Monitoring and observability tools — Grafana, Prometheus, traces, logs — tell you that something is wrong and where. They do not tell you what the host operating system was doing at that moment: which processes were consuming memory, what the kernel OOM killer decided, whether a filesystem was having an I/O contention problem, what the block device queue looked like, what firewall rules were in effect. That data lives on the node, is often ephemeral, and disappears or changes as the system recovers.

The purpose of integrating the widely available open-source 𝘀𝗼𝘀 𝗿𝗲𝗽𝗼𝗿𝘁 Linux command into the pipeline is to 𝗰𝗮𝗽𝘁𝘂𝗿𝗲 𝘁𝗵𝗮𝘁 𝗢𝗦-𝗹𝗲𝘃𝗲𝗹 𝘀𝗻𝗮𝗽𝘀𝗵𝗼𝘁 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗰𝗮𝗹𝗹𝘆, 𝗮𝘁 𝘁𝗵𝗲 𝗺𝗼𝗺𝗲𝗻𝘁 𝗼𝗳 𝘁𝗵𝗲 𝗮𝗹𝗲𝗿𝘁, 𝗯𝗲𝗳𝗼𝗿𝗲 𝘁𝗵𝗲 𝗲𝘃𝗶𝗱𝗲𝗻𝗰𝗲 𝗱𝗲𝗴𝗿𝗮𝗱𝗲𝘀 without requiring a human to log into the node and collect it manually.

More specifically it achieves four things:

𝗦𝗽𝗲𝗲𝗱 𝗼𝗳 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝗶𝘀. The data is already collected and analysed by the time the SRE opens the alert. They review findings instead of gathering evidence.

𝗘𝘃𝗶𝗱𝗲𝗻𝗰𝗲 𝗽𝗿𝗲𝘀𝗲𝗿𝘃𝗮𝘁𝗶𝗼𝗻. Memory state, kernel ring buffer entries, and process tables are ephemeral. Automated collection catches them before the system recovers and overwrites them.

𝗥𝗲𝗱𝘂𝗰𝗲𝗱 𝘁𝗼𝗶𝗹. Manual OS diagnostics during an incident are slow, error-prone, and inconsistent between engineers. Presets make the collection reproducible and automatic.

𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗻𝗲𝘀𝘀. Every incident of the same type produces the same shape of data, making cross-incident comparison and pattern recognition — including by an AI analysis tool meaningful and reliable.

In short: monitoring tells you the what, tracing tells you the where, and sos report presets tell you the why automatically, consistently, and fast enough to be useful during the incident rather than after it.

The best part is that you do not need to install anything.

If you like to know how can this be done, this article contains detailed instructions on how can this be achieved for a concrete production environment involving Kubernetes, Grafana and Ansible

visit sos-vault for a complete reference on how to use sos report command effectivley