running BIGPIPE commands in an IRULE

Hi Graham,

The idea is that you'd run a bash or Perl script from cron on LTM which gets the failover status, writes the output to a file which is referenced in an external datagroup and then use iControl to force a reread of the datagroup contents. You could then access the datagroup from an iRule and check to see it returns active before calling HSL commands.

The external datagroup format is:

External Class Format:

class namevalue {
  "name1" := "value",
}

As you don't need a value, you could use:

class active_status_class {

"active",

}

For 10.2.x you can use 'bigpipe failover' or 'tmsh run /util bigpipe failover' to get the failover status. For 11.0.x you can use 'tmsh show /sys failover'

Here's a Perl iControl example from Joe for updating the datagroup:

http://devcentral.f5.com/wiki/iControl.PingExternalClass.ashx

Aaron