Forum Discussion

Altostratus

Jan 16, 2012

iRule Syntax

I have an iRule where I am using the set command to create a pool name to a variable. The command is "set hostpool pool_$msrdp". The command works the way it is, but I want to add additional characters to the end of the pool name. For example, the way the command is now, the pool name that is assigned to hostpool is "pool_0A1", where 0A1 is the contents of $msrdp. But I want the pool name to be "pool_0A1_rdp". How would I modify the command to include the "_rdp"?

nitass
Employee
Jan 16, 2012
can you try pool_${msrdp}_rdp?
kend
Altostratus
Jan 16, 2012
That worked. Thanks!
hooleylist
Cirrostratus
Jan 16, 2012
Hi Ken,

If you're trying to use a dynamically named pool you should use catch to handle errors where the pool name doesn't exist:

http://www.tcl.tk/man/tcl8.4/TclCmd/catch.htm

if {[catch {pool $my_pool} result]==0}{ Assigned $my_pool pool successfully } else { Failed to assign $my_pool pool }

Aaron