DX Unified Infrastructure Management

Hi

I  have minimal scripting knowledge and have a request to stop and start two services and kill the process of one of the services if it fails to stop gracefully.This script will be launched from an AO profile on a custom alarm I have created.

Is there a simple way to do this via a LUA script ?

Many thanks

Dave 

Hi,

Assume your alarm message is the pid of the process to be killed:

msg = alarm.get("")

arguments = pds.create()
pds.putInt(arguments, "pid", msg.message)
nimbus.request("/domain/hub/robot/processes", "kill_process", arguments)

 -jon

Hi Jon,

Thanks for the info, the alarm message is a SQL_response message which checks if a table has updated in a given time period, if not then I require an AO profile to run a script to do the following.

Stop Windows service on server A

Kill process on server B

Start Windows service on server A

Start Windows service on server B

I have NTservices and Processes probe deplyed to both.

Kind Regards

Dave 

Hi,

Something like this should work. Didn't test it, but hope it helps anyway:

service1_pds = pds.create()
pds.putString(service1_pds, "name", "service_name")

service2_pds = pds.create()
pds.putString(service2_pds, "name", "service_name")

procs, rc = nimbus.request("/Domain/Hub/robot/processes", "list_processes")
process_pds = pds.create()

nimbus.request("/Domain/Hub/robotA/ntservices", "stop_service", service1_pds)

for _,process in pairs (procs) do
   if string.match(process.executable, "C:\\path\\to\\process.exe") then
      pds.putInt(process_pds, "pid", process.process_id)
      nimbus.request("/Domain/Hub/robotB/processes", "kill_process", process_pds)
   end
end

sleep(10)

nimbus.request("/Domain/Hub/robotA/ntservices", "start_service", service1_pds)
nimbus.request("/Domain/Hub/robotB/ntservices", "start_service", service2_pds)

Hi Jon

I have the services restart of the script working but can't get the kill_process to work, here is my edited version as a test on the print spooler. 

procs, rc = nimbus.request("/Domain/NMSTunnelServer1/rt-w28s-006/processes", "list_processes")

process_pds = pds.create()

for _,process in pairs (procs) do

   if string.match(process.executable, "C:\Windows\System32\spoolsv.exe") then

      pds.putInt(process_pds, "pid", process.process_id)

      nimbus.request("/Domain/NMSTunnelServer1/rt-w28s-006/processes", "kill_process", process_pds)

   end

end

Kind regards

Dave

Thanks Jon

Works a treat, thanks for your help.

Kind Regards

Dave

Hi

Still having an issue with this script killing the process , I have tried with a differant process on the same server and this works fine the only differance I can see is that this particular process does not run as local system but as administrator.

Is there a way to pass this information through via the script? 

forgot to post the script here it is. 

procs, rc = nimbus.request("/Domain/CATraffic/ca-data-svr/processes", "list_processes")

process_pds = pds.create()

for _,process in pairs (procs) do

   if string.match(process.executable, "C:\\Program Files\\mxData Limited\\CA ANPR Database Server\\binary\\utmc-scheduler.exe") then       pds.putInt(process_pds, "pid", process.process_id)

      nimbus.request("/Domain/CATraffic/ca-data-svr/processes", "kill_process", process_pds)

   end

end

Hi,

You might want to modify it to do some error checking:

rc, err = nimbus.request("/Domain/CATraffic/ca-data-svr/processes", "kill_process", process_pds)

print (rc)

print (err)

It might nto have  the "err" which is error message in text form, not all functions return it. Can't remember now if this does, you'll have to try it out.

You might also want to put something like print("test") inside the if for string.match to make sure that it matches the process. You can check the executable names from processes probe callback "list_processes". You can do the callback in IM by pressing ctrl+p when probe is chosen.

-jon

Thanks Jon

Finaly got the answer now it didn't like the - in utmc-scheduler.exe

this works

ifstring.match (process.executable, "C:\\Program Files\\mxData Limited\\CA ANPR Database Server\\binary\\utmc%-scheduler.exe")

then

Good catch. In case you did not figure out why you had the issue with the - character...

The 2nd argument to the string.match() function is a pattern, not a literal string. In Lua patterns, the - character is a quantifier and indicates to match 0 or more occurrences of the preceding character, using the shortest match possible. It is the non-greedy version of the * character quantifier. I always struggle to remember that the - character is special because most Lua pattern syntax matches regular expression syntax, but the - character is one exception.

A very good quick reference for Lua 5.1 (and one that I use frequently when coding in Lua) is available here:

http://lua-users.org/wiki/LuaShortReference