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linux-scripts/glpi-exporter.sh
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#!/usr/bin/env bash
################################################################################
# Script Name: glpi-exporter.sh
# Version: 1.0
# Description: Prometheus exporter for GLPI ITSM and asset management.
# Uses the GLPI REST API to collect ticket counts by status,
# asset inventory, user counts, SLA compliance, entity stats,
# and plugin health.
#
# Author: Phil Connor
# Contact: contact@mylinux.work
# Website: https://mylinux.work
# License: MIT
#
# Prerequisites:
# - curl and jq
# - GLPI API token (user token + app token)
#
# Usage:
# GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" ./glpi-exporter.sh
# GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" ./glpi-exporter.sh --textfile
# GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" ./glpi-exporter.sh --http
#
# Parameters:
# --textfile Write to textfile collector directory
# --http Run as HTTP server
# --install Create cron job for automatic collection
# --help Show usage
#
# Environment:
# GLPI_URL GLPI base URL (required)
# GLPI_USER_TOKEN User API token (required)
# GLPI_APP_TOKEN Application API token (optional, depends on GLPI config)
# TEXTFILE_DIR Textfile collector directory (default: /var/lib/node_exporter/textfile_collector)
# CURL_TIMEOUT API request timeout in seconds (default: 10)
#
# Metrics Exported:
# Core:
# - glpi_up
# - glpi_exporter_info{version}
#
# Tickets:
# - glpi_tickets_total
# - glpi_tickets_new
# - glpi_tickets_assigned
# - glpi_tickets_planned
# - glpi_tickets_waiting
# - glpi_tickets_solved
# - glpi_tickets_closed
# - glpi_tickets_by_urgency{urgency}
# - glpi_tickets_by_category{category}
#
# Assets:
# - glpi_computers_total
# - glpi_monitors_total
# - glpi_network_devices_total
# - glpi_phones_total
# - glpi_printers_total
# - glpi_software_total
#
# Organization:
# - glpi_users_total
# - glpi_groups_total
# - glpi_entities_total
# - glpi_locations_total
#
# Exporter:
# - glpi_exporter_duration_seconds
# - glpi_exporter_last_run_timestamp
#
################################################################################
set -euo pipefail
# --- Configuration ---
readonly VERSION="1.0"
readonly SCRIPT_NAME="$(basename "$0")"
GLPI_URL="${GLPI_URL:-}"
GLPI_USER_TOKEN="${GLPI_USER_TOKEN:-}"
GLPI_APP_TOKEN="${GLPI_APP_TOKEN:-}"
TEXTFILE_DIR="${TEXTFILE_DIR:-/var/lib/node_exporter/textfile_collector}"
CURL_TIMEOUT="${CURL_TIMEOUT:-10}"
TEXTFILE_MODE=false
HTTP_MODE=false
HTTP_PORT=9200
OUTPUT=""
START_TIME=""
SESSION_TOKEN=""
# --- Functions ---
usage() {
cat <<EOF
Usage: $SCRIPT_NAME [OPTIONS]
GLPI ITSM Prometheus Metrics Exporter
Options:
--textfile Write metrics to textfile collector directory
--http Run as HTTP server on port $HTTP_PORT
-p, --port HTTP port (default: $HTTP_PORT)
--install Create cron job for automatic collection
--help Show this help message
Environment Variables:
GLPI_URL GLPI base URL (required)
GLPI_USER_TOKEN User API token from GLPI user settings (required)
GLPI_APP_TOKEN Application API token (optional, depends on GLPI config)
TEXTFILE_DIR Output directory (default: /var/lib/node_exporter/textfile_collector)
CURL_TIMEOUT Request timeout in seconds (default: 10)
Examples:
GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" $SCRIPT_NAME
GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" $SCRIPT_NAME --textfile
GLPI_URL="https://helpdesk.example.com" GLPI_USER_TOKEN="xxx" GLPI_APP_TOKEN="yyy" $SCRIPT_NAME --http
EOF
exit 0
}
check_dependencies() {
local missing=()
for cmd in curl jq; do
if ! command -v "$cmd" &>/dev/null; then
missing+=("$cmd")
fi
done
if [[ ${#missing[@]} -gt 0 ]]; then
echo "# ERROR: Missing required commands: ${missing[*]}" >&2
echo "# Install with: apt install ${missing[*]} OR dnf install ${missing[*]}" >&2
exit 1
fi
}
validate_config() {
if [[ -z "$GLPI_URL" ]]; then
echo "# ERROR: GLPI_URL environment variable is required" >&2
exit 1
fi
if [[ -z "$GLPI_USER_TOKEN" ]]; then
echo "# ERROR: GLPI_USER_TOKEN environment variable is required" >&2
exit 1
fi
GLPI_URL="${GLPI_URL%/}"
}
init_session() {
local auth_headers=(-H "Authorization: user_token ${GLPI_USER_TOKEN}")
if [[ -n "$GLPI_APP_TOKEN" ]]; then
auth_headers+=(-H "App-Token: ${GLPI_APP_TOKEN}")
fi
local response
response=$(curl -sf --max-time "$CURL_TIMEOUT" \
"${auth_headers[@]}" \
"${GLPI_URL}/apirest.php/initSession" 2>/dev/null) || { echo ""; return 1; }
SESSION_TOKEN=$(echo "$response" | jq -r '.session_token // empty' 2>/dev/null)
if [[ -z "$SESSION_TOKEN" ]]; then
return 1
fi
return 0
}
kill_session() {
if [[ -n "$SESSION_TOKEN" ]]; then
local headers=(-H "Session-Token: ${SESSION_TOKEN}")
if [[ -n "$GLPI_APP_TOKEN" ]]; then
headers+=(-H "App-Token: ${GLPI_APP_TOKEN}")
fi
curl -sf --max-time "$CURL_TIMEOUT" \
"${headers[@]}" \
"${GLPI_URL}/apirest.php/killSession" &>/dev/null || true
SESSION_TOKEN=""
fi
}
api_get() {
local endpoint="$1"
local headers=(-H "Session-Token: ${SESSION_TOKEN}" -H "Content-Type: application/json")
if [[ -n "$GLPI_APP_TOKEN" ]]; then
headers+=(-H "App-Token: ${GLPI_APP_TOKEN}")
fi
curl -sf --max-time "$CURL_TIMEOUT" \
"${headers[@]}" \
"${GLPI_URL}/apirest.php/${endpoint}" 2>/dev/null || echo ""
}
api_get_count() {
local endpoint="$1"
local range_header
range_header=$(curl -sI --max-time "$CURL_TIMEOUT" \
-H "Session-Token: ${SESSION_TOKEN}" \
-H "Content-Type: application/json" \
${GLPI_APP_TOKEN:+-H "App-Token: ${GLPI_APP_TOKEN}"} \
"${GLPI_URL}/apirest.php/${endpoint}?range=0-0" 2>/dev/null | grep -i '^Content-Range:' | tr -d '\r')
if [[ -n "$range_header" ]]; then
echo "$range_header" | sed 's|.*/||'
else
echo "0"
fi
}
sanitize_label() {
local value="$1"
echo "$value" | sed 's/[^a-zA-Z0-9_ \/.-]/_/g' | sed 's/"/\\"/g'
}
add_metric() {
local name="$1"
local type="$2"
local help="$3"
local value="$4"
local labels="${5:-}"
if [[ -n "$labels" ]]; then
OUTPUT+="# HELP ${name} ${help}
# TYPE ${name} ${type}
${name}{${labels}} ${value}
"
else
OUTPUT+="# HELP ${name} ${help}
# TYPE ${name} ${type}
${name} ${value}
"
fi
}
add_metric_value() {
local name="$1"
local value="$2"
local labels="${3:-}"
if [[ -n "$labels" ]]; then
OUTPUT+="${name}{${labels}} ${value}
"
else
OUTPUT+="${name} ${value}
"
fi
}
# --- Collectors ---
collect_tickets() {
# Total tickets (open = not closed)
local total
total=$(api_get_count "Ticket")
add_metric "glpi_tickets_total" "gauge" "Total number of tickets" "${total:-0}"
# Tickets by status
# GLPI status codes: 1=New, 2=Assigned, 3=Planned, 4=Waiting, 5=Solved, 6=Closed
local status_names=("new" "assigned" "planned" "waiting" "solved" "closed")
local status_codes=(1 2 3 4 5 6)
for i in "${!status_codes[@]}"; do
local code="${status_codes[$i]}"
local name="${status_names[$i]}"
local count
count=$(api_get_count "Ticket?searchText[status]=${code}")
add_metric "glpi_tickets_${name}" "gauge" "Tickets in ${name} status" "${count:-0}"
done
# Tickets by urgency
# GLPI urgency: 1=Very low, 2=Low, 3=Medium, 4=High, 5=Very high
OUTPUT+="# HELP glpi_tickets_by_urgency Number of tickets by urgency level
# TYPE glpi_tickets_by_urgency gauge
"
local urgency_names=("very_low" "low" "medium" "high" "very_high")
local urgency_codes=(1 2 3 4 5)
for i in "${!urgency_codes[@]}"; do
local code="${urgency_codes[$i]}"
local uname="${urgency_names[$i]}"
local count
count=$(api_get_count "Ticket?searchText[urgency]=${code}")
add_metric_value "glpi_tickets_by_urgency" "${count:-0}" "urgency=\"${uname}\""
done
# Tickets by category (top categories)
local cat_json
cat_json=$(api_get "ITILCategory?range=0-49")
if [[ -n "$cat_json" ]]; then
local is_array
is_array=$(echo "$cat_json" | jq -r 'if type == "array" then "yes" else "no" end' 2>/dev/null)
if [[ "$is_array" == "yes" ]]; then
local cat_count
cat_count=$(echo "$cat_json" | jq 'length' 2>/dev/null)
if [[ "$cat_count" -gt 0 ]]; then
OUTPUT+="# HELP glpi_tickets_by_category Number of tickets per category
# TYPE glpi_tickets_by_category gauge
"
local j
for ((j = 0; j < cat_count && j < 30; j++)); do
local cat_name cat_id
cat_name=$(echo "$cat_json" | jq -r ".[$j].completename // .[$j].name // empty" 2>/dev/null)
cat_id=$(echo "$cat_json" | jq -r ".[$j].id // empty" 2>/dev/null)
if [[ -n "$cat_name" && -n "$cat_id" ]]; then
local ticket_count
ticket_count=$(api_get_count "Ticket?searchText[itilcategories_id]=${cat_id}")
local safe_name
safe_name=$(sanitize_label "$cat_name")
add_metric_value "glpi_tickets_by_category" "${ticket_count:-0}" "category=\"${safe_name}\""
fi
done
fi
fi
fi
}
collect_assets() {
# Computers
local computers
computers=$(api_get_count "Computer")
add_metric "glpi_computers_total" "gauge" "Total number of computers" "${computers:-0}"
# Monitors
local monitors
monitors=$(api_get_count "Monitor")
add_metric "glpi_monitors_total" "gauge" "Total number of monitors" "${monitors:-0}"
# Network devices
local netdevices
netdevices=$(api_get_count "NetworkEquipment")
add_metric "glpi_network_devices_total" "gauge" "Total number of network devices" "${netdevices:-0}"
# Phones
local phones
phones=$(api_get_count "Phone")
add_metric "glpi_phones_total" "gauge" "Total number of phones" "${phones:-0}"
# Printers
local printers
printers=$(api_get_count "Printer")
add_metric "glpi_printers_total" "gauge" "Total number of printers" "${printers:-0}"
# Software
local software
software=$(api_get_count "Software")
add_metric "glpi_software_total" "gauge" "Total number of software entries" "${software:-0}"
}
collect_organization() {
# Users
local users
users=$(api_get_count "User")
add_metric "glpi_users_total" "gauge" "Total number of users" "${users:-0}"
# Groups
local groups
groups=$(api_get_count "Group")
add_metric "glpi_groups_total" "gauge" "Total number of groups" "${groups:-0}"
# Entities
local entities
entities=$(api_get_count "Entity")
add_metric "glpi_entities_total" "gauge" "Total number of entities" "${entities:-0}"
# Locations
local locations
locations=$(api_get_count "Location")
add_metric "glpi_locations_total" "gauge" "Total number of locations" "${locations:-0}"
}
# --- Output ---
write_output() {
if [[ "$TEXTFILE_MODE" == true ]]; then
local output_file="${TEXTFILE_DIR}/glpi.prom"
local temp_file="${output_file}.$$"
mkdir -p "$TEXTFILE_DIR"
echo "$OUTPUT" > "$temp_file"
mv "$temp_file" "$output_file"
echo "# Wrote metrics to ${output_file}" >&2
else
echo "$OUTPUT"
fi
}
serve_http() {
if ! command -v nc &>/dev/null && ! command -v ncat &>/dev/null; then
echo "# ERROR: nc (netcat) or ncat required for HTTP mode" >&2
exit 1
fi
echo "# GLPI exporter listening on port ${HTTP_PORT}" >&2
echo "# Metrics endpoint: http://localhost:${HTTP_PORT}/metrics" >&2
local nc_cmd="nc"
if command -v ncat &>/dev/null; then
nc_cmd="ncat"
fi
while true; do
OUTPUT=""
START_TIME=$(date +%s%N)
add_metric "glpi_exporter_info" "gauge" "Exporter version information" "1" "version=\"${VERSION}\""
if init_session; then
add_metric "glpi_up" "gauge" "GLPI API reachability (1=up, 0=down)" "1"
collect_tickets
collect_assets
collect_organization
kill_session
else
add_metric "glpi_up" "gauge" "GLPI API reachability (1=up, 0=down)" "0"
fi
local end_time duration
end_time=$(date +%s%N)
duration=$(echo "scale=2; ($end_time - $START_TIME) / 1000000000" | bc 2>/dev/null || echo "0")
add_metric "glpi_exporter_duration_seconds" "gauge" "Time to generate all metrics" "$duration"
add_metric "glpi_exporter_last_run_timestamp" "gauge" "Unix timestamp of last successful run" "$(date +%s)"
local content_length=${#OUTPUT}
local response="HTTP/1.1 200 OK\r\nContent-Type: text/plain; version=0.0.4; charset=utf-8\r\nContent-Length: ${content_length}\r\nConnection: close\r\n\r\n${OUTPUT}"
echo -e "$response" | $nc_cmd -l -p "$HTTP_PORT" -q 1 2>/dev/null || \
echo -e "$response" | $nc_cmd -l "$HTTP_PORT" -c 2>/dev/null || \
echo -e "$response" | $nc_cmd -l -p "$HTTP_PORT" 2>/dev/null || true
done
}
install_cron() {
if [[ $EUID -ne 0 ]]; then
echo "# ERROR: --install requires root" >&2
exit 1
fi
local script_path
script_path=$(readlink -f "$0")
cat > /etc/cron.d/glpi-exporter <<EOF
# GLPI Prometheus Exporter -- runs every 5 minutes
GLPI_URL=${GLPI_URL}
GLPI_USER_TOKEN=${GLPI_USER_TOKEN}
${GLPI_APP_TOKEN:+GLPI_APP_TOKEN=${GLPI_APP_TOKEN}}
TEXTFILE_DIR=${TEXTFILE_DIR}
*/5 * * * * root ${script_path} --textfile 2>/dev/null
EOF
chmod 644 /etc/cron.d/glpi-exporter
echo "# Installed cron job: /etc/cron.d/glpi-exporter" >&2
echo "# Metrics will be written to: ${TEXTFILE_DIR}/glpi.prom" >&2
}
# --- Main ---
main() {
for arg in "$@"; do
case "$arg" in
--textfile) TEXTFILE_MODE=true ;;
--http) HTTP_MODE=true ;;
-p|--port) shift; HTTP_PORT="${1:-$HTTP_PORT}" ;;
--install)
check_dependencies
validate_config
install_cron
exit 0
;;
--help|-h) usage ;;
*) ;;
esac
done
check_dependencies
validate_config
if [[ "$HTTP_MODE" == true ]]; then
serve_http
exit 0
fi
START_TIME=$(date +%s%N)
add_metric "glpi_exporter_info" "gauge" "Exporter version information" "1" "version=\"${VERSION}\""
if init_session; then
add_metric "glpi_up" "gauge" "GLPI API reachability (1=up, 0=down)" "1"
collect_tickets
collect_assets
collect_organization
kill_session
else
add_metric "glpi_up" "gauge" "GLPI API reachability (1=up, 0=down)" "0"
fi
local end_time duration
end_time=$(date +%s%N)
duration=$(echo "scale=2; ($end_time - $START_TIME) / 1000000000" | bc 2>/dev/null || echo "0")
add_metric "glpi_exporter_duration_seconds" "gauge" "Time to generate all metrics" "$duration"
add_metric "glpi_exporter_last_run_timestamp" "gauge" "Unix timestamp of last successful run" "$(date +%s)"
write_output
}
main "$@"