Alert thresholds depend on the nature of your applications. Some queries may have arbitrary tolerance thresholds. Building an efficient monitoring platform takes time. 😉
3 Prometheus alerting rules for Freeswitch. Exported via znerol/prometheus-freeswitch-exporter. These rules cover critical and warning conditions — copy and paste the YAML into your Prometheus configuration.
groups:
- name: ZnerolFreeswitchExporter
rules:
- alert: FreeswitchDown
expr: freeswitch_up == 0
for: 1m
labels:
severity: critical
annotations:
summary: Freeswitch down (instance {{ $labels.instance }})
description: "Freeswitch {{ $labels.instance }} is unresponsive.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: FreeswitchSessionsWarning
expr: (freeswitch_session_active * 100 / freeswitch_session_limit) > 80 and freeswitch_session_limit > 0
for: 10m
labels:
severity: warning
annotations:
summary: Freeswitch Sessions Warning (instance {{ $labels.instance }})
description: "High sessions usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: FreeswitchSessionsCritical
expr: (freeswitch_session_active * 100 / freeswitch_session_limit) > 90 and freeswitch_session_limit > 0
for: 5m
labels:
severity: critical
annotations:
summary: Freeswitch Sessions Critical (instance {{ $labels.instance }})
description: "High sessions usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" wget https://raw.githubusercontent.com/samber/awesome-prometheus-alerts/refs/heads/master/dist/rules/freeswitch/znerol-freeswitch-exporter.yml
Freeswitch {{ $labels.instance }} is unresponsive.
- alert: FreeswitchDown
expr: freeswitch_up == 0
for: 1m
labels:
severity: critical
annotations:
summary: Freeswitch down (instance {{ $labels.instance }})
description: "Freeswitch {{ $labels.instance }} is unresponsive.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" High sessions usage on {{ $labels.instance }}: {{ $value | printf "%.2f"}}%
- alert: FreeswitchSessionsWarning
expr: (freeswitch_session_active * 100 / freeswitch_session_limit) > 80 and freeswitch_session_limit > 0
for: 10m
labels:
severity: warning
annotations:
summary: Freeswitch Sessions Warning (instance {{ $labels.instance }})
description: "High sessions usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" High sessions usage on {{ $labels.instance }}: {{ $value | printf "%.2f"}}%
- alert: FreeswitchSessionsCritical
expr: (freeswitch_session_active * 100 / freeswitch_session_limit) > 90 and freeswitch_session_limit > 0
for: 5m
labels:
severity: critical
annotations:
summary: Freeswitch Sessions Critical (instance {{ $labels.instance }})
description: "High sessions usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"