Accessing pool members by IP/PORT in v9x?

Question

I have an ASP.NET application I wrote with Big-IP/iControl 4.5/4.6 that makes a lot of use of the old ITCMLocalLB.Node.get_state, ITCMLocalLB.Node.set_state, ITCMLocalLB.Monitor2.get_instance_state and ITCMLocalLB.Monitor2.set_instance_state 
&nbsp;  
&nbsp; It worked well before because I didn't have to know pool names and could deal with pool member status directly.  Since I don't manage the Big-IPs, but instead, am an application support person, I have little control over pool configurations, or access any configuration information on the load balancers, for that matter. 
&nbsp;  
&nbsp; Our network guys just upgraded the Big-IPs to 6800s running 9.1 and now I can't seem to find equivalent methods to make my app work with the new version of iControl.  Anyone see something I don't?  Is my only option to switch to using names to access pool members?  Oh yeah, I have 2 days to get the app back up and functioning as before.  'Lil help?

joe_pruitt · Answer

The underlying architecture in 9.x changed to not include Node Servers (addr:port) as independent objects.  They now only exist within the context of the pool that they are defined.  So, now if you disable a node server it can still be enabled in another pool. 
  
 We now have only Node Addresses (addr) (accessible via the LocalLB::NodeAddress interface) at the top level.  So, you can enable/disable an entire address at a global level, just not a address:port combination. 
  
 With that being said, there are several things you can do.  You can query all the pools with LocalLB::Pool::get_list() and pass that into LocalLB::Pool::get_member() to return you all the members defined on the system.  Then you can use the LocalLB::PoolMember interface to query or set the status of the members. 
  
 In 9.x the methods for controlling the state have changed a bit as well.   They are: 
  
  SessionStatus[] get/set_session_status( 
     in String[] node_addresses 
 ); 
  
 and 
  
 MonitorStatus[] get/set_monitor_status( 
     in String[] node_addresses 
 ); 
  
 get/set_session_status() will query or set whether or not new sessions are allowed on the address.  get/set_monitor_state()  will query or set whether or not any traffic is allowed on the address.

Alternately, maybe just the address is all you care about as you are only running a single service on each backend node or you care if any of the running services is down.  If that is the case, then you can use the LocalLB::NodeAddress to do what you were doing before. 
  
 Hopefully this helps.  If not, post your application logic and I'll see what I can do to help out further. 
  
 -Joe

alex_sinclair_1 · Answer

Joe, 
&nbsp;  
&nbsp; Thanks for the info. I was afraid you'd say something like that.  For the time being, I have thrown together a really quick and dirty app to allow my team to work with the node addresses until I can re-architect the bigger prettier one. 
&nbsp;  
&nbsp; Thanks for the prompt response!

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Accessing pool members by IP/PORT in v9x?

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