎉 Your ScyllaDB Deployment Is Ready You now have a fully tuned, production-ready ScyllaDB instance running on Ubuntu VPS. You can begin developing applications using: CQL (Cassandra Query Language) REST API Java, Python, Go, Rust drivers Time-series applications Event streaming Conclusion You now know how to deploy ScyllaDB on Ubuntu VPS. See Also: How to Deploy MongoDB on Ubuntu VPS (5 Minute Quick-Start Guide) How to Install Microsoft SQL Server on Ubuntu VPS (10 Minute Quick-Start Guide)

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