Ask HN: What do you monitor on your servers?

We've been developing the BlueWave Uptime Manager [1] for the past 5 months with a team of 7 developers and 3 external contributors, and till today we always went under the radar.

As we move towards expanding from basic uptime tracking to a comprehensive monitoring solution, we're interested in getting insights from the community.

For those of you managing server infrastructure,

- What are the key assets you monitor beyond the basics like CPU, RAM, and disk usage?

- Do you also keep tabs on network performance, processes, services, or other metrics?

Additionally, we're debating whether to build a custom monitoring agent or leverage existing solutions like OpenTelemetry or Fluentd.

- What’s your take—would you trust a simple, bespoke agent, or would you feel more secure with a well-established solution?

- Lastly, what’s your preference for data collection—do you prefer an agent that pulls data or one that pushes it to the monitoring system?

[1] https://github.com/bluewave-labs/bluewave-uptime