Mateusz Suski
61 lines
1.2 KiB
Bash
Executable File
61 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -o errexit
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set -o nounset
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set -o pipefail
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services=("$@")
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service_exists() {
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local service="$1"
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systemctl list-unit-files "${service}.service" --no-legend 2>/dev/null | awk '{print $1}' | grep -qx "${service}.service"
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}
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pick_default_scheduler() {
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if service_exists cron; then
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printf 'cron'
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elif service_exists crond; then
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printf 'crond'
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else
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printf 'cron'
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fi
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}
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pick_default_ssh() {
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if service_exists sshd; then
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printf 'sshd'
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elif service_exists ssh; then
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printf 'ssh'
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else
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printf 'sshd'
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fi
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}
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if ! command -v systemctl >/dev/null 2>&1; then
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printf 'CRITICAL: systemctl command not available; cannot check services\n' >&2
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exit 1
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fi
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if (( ${#services[@]} == 0 )); then
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services=("$(pick_default_ssh)" "$(pick_default_scheduler)")
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fi
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status=0
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for service in "${services[@]}"; do
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if ! service_exists "$service"; then
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printf 'CRITICAL: %s service not found\n' "$service"
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status=1
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continue
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fi
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if systemctl is-active --quiet "$service"; then
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printf 'OK: %s is active\n' "$service"
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else
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state="$(systemctl is-active "$service" 2>/dev/null || true)"
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printf 'CRITICAL: %s is %s\n' "$service" "${state:-unknown}"
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status=1
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fi
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done
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exit "$status"
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