ZenPacks.baileytj.BIND9

ZenPack to monitor a BIND9 daemon

Requirements

• PythonCollector ZenPack
• ZenPackLib

zProperties

• zBIND9IgnoreViews
  • Regex of BIND views to ignore
  • Default: _bind
• zBIND9RNDCBinaryPath - required when using cmd datasource
  • Path to the 'rndc' executable
  • Default: /usr/sbin/rndc
• zBIND9RNDCExecPrefix
  • Command to run prior to 'rndc'
  • Default: /usr/bin/sudo
• zBIND9RNDCStatsPath - required when using cmd datasource
  • Path to the stats file produced by 'rndc stats'
  • Default: /var/cache/bind/named.stats
• zBIND9URLHostname
  • Override the device id for accessing the BIND stats URL
  • Default:
• zBIND9URLPath
  • Path to use to access the BIND stats URL
  • Default: /xml/v3/server
• zBIND9URLPort
  • Port to use to access the BIND stats URL
  • Default: 80
• zBIND9URLUseSSL
  • Use https if True, http otherwise.
  • Default: False

Processes

Organizer

• DNS

Class

• bind
  • Matches processes for named

Usage

This ZenPack comes with two different ways to monitor BIND9. The first is by using rndc via zencommand. The second is by using BIND's statistics-channel via pythoncollector.

RNDC

To monitor BIND9 using rndc the SSH user specified in zCommandUsername is required to have permissions to execute the rndc executable and read the statistics file that is written by the rndc stats command. There are two ways to grant the required permissions.

The preferred way to grant the Zenoss SSH user the required permissions is to add an entry in /etc/sudoers to allow the user to execute the required commands via sudo.

Example /etc/sudoers addition:

Cmnd_Alias STATS = /usr/sbin/rndc stats
Cmnd_Alias STATUS = /usr/sbin/rndc status
zenoss  ALL=(ALL) NOPASSWD: STATS, STATUS

The second way to grant the Zenoss SSH user the required permissions is to add the user to the BIND9 user group. Depending on the flavor of OS the BIND9 user group will vary. Use this method with caution as the Zenoss SSH user will have administrative priveleges over the BIND9 configuration.

To monitor BIND9 via the rndc command, bind the baileytj.cmd.BIND9 modeler to the device or device class.

Statistics Channel

BIND9 also supports XML monitoring via statistics-channels. Zenoss only needs to be able to query the URL for BIND9 once the statistics-channel is configured.

To monitor BIND9 via the statistics-channel, bind the baileytj.python.BIND9 modeler to the device or device class.

Special Thanks

• JRansomed - ZenPack tester
• daviswr - ZenPack tester