util to help switchport configuration in a vmware environment

list-esx-nets.rb

#!/usr/bin/env jruby

require 'java'
require 'dom4j-1.6.1.jar'
require 'vijava51b20120923.jar'


(server, username, password, clustername) = ARGV
url = "https://#{server}/sdk"

import java.net.URL
# Creating ViJava Module so I don't have to import each com.vmware.vim25.mo class individually.
module VIJava
  include_package "com.vmware.vim25.mo"
end

si = VIJava::ServiceInstance.new(URL.new(url), username, password, true)
rootFolder = si.getRootFolder()

clusters = VIJava::InventoryNavigator.new(rootFolder).searchManagedEntities("ClusterComputeResource")

clusters = clusters.find_all {|cluster| cluster.name.match clustername} if clustername


puts "!!" * 40 
puts "!! VM count per VPG in each cluster:"
puts "!!" * 40 

clusters.sort{|a,b| a.name <=> b.name }.each do |cluster|
  puts "#{cluster.name}:"
  cluster.networks.sort{|a,b| 
    a.name <=> b.name}.each{|net|
      printf("\t%20s: %10d VMs\n",net.name, net.vms.count) }
end 

puts
puts "!!" * 40 
puts "!! Unique VLAN ids of all PGs on hosts in each cluster:"
puts "!!" * 40 

clusters.sort{|a,b| a.name <=> b.name }.each do |cluster|
  puts "#{cluster.name}:"

  # native vlans
  vlans_on_hosts = cluster.hosts.collect do |host|
    pnics = host.host_network_system.network_config.pnic.collect {|pnic| pnic.device}
    host.host_network_system.query_network_hint(pnics).collect do |network_hint|
      if network_hint.connected_switch_port.nil?
        puts "\t Warning: no connnected switch info on #{host.name}, #{network_hint.device}"
        0
      else
        network_hint.connected_switch_port.vlan
      end
    end
  end
  
  vlans_on_hosts << cluster.hosts.collect do |host|
    host.host_network_system.network_info.portgroup.collect{|pg| pg.spec.vlanId}
  end
  vlans_on_hosts.flatten!.sort!.uniq!
  
  printf "\t%s\n\n", vlans_on_hosts.find_all{|vlan| vlan > 0}.join(",")
end 

puts
puts "!!" * 40 
puts "!! Cluster: switchport connections"
puts "!!" * 40 

clusters.sort{|a,b| a.name <=> b.name }.each do |cluster|
  puts "#{cluster.name}:"
  switchmap = {}
  cluster.hosts.each do |host|
    pnics = host.host_network_system.network_config.pnic.collect {|pnic| pnic.device}
    host.host_network_system.query_network_hint(pnics).each do |network_hint|
      if network_hint.connected_switch_port.nil?
        puts "\tWarning: no connnected switch info on #{host.name}, #{network_hint.device}"
      else
        dev_id = network_hint.connected_switch_port.dev_id
        port_id = network_hint.connected_switch_port.port_id
        vlan_id = network_hint.connected_switch_port.vlan

        switchmap[dev_id] = [] unless switchmap.include? dev_id
        switchmap[dev_id] << port_id
      end
    end
  end
  switchmap.each do |dev_id,ports|
    printf "\t%s\n", dev_id
    ports.sort{|x,y| x.gsub(/[a-zA-Z]/, '').split("/").collect{|x| x.to_i} <=> y.gsub(/[a-zA-Z]/, '').split("/").collect{|x| x.to_i}}.each do |port_id|
      printf "\t\t%s\n", port_id
    end
  end
end