LUA script to count open alarms from Dirscan and alert if too few

[Sam Green]

Hi all,

 

I've looking into a way of counting open alarms on the alarm console and alerting if there are too few.

I found this script which apparently does the job, but I'm struggling to amend it to do what I'm looking for..The script runs without errors but doesnt send the alert.

 

list = alarm.list()

local match_count = {}

local current_count = 0

 

for i=1, #list do

   alm = list[i]

   hub = alm.hub

 

  

   match = regexp( alm.message, "/Average/")

   match = (match and regexp (hub, "/^HubName-/"))

  

   if match == true then

     

     

      if match_count[hub] == nil then

         current_count = 0

      else

         current_count = match_count[hub]

      end

 

      current_count = current_count +1

      match_count[hub] = current_count

   end

end

 

for hub, alarm_count in pairs(match_count) do

   suppression_key = "snmpagent-"..hub

   if alarm_count <=20 then

      message = "Excessive number of snmp agents not responding on " .. hub .. " with a total of " .. alarm_count .. " alarms"

      print (message)

 

      nimbus.alarm (4, message , suppression_key)

   end   

end

[Gene Howard]

I would add print() message after each line and display value you are checking or expecting

This will put the information in the nas log.

This is about the only good way to trouble shoot a script

example

 

print("line 1")

print("hub:"..hub)

[Anon Anon]

2 possibilities:

- you string "/^HubName-/" is not matching a hub name

- you have more than 20 matching messages

Like Gene said, if you add after: if match == true a line like:

  print("hub: "..hub.." count: "..current_count.." msg: "..alm.message)

you will see in your nas script execute window a print for each matchine message

[Sam Green]

Thanks all,

 

Like this? I'm still not getting anything in the execute window

 

list = alarm.list()

local match_count = {}

local current_count = 0

 

 

for i=1, #list do

   alm = list[i]

   hub = alm.hub

 

 

  

   match = regexp(alm.message, "/Average/")

   match = regexp (hub, "/^mdswust1-/")

  

   if match == true then

     

print("hub: "..hub.." count: "..current_count.." msg: "..alm.message)

     

      if match_count[hub] == nil then

         current_count = 0

      else

         current_count = match_count[hub]

      end

 

 

      current_count = current_count +1

      match_count[hub] = current_count

   end

end

 

 

for hub, alarm_count in pairs(match_count) do

   if alarm_count <=20 then

      message = "Excessive number of snmp agents not responding on " .. hub .. " with a total of " .. alarm_count .. " alarms"

      print (message)

 

 

      nimbus.alarm (2, message , suppression_key)

   end   

end

[Anon Anon]

Do you have at the moment you run the script messages containing: Average in your console?

(I tested your script with another wordstring and another hubname and this worked fine.)

Note: if you put the print line 2 lines higher you will see all console messages he is processing.

[Sam Green]

Thanks Luc,

 

I've raised the line by two and yes it does display the alerts, but they all appear to have  count of 0, even though in the alarm console they most of them have a count of more than 0.

 

I've changed the expected value from >20 to <20 but neither send an alarm..

[Sam Green]

Would you mind posting your working example here?

[Anon Anon]

My working script is exactly yours. 

But if the count in the print stays 0 this means that you don't have a match in the regular expression tests.

You can make it a little bit easier by changing the line:

match = regexp (hub, "/^mdswust1-/")

into

--match = regexp (hub, "/^mdswust1-/")

(so that line is in comment)

When you execute now your script it will only match (count) alarms messages that contain Average