Hello,
here’s an example of Nagios plugin written in Python interacting with ROS framework.
#!/usr/bin/env python
import sys
sys.path.append("/home/schreiner/catkin_ws_hydro/install/lib/python2.7/dist-packages")
sys.path.append("/opt/ros/hydro/lib/python2.7/dist-packages")
import os
os.environ['PATH'] = "/opt/ros/hydro/bin:" + os.environ['PATH']
os.environ['ROS_PACKAGE_PATH']= '/home/schreiner/catkin_ws_hydro/install/share:/home/schreiner/catkin_ws_hydro/install/stacks:/opt/ros/hydro/share:/opt/ros/hydro/stacks'
from optparse import OptionParser
import rospy
import rosnode
import os
import roslib
import sys
roslib.load_manifest('linux_hardware')
from linux_hardware.msg import LaptopChargeStatus
from diagnostic_msgs.msg import DiagnosticStatus, DiagnosticArray, KeyValue
# Exit statuses recognized by Nagios
UNKNOWN = -1
OK = 0
WARNING = 1
CRITICAL = 2
# TEMPLATE FOR READING PARAMETERS FROM COMMANDLINE
parser = OptionParser()
parser.add_option("-H", "--host", dest="host", default='localhost', help="A message to print after OK - ")
parser.add_option("-w", "--warning", dest="warning", default='40', help="A message to print after OK - ")
parser.add_option("-c", "--critical", dest="critical", default='20', help="A message to print after OK - ")
(options, args) = parser.parse_args()
# Set turtlebot ROS Master URI
os.environ['ROS_MASTER_URI'] = '
http://' + options.host + ':11311'
kobuki_charge = None
kobuki_percentage = None
def callback_kobuki(data):
global kobuki_charge
global kobuki_percentage
ready = False
while not ready:
for current in data.status:
if current.name == "mobile_base_nodelet_manager: Battery":
for value in current.values:
if value.key == "Charge (Ah)":
kobuki_charge = value.value
if value.key == "Percent":
kobuki_percentage = value.value
ready = True
time = rospy.get_time()
kobuki_percentage = int(float(kobuki_percentage))
rospy.signal_shutdown(0)
def listener():
rospy.init_node('check_battery_kobuki', anonymous=True, disable_signals=True)
rospy.Subscriber("diagnostics", DiagnosticArray , callback_kobuki)
rospy.spin()
def myhook():
if kobuki_percentage < int(options.critical):
print "CRITICAL - Kobuki Charge Percent %s | kobuki_battery=%s" % (kobuki_percentage,kobuki_percentage)
exiting(CRITICAL)
elif kobuki_percentage < int(options.warning):
print "WARNING - Kobuki Charge Percent %s | kobuki_battery=%s" % (kobuki_percentage,kobuki_percentage)
exiting(WARNING)
else:
print "OK - Kobuki Charge Percent %s | kobuki_battery=%s" % (kobuki_percentage,kobuki_percentage)
exiting(OK)
def exiting(value):
try:
sys.stdout.flush()
os._exit(value)
except:
pass
if __name__ == '__main__':
try:
master = rospy.get_master()
master.getPid()
except Exception:
print "UNKNOWN - Roscore not available"
exiting(UNKNOWN)
try:
if len(sys.argv) < 5:
print "usage %s -c <critical> -w <warning>" % (sys.argv[0])
exiting(UNKNOWN)
rospy.on_shutdown(myhook)
listener()
except rospy.ROSInterruptException:
exit
--
Guillaume Schreiner
Research Engineer
Network Research Group
ICube - UMR CNRS 7357
Strasbourg University
Le 25 juin 2014 à 13:47, Dominik Kirchner <
kirchner@vs.uni-kassel.de> a écrit :
> Hi,
>
> the Nagios plugin needs to pubish its monitoring data on the /diagnostic topic. Msg type needs to be a DiagnosticArray with DiagnosticStatus items for each entity you have monitored.
>
> You will find good tutorials on how use the ROS diagnostic stack on http://wiki.ros.org/diagnostics/Tutorials.
>
> Best Regards,
> Dominik Kirchner
>
>
> On 24.06.2014 22:40, Felipe Roman wrote:
>> Hi Everyone,
>>
>> Has anyone have used ROS diagnostics before ? I am working on a research work to integrate ROS with one IT monitoring tool (Nagios). Basically this IT monitoring tool will be able to get information about the Robot Sensor Status.
>>
>> I already have implemented the communication between them (Nagios plugin reading ROS service information) and now I would like to know how to create and configure a ROS diagnostic topic to test it.
>>
>> Any ideas will be welcome, thanks in advance
>>
>> --
>> Best Regards,
>> Felipe Roman
>> Phone 55 51 8454 8110
>> LinkedIn http://au.linkedin.com/in/feliperoman
>>
>>
>> _______________________________________________
>> ros-users mailing list
>> ros-users@lists.ros.org
>> http://lists.ros.org/mailman/listinfo/ros-users
>
> --
> --
> -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> -- Dominik Kirchner - kirchner@vs.uni-kassel.de - T. +49 561 804-6279
> -- Univ. Kassel - FB 16, Wilhelmshöher Allee 73, D-34121 Kassel
> -- http://www.uni-kassel.de/eecs/fachgebiete/vs/team/person/677-Dominik-Kirchner.html
> ------------------------------------------------------------------------
> _______________________________________________
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> ros-users@lists.ros.org
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