PRTG EXE/XML Sensor for monitoring BIND nameserver statistics

BIND_statistics.ps1

 [cmdletbinding()]
Param(
  [ValidateNotNull()] [string]$NameServer
)

$curStats = New-Object System.Xml.XmlDocument
$curStats.Load( $("http://"+$NameServer+"/xml/v3/server") ) 
 
$output = "<prtg>`n"

$output += "`t<text>Config reloaded at " + $curStats.SelectSingleNode("/statistics/server/config-time").'#text' + "</text>`n"
 
# Incoming Requests by OpCode
$nodes = $curStats.SelectNodes("/statistics/server/counters[@type='opcode']/counter") | Where-Object {$_.name -notlike 'RESERVED*'}
foreach ($node in $nodes) {
    $output += "`t<result>`n"
    $output += "`t`t<channel>OpCode_$($node.name)</channel>`n"
    $output += "`t`t<value>$($node.'#text')</value>`n"
    $output += "`t`t<mode>difference</mode>`n"
    $output += "`t</result>`n"
}

# Incoming Queries by Query Type
$nodes = $curStats.SelectNodes("/statistics/server/counters[@type='qtype']/counter")
foreach ($node in $nodes) {
    $output += "`t<result>`n"
    $output += "`t`t<channel>QType_$($node.name)</channel>`n"
    $output += "`t`t<value>$($node.'#text')</value>`n"
    $output += "`t`t<mode>difference</mode>`n"
    $output += "`t</result>`n"
}
 
# Internal View Statistics
$nodes = $curStats.SelectNodes("/statistics/views/view[@name='internal']/counters[@type='cachestats']/counter")
foreach ($node in $nodes) {
    $output += "`t<result>`n"
    $output += "`t`t<channel>Cache_$($node.name)</channel>`n"
    $output += "`t`t<value>$($node.'#text')</value>`n"
    if ($node.name -like "*Hits" -or $node.name -like "*Misses") {
        $output += "`t`t<mode>difference</mode>`n"
    }
    if ($node.name -like "*Mem*") {
        $output += "`t`t<customunit>Bytes</customunit>`n"
    }
    $output += "`t</result>`n"
}

$output += '</prtg>'

# Output XML
$output