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- #!/usr/bin/env python3
- #
- # Copyright (c) 2017-2019 Joe Clarke <jclarke@cisco.com>
- # All rights reserved.
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions
- # are met:
- # 1. Redistributions of source code must retain the above copyright
- # notice, this list of conditions and the following disclaimer.
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions and the following disclaimer in the
- # documentation and/or other materials provided with the distribution.
- #
- # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- import os
- import re
- import sys
- import time
- import json
- import paramiko
- import CLEUCreds
- CACHE_FILE = '/home/jclarke/mac_counts.dat'
- CACHE_FILE_TMP = CACHE_FILE + '.tmp'
- commands = [
- {
- 'command': 'show mac address-table count | inc Dynamic Address Count',
- 'pattern': r'Dynamic Address Count:\s+(\d+)',
- 'metric': 'totalMacs',
- 'devices': ['core1-l3c', 'core2-l3c']
- },
- {
- 'command': 'show mac address-table dynamic | inc Total',
- 'pattern': r'Total.*: (\d+)',
- 'metric': 'totalMacs',
- 'devicePatterns': [
- {
- 'pattern': '10.127.0.{}',
- 'range': {
- 'min': 1,
- 'max': 60
- }
- }
- ]
- },
- {
- 'command': 'show ip arp summary | inc IP ARP',
- 'pattern': r'(\d+) IP ARP entries',
- 'metric': 'arpEntries',
- 'devicePatterns': [
- {
- 'pattern': '10.127.0.{}',
- 'range': {
- 'min': 1,
- 'max': 60
- }
- }
- ]
- }
- ]
- def get_results(ssh_client, ip, command, pattern, metric):
- response = ''
- try:
- ssh_client.connect(ip, username=CLEUCreds.NET_USER, password=CLEUCreds.NET_PASS,
- timeout=5, allow_agent=False, look_for_keys=False)
- chan = ssh_client.invoke_shell()
- output = ''
- try:
- chan.sendall('term length 0\n')
- chan.sendall('term width 0\n')
- chan.sendall('{}\n'.format(command))
- j = 0
- while j < 10:
- if chan.recv_ready():
- break
- time.sleep(.5)
- j += 1
- while chan.recv_ready():
- output += chan.recv(65535)
- except Exception as ie:
- response = '{}{{idf="{}"}}'.format(metric, ip)
- sys.stderr.write(
- 'Failed to get MACs from {}: {}\n'.format(ip, ie))
- return response
- m = re.search(pattern, output)
- if m:
- response = '{}{{idf="{}"}} {}'.format(metric, ip, m.group(1))
- else:
- response = '{}{{idf="{}"}} 0'.format(metric, ip)
- except Exception as e:
- ssh_client.close()
- sys.stderr.write('Failed to connect to {}: {}\n'.format(ip, e))
- return ''
- ssh_client.close()
- return response
- def get_metrics():
- response = []
- ssh_client = paramiko.SSHClient()
- ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
- for command in commands:
- if 'devices' in command:
- for device in command['devices']:
- response.append(get_results(ssh_client, device, command['command'], command['pattern'], command['metric']))
- else:
- for pattern in command['devicePatterns']:
- if 'range' in pattern:
- for i in range(pattern['range']['min'], pattern['range']['max']):
- response.append(get_results(ssh_client, pattern['pattern'].format(str(i)), command[
- 'command'], command['pattern'], command['metric']))
- else:
- for sub in pattern['subs']:
- response.append(get_results(ssh_client, pattern['pattern'].format(sub), command[
- 'command'], command['pattern'], command['metric']))
- return response
- if __name__ == '__main__':
- response=get_metrics()
- fd=open(CACHE_FILE_TMP, 'w')
- json.dump(response, fd, indent=4)
- fd.close()
- os.rename(CACHE_FILE_TMP, CACHE_FILE)
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