Knowledge base
Step-by-step VPS guides: from your first connection to Kubernetes.
How to connect to a VPS over SSH
Connect to your server with a password or a key from Linux, macOS and Windows, create a key and disable password login.
2 min read
How to set up a firewall on a VPS (UFW and firewalld)
Close every port except the ones you need: UFW on Ubuntu and Debian, firewalld on AlmaLinux and Rocky Linux.
2 min read
How to install Docker and Docker Compose on a VPS
Install Docker Engine from the official repository, run your first container and an app with Docker Compose.
1 min read
How to run Kubernetes on a VPS with k3s
Lightweight Kubernetes on one or more AdAstra Cloud servers with k3s, deploying your first app and access via kubectl.
2 min read
How to add swap to a VPS
Create a swap file so the server doesn't crash when it runs out of memory, and tune swappiness.
1 min read
Nginx and a free Let's Encrypt SSL certificate
Install Nginx, configure a site or a reverse proxy for your app and get an HTTPS certificate with auto-renewal.
1 min read