Fivenines Engineering | Monitoring, Uptime & DevOps Insights

At 3:00 AM, an on-call engineer gets paged for elevated CPU. Grafana shows several spiking hosts, Prometheus has a dense set of time series, and UptimeRobot says one endpoint is intermittently unavailable. The engineer opens a separate log search, checks a deployment channel, and tries to determine whether the CPU spike caused the outage or merely appeared alongside it. The ...

Replacing Opsgenie isn't just a matter of choosing another paging product. Alert sources, escalation rules, schedules, notification channels, APIs, Terraform workflows, status communication, and the surrounding monitoring stack all have to keep working when the switch happens. The decision also has a hard deadline: Atlassian stopped new Opsgenie sales on June 4, 2025, and pl...

At 3 a.m., an alert reports high database latency. The host's interface graphs look ordinary, byte counters are moving, and no obvious link error appears in the dashboard. Yet the application is failing. The problem may not be bandwidth saturation at all. It may be a burst of broadcasts, malformed ARP behavior, retransmissions, or a workload hidden behind a shared bridge.

The report was supposed to arrive before the team's first meeting. It didn't. The queue is growing, the data is stale, and someone insists the cron job “just stopped running” even though the server itself looks healthy.

That symptom sends operators toward the wrong question. A cron job may be missing from the scheduler, starting with the wrong environment, blocked by ...

Observability spend now averages 17% of total compute infrastructure spend, according to Grafana Labs' 2025 observability data. That figure changes the question. Infrastructure visibility isn't a sid...