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check_arista.py
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check_arista.py
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#!/usr/bin/env python
# Author: Jon Schipp <jonschipp@gmail.com, jschipp@illinois.edu>
import sys
import os
import argparse
import json
import filecmp
import time
from jsonrpclib import Server
# Nagios exit codes
NAGIOS_OK = 0
NAGIOS_WARNING = 1
NAGIOS_CRITICAL = 2
NAGIOS_UNKNOWN = 3
# Build accepted check type options for argparse
status_checks=['protocol_status', 'interface_status', 'duplex_status', 'bandwidth_status']
rate_checks=['input_rate', 'output_rate']
other_checks=['dumbno', 'link_status', 'traffic_status']
all_checks= status_checks + rate_checks + other_checks
result = NAGIOS_OK
# Create dictionaries to minimize code
DIRECTION_MAP = {
'input_rate': 'inBitsRate',
'output_rate': 'outBitsRate',
}
INTERFACE_MAP = {
'input_rate': '9/1-24',
'output_rate': '3/1-16',
}
STATUS_MAP = {
'interface_status': 'interfaceStatus',
'protocol_status': 'lineProtocolStatus',
'duplex_status': 'duplex',
'bandwidth_status': 'bandwidth',
}
STATUS_MSG = {
0: 'OK',
1: 'WARNING',
2: 'CRITICAL',
3: 'UNKNOWN',
}
def cred_usage():
doc = '''
Could not open file! Does it exist? Is it valid JSON?
A file containing the API credentials in JSON should be read in using ``-f <file>''
Its contents should be formatted like this:
{
"user":"aristauser",
"password":"asdfasdfasdfasdf"
}
'''[1:]
return doc
def check_rate(switch, direction, interfaces, skip):
response = switch.runCmds( 1, ["show interfaces Ethernet" + interfaces] )
ifs = response[0]["interfaces"]
d={}
rc=[]
for p,info in ifs.items():
if p in skip:
continue
if info["description"] is None:
continue
rate = info["interfaceStatistics"].get(direction, 0) / (1000**2)
d[p] = [rate, threshold(rate)]
for nic in d:
status=d[nic][1]
rc.append(status)
print "%s: %s Mbps: %.2f" % (STATUS_MSG[status], nic, d[nic][0])
return rc
def check_status(switch, option, devices, skip):
status_type=option
crit_items=["connected", "up", "duplexFull", 10000000000]
response = switch.runCmds( 1, ["show interfaces"])
ifs = response[0]["interfaces"]
result = NAGIOS_OK
for p,info in ifs.items():
if p in skip:
continue
if status_type == "bandwidth":
bw=crit_items[-1]
if int(info[status_type]) < bw:
print "CRITICAL: %s Bandwidth: %dGbps" % (p, info[status_type] / (1000**3))
result = NAGIOS_CRITICAL
continue
if devices != "None":
if p in devices:
if info[status_type] not in crit_items:
result = NAGIOS_CRITICAL
print "CRITICAL: %s %s" % (p, info[status_type])
continue
else: print "SUCCESS: %s %s" % (p, info[status_type])
if devices == "None":
if info["description"] is None:
continue
if status_type not in info:
continue
if info[status_type] not in crit_items:
result = NAGIOS_CRITICAL
print "CRITICAL: %s %s" % (p, info[status_type])
if result == 0: print "SUCCESS: %s check successful" % status_type
return result
def check_traffic_status(switch, skip):
response = switch.runCmds( 1, ["show interfaces"])
ifs = response[0]["interfaces"]
result = 0
for p,info in ifs.items():
if p in skip:
continue
if info["description"] is None:
continue
if info["lineProtocolStatus"] == "notPresent":
continue
if info["interfaceStatus"] == "notconnect":
continue
in_traffic = info["interfaceStatistics"]["inPktsRate"]
out_traffic = info["interfaceStatistics"]["outPktsRate"]
if in_traffic == 0 and out_traffic == 0:
print "CRITICAL: %s In: %s Out: %s" % (p, in_traffic, out_traffic)
result=1
if result == 1:
return NAGIOS_CRITICAL
else:
print "SUCCESS: Traffic is being processed by all connected interfaces"
return NAGIOS_OK
def check_dumbno(switch, skip):
path = '/root/%s' % os.path.basename(sys.argv[0]) + '-dumbno.state'
current = path + '.current'
old = path + '.old'
response = switch.runCmds( 1, ["enable", "show ip access-lists"] )
acl_lists = response[1]["aclList"]
rules=[]
for list in acl_lists:
name = list["name"]
if name in skip:
continue
for rule in list["sequence"]:
if "permit" in rule["text"]:
continue
line = name + " - " + rule["text"]
rules.append(line)
if os.path.isfile(current):
os.rename(current, old)
save_file(rules, current)
return compare_file(current, old)
def check_link_status(switch, skip):
path = '/root/%s' % os.path.basename(sys.argv[0]) + '-flap.state'
current = path + '.current'
old = path + '.old'
key = "lastStatusChangeTimestamp"
response = switch.runCmds( 1, ["show interfaces"])
ifs = response[0]["interfaces"]
data=[]
for p,info in ifs.items():
if p in skip:
continue
if key not in info:
continue
print p, info[key]
if os.path.isfile(current):
os.rename(current, old)
save_file(data, current)
return compare_file(current, old)
def compare_file(current, old):
if not os.path.isfile(current):
print "First run, waiting to create history"
return NAGIOS_UNKNOWN
if not os.path.isfile(old):
return NAGIOS_UNKNOWN
if filecmp.cmp(current, old):
print "CRITICAL: Entries haven't changed"
return NAGIOS_CRITICAL
print "SUCCESS: Entries rules have changed"
return NAGIOS_OK
def save_file(data, path):
file = "\n".join(data)
try:
with open(path, 'w') as f:
f.write(file)
except IOError:
print "Unable to open file for writing"
exit(NAGIOS_UNKNOWN)
def threshold(value):
if value >= crit:
return NAGIOS_CRITICAL
if value >= warn:
return NAGIOS_WARNING
return NAGIOS_OK
def arguments():
global crit
global warn
parser = argparse.ArgumentParser(description='Check Arista stats')
parser.add_argument("-s", "--skip", type=str, help="Items to skip from check")
parser.add_argument("-d", "--device", type=str, help="Devices to check (def: all) (sep: ,) e.g. Ethernet1/1/3")
parser.add_argument("-T", "--type", type=str, help="Type of check", choices=all_checks)
parser.add_argument("-H", "--host", type=str, help="<host:port> e.g. arista.company.org:443", required=True)
parser.add_argument("-f", "--filename", type=str, help="Filename that contains API credentials", required=True)
parser.add_argument("-c", "--critical", type=int, help="Critical value in Mbps")
parser.add_argument("-w", "--warning", type=int, help="Warning value in Mbps")
args = parser.parse_args()
option = args.type
host = args.host
filename = args.filename
crit = args.critical
warn = args.warning
if args.skip:
skip = args.skip.split(",")
else:
skip = "None"
if args.device:
devices = args.device.split(",")
else:
devices = "None"
return(option, host, filename, devices, skip)
def get_creds(filename):
try:
with open(filename, 'r') as f:
creds = json.load(f)
return creds
except IOError:
print cred_usage()
exit(NAGIOS_UNKNOWN)
def main():
option, host, filename, devices, skip = arguments()
creds = get_creds(filename)
user = creds["user"]
password = creds["password"]
url = 'https://' + user + ':' + password + host + '/command-api'
switch = Server(url)
if option == "dumbno":
exit(check_dumbno(switch, skip))
elif option == "traffic_status":
exit(check_traffic_status(switch, skip))
elif option == "link_status":
exit(check_link_status(switch, skip))
elif option in status_checks:
option = STATUS_MAP[option]
exit(check_status(switch, option, devices, skip))
elif option in rate_checks:
direction = DIRECTION_MAP[option]
interfaces = INTERFACE_MAP[option]
exit(max(check_rate(switch, direction, interfaces, skip)))
else:
print "Invalid option"
exit(NAGIOS_UNKNOWN)
if __name__ == "__main__":
main()