ZebOS routing metric control from LTM

it is easy to get RHI to be off if a minimum number of pool members are not present because you'd actually be disabling the virtual server and RHI would withdraw the route.

 

 

( you do this by monitoring an virtual server with an irule that checks `if { [active_members] >= X }` where X is the minimum number of pool members.)

 

 

To manipulate the routing metric itself, I think you would have to fall back to a script running on the Linux host that periodically checks the number of active members ( b pool external_gateway_pool show |grep active,up |sed -n '$=' ) and then modifies the routing metric using the zebos vtysh, which looks like it would require an Expect-like interaction.

 

 

You have bash, tcl, perl and python (in 10.1) to pick from when writing the script.