# EOS-Alarms - Status Automatic Monitoring

- Institution: CERN
- Speaker: Octavian-Mihai Matei
- Year: 2026
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3023533)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

EOS-Alarms is managed by a multitude of subsystems. This talk will focus on Winston, which is an alarm management system that automates EOS health monitoring by continuously analyzing core subsystems through parsing JSON output from EOS commands. Winston understands EOS-specific operational patterns, distinguishing spare scheduling groups from active ones, correlating drain status with filesystem health, tracking quota-space view consistency, and monitoring node uptime patterns. Instance-specific configurable thresholds adapt to different deployment patterns across production, development, and archive storage. Operators manage alarms through Mattermost slash commands for diagnostics, suppression during maintenance windows with reason tracking, and status queries. Dynamic alarm suppression prevents alert fatigue. ServiceNow integration automatically creates tickets with EOS-specific context (FSID, hostport, scheduling group), updates them as conditions evolve, and closes them when metrics normalize.

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## Lectures

1. [EOS-Alarms - Status Automatic Monitoring](https://invisiblenetwork.ai/learn/cern/3023533/cacd8a54fd91), 14 min (CERN's player)