81 lines
2.8 KiB
Python
81 lines
2.8 KiB
Python
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#!/usr/bin/env python
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import argparse
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import sys
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import traceback
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import mysql.connector
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from checker import nagios
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from checker.result import quit_check
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def main(args):
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try:
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connection = mysql.connector.connect(host=args.host, user=args.username, password=args.password)
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cursor = connection.cursor()
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cursor.execute("SHOW STATUS LIKE 'Threads_connected'")
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result = cursor.fetchone()
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active_connections = int(result[1])
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cursor.execute("SHOW VARIABLES LIKE 'max_connections'")
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result = cursor.fetchone()
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max_connections = int(result[1])
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cursor.close()
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connection.close()
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except mysql.connector.Error as e:
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quit_check(f'unable to connect to MySQL server: {e}', nagios.STATE_CRIT)
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return # make pycharm happy
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# ===================================================
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# Parse data
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warn_percent = args.warn_percent / 100
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crit_percent = args.crit_percent / 100
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active_connections_percent = active_connections / max_connections
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active_connections_percent_str = str(int(active_connections_percent * 100))
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if active_connections_percent > crit_percent:
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exit_code = nagios.STATE_CRIT
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elif active_connections_percent > warn_percent:
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exit_code = nagios.STATE_WARN
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else:
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exit_code = nagios.STATE_OK
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perfdata = {
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'percent_active_connections': {
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'value': active_connections_percent_str,
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'min': 0,
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'unit': '%',
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'warn': int(warn_percent * 100),
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'crit': int(crit_percent * 100)
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},
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'active_connections': {
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'value': active_connections,
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'min': 0,
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'max': max_connections,
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'warn': int(active_connections * warn_percent),
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'crit': int(active_connections * crit_percent)
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}
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}
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text_str = f'{active_connections}/{max_connections} ({active_connections_percent_str}%) of available connections used'
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quit_check(text_str, exit_code, perfdata)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='Check MySQL connections to a server.')
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parser.add_argument('--host', required=True, help='The IP of the MySQL server to connect to.')
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parser.add_argument('--username', required=True, help='Username.')
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parser.add_argument('--password', required=True, help='Password.')
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parser.add_argument('--warn-percent', default=50, type=int, help='Connections warning percentage. Default: 50%')
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parser.add_argument('--crit-percent', default=75, type=int, help='Connections critical percentage. Default: 75%')
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args = parser.parse_args()
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try:
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main(args)
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except Exception as e:
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print(f"UNKNOWN - {e}")
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traceback.print_exc()
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sys.exit(nagios.STATE_UNKNOWN)
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