Node's availabilty

There's not a single method to call to determine whether a given node is a member of a pool. The most straightforward way is to call the Pool::get_membert() passing in the results from Pool::get_list(). This will return you a 2-d array containing pool members from all the input pools. Iterate through these arrays and if you don't find a match, it's not in there.

 

 

Here's a perl sample that takes as input a node address and iterates through all the pool members of all pools and prints out matches. Hopefully it will give you something to get started with.

 

 

!/usr/bin/perl
----------------------------------------------------------------------------
 The contents of this file are subject to the "END USER LICENSE AGREEMENT FOR F5
 Software Development Kit for iControl"; you may not use this file except in
 compliance with the License. The License is included in the iControl
 Software Development Kit.
 Software distributed under the License is distributed on an "AS IS"
 basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 the License for the specific language governing rights and limitations
 under the License.
 The Original Code is iControl Code and related documentation
 distributed by F5.
 The Initial Developer of the Original Code is F5 Networks,
 Inc. Seattle, WA, USA. Portions created by F5 are Copyright (C) 1996-2004 F5 Networks,
 Inc. All Rights Reserved.  iControl (TM) is a registered trademark of F5 Networks, Inc.
 Alternatively, the contents of this file may be used under the terms
 of the GNU General Public License (the "GPL"), in which case the
 provisions of GPL are applicable instead of those above.  If you wish
 to allow use of your version of this file only under the terms of the
 GPL and not to allow others to use your version of this file under the
 License, indicate your decision by deleting the provisions above and
 replace them with the notice and other provisions required by the GPL.
 If you do not delete the provisions above, a recipient may use your
 version of this file under either the License or the GPL.
----------------------------------------------------------------------------
use SOAP::Lite + trace => qw(method debug);
use SOAP::Lite;
use MIME::Base64;
BEGIN {push (@INC, "..");}
use iControlTypeCast;
----------------------------------------------------------------------------
 Validate Arguments
----------------------------------------------------------------------------
my $sHost = $ARGV[0];
my $sPort = $ARGV[1];
my $sUID = $ARGV[2];
my $sPWD = $ARGV[3];
my $sNode = $ARGV[4];
my $sProtocol = "https";
if ( ("80" eq $sPort) or ("8080" eq $sPort) )
{
  $sProtocol = "http";
}
if ( ($sHost eq "") or ($sPort eq "") or ($sUID eq "") or ($sPWD eq "") )
{
  die ("Usage: NodeInPools.pl host port uid pwd [node_addr]\n");
}
----------------------------------------------------------------------------
 Transport Information
----------------------------------------------------------------------------
sub SOAP::Transport::HTTP::Client::get_basic_credentials
{
  return "$sUID" => "$sPWD";
}
$Pool = SOAP::Lite
  -> uri('urn:iControl:LocalLB/Pool')
  -> proxy("$sProtocol://$sHost:$sPort/iControl/iControlPortal.cgi");
eval { $Pool->transport->http_request->header
(
  'Authorization' => 
    'Basic ' . MIME::Base64::encode("$sUID:$sPWD", '')
); };
&findNodeInPool($sNode);
----------------------------------------------------------------------------
 checkResponse
----------------------------------------------------------------------------
sub checkResponse()
{
  my ($soapResponse) = (@_);
  if ( $soapResponse->fault )
  {
    print $soapResponse->faultcode, " ", $soapResponse->faultstring, "\n";
    exit();
  }
}
----------------------------------------------------------------------------
 findNodeInPool
----------------------------------------------------------------------------
sub findNodeInPool()
{
  my ($node_addr) = (@_);
   Get the list of pools
  $soapResponse = $Pool->get_list();
  &checkResponse($soapResponse);
  my @pool_list = @{$soapResponse->result};
   Get the list of pool members for all the pools
  $soapResponse = $Pool->get_member
  (
    SOAP::Data->name(pool_names => [@pool_list])
  );
  &checkResponse($soapResponse);
  @member_lists = @{$soapResponse->result};
   Loop over pools
  for $i (0 .. $pool_list)
  {
    $bFound = 0;
    $pool = @pool_list[$i];
    if ( "" == $node_addr )
    {
       if no node given, print out full list
      print "Pool $pool : ";
      foreach $member ($member_lists[$i][$j])
      {
        $addr = $member->{"address"};
        $port = $member->{"port"};
        
        print "$addr, ";
      }
      print "\n";
    }
    else
    {
       else, only print out where matches are found.
      foreach $member ($member_lists[$i][$j])
      {
        $addr = $member->{"address"};
        $port = $member->{"port"};
        if ( $node_addr eq $addr )
        {
          $bFound = 1;
        }
      }
      if ( $bFound )
      {
        print "Pool $pool : $node_addr\n";
      }
    }
  }
}

 

 

-Joe

Hi Joe,

 

 

This only seems to work if the node is the first member of the pool.

 

 

Is there are way to change it to look at all members in a pool?