69 lines
2.1 KiB
Text
69 lines
2.1 KiB
Text
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#!/bin/bash
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# UPS heartbeat check - managed by Ansible (infra/nodito/34_nut_ups_setup_playbook.yml)
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#
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# The exit code is the answer and systemd keeps it:
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# systemctl is-failed {{ ups_systemd_service_name }}.service
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# Reporting anywhere else is optional and generic.
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LOG_FILE="{{ ups_log_file }}"
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UPS_NAME="{{ ups_name }}"
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PUSH_URL="${HEALTHCHECK_PUSH_URL:-}"
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log_message() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
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}
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report() {
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local status="$1"
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local message="$2"
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# No push URL is normal, not an error: the exit code below is still a
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# complete answer for anything reading unit state.
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[ -n "$PUSH_URL" ] || return 0
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local encoded_message
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encoded_message=$(printf '%s\n' "$message" | sed 's/%/%25/g; s/ /%20/g; s/(/%28/g; s/)/%29/g; s/:/%3A/g; s/\//%2F/g')
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local response http_code
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response=$(curl -s --max-time 10 --retry 2 -w "\n%{http_code}" "${PUSH_URL}?status=${status}&msg=${encoded_message}&ping=" 2>&1)
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http_code=$(echo "$response" | tail -n1)
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if [ "$http_code" = "200" ] || [ "$http_code" = "201" ]; then
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log_message "Reported ${status}: $message (HTTP $http_code)"
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return 0
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else
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log_message "ERROR: Failed to report ${status} (HTTP $http_code)"
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return 1
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fi
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}
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main() {
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local status charge runtime load
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status=$(upsc ${UPS_NAME}@localhost ups.status 2>/dev/null)
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if [ -z "$status" ]; then
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log_message "ERROR: Cannot communicate with UPS"
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report "down" "cannot communicate with UPS ${UPS_NAME}"
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exit 1
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fi
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charge=$(upsc ${UPS_NAME}@localhost battery.charge 2>/dev/null)
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runtime=$(upsc ${UPS_NAME}@localhost battery.runtime 2>/dev/null)
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load=$(upsc ${UPS_NAME}@localhost ups.load 2>/dev/null)
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if [[ "$status" == *"OL"* ]]; then
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local message="UPS on mains (charge=${charge}% runtime=${runtime}s load=${load}%)"
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log_message "$message"
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report "up" "$message"
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exit 0
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else
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log_message "UPS not on mains power (status=$status)"
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report "down" "UPS not on mains (status=${status} charge=${charge}%)"
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exit 1
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fi
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}
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main
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