Cloud servers (root servers)

• Cloud servers at a glance: root server, infrastructure and differences A cloud server is a virtual root server with full rights. Here you can read what it runs on, how it differs from a managed server and container hosting, and what you are responsible for yourself.
• Ordering a cloud server: resources, term and options In the configurator you set CPU cores, memory and storage and choose disk speed, term, payment interval and the external backup. Operating system and access follow after ordering.
• Disk speed: Basic, Standard and Performance The disk speed defines how fast your server may read and write. Here you will find the values of the three tiers, the burst and how the surcharge is calculated.
• Setting up a cloud server: the setup assistant in the customer area After ordering, you choose the operating system, access, SSH keys and hostname in the customer area. Your server is then usually reachable within one to two minutes.
• Operating systems for cloud servers: catalogue and versions For your cloud server, Debian, Ubuntu, AlmaLinux, Rocky Linux, CentOS Stream, openSUSE Leap and FreeBSD are available - each as a tested, up-to-date image.
• Access data and initial password of your cloud server Where to find user, IP addresses and SSH command, and how to retrieve a randomly generated initial password exactly once.
• Generating SSH keys and managing them in your profile How to generate an SSH key pair on Windows, macOS and Linux, store the public key in your profile and use it for your cloud servers.
• First login to the cloud server: SSH and web console How to log in to your cloud server via SSH on Windows, macOS or Linux - and how to use the web console if SSH does not work.
• IP addresses, name servers and additional IPs of your cloud server Every cloud server receives a fixed IPv4 and an IPv6 address. Here you can read how the addresses are configured, which name servers apply and how to order further IPv4 addresses.
• Setting up an additional IP address in the operating system An additional IPv4 address reaches your server via its own network card and is configured statically in the system. This is how it works on Debian, Ubuntu, AlmaLinux, Rocky Linux, CentOS Stream, openSUSE and FreeBSD.
• Setting reverse DNS (PTR) for your cloud server yourself You set the reverse DNS entry of every IP address of your cloud server yourself in the customer area. A matching A or AAAA record is required.
• Cloud server firewall: rules, quick rules and log Every cloud server has a firewall in front of the system that is active even before the first start. This is how you create rules, order them and read the firewall log.
• Managing a cloud server in the customer area: overview, power actions and statistics The server page in the customer area: tabs at a glance, starting and shutting down the server, console, statistics and what happens with cancelled servers.
• High availability: what happens to your cloud server in a failure Cloud servers run in a cluster with shared Ceph storage. If a host node fails, your server restarts on another node. What this means for you.
• Snapshots: creating, rolling back and deleting With a snapshot you save the state of your server before a change and roll it back within seconds if problems occur. This is how quota, expiry and restore work.
• External backups: backup points, restore and individual files With the external backup your cloud server is backed up every night to a separate backup server. You restore the whole server or individual files yourself in the customer area.
• Snapshot or backup? The difference for your cloud server Snapshots and external backups complement each other. Here you can see at a glance where they are stored, how long they are kept and what to use each for.
• Upgrade: extending CPU, memory, storage and disk speed In the Upgrade tab you extend the resources of your cloud server, change the disk speed and add options such as the external backup.
• Growing partition and file system after a storage upgrade After a storage upgrade the disk is larger, but the file system is not yet. This is how you use the new space on Linux and FreeBSD.
• Reinstalling a cloud server: changing the system with a snapshot beforehand With reinstallation you install a fresh system - optionally a different operating system, with new access and new SSH keys. IP addresses, hardware and firewall remain.
• Security: recommendations for your cloud server As the operator of a root server you are responsible for its security. These steps help you secure your cloud server well from the start.
• Troubleshooting: cloud server unreachable, password forgotten and more Answers to common problems with cloud servers: no connection, SSH key rejected, password forgotten, slow start, reinstallation blocked and questions about billing and cancellation.

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