SLO/Error Budget Calculator#

Calculate uptime targets, allowed downtime, error budgets, and burn rates for SLO/SLA management.

Error Budget#

bash

# All periods
python3 scripts/slo.py budget 99.9

# Specific periods
python3 scripts/slo.py budget 99.9 month week day

# Named aliases
python3 scripts/slo.py budget three-nines

Burn Rate#

bash

# Consumed 15m downtime in first 15 days of month
python3 scripts/slo.py burn 99.9 15m --period month --elapsed 15d

# Simple: consumed 2h this month
python3 scripts/slo.py burn 99.9 2h

Compare Targets#

bash

python3 scripts/slo.py compare 99 99.9 99.99 99.999 --period month

Observed Uptime#

bash

# From downtime
python3 scripts/slo.py uptime --downtime 45m --period month

# From uptime
python3 scripts/slo.py uptime --uptime-seconds 2589300 --period month

Multi-Window Analysis#

bash

python3 scripts/slo.py multi-window 99.9 month:15m week:3m day:30s

Reference Table#

bash

python3 scripts/slo.py table
python3 scripts/slo.py table --period year

Output Formats#

All commands support --format text|json|markdown:

bash

python3 scripts/slo.py budget 99.9 -f json
python3 scripts/slo.py table -f markdown

Duration Syntax#

Durations use: 30s, 5m, 2h, 1d, 2h30m, 1d12h. Raw seconds also accepted.

SLO Aliases#

• 99, 99.9, 99.95, 99.99, 99.999 — direct percentages
• two-nines, three-nines, four-nines, five-nines — named aliases