Tink vs Harvester
Harvester is Kubernetes HCI. That is not a mechanic. Tink installs in one command, watches the Linux host, explains what is wrong, and helps you fix it.
Harvester runs the guest. Tink answers “why is this VPS sick?”
Accidental sysadmins land on Harvester because a homelab HCI looks like ops. Then the volume fills, guest nginx dies, and kubectl get vmi still shows Running — no VM matched host fill. A filling /var is a Tink warning; it is not a Harvester job unless you scraped KubeVirt 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 Harvester if you already run VMs. Use Tink if you run Linux servers and want a mechanic.
| Feature | Tink | Harvester |
|---|---|---|
| Setup time | 30 seconds (one curl | sh command) | Hours — ISO, VIP, cluster, Longhorn, then a host that still has no mechanic after kubectl get vmi stays Running |
| What you get | Working monitoring, diagnosis, and approved fixes | A Kubernetes HCI. Disk fill, guest nginx, Postgres, and certs stay your problem until you SSH into the VM |
| Pricing | Free (Scout) / $9 / $29 per machine per month | Harvester is Apache-2.0. You still pay the engineer who owns the cluster after the last VM stays Running |
| Hidden costs | None — fully managed | A quiet Longhorn volume at 2am, node fill, and a second tool to tell you the Linux guest is sick while Harvester still shows Running |
| Monitoring approach | Agent on the server — CPU, disk, services, logs, certs, ports | Guest lifecycle and KubeVirt. Harvester does not watch a quiet cert or guest auth.log after the VM started |
| Configuration | None after install — heuristics and AI | VIP, networks, Longhorn, and which VM death actually pages you |
| Plain-English diagnosis | Yes — AI explains root cause, impact, and fix | You read kubectl get vmi, then SSH in to change the Linux guest the HCI already sits under |
| Fix execution | Proposes and executes approved commands with an audit trail | Start and stop VMs only — Harvester 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 Harvester job — Grafana plus a separate monitoring tool have to fire |
| Predictive alerts | Yes — disk fills in ~6 days, memory and CPU trends | Not a Harvester job — a green Running VM does not forecast a quiet volume filling up |
| SSH brute-force detection | Built-in — parses auth.log every scan | Never — Harvester does not read guest auth.log, journald, or firewall state after the VM started |
| Machine offline detection | Agent presence monitoring with multi-channel alerts | Silence if the guest dies after the last KubeVirt poll — unless you built a separate uptime check |
| Public status page | Shareable URL with 90-day history | None — Harvester has no customer-facing status page for the Linux guest |
| Weekly fleet digest | Automated Monday digest + daily brief when issues are open | None — a kubectl get vmi recap is not a plain-English fleet narrative |
| On-call tracking | Built-in /oncall command + incident acknowledgment | Not included — wire failed VMs into PagerDuty or another incident tool |
| Conversation interface | Telegram, WhatsApp, web dashboard, CLI | Harvester UI and kubectl. No mechanic you text when /var filled and the last VM still showed Running |
| Learning curve | None — works after install | Steep — KubeVirt, Longhorn, VIP, and which host failure is the HCI vs the running guest |
| Best for | Freelancers, small teams, accidental sysadmins (1-50 Linux servers) | Teams that already run Harvester clusters and need Kubernetes HCI, not a sick-VPS mechanic |
When Harvester is the right choice
Keep using Harvester when you already want that exact job:
- Kubernetes HCI with KubeVirt guests — you need VMs on the cluster, not a mechanic.
- An existing Harvester cluster — Longhorn, VIP, and isolation matter more than guest nginx, certs, and SSH on a quiet VPS.
- An existing lab or nested setup — guests already start, the HCI already ships, and someone owns the management VIP.
- Hosts that only page on failed VMs — you already run Grafana and exporters, not a sick-box SSH loop.
The real cost of “just watch kubectl get vmi”
Harvester runs guests. A working ops loop for five Linux boxes is not:
- A Running VM still means you SSH in and change the box by hand when it gets sick later
- Host 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 — Harvester will stay quiet until the next VM process dies
- A single VPS with a dead agent still needs a mechanic, not another kubectl line
For a 5-server team, Tink Mechanic at $45/month is cheaper than a Harvester cluster plus the engineer who keeps failed-VM notifications alive, and every scan includes a diagnosis a quiet kubectl poll will not type.
No HCI homework. No silent host. One command install.
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