Solved: EEM v2.3 + TCL

Florent CHETAIL · ‎09-17-2010

Hi all,

i had to make a capacity planning script for my customer but I really don't find an issue.
My main problem is that i'm using EEM v2.3 and I don't have all features.

So, i want to catch the result of this command : "sh platform hardware capacity fab | i Bus"

And if the current percentage exceed 60% i would like to send a syslog message and a SNMP trap.

alias exec Bus-load tclsh sup-bootdisk:Bus_load.tcl

event manager applet Bus
event none (i will replace it by a cron-entry event)
action 1 cli command "enable"
action 2 cli command "Bus-load" (lauch the tcl script)
action 3 syslog priority critical msg "Result : $_cli_result"

And here is my tcl script :

set commande [exec "sh platform hardware capacity fab | i Bus"]
set result [regexp {.[0-9]%,} $commande Current_pourcent]

set result [regexp {[0-9]+} $Current_pourcent Current]

set Value [expr $Peak]

puts "$Value";

But this always send a syslog (not only when it exceeds 60%).

I can also make the condition in TCL but I can't send syslog in TCL because I can't import namespace.

I had another idea to solve my problem but I don't find anything on this.

I can store this value in an OID object et get it with a LMS but I don't find the right command.

Can someone can help me on this way too?

Thanks for your help, I'm very confused.

Joe Clarke · ‎09-18-2010

You should be using EEM Tcl and not chaining together EEM with tclsh. Try the attached EEM Tcl policy. It's a none policy right now, but you can change it to a cron policy after you run your tests.

View solution in original post

Joe Clarke · ‎09-18-2010

You should be using EEM Tcl and not chaining together EEM with tclsh. Try the attached EEM Tcl policy. It's a none policy right now, but you can change it to a cron policy after you run your tests.

Florent CHETAIL · ‎09-19-2010

first, thank you for your response

I will test it tomorrow

Just in case, do you have an exemple of a TCL policy under your hand (may i copy the file in flash?)

Joe Clarke · ‎09-19-2010

I'm not sure I understand the question. I attached a sample Tcl policy to my last post that will do exactly what you want. To install it, create a directory on flash called policies, then copy that file into it. Then configure:

event manager directory user policy flash:/policies

event manager policy no_check_cap.tcl

Then run it with:

event manager run no_check_cap.tcl

Florent CHETAIL · ‎09-19-2010

yeah sorry for my bad english (i'm french)

but your answered my question

Florent CHETAIL · ‎09-20-2010

ok it seems to be working

i'll finalize my script this week

thanks a lot

Florent CHETAIL · ‎09-21-2010

I have a new problem if you can help me

This command works on my lab routers:

set output [run_cli [list "sh platform hardware capacity fab | i Bus"]]

But on routers in production the output variable is empty.

Is there something i don't know

Florent CHETAIL · ‎09-21-2010

ok i understand what's my problem on production

it seems that the command is sent in user mode.

We use an ACS on our network. Is this the cause?

Joe Clarke · ‎09-21-2010

If you're using AAA command authorization, you need to add the command:

event manager session cli username USER

Where USER is a username authorized to run all of the CLI commands in all of your EEM policies.

Florent CHETAIL · ‎09-22-2010

hi joseph, everything works thx

just a last question (if you know) :

is it possible to create a specific oid, and put the value in this oid?

Joe Clarke · ‎09-22-2010

You can use the EXPRESSION-MIB in your version of IOS to create an OID to store the value. A package that uses EEM to do this can be found in the downloads section of our EASy project at http://www.cisco.com/go/easy . Look for the cutom MIB package.