Server Health Check: Commands, Alerts and Blind Spots
A server health check has two halves: commands on the box for saturation, and a probe from outside for reachability. Here is how to run both.
#devops
25 posts tagged "Devops".
Nagios Alternatives in 2026: Pick by Job, Not Brand
Nagios alternatives split by job: host polling inside your network, or external availability checking. Here is which tool replaces which half.
MongoDB Health Check: Ping Is Not Enough
A mongodb health check built on ping misses the failure that matters: a replica set with no writable primary answers every probe and rejects every write.
HAProxy Health Check Config: Examples and Gotchas
An HAProxy health check decides which backends stay in rotation. Here are the directives that matter, sane defaults, and the failure it cannot see.
Postgres Health Check: Three Layers That Matter
A postgres health check needs three layers: pg_isready in the container, a real query behind your health route, and a port check from outside.
Infrastructure Monitoring: The Three Collection Methods
Infrastructure monitoring is defined by how data is collected, not which metrics you chart. Here is which layer each method reaches and which it cannot.