48 lines
2.6 KiB
Bash
Executable File
48 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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# ==============================================================================================
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# ==================================== Uptime Probe ============================================
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# ==============================================================================================
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#
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# PURPOSE
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# ─────────────────────────────────────────────────────────────────────────────
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# Probes every hostname NPM serves, from outside the proxy, once per run. Produces the uptime
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# percentages and history strip on the Proxies tab, and the wobble list for the Sunday report.
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#
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# NPM's access log only describes hosts somebody visited. The host most likely to be quietly
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# broken is the one nobody visited, and nothing was watching those at all.
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#
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# ==============================================================================================
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# OPERATIONAL MODEL
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# ==============================================================================================
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#
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# A wrapper. The work is in uptime_probe.php, which issues all probes in parallel through
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# curl_multi so one pass costs about as long as the slowest domain rather than the sum.
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#
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# Runs every minute, injected by include/scheduler.php alongside the other background writers.
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# Nothing about the storage assumes that cadence — everything is counts and time buckets.
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#
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# Probes carry the User-Agent Varaverk-Uptime/1.0, which npm_access_stats.sh excludes. Without
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# that, this monitor becomes fifty thousand requests a day in the logs it reports on.
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#
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# ==============================================================================================
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# RUNTIME MODES
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# ==============================================================================================
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#
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# uptime_probe.sh one pass
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# uptime_probe.sh --dry-run probe and report, write nothing
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# uptime_probe.sh --status per-domain uptime table (24h / 7d / 30d / 1y)
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# uptime_probe.sh --events recent state changes, newest first
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#
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# ==============================================================================================
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# CONFIGURATION
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# ==============================================================================================
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#
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# UPTIME_PROBE_ENABLED master switch
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# UPTIME_PROBE_TIMEOUT seconds per domain
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# UPTIME_PROBE_LIST_TTL seconds to reuse the cached domain list from NPM
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#
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# ==============================================================================================
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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php "$SCRIPT_DIR/uptime_probe.php" "$@"
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