196 lines
7.7 KiB
Python
Executable File
196 lines
7.7 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import sys
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import traceback
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import requests
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from urllib3.exceptions import InsecureRequestWarning
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import checker.nagios
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from checker import print_icinga2_check_status
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from checker.linuxfabric.base import get_state
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from checker.units import human_readable_size
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def main():
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parser = argparse.ArgumentParser(description='Check Graylog input health')
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parser.add_argument('-u', '--url', required=True, help='Graylog API URL')
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parser.add_argument('-t', '--token', required=True, help='Graylog API token')
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parser.add_argument('-i', '--input', required=True, help='Input ID to check')
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parser.add_argument('--warn-mem', type=int, default=75, help='Percentage of JVM memory used for warm')
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parser.add_argument('--crit-mem', type=int, default=100, help='Percentage of JVM memory used for critical')
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parser.add_argument('--insecure', action='store_false', help="Don't verify SSL")
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parser.add_argument('--crit-notif', action='store_true', help='Return critical when there are notifications')
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args = parser.parse_args()
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if not args.insecure:
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requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning)
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headers = {
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'Accept': 'application/json',
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'X-Requested-By': 'XMLHttpRequest',
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}
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try:
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response = requests.get(f'{args.url}/system/inputstates/{args.input}', headers=headers,
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auth=(args.token, 'token'), verify=args.insecure)
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response.raise_for_status()
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except requests.exceptions.RequestException as e:
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print(f'CRITICAL - Unable to query Graylog API: {e}')
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sys.exit(2)
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input_data = response.json()
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type = input_data['message_input']['type']
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try:
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metrics_json = {
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'metrics': [
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'org.graylog2.throughput.input.1-sec-rate',
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'org.graylog2.throughput.output.1-sec-rate',
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f'{type}.{args.input}.incomingMessages',
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f'{type}.{args.input}.open_connections',
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f'{type}.{args.input}.total_connections',
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f'{type}.{args.input}.written_bytes_1sec',
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f'{type}.{args.input}.written_bytes_total',
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f'{type}.{args.input}.read_bytes_1sec',
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f'{type}.{args.input}.read_bytes_total',
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"org.graylog2.journal.append.1-sec-rate",
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"org.graylog2.journal.read.1-sec-rate",
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"org.graylog2.journal.segments",
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"org.graylog2.journal.entries-uncommitted",
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"jvm.memory.heap.used",
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"jvm.memory.heap.committed",
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"jvm.memory.heap.max"
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],
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}
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response = requests.post(f'{args.url}/cluster/metrics/multiple', headers=headers, auth=(args.token, 'token'),
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verify=args.insecure,
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json=metrics_json)
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response.raise_for_status()
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input_metrics = response.json()[list(response.json().keys())[0]]['metrics']
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except requests.exceptions.RequestException as e:
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print(f'CRITICAL - Unable to query Graylog API: {e}\n{response.text}')
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sys.exit(2)
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# Format the metrics
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metrics_data = {}
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for metric in input_metrics:
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name = metric['full_name'].replace(type, '').replace('org.graylog2.', '').replace(args.input, '').strip(
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'.').replace('-', '_').replace('.', '_')
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value = None
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if 'value' in metric['metric']:
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value = metric["metric"]["value"]
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elif 'count' in metric['metric']:
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value = metric["metric"]["count"]
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elif 'rate' in metric['metric']:
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value = metric["metric"]["rate"]["one_minute"]
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name = f'{name}_one_minute'
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value = int(value)
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metrics_data[name] = value
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jvm_mem_usage_warn = int(metrics_data['jvm_memory_heap_max'] / int(100 / args.warn_mem))
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jvm_mem_usage_crit = int(metrics_data['jvm_memory_heap_max'] / int(100 / args.crit_mem))
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# Some metric names are changed for better readability
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perfdata = {
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'throughput_input_1_sec_rate': {
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'value': int(metrics_data['throughput_input_1_sec_rate']),
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'min': 0,
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},
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'throughput_output_1_sec_rate': {
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'value': int(metrics_data['throughput_output_1_sec_rate']),
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'min': 0,
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},
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'incoming_messages_rate_per_sec_one_minute': {
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'value': metrics_data['incomingMessages_one_minute'],
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'min': 0,
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},
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'connections': {
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'value': metrics_data['open_connections'],
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'min': 0,
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},
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'network_out_total_1sec': {
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'value': metrics_data['written_bytes_1sec'],
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'min': 0,
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'unit': 'B',
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},
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'network_out_total_total': {
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'value': metrics_data['written_bytes_total'],
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'min': 0,
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'unit': 'B',
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},
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'network_in_1sec': {
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'value': metrics_data['read_bytes_1sec'],
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'min': 0,
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'unit': 'B',
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},
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'network_in_total': {
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'value': metrics_data['read_bytes_total'],
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'min': 0,
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'unit': 'B',
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},
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'entries_uncommitted': {
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'value': metrics_data['journal_entries_uncommitted'],
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'min': 0,
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},
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'jvm_memory_used': {
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'value': metrics_data['jvm_memory_heap_used'],
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'min': 0,
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'warn': jvm_mem_usage_warn,
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'crit': jvm_mem_usage_crit,
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'max': int(metrics_data['jvm_memory_heap_max']),
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'unit': 'B',
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},
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}
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jvm_mem_usage_state = get_state(int(metrics_data['jvm_memory_heap_used']), jvm_mem_usage_warn, jvm_mem_usage_crit,
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operator='gt')
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try:
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response = requests.get(f'{args.url}/system/notifications', headers=headers, auth=(args.token, 'token'),
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verify=args.insecure)
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response.raise_for_status()
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except requests.exceptions.RequestException as e:
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print(f'CRITICAL - Unable to query Graylog API: {e}')
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sys.exit(2)
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notifications = response.json()
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if notifications['total'] > 0:
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notif_str = 'Notifications:'
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for notification in notifications['notifications']:
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notif_str = notif_str + f'\n{notification["type"]}: {notification["description"]}'
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else:
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notif_str = 'No notifications'
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if input_data['state'] == 'RUNNING':
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text_result = f'Input "{input_data["message_input"]["title"]}" is running.'
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else:
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text_result = f'Input "{input_data["message_input"]["title"]}" is not running!'
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print(text_result)
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print(notif_str)
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sys.exit(checker.nagios.STATE_CRIT)
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if jvm_mem_usage_state != checker.nagios.STATE_OK:
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text_result += f' JVM memory usage is high!'
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exit_code = max(checker.nagios.STATE_OK, jvm_mem_usage_state)
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if notifications['total'] > 0:
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text_result += f' There are notifications!'
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if args.crit_notif:
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exit_code = checker.nagios.STATE_CRIT
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text_result = text_result + f' JVM memory usage: {int((perfdata["jvm_memory_used"]["value"] / metrics_data["jvm_memory_heap_max"]) * 100)}%, incoming rate (events/second for last minute): {perfdata["incoming_messages_rate_per_sec_one_minute"]["value"]}, connections: {perfdata["connections"]["value"]}, total network in: {human_readable_size(perfdata["network_in_total"]["value"], decimal_places=0)}' + '\n' + notif_str
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print_icinga2_check_status(text_result, exit_code, perfdata)
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sys.exit(exit_code)
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if __name__ == "__main__":
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try:
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main()
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except Exception as e:
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print(f'UNKNOWN: exception "{e}"')
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print(traceback.format_exc())
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sys.exit(checker.nagios.STATE_UNKNOWN)
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