Tink vs libvirt
libvirt runs guests through virsh and virt-manager. That is not a mechanic. Tink installs in one command, watches the Linux host, explains what is wrong, and helps you fix it.
libvirt runs the guest. Tink answers “why is this VPS sick?”
Accidental sysadmins land on libvirt because a virsh console looks like ops. Then the volume fills, guest nginx dies, and virsh list still shows running — no host alarm matched guest fill. A filling /var is a Tink warning; it is not a libvirt job unless you scraped virsh domstate and watched it.
Tink is the other job: detect the issue on the machine, say why it happened in plain English, propose the command, and run it only after you approve. Keep using libvirt if you already run KVM guests. Use Tink if you run Linux servers and want a mechanic.
| Feature | Tink | libvirt |
|---|---|---|
| Setup time | 30 seconds (one curl | sh command) | Hours — libvirtd, qemu:///system, domain XML, then a guest that still has no mechanic after virsh list stays running |
| What you get | Working monitoring, diagnosis, and approved fixes | A hypervisor API. Disk fill, guest nginx, Postgres, and certs stay your problem until you SSH in |
| Pricing | Free (Scout) / $9 / $29 per machine per month | Engineer time for libvirtd, qcow2, and the person who owns the box after virsh domstate still says running |
| Hidden costs | None — fully managed | A quiet qcow2 at 2am, a filling volume, and a second tool to tell you the Linux guest is sick while virsh list still shows running |
| Monitoring approach | Agent on the server — CPU, disk, services, logs, certs, ports | Guest lifecycle and host virt. libvirt does not watch a quiet cert or guest auth.log after the domain started |
| Configuration | None after install — heuristics and AI | Domain XML, storage pools, networks, and which guest death actually pages you |
| Plain-English diagnosis | Yes — AI explains root cause, impact, and fix | You read virsh list, then SSH in to change the Linux guest the hypervisor already sits under |
| Fix execution | Proposes and executes approved commands with an audit trail | Start and stop domains only — libvirt cannot free guest disk, rotate a cert, or stop SSH brute-force unless you wrote that runbook |
| Alerting | Built-in across 8 channels | Not a libvirt job — virt-manager plus a separate monitoring tool have to fire |
| Predictive alerts | Yes — disk fills in ~6 days, memory and CPU trends | Not a libvirt job — a green running domain does not forecast a quiet volume filling up |
| SSH brute-force detection | Built-in — parses auth.log every scan | Never — libvirt does not read guest auth.log, journald, or firewall state after the domain started |
| Machine offline detection | Agent presence monitoring with multi-channel alerts | Silence if the guest dies after the last virsh poll — unless you built a separate uptime check |
| Public status page | Shareable URL with 90-day history | None — libvirt has no customer-facing status page for the Linux guest |
| Weekly fleet digest | Automated Monday digest + daily brief when issues are open | None — a virsh list recap is not a plain-English fleet narrative |
| On-call tracking | Built-in /oncall command + incident acknowledgment | Not included — wire failed domains into PagerDuty or another incident tool |
| Conversation interface | Telegram, WhatsApp, web dashboard, CLI | virsh and virt-manager. No mechanic you text when /var filled and the last domain still showed running |
| Learning curve | None — works after install | Steep — domain XML, qcow2, qemu:///system, and which host failure is the hypervisor vs the running guest |
| Best for | Freelancers, small teams, accidental sysadmins (1-50 Linux servers) | Teams that already run KVM guests and need a hypervisor API, not a sick-VPS mechanic |
When libvirt is the right choice
Keep using libvirt when you already want that exact job:
- KVM/QEMU guests — you need domain XML, qcow2, and a virsh inventory, not a mechanic.
- An existing libvirt estate — storage pools, virtual networks, and isolation matter more than guest nginx, certs, and SSH on a quiet VPS.
- An existing lab or nested setup — guests already start, libvirtd already ships, and someone owns the hypervisor API.
- Hosts that only page on failed guests — you already run virt-manager and exporters, not a sick-box SSH loop.
The real cost of “just watch virsh list”
libvirt runs guests. A working ops loop for five Linux boxes is not:
- A running domain still means you SSH in and change the box by hand when it gets sick later
- Guest fill, nginx, certs, and SSH brute-force never appear unless a separate tool scraped those signals and a rule fired
- A filling /var is a Tink disk warning on every scan — libvirt will stay quiet until the next guest process dies
- A single VPS with a dead agent still needs a mechanic, not another virsh list line
For a 5-server team, Tink Mechanic at $45/month is cheaper than a libvirt host plus the engineer who keeps failed-guest notifications alive, and every scan includes a diagnosis a quiet virsh poll will not type.
No hypervisor homework. No silent host. One command install.
Start MechanicAlso compare: Tink vs QEMU · Tink vs Hyper-V · Tink vs Proxmox