Self-Hosted Observability for Production VPSs

Problem

Multiple production servers (German and Indonesian sites) had no unified view of CPU, memory, or logs. Incidents were diagnosed by SSH-ing from box to box, and there was no alerting at all.

Approach

1. 01

   Deployed Grafana + Prometheus (node and container exporters) + Loki for logs across all production VPSs.

2. 02

   Built dashboards for per-server health and top resource consumers.

3. 03

   Made log levels searchable per server and monitored the health of every scrape target.

4. 04

   Set up on-call alerting with escalation chains that ring developers' phones.

Outcome

A single pane of glass for every production server. Incidents are now surfaced by alerts instead of user reports, protecting uptime for client-facing sites.