#!/usr/bin/python # # This file is part of Ansible # # Ansible is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Ansible is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Ansible. If not, see . # DOCUMENTATION = ''' --- module: nxos_ping version_added: "2.1" short_description: Tests reachability using ping from Nexus switch description: - Tests reachability using ping from switch to a remote destination. extends_documentation_fragment: nxos author: - Jason Edelman (@jedelman8) - Gabriele Gerbino (@GGabriele) options: dest: description: - IP address or hostname (resolvable by switch) of remote node. required: true count: description: - Number of packets to send. required: false default: 2 source: description: - Source IP Address. required: false default: null vrf: description: - Outgoing VRF. required: false default: null ''' EXAMPLES = ''' # test reachability to 8.8.8.8 using mgmt vrf - nxos_ping: dest=8.8.8.8 vrf=management host={{ inventory_hostname }} # Test reachability to a few different public IPs using mgmt vrf - nxos_ping: dest={{ item }} vrf=management host={{ inventory_hostname }} with_items: - 8.8.8.8 - 4.4.4.4 - 198.6.1.4 ''' RETURN = ''' action: description: - Show what action has been performed returned: always type: string sample: "PING 8.8.8.8 (8.8.8.8): 56 data bytes" updates: description: Show the command sent returned: always type: list sample: ["ping 8.8.8.8 count 2 vrf management"] count: description: Show amount of packets sent returned: always type: string sample: "2" dest: description: Show the ping destination returned: always type: string sample: "8.8.8.8" rtt: description: Show RTT stats returned: always type: dict sample: {"avg": "6.264","max":"6.564", "min": "5.978"} packets_rx: description: Packets successfully received returned: always type: string sample: "2" packets_tx: description: Packets successfully transmitted returned: always type: string sample: "2" packet_loss: description: Percentage of packets lost returned: always type: string sample: "0.00%" ''' def get_summary(results_list, reference_point): summary_string = results_list[reference_point+1] summary_list = summary_string.split(',') pkts_tx = summary_list[0].split('packets')[0].strip() pkts_rx = summary_list[1].split('packets')[0].strip() pkt_loss = summary_list[2].split('packet')[0].strip() summary = dict(packets_tx=pkts_tx, packets_rx=pkts_rx, packet_loss=pkt_loss) if 'bytes from' not in results_list[reference_point-2]: ping_pass = False else: ping_pass = True return summary, ping_pass def get_rtt(results_list, packet_loss, location): if packet_loss != '100.00%': rtt_string = results_list[location] base = rtt_string.split('=')[1] rtt_list = base.split('/') min_rtt = rtt_list[0].lstrip() avg_rtt = rtt_list[1] max_rtt = rtt_list[2][:-3] rtt = dict(min=min_rtt, avg=avg_rtt, max=max_rtt) else: rtt = dict(min=None, avg=None, max=None) return rtt def get_statistics_summary_line(response_as_list): for each in response_as_list: if '---' in each: index = response_as_list.index(each) return index def execute_show(cmds, module, command_type=None): try: if command_type: response = module.execute(cmds, command_type=command_type) else: response = module.execute(cmds) except ShellError: clie = get_exception() module.fail_json(msg='Error sending {0}'.format(cmds), error=str(clie)) return response def execute_show_command_ping(command, module, command_type='cli_show_ascii'): cmds = [command] if module.params['transport'] == 'cli': body = execute_show(cmds, module) elif module.params['transport'] == 'nxapi': body = execute_show(cmds, module, command_type=command_type) return body def get_ping_results(command, module, transport): ping = execute_show_command_ping(command, module)[0] if not ping: module.fail_json(msg="An unexpected error occurred. Check all params.", command=command, destination=module.params['dest'], vrf=module.params['vrf'], source=module.params['source']) elif "can't bind to address" in ping: module.fail_json(msg="Can't bind to source address.", command=command) elif "bad context" in ping: module.fail_json(msg="Wrong VRF name inserted.", command=command, vrf=module.params['vrf']) else: splitted_ping = ping.split('\n') reference_point = get_statistics_summary_line(splitted_ping) summary, ping_pass = get_summary(splitted_ping, reference_point) rtt = get_rtt(splitted_ping, summary['packet_loss'], reference_point+2) return (splitted_ping, summary, rtt, ping_pass) def main(): argument_spec = dict( dest=dict(required=True), count=dict(required=False, default=2), vrf=dict(required=False), source=dict(required=False), state=dict(required=False, choices=['present', 'absent'], default='present'), ) module = get_module(argument_spec=argument_spec, supports_check_mode=True) destination = module.params['dest'] count = module.params['count'] vrf = module.params['vrf'] source = module.params['source'] state = module.params['state'] if count: try: if int(count) < 1 or int(count) > 655350: raise ValueError except ValueError: module.fail_json(msg="'count' must be an integer between 1 " "and 655350.", count=count) OPTIONS = { 'vrf': vrf, 'count': count, 'source': source } ping_command = 'ping {0}'.format(destination) for command, arg in OPTIONS.iteritems(): if arg: ping_command += ' {0} {1}'.format(command, arg) ping_results, summary, rtt, ping_pass = get_ping_results( ping_command, module, module.params['transport']) packet_loss = summary['packet_loss'] packets_rx = summary['packets_rx'] packets_tx = summary['packets_tx'] results = {} results['updates'] = [ping_command] results['action'] = ping_results[1] results['dest'] = destination results['count'] = count results['packets_tx'] = packets_tx results['packets_rx'] = packets_rx results['packet_loss'] = packet_loss results['rtt'] = rtt results['state'] = module.params['state'] if ping_pass and state == 'absent': module.fail_json(msg="Ping succeeded unexpectedly", results=results) elif not ping_pass and state == 'present': module.fail_json(msg="Ping failed unexpectedly", results=results) else: module.exit_json(**results) from ansible.module_utils.basic import * from ansible.module_utils.urls import * from ansible.module_utils.shell import * from ansible.module_utils.netcfg import * from ansible.module_utils.nxos import * if __name__ == '__main__': main()