# Technical questions Source: https://vpsdime.com/knowledgebase/technical-questions Last reviewed: 2026-07-02 Summary: What runs on VPSDime plans, Docker and Docker Swarm, Kubernetes and k3s, Mailcow, swap, FUSE, TUN/TAP for VPNs, NFS, PPP, and disk quotas. Straight answers to "does X work on my VPS". Short version: nearly everything works out of the box on Linux VPS, and Premium VPS (full KVM) runs anything. ## Containers and orchestration - [Can I run Docker on my VPS?](https://vpsdime.com/knowledgebase/technical-questions/docker-on-vps) Yes, out of the box, no tweaks. - [Running Docker Swarm on Linux VPS](https://vpsdime.com/knowledgebase/technical-questions/docker-swarm). Works, use `dnsrr` endpoint mode instead of the default. - [Kubernetes on VPSDime services](https://vpsdime.com/knowledgebase/technical-questions/kubernetes-on-vps). k3s works on Linux VPS; full k8s wants Premium. ## CPU, memory, and disk - [What is CPU steal time (%st)?](https://vpsdime.com/knowledgebase/technical-questions/cpu-steal) Where the metric comes from, reading it properly, and what the values mean. - [What is the IOPS metric?](https://vpsdime.com/knowledgebase/technical-questions/what-is-iops) Operations vs bytes vs latency, and why databases care about the one file copies don't. - [How can I limit an application's CPU usage?](https://vpsdime.com/knowledgebase/technical-questions/limit-cpu-usage) nice for priority, CPUQuota for hard caps, and when each is right. - [How can I find the biggest folders?](https://vpsdime.com/knowledgebase/technical-questions/biggest-folders) du sorted, ncdu, and the drill-down method. - [Can I add swap memory on Linux VPS?](https://vpsdime.com/knowledgebase/technical-questions/swap-on-linux-vps) No, and you genuinely don't need it. - [Disk quotas on your VPS](https://vpsdime.com/knowledgebase/technical-questions/disk-quotas). Supported, set them up as usual. ## Networking and modules - [How do I set my IP or IPv6 address?](https://vpsdime.com/knowledgebase/technical-questions/set-ip-address) You don't, it's automatic. Where the values live, and the Auto-fix network button when a manual edit breaks connectivity. - [Running your own VPN (WireGuard)](https://vpsdime.com/knowledgebase/technical-questions/wireguard-vpn). The ten-minute personal VPN, phone QR codes, DNS leak checks, and the honest limits. - [Private networking between your VPSes](https://vpsdime.com/knowledgebase/technical-questions/private-networking-between-vpses). Tailscale or plain WireGuard, and binding services to the overlay. - [TUN/TAP (VPNs) on your VPS](https://vpsdime.com/knowledgebase/technical-questions/enable-tun-tap). Enabled by default, run your personal VPN. - [FUSE (sshfs, rclone mount) on your VPS](https://vpsdime.com/knowledgebase/technical-questions/enable-fuse). Enabled by default. - [NFS on your VPS](https://vpsdime.com/knowledgebase/technical-questions/enable-nfs). Works, nothing to enable. - [How our SSH brute-force firewall works](https://vpsdime.com/knowledgebase/technical-questions/ssh-bruteforce-firewall). Network-wide detection, why it beats a local fail2ban, and the three-firewalls map. - [Two-factor authentication for SSH (TOTP)](https://vpsdime.com/knowledgebase/technical-questions/ssh-2fa-totp). Authenticator codes at SSH login, when it's worth it, and the lockout-safe setup. - [How can I change my SSH port?](https://vpsdime.com/knowledgebase/technical-questions/change-ssh-port) Safely, in the order that can't lock you out. - [Which application is using my bandwidth?](https://vpsdime.com/knowledgebase/technical-questions/per-app-bandwidth) nethogs, iftop, and vnstat, per process, per connection, per day. - [How can I limit an application's bandwidth?](https://vpsdime.com/knowledgebase/technical-questions/limit-bandwidth-usage) App flags first, trickle, and interface shaping. - [PPP on your VPS](https://vpsdime.com/knowledgebase/technical-questions/enable-ppp). Enabled by default. ## Applications - [Can I use Mailcow on Linux VPS?](https://vpsdime.com/knowledgebase/technical-questions/mailcow-on-linux-vps) Yes, and read the email policy first. - [Scheduling tasks with cron](https://vpsdime.com/knowledgebase/technical-questions/cron-basics). The crontab format with examples, the habits that keep jobs honest, and the cron cascade that can make a VPS unresponsive, with flock as the guard. - [Using systemd timers instead of cron jobs](https://vpsdime.com/knowledgebase/technical-questions/systemd-timers). Logged runs, no overlaps, catch-up after downtime, the two-file recipe. - [Installing a desktop environment (and connecting remotely)](https://vpsdime.com/knowledgebase/technical-questions/install-desktop-environment). XFCE/LXQt/GNOME, and xRDP vs VNC vs NoMachine vs X2Go. - [Installing Gitea: host your own code](https://vpsdime.com/knowledgebase/technical-questions/install-gitea). The self-hosted GitHub, compose install, SSL, and the backup line. ## Linux skills and tools - [How do Linux file permissions work?](https://vpsdime.com/knowledgebase/technical-questions/linux-file-permissions) rwx, octal, the special bits, umask, and chattr attributes. - [Process management: ps, top, kill, and friends](https://vpsdime.com/knowledgebase/technical-questions/process-management). Seeing, finding, stopping, and prioritizing, signals included. - [How can I find files, and text inside files?](https://vpsdime.com/knowledgebase/technical-questions/find-files-and-text) find and grep -r, plus fd and ripgrep. - [How can I keep an application running after I disconnect?](https://vpsdime.com/knowledgebase/technical-questions/keep-apps-running-after-ssh) tmux, systemd, nohup, by situation. - [How can I encrypt and decrypt files?](https://vpsdime.com/knowledgebase/technical-questions/encrypt-files) age and GPG, and encrypting backups before they leave the box. - [What is strace, and how do I use it?](https://vpsdime.com/knowledgebase/technical-questions/what-is-strace) Watching a program's system calls, hung processes, and mystery configs. --- Still need a person? You can [open a support ticket](https://vpsdime.com/open-ticket/) any time.