DmesPlugin update: threshold for MCE/RAS errors

[alexandraBara]

Summary

-Adding user defined threshold for MCE/RAS errors. If threshold is exceeded, the WARNINGS turn to ERROR.

Test plan

• pytest test/unit
• pytest test/functional (if applicable)
• pre-commit run --all-files

Checklist

• Added/updated tests (or explained why not)
• Updated docs/README if behavior changed
• No secrets or credentials committed

Sample run:

(venv) alexbara@ausalexbara02:~/node-scraper_public$ node-scraper  --plugin-configs=dmesg_mce_threshold_config.json   run-plugins DmesgPlugin   --data /home/alexbara/node-scraper_public/dmesg_sample.log   --collection False
  ...--------------------
  2026-06-23 11:59:35 CDT       INFO               nodescraper | Running plugin DmesgPlugin
  2026-06-23 11:59:35 CDT       INFO               nodescraper | Running data analyzer: DmesgAnalyzer
  2026-06-23 11:59:35 CDT      ERROR               nodescraper | CPU0 has 1 correctable MCE(s), mce_threshold=1
  2026-06-23 11:59:35 CDT      ERROR               nodescraper | CPU1/mc0 has 3 correctable MCE(s), mce_threshold=1
  2026-06-23 11:59:35 CDT      ERROR               nodescraper | (DmesgPlugin) task detected errors (4 warnings: RAS Correctable Error, RAS Corrected PCIe Error, MCE Corrected Error, RAS Corrected Error; 2 errors: CPU0 has 1 correctable MCE(s), mce_threshold=1, CPU1/mc0 has 3 correctable MCE(s), mce_threshold=1)
  2026-06-23 11:59:35 CDT       INFO               nodescraper | Closing connections
  2026-06-23 11:59:35 CDT       INFO               nodescraper | Running result collators
  2026-06-23 11:59:35 CDT       INFO               nodescraper | Running TableSummary result collator
  2026-06-23 11:59:35 CDT       INFO               nodescraper |

+-------------------------+--------+---------+
| Connection              | Status | Message |
+-------------------------+--------+---------+
| InBandConnectionManager | UNSET  |         |
+-------------------------+--------+---------+

+-------------+--------+--------------------------------------------------------------------------------+
| Plugin      | Status | Message                                                                        |
+-------------+--------+--------------------------------------------------------------------------------+
| DmesgPlugin | ERROR  | Analysis error: task detected errors (4 warnings: RAS Correctable Error, RAS   |
|             |        | Corrected PCIe Error, MCE Corrected Error, RAS Corrected Error; 2 errors: CPU0 |
|             |        | has 1 correctable MCE(s), mce_threshold=1, CPU1/mc0 has 3 correctable MCE(s),  |
|             |        | mce_threshold=1)                                                               |
+-------------+--------+--------------------------------------------------------------------------------+

  2026-06-23 11:59:35 CDT       INFO               nodescraper | Data written to csv file: ./scraper_logs_ausalexbara02_2026_06_23-11_59_35_AM/nodescraper.csv

dmesg_mce_threshold_config.json

{
  "global_args": {},
  "plugins": {
    "DmesgPlugin": {
      "analysis_args": {
        "mce_threshold": 1,
        "check_unknown_dmesg_errors": false
      }
    }
  },
  "result_collators": {}
}