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# Find all of the VMs that have experienced ballooning in the last day
function ballooned? ($vm) {
  $d = Get-Stat -memory -entity $vm -start (Get-Date).AddDays(-1) |
    ?{ $_.MetricId -eq 'mem.vmmemctl.average' } |
    ?{ $_.value -ne 0 }
  return $d.count -ne 0
}

connect-viserver -server virtualcenter -credential (Get-Credential (Get-Item env:username).value)
$vms = get-view -viewtype virtualmachine

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# Create /etc/hosts style output of IPs - VM names
get-view -viewtype virtualmachine | ?{ $_.guest.ipaddress } | format-table -hideTableHeaders {$_.guest.ipaddress},name

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# VMware: set the advanced configuration option sched.mem.maxmemctl to zero to prevent ballooning
function deballoon ($vmname) {
  # Set "sched.mem.maxmemctl" to 0
  $opt = new-object Vmware.Vim.OptionValue -Property @{ Key = "sched.mem.maxmemctl"; Value = 0 }
  $vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec
  $vmConfigSpec.extraconfig += $opt

  # Use a filter to find a particular VM
  $vm = get-view -viewtype "VirtualMachine" -filter @{ "Name" = $vmname }

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# Find all VMs without the tools at the latest version/enabled
connect-viserver -server virtualcenter

get-view -viewtype "VirtualMachine" `
  | ?{ $_.runtime.powerstate -like 'poweredOn' } `
  | ?{ $_.guest.toolsstatus -notlike 'toolsok' } `
  | Sort-Object {$_.guest.toolsstatus} `
  | format-table name, {$_.guest.toolsstatus}

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get-view -viewtype virtualmachine | %{
  $vm = $_.name
  $vm.mac = @()
  $_.Config.Hardware.Device | ?{ $_.MacAddress } | %{ $vm.mac += $_.MacAddress };
  $vm 
} | format-table -wrap

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get-view -viewtype HostSystem | %{
  $_ | select-object @{ Name = "IP"; Expression = { $_.config.network.consolevnic | %{ $_.spec.ip.ipaddress } } },name
} | format-table -hidetableheaders

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$vsphere = "my-vc"
$new_user = "newbie"
$new_user_passwd = "new_sekret"
$new_user_grp = "root"

$root_user = "root"
$root_passwd = "really_sekret"

# Get all of the ESX servers (connect using Windows credentials)
connect-viserver -server $vsphere

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; Clojure example for updating a DNS zone using dnsjava 2.1.1: 
; http://www.xbill.org/dnsjava/
; Tested against named 9.3.6 from Red Hat on RHEL5.4
; Run using: java -cp clojure.jar:dnsjava-2.1.1.jar clojure.main dns-update.clj
(import '(org.xbill.DNS Update Name Type TSIG SimpleResolver))

(defn replaceArec [resolver zone host ip ttl]
  (let [update (Update. zone)]
    (do
      (. update replace

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; Return a list of vectors of hostname/ip address for VMware virtual machines from vCenter
; Export the environment variables:
; VI_USERNAME - your vCenter username
; VI_PASSWORD - your vCenter password
; VI_SERVER   - the vCenter hostname/IP
; Invoke with the command line:
; java -cp clojure-1.2.0/clojure.jar:vijava2120100715.jar:dom4j-1.6.1.jar clojure.main hosts.clj
(import '(com.vmware.vim25.mo ServiceInstance InventoryNavigator))

(def si (ServiceInstance.

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#!/usr/bin/perl

# Script to retrieve a list from sharepoint, which contains
# /etc/hosts type information and dump it in hosts format
#
# It's recomended to enter the username on the command line and let it prompt
# for the password
#
# The column names for the list items are hard coded.
#