justin a4ff29e1b5 Fix counter spike/negative on ZVM reboot (closes #12) ...

When a ZVM reboots its cumulative counters (IOPs, write/sync/network MBs,
encrypted/unencrypted LBs) reset to zero. The previous abs() approach
converted the large negative delta into an equally wrong positive spike.

Introduces _counter_delta(new, old, vm_id, metric) which:
- Returns new - old when new >= old (normal incrementing counter)
- Returns new as-is when new < old (counter reset / reboot detected)
  and logs a WARNING identifying the VM and metric that reset

Publishing the raw new value on reset correctly reflects the restarted
counter state, suppresses the false spike, and produces a visible dip
in Grafana that naturally indicates the ZVM reboot event.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-02-20 19:47:35 -05:00

..

vmware

updates for zvma10

2024-05-30 20:57:39 -04:00

zvma10

Refactor to prometheus_client, JSON logging, and codebase cleanup

2026-02-20 19:05:45 -05:00

.pypirc

updates for docker environments

2023-12-21 12:57:30 -05:00

python-node-exporter.py

Fix counter spike/negative on ZVM reboot (closes #12)

2026-02-20 19:47:35 -05:00

requirements.txt

Bump to Python 3.14.3-slim, fix 9 CVEs, remove leaked PyPI token

2026-02-20 19:32:41 -05:00

version.py

updates for zvma10

2024-05-30 20:57:39 -04:00