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nrpe cookbook

Chef cookbook to install Nagios NRPE client (was previously part of the Nagios cookbook)

Maintainers

This cookbook is maintained by the Sous Chefs. The Sous Chefs are a community of Chef cookbook maintainers working together to maintain important cookbooks. If you’d like to know more please visit sous-chefs.org or come chat with us on the Chef Community Slack in #sous-chefs.

Requirements

Chef

Chef 15.3+

Platform

Debian
FreeBSD
Ubuntu
RHEL including CentOS and Oracle Linux
Amazon Linux (2.x cannot be installed via package)
Fedora
SUSE / openSUSE

Notes: This cookbook has been tested on the listed platforms. It may work on other platforms with or without modification.

Cookbooks

yum-epel

Recipes

default

Installs the NRPE client via packages or source depending on platform and attributes set

configure

Configures the NRPE client. This will be called internally by the default recipe but can also be used to re-configure later on.

Attributes

platform specific attributes (auto set based on platform)

node['nrpe']['install_method'] - whether to install from package or source. Default chosen by platform based on known packages available for NRPE: debian/ubuntu 'package', Redhat/CentOS/Fedora/Scientific: source
node['nrpe']['home'] - home directory of NRPE
node['nrpe']['ssl_lib_dir'] - ssl directory used by NRPE
node['nrpe']['pid_file'] - location to store the NRPE pid file
node['nrpe']['conf_dir'] - location of the nrpe configuration, default /etc/nagios
node['nrpe']['bin_dir'] - location of the nrpe binary, default /usr/sbin
node['nrpe']['packages'] - nrpe / plugin packages to install. The default attribute for RHEL/Fedora platforms contains a bare minimum set of packages. The full list of available packages is available at: http://dl.fedoraproject.org/pub/epel/6/x86_64/repoview/letter_n.group.html
node['nrpe']['log_facility'] - log facility for nrpe configuration, default nil (not set)
node['nrpe']['plugin_dir'] - location where Monitoring plugins (aka Nagios plugins) go, default '/usr/lib/nagios/plugins'.

options for package install

Package manager node['nrpe']['package']['options'] - options when installing nrpe via package manager. The default value for this attribute is nil.`
EPEL repo node['nrpe']['install_yum-epel'] - whether to install the EPEL repo or not. The default value is true. Set this to false if you do not wish to install the EPEL RPM; in this scenario you will need to make the relevant NRPE packages available via another method e.g. local repo.

nrpe.conf attributes

Server port: node['nrpe']['server_port'] - the port nrpe will listen on, default 5666
Address: node['nrpe']['server_address'] - the IP the nrpe server will listen on. This allows you to bind to particular IPs in situations where the system has more than one IP. This is particularly handy in determining if nrpe should bind to the internal or public IP in a cloud environment. Set the attribute to the node attribute for the cloud interface you wish to use. Defaults to nil (not enabled)
node['nrpe']['log_facility'] - syslog facility to log to, default nil (not set)
node['nrpe']['command_prefix'] - command to prefix to every nrpe command (like perhaps sudo), default nil (not set)
node['nrpe']['debug'] - debug level nrpe configuration, default 0
node['nrpe']['connection_timeout'] - connection timeout for nrpe configuration, default nil (not set)
node['nrpe']['dont_blame_nrpe'] - allows the server to send additional values to NRPE via arguments. this needs to be enabled for most checks to function
node['nrpe']['command_timeout'] - the amount of time NRPE will wait for a command to execute before timing out
node['nrpe']['allow_bash_command_substitution'] - allows bash command substitution in your nrpe commands - defaults to nil

urls for source installations

node['nrpe']['url'] - url to retrieve NRPE source
node['nrpe']['version'] - version of NRPE source to download
node['nrpe']['checksum'] - checksum of the NRPE source tarball
node['nrpe']['plugins']['url'] - url to retrieve the plugins source from
node['nrpe']['plugins']['version'] - version of the plugins source to download
node['nrpe']['plugins']['checksum'] - checksum of the plugins source tarball

authorization and server discovery

node['nrpe']['server_role'] - the role that the Nagios server will have in its run list that the clients can search for.
node['nrpe']['allowed_hosts'] - additional hosts that are allowed to connect to this client. Must be an array of strings (i.e. %w(test.host other.host)). These hosts are added in addition to 127.0.0.1, ::1, and IPs that are found via search.
node['nrpe']['using_solo_search'] - discover server information in node data_bags even with chef solo through the use of solo-search (https://github.com/edelight/chef-solo-search)
node['nrpe']['multi_environment_monitoring'] - search for nagios servers in all environments not just that of the node when building the array of allowed hosts, default 'false'

user and group attributes

node['nrpe']['user'] - NRPE user, default 'nagios'.
node['nrpe']['group'] - NRPE group, default 'nagios'.

Resources/Providers

check

The check resource provides an easy way to add and remove NRPE checks from within cookbooks.

Actions

:add creates a NRPE configuration file and reloads the NRPE process. Default action.
:remove removes the configuration file and reloads the NRPE process

Attribute Parameters

command_name The name of the check. This is the command that you will call from your nagios_service data bag check
warning_condition String that you will pass to the command with the -w flag
critical_condition String that you will pass to the command with the -c flag
command The actual command to execute (including the path). If this is not specified, this will use #{node['nrpe' ['plugin_dir']}/command_name as the path to the command.
parameters Any additional parameters you wish to pass to the plugin.
template Use the specific erb template to render NRPE config command.

Examples

# Use resource to define check_load
nrpe_check "check_load" do
  command "#{node['nrpe']['plugin_dir']}/check_load"
  warning_condition '10'
  critical_condition '15'
  action :add
end

# Remove the check_load definition
nrpe_check "check_load" do
  action :remove
end

Using template:

nrpe_check "check_load" do
  template "check_load.cfg.erb"
  action :add
end

Contributors

This project exists thanks to all the people who contribute.

Backers

Thank you to all our backers!